CN113006717A - Marine underwater coiled tubing device and method - Google Patents
Marine underwater coiled tubing device and method Download PDFInfo
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- CN113006717A CN113006717A CN202110253054.9A CN202110253054A CN113006717A CN 113006717 A CN113006717 A CN 113006717A CN 202110253054 A CN202110253054 A CN 202110253054A CN 113006717 A CN113006717 A CN 113006717A
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- 238000000034 method Methods 0.000 title claims description 10
- 238000002347 injection Methods 0.000 claims abstract description 48
- 239000007924 injection Substances 0.000 claims abstract description 48
- 239000002131 composite material Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000002265 prevention Effects 0.000 claims description 31
- 238000010008 shearing Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 29
- 230000002457 bidirectional effect Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 229910001339 C alloy Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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- 230000010355 oscillation Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
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Abstract
本发明公开一种海洋水下连续油管设备，包括油管注入头和井口连接头，油管注入头的下端连接井口连接头的上端，油管注入头上端具有能承受海洋水下连续油管设备重量的顶部支架，顶部支架连接用于控制海洋水下连续油管设备工作和信号传输的复合钢芯电缆，井口连接头的下端固定设置有用于和水下井口头连接的液压连接器，连续油管从油管注入头的顶部支架进入到油管注入头中，穿过油管注入头和井口连接头内部后再从井口连接头穿出进入水下井口，油管注入头内固定有用于夹持和起下连续油管的连续油管夹持起下结构。本发明将主要用于起下连续油管设备设置在本发明的内部，脱离深水平台的高昂费用和避免起下连续油管的不稳定性，且提高在不同工程船的适配性。
The invention discloses a marine underwater coiled tubing equipment, comprising a tubing injection head and a wellhead connector, the lower end of the tubing injection head is connected to the upper end of the wellhead connector, and the upper end of the tubing injection head is provided with a top bracket capable of bearing the weight of the marine underwater coiled tubing equipment , the top bracket is connected to the composite steel core cable used to control the operation and signal transmission of the marine underwater coiled tubing equipment, the lower end of the wellhead connector is fixed with a hydraulic connector for connecting with the subsea wellhead, and the coiled tubing is injected from the top of the tubing injection head. The bracket enters the tubing injection head, passes through the tubing injection head and the wellhead connector, and then passes through the wellhead connector and enters the subsea wellhead. The tubing injection head is fixed with a coiled tubing clamp for clamping and tripping the coiled tubing. Get off the structure. In the present invention, the coiled tubing equipment mainly used for tripping and tripping is arranged in the interior of the present invention, so as to avoid the high cost of detaching from the deep water platform and avoid the instability of the coiled tubing during tripping and tripping, and improve the adaptability in different engineering ships.
Description
Technical Field
The invention relates to the field of marine underwater coiled tubing conveying, in particular to marine underwater coiled tubing equipment and a marine underwater coiled tubing method.
Background
The coiled tubing is also called coiled tubing, is a tubing which is made of low-carbon alloy and has good bending deformation capability, the length of one coil of coiled tubing can reach several kilometers, coiled tubing equipment has the advantages of operation under pressure and high pulling speed, is widely applied to the operation fields of oil-gas well drilling, well completion, well workover, test oil trial production, well logging and the like, runs through the whole process of oil-gas exploitation, and plays an important role in the exploration and development of oil and natural gas.
At present, a coiled tubing used in deep sea must be supported by a deep level platform, but the deep level platform can cause a plurality of problems: firstly, the construction difficulty of building a deep level platform on the sea is high; secondly, a heave compensation system is arranged on the deep level platform when the coiled tubing is lifted and lowered to a preset underwater wellhead, and the heave compensation system is used for offsetting the influence of wave fluctuation on the deep level platform, so that the precision of lifting and lowering the coiled tubing is controlled conveniently to achieve the purpose that the coiled tubing accurately reaches the underwater wellhead; and thirdly, the coiled tubing is pulled down from the deep level platform, and the coiled tubing is guided and protected to reach a preset underwater wellhead by a marine riser or a drill rod. Due to the reasons, the coiled tubing used in deep sea generates high cost and reduces the operation efficiency, and further popularization and application of the coiled tubing and marine oil and gas exploration and development are restricted.
In addition, in the prior art, coiled tubing equipment which does not need a deep level platform is also available, such as the application with the publication number CN 111448362 a, but the coiled tubing equipment inevitably needs to be provided with a driving unit (HCI) on the ship in advance for compensating the oscillating motion of the ship and taking off and putting down the coiled tubing, which is not favorable for the adaptability of the coiled tubing equipment on different ships.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides marine underwater coiled tubing equipment, which can solve the problem that a deep level platform is not supported and a main device is placed in the marine underwater coiled tubing equipment to realize the lifting of a coiled tubing;
the invention also provides a using method based on the marine underwater coiled tubing equipment, which can solve the problem that the coiled tubing is taken off and down by means of a deep-level platform and the main equipment placed in the marine underwater coiled tubing equipment.
The technical scheme for realizing one purpose of the invention is as follows: the marine underwater coiled tubing device comprises a tubing injection head and a wellhead connector, wherein the lower end of the tubing injection head is connected with the upper end of the wellhead connector;
the wellhead connector comprises a hydraulic connector which is fixedly arranged at the lower end of the wellhead connector and is fixedly connected with an underwater wellhead head positioned in the operation area, so that the marine underwater coiled tubing equipment is fixedly seated on the underwater wellhead head;
the coiled tubing injection head comprises a coiled tubing clamping and setting structure, the coiled tubing clamping and setting structure is fixedly arranged in the coiled tubing injection head, and the coiled tubing clamping and setting structure is used for clamping and setting the coiled tubing entering from the coiled tubing injection head and penetrating through the wellhead connector, so that the coiled tubing enters the underwater wellhead under the clamping and setting effect of the coiled tubing clamping and setting structure.
Further coiled tubing centre gripping structure down includes main drive wheel, auxiliary tension wheel, annular chain, and each main drive wheel is installed at coiled tubing's side, and each main drive wheel below position corresponds auxiliary tension wheel, and main drive wheel and auxiliary tension wheel pass through annular chain transmission and connect, are provided with a plurality of grip block on the annular chain, and the grip block is used for the centre gripping to go up down coiled tubing.
Furthermore, the coiled tubing gripping structure of having got off still is provided with two-way holder, and two-way holder is fixed to be set up between the annular chain of coiled tubing both sides, and the left end of two-way holder is connected the annular chain part that the left side annular chain is close to coiled tubing, and the right side of two-way holder is connected the annular chain part that the right side annular chain is close to coiled tubing for grip blocks on the annular chain of coiled tubing both sides are close to each other in order to press from both sides tight coiled tubing.
Furthermore, the coiled tubing gripping structure of having descended still includes clamping device, and the annular chain part that coiled tubing left side annular chain is close to coiled tubing is connected to clamping device left end, and the right-hand member of clamping device connects the part that right side annular chain is far away from coiled tubing, and clamping device is used for providing horizontal clamping-force and prevents to break away from the main drive wheel when annular chain rotates.
Furthermore, a hydraulic blowout prevention box is fixedly arranged at the upper end of the wellhead connector, the lower end of the oil pipe injection head is connected with the upper end of the wellhead connector through the hydraulic blowout prevention box, the continuous oil pipe sequentially penetrates through the oil pipe injection head, the hydraulic blowout prevention box and the wellhead connector, a rubber core is arranged in the hydraulic blowout prevention box, and the rubber core released from the hydraulic blowout prevention box is used for filling and sealing an annular space between the continuous oil pipe and the hydraulic blowout prevention box.
Furthermore, the lower end of the hydraulic blowout prevention box is fixedly connected with a blowout prevention pipe used for containing a coiled tubing, the bottom of the blowout prevention pipe is fixedly connected with a hydraulic connector, the blowout prevention pipe is vertically arranged in the wellhead connector, the coiled tubing penetrating out of the wellhead connector penetrates through the blowout prevention pipe, and the blowout prevention pipe bears external high pressure to protect the coiled tubing contained in the blowout prevention pipe.
Further, the wellhead connector further comprises a shear ram blowout preventer fixedly connected to the lower end of the lubricator and the upper end of the hydraulic connector, the shear ram blowout preventer being for shearing coiled tubing passing through the shear ram blowout preventer and for closing the lower end of the lubricator.
Furthermore, a plurality of primary energy accumulators are fixedly arranged inside the wellhead connector and connected with the shearing ram blowout preventer, high-pressure gas is stored inside the primary energy accumulators and used for providing additional auxiliary power for the shearing ram blowout preventer.
Furthermore, a top support is installed at the upper end of the oil pipe injection head, the top support is used for fixedly connecting the composite steel core cable and bearing the weight of the whole underwater coiled tubing device, the lower end of the top support is connected with an outer frame of the oil pipe injection head, a coiled tubing clamping and pulling-down structure is fixedly connected in the outer frame, the outer frame is used for protecting the coiled tubing clamping and pulling-down structure from being impacted, and the lower end of the outer frame is connected with the upper end of a wellhead connector.
The second technical scheme for realizing the aim of the invention is as follows: a method of using marine subsea coiled tubing equipment, comprising the steps of:
the method comprises the following steps: before launching, the coiled tubing extends out of a coiled tubing roller of an engineering ship and is inserted into a tubing injection head; the composite steel core cable on the engineering ship is connected with the marine underwater coiled tubing equipment;
step two: starting a coiled tubing clamping and tripping structure in the tubing injection head, and conveying the coiled tubing inserted into the tubing injection head in the step one to the inside of a wellhead connector by the coiled tubing clamping and tripping structure so that the coiled tubing is clamped in the marine underwater coiled tubing equipment and is tripped into water along with the marine underwater coiled tubing equipment;
step three: lifting the marine underwater coiled tubing equipment to be put into water by a crane on an engineering ship;
step four: the marine underwater coiled tubing equipment simultaneously carries the composite steel core cable and the coiled tubing to be put into water;
step five: an underwater robot matched with an engineering ship assists the marine underwater coiled tubing equipment to approach an underwater wellhead and finally sit on the underwater wellhead, and a hydraulic connector at the lower end of a wellhead connector fixedly sits on the wellhead;
step six: starting the coiled tubing clamping and tripping structure, conveying the coiled tubing by the coiled tubing clamping and tripping structure, and clamping and tripping the coiled tubing inside the wellhead connector by the coiled tubing in the second step and conveying the coiled tubing to the bottom of the well;
step seven: and the coiled tubing downhole tool assembly at the lowest end of the coiled tubing is matched to execute the operation contents of drilling, well repairing, testing and the like.
The invention has the beneficial effects that: the invention can use a common engineering ship as a carrier, does not need to establish a deep level platform on the sea in advance, does not need to place a main device for a marine oscillation compensation system on the engineering ship in advance, and can lift the coiled tubing to enter and exit the underwater wellhead after the underwater coiled tubing device is put into a preset underwater wellhead head so as to meet the operation requirements of drilling, repairing and testing the marine oil-gas well. The invention can break away from the high cost of a deep level platform, avoid the instability of pulling and pulling the coiled tubing and improve the adaptability of different engineering ships.
Drawings
FIG. 1 is a schematic view of a working structure of a marine coiled tubing installation in conjunction with a conventional engineering vessel;
FIG. 2 is a schematic view of the overall structure of a marine subsea coiled tubing apparatus;
FIG. 3 is a schematic structural view of a tubing connector of a marine subsea coiled tubing installation;
FIG. 4 is a schematic structural view of a wellhead connection head of a marine subsea coiled tubing apparatus;
in the figure, 1-composite steel core cable, 2-coiled tubing, 3-top bracket, 4-outer frame, 5-multi-channel hydraulic distributor, 6-pressure indicator, 7-main driving wheel, 8-annular chain, 9-clamping device, 10-bidirectional gripper, 11-clamping block, 12-auxiliary tension wheel, 13-hanging weight sensor, 14-underwater camera, 15-hydraulic blowout preventer, 16-hydraulic station, 17-blowout preventer, 18-emergency hydraulic socket, 19-shearing flashboard blowout preventer, 20-primary energy accumulator, 21-hydraulic balancer, 22-hydraulic connector, 23-underwater wellhead, 24-coiled tubing downhole tool assembly, 25-composite cable winch, 26-coiled tubing equipment control center, 27-coiled tubing roller, 28-sea level, 29-engineering ship, 100-tubing injection head, 200-wellhead connector and 300-marine underwater coiled tubing equipment.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1-4, a marine coiled tubing installation 300 is shown in a schematic view of the working configuration of a conventional work vessel 29. An engineering ship 29 is arranged on the sea level 28 at the upper part of the drawing 1, the engineering ship 29 is a conventional engineering ship, other driving devices with a heave compensation system are not required to be arranged in advance, and the engineering ship 29 comprises a composite cable winch 25, a coiled tubing roller 27 and a coiled tubing equipment control center 26.
The composite cable winch 25 is used for accommodating and extending the composite steel core cable 1, the composite steel core cable 1 is a composite armored cable with a high-strength steel wire braided core and a plurality of cables and signal wires around the composite steel core cable, and the extended composite steel core cable 1 is connected with the upper end of the marine underwater coiled tubing equipment 300 and provides power and transmission signals for the marine underwater coiled tubing equipment 300; the coiled tubing drum 27 is used for accommodating and extending the coiled tubing 2, the coiled tubing 2 is generally made of low-carbon alloy and can be repeatedly bent, the length of a single coiled tubing 2 can reach several kilometers, and one end of the extended coiled tubing 2 is inserted into the underwater coiled tubing device 300; the device control center 26 transmits an electrical signal through the composite steel core cable 1 to control the marine coiled tubing device 300 to pull in and pull out the coiled tubing 2, and also receives an electrical signal from the marine coiled tubing device 300 to know the working state of the marine coiled tubing device 300.
The engineering ship 29 transports the marine coiled tubing device 300 to the position above the preset underwater wellhead section 23, and puts the marine coiled tubing device 300 into the sea, and the marine coiled tubing device 300 brings the coiled tubing 2 and the composite steel core cable 1 to approach the underwater wellhead section 23. Typically, the vessel 29 or deep-water platform will be equipped with a subsea robot (not shown) that can sit exactly on the subsea wellhead section 23 with the subsea coiled tubing rig 300, and the subsea coiled tubing rig 300 will pull the coiled tubing 2 down into the subsea wellhead section 23.
The lower end of the coiled tubing 2 is provided with a coiled tubing downhole tool assembly 24, and the coiled tubing downhole tool assembly 24 can be provided with a proper tool to complete the operation contents of downhole drilling, well repairing, testing and the like.
Referring to fig. 2, the marine coiled tubing installation 300 is shown in an overall schematic view, and the marine coiled tubing installation 300 includes a tubing injector head 100 and a wellhead connector 200. The uppermost end of the oil pipe injection head 100 is connected with the composite steel core cable 1, the lower end of the oil pipe injection head 100 is connected with the upper end of the wellhead connector 200, and the continuous oil pipe 2 enters from the uppermost end of the oil pipe injection head 100, passes through the oil pipe injection head 100 and the wellhead connector 200 and then enters the underwater wellhead head 23.
Fig. 3 shows a schematic diagram of the configuration of the tubing injector head 100 of the marine coiled tubing installation 300. The oil pipe injection head 100 comprises a top bracket 3, an outer frame 4, a hydraulic distributor 5, a pressure indicator 6, a main driving wheel 7, an annular chain 8, a clamping device 9, a bidirectional clamp 10, a clamping block 11, an auxiliary tension wheel 12 and a suspended weight sensor 13. The uppermost end of the tubing injector head 100 is a top bracket 3, and the top bracket 3 is used for fixedly connecting the composite steel core cable 1 and bearing the weight of the entire marine subsea coiled tubing device 300. The lower end of the top bracket 3 is connected with an outer frame 4, the outer frame 4 is a frame of the oil pipe injection head 100, all components in the oil pipe injection head 100 are fixedly arranged inside the outer frame 4, and the outer frame 4 is used for protecting all components in the outer frame 4 from being impacted. At least two main driving wheels 7 are fixedly arranged in the outer frame 4, the two main driving wheels 7 are positioned at two sides of the continuous oil pipe 2 entering the oil pipe injection head 100, an auxiliary tension wheel 12 is fixed at the lower position of each main driving wheel 7, the main driving wheels 7 and the auxiliary tension wheels 12 at the same side are connected through an annular chain 8, the annular chains 8 are chains which are connected end to form a ring and are sleeved outside the main driving wheels 7 and the auxiliary tension wheels 12, the main driving wheels 7 and the auxiliary tension wheels 12 at the same side rotate along with the rotation of the main driving wheels 7 and the auxiliary tension wheels 12 at the same side, a plurality of clamping blocks 11 are arranged on each annular chain 8, the clamping blocks 11 are uniformly distributed on the same annular chain 8, the clamping blocks 11 are used for clamping the continuous oil pipe 2 and preventing the continuous oil pipe 2 from slipping when the continuous oil pipe 2 is conveyed, the main driving wheels 7, the auxiliary tension wheels 12, the annular chains 8 and the clamping blocks, the coiled tubing gripping and setting structure is used for stably setting up and setting down the coiled tubing 2. The bidirectional gripper 10 is fixedly arranged between the annular chains 8 on two sides of the coiled tubing 2, the left end of the bidirectional gripper 10 is connected with the part, close to the coiled tubing 2, of the left annular chain 8, and the right side of the bidirectional gripper 10 is connected with the part, close to the coiled tubing 2, of the right annular chain 8, so that the gripping blocks 11 on the annular chains 8 on two sides of the coiled tubing 2 are close to each other to clamp the coiled tubing 2. The left end of the clamping device 9 is connected with the part, close to the coiled tubing 2, of the annular chain 8 on the left side of the coiled tubing 2, the part, far away from the coiled tubing 2, of the annular chain 8 on the right side is connected with the right end of the clamping device 9, and the clamping device 9 is used for providing transverse clamping force and preventing the annular chain 8 from being separated from the main driving wheel 7 when rotating. The specific operation of the structure is that: the rotation of the main driving wheel 7 and the auxiliary tensioning wheel 12 drives the annular chain 8 between the main driving wheel 7 and the auxiliary tensioning wheel 12 to rotate circularly between the main driving wheel 7 and the auxiliary tensioning wheel 12, the bidirectional clamp holder 10 and the clamping device 9 strengthen the clamping force of the clamping block 11 on the coiled tubing 2, and the coiled tubing 2 is lifted through the rotation of the annular chain 8.
A multi-channel hydraulic distributor 5 is further fixed in the outer frame 4 and used for managing hydraulic circulation channels and controlling actions of hydraulic parts in the marine underwater coiled tubing equipment 300, and the multi-channel hydraulic device 5 is used for driving the main driving wheel 8 and the auxiliary tension wheel 12 to rotate and clamp the coiled tubing 2 and adjusting clamping force of the clamping device 9 and the bidirectional clamp 10. The multi-way hydraulic distributor 5 consists of multi-way valves and pipelines. The multi-channel hydraulic distributor 5 is provided with a plurality of pressure indicating meters 6, the pressure indicating meters 6 are used for displaying hydraulic pressure values of hydraulic channels in a main driving wheel 8, an auxiliary tensioning wheel 12, a clamping device 9 and a bidirectional clamp holder 10 in the marine underwater coiled tubing equipment 300, and different pressure indicating meters 6 are hydraulic meters with different pressure levels.
The two sides of the lower end of the oil pipe injection head 100 are provided with the hanging weight sensors 13, the hanging weight sensors 13 are used for measuring load data of acting force generated by blocking the coiled tubing when the coiled tubing clamping and tripping structure is lifted out and tripped in by the coiled tubing 2, specifically, when the coiled tubing 2 is lifted out and tripped in, the acting force blocking the coiled tubing 2 can act on the coiled tubing clamping and tripping structure conveying the coiled tubing 2, the coiled tubing clamping and tripping structure in the fixed oil pipe injection head 100 can generate acting force on the whole oil pipe injection head 100, the two sides of the lower end of the oil pipe injection head 100 are provided with the load data generated by the acting force measured by the hanging weight sensors 13, and the load data are transmitted to the coiled tubing equipment control center 26 on the engineering ship 29 through the composite steel core cable 1 to correspond to conditions.
FIG. 4 shows a schematic of the configuration of wellhead connector 200 of marine subsea coiled tubing installation 300. The uppermost end of the wellhead connector 200 is provided with the hydraulic blowout prevention box 15, the hydraulic blowout prevention box 15 is connected with the lower end of the oil pipe injection head 100, the coiled tubing 2 which passes through the oil pipe injection head 100 enters the wellhead connector 200 from the hydraulic blowout prevention box 15, the hydraulic blowout prevention box 15 can extrude or release a rubber core, the rubber core is used for filling an annular space between the outside of the sealed coiled tubing 2 and the inside of the hydraulic blowout prevention box 15, and the position of the coiled tubing 2 in the wellhead connector 200 is protected and stabilized.
The lower end of the hydraulic blowout preventer box 15 is connected with a lubricator 17, the lubricator 17 is vertically arranged in the wellhead connector 200, the coiled tubing 2 passing through the hydraulic blowout preventer box 15 enters the lubricator 17, and the lubricator 17 is a tubular container for accommodating the coiled tubing 2 and can bear the high pressure of 100 psi.
The lower end of the blowout preventer 17 is connected with a shear ram blowout preventer 19, and the shear ram blowout preventer 19 is used for shearing the coiled tubing 2 in a short time and sealing a wellhead when blowout and the like occur, and can also seal the wellhead under the condition that no coiled tubing 2 exists.
The inside of well head connector 200 is fixed and is provided with a plurality of one-level energy storage ware 20, and one-level energy storage ware 20 is connected with shear ram preventer 19, and the inside high-pressure gas that has stored of one-level energy storage ware 20 can provide extra auxiliary power for shear ram preventer 19.
The lower end of the shear ram blowout preventer 19 is connected with a hydraulic connector 22, namely the lower end of a wellhead connector is fixedly provided with the hydraulic connector 22 for connecting the marine coiled tubing equipment 300 with the underwater wellhead head 23, the marine coiled tubing equipment 300 is fixed on the underwater wellhead head 23, and the coiled tubing 2 penetrates through the hydraulic connector 22 and then enters the underwater wellhead from the underwater wellhead head 23.
Still be provided with hydraulic pressure station 16 in the well head connector 200, hydraulic pressure station 16 includes parts such as closed hydraulic pump, driving motor, drive arrangement control system, and driving motor drives the operation of closed hydraulic pump, provides hydraulic drive power for hydraulic pressure station 16. The driving device control system adopts a load sensitive closed control loop, and automatically adjusts the hydraulic pressure of the hydraulic blowout preventer box 15, the shear ram blowout preventer 22, the emergency hydraulic socket 18 and the hydraulic connector 22 in work according to the actual load of the marine underwater coiled tubing equipment 300. The hydraulic station 16 can adopt an electro-hydraulic control mode, and can be connected with an external electric control system for control and can also realize high-precision control operation. The hydraulic stations 16 may also be provided in two, alternate configurations.
Well head connector 200 is provided with emergent hydraulic pressure socket 18, emergent hydraulic pressure socket 18 is used for appearing whole outage's the condition back at the ocean coiled tubing equipment 300 under water, under the unable normal use's of ground control system the condition, through transferring the supporting underwater robot of engineering ship 29, the last hydraulic pressure plug that has the emergent hydraulic pressure socket 18 adaptation with the well head device of underwater robot, hydraulic pressure plug realizes the ocean coiled tubing equipment 300 under water functions such as emergent release, emergency shutoff in inserting the emergent hydraulic pressure socket 18 of well head device.
The wellhead connector 200 is fixedly provided with a plurality of underwater cameras 14 outside for observing the external conditions of the marine underwater coiled tubing equipment 300.
The specific construction steps are described below with reference to fig. 1-4:
1. before launching, the coiled tubing 2 extends out of the coiled tubing drum 27 and is inserted into the tubing injector head 100; the composite steel core cable 1 is connected with the marine underwater coiled tubing equipment 300.
2. The main driving wheel 7 in the oil pipe injection head 100 is started to rotate, the main driving wheel 7 drives the auxiliary tension wheel 12 to rotate through the annular chain 8, the clamping device 9 and the bidirectional clamp holder 10 provide clamping force for the clamping blocks 11 on the annular chain 8, and the coiled tubing 2 is conveyed into the blowout preventer 17 in the wellhead connector 200 along with the rotation of the annular chain 8 and then stops conveying, so that the coiled tubing 2 can be clamped in the underwater coiled tubing equipment 300 and is put into water along with the underwater coiled tubing equipment 300.
3. The marine coiled tubing installation 300 is lifted up and lowered into the water by a crane on the engineering vessel 29.
4. The marine underwater coiled tubing device 300 simultaneously carries the composite steel core cable 1 and the coiled tubing 2 to be lowered into water.
5. The underwater robot matched with the engineering ship 29 assists the marine underwater coiled tubing equipment 300 to approach the underwater wellhead head 23 and finally sit on the underwater wellhead, a hydraulic system of the wellhead connector 200 is started, and the hydraulic connector 22 at the lower end of the wellhead connector 200 fixes the marine underwater coiled tubing equipment 300 on the wellhead.
6. The main driving wheel 7, the auxiliary tension wheel 12, the annular chain 8 and the clamping block 11 in the starting oil pipe injection head 100 form a coiled tubing clamping and pulling structure, and the coiled tubing clamping and pulling structure conveys the coiled tubing 2 to the bottom of the well.
7. And the coiled tubing downhole tool assembly 24 at the lowest end of the coiled tubing 2 is matched to execute the operation contents of drilling, well repairing, testing and the like.
The above-mentioned engineering ship 29 cooperates with the marine coiled tubing equipment 300 to set the main equipment for transporting coiled tubing 2 in the marine coiled tubing equipment 300, and then fixes the marine coiled tubing equipment 300 at the underwater wellhead instead of building a deep horizontal platform with expensive price and complex function on the sea surface. In addition, during the process that the coiled tubing 2 is lowered to be close to the underwater wellhead head 23, the deep water platform needs to rely on a heave compensation system for counteracting wave fluctuation to improve the precision that the coiled tubing 2 accurately reaches the underwater wellhead head 23, and in addition, a riser or a drill pipe is needed for guiding and protecting the coiled tubing 2 to reach the underwater wellhead head. However, in the application, the engineering ship 29 is matched with the underwater coiled tubing equipment 300, so that a heave compensation system, a riser and a drill rod are not needed, the underwater coiled tubing equipment 300 carried by the underwater robot is seated on the underwater wellhead head 23, the coiled tubing 2 is accurately lowered to the underwater wellhead head 23, the operation efficiency is improved, and the engineering cost is saved.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (10)
1. An ocean is coiled tubing equipment under water which characterized in that: the device comprises an oil pipe injection head and a wellhead connector, wherein the lower end of the oil pipe injection head is connected with the upper end of the wellhead connector;
the wellhead connector comprises a hydraulic connector which is fixedly arranged at the lower end of the wellhead connector and is fixedly connected with an underwater wellhead head positioned in the operation area, so that the marine underwater coiled tubing equipment is fixedly seated on the underwater wellhead head;
the coiled tubing injection head comprises a coiled tubing clamping and setting structure, the coiled tubing clamping and setting structure is fixedly arranged in the coiled tubing injection head, and the coiled tubing clamping and setting structure is used for clamping and setting the coiled tubing entering from the coiled tubing injection head and penetrating through the wellhead connector, so that the coiled tubing enters the underwater wellhead under the clamping and setting effect of the coiled tubing clamping and setting structure.
2. The marine subsea coiled tubing apparatus of claim 1, wherein: the coiled tubing holding and pulling structure comprises a main driving wheel, an auxiliary tensioning wheel and an annular chain, wherein each main driving wheel is arranged on the side edge of the coiled tubing, the position below each main driving wheel corresponds to the auxiliary tensioning wheel, the main driving wheel and the auxiliary tensioning wheel are in transmission connection through the annular chain, a plurality of holding blocks are arranged on the annular chain, and the holding blocks are used for holding and pulling the coiled tubing.
3. The marine subsea coiled tubing apparatus of claim 2, wherein: the coiled tubing gripping structure of having down still is provided with two-way holder, and two-way holder is fixed to be set up between the annular chain of coiled tubing both sides, and the left end of two-way holder is connected the annular chain part that the left side annular chain is close to coiled tubing, and the right side of two-way holder is connected the annular chain part that the right side annular chain is close to coiled tubing for grip block on the annular chain of coiled tubing both sides is close to each other in order to press from both sides tight coiled tubing.
4. Marine subsea coiled tubing arrangement according to claim 2 or 3, wherein: the coiled tubing gripping and pulling structure further comprises a clamping device, the left end of the clamping device is connected with the portion, close to the coiled tubing, of the annular chain on the left side of the coiled tubing, the right end of the clamping device is connected with the portion, far away from the coiled tubing, of the annular chain on the right side, and the clamping device is used for providing transverse clamping force and preventing the annular chain from being separated from the main driving wheel when rotating.
5. The marine subsea coiled tubing apparatus of claim 1, wherein: the upper end of the wellhead connecting head is fixedly provided with a hydraulic blowout prevention box, the lower end of the oil pipe injection head is connected with the upper end of the wellhead connecting head through the hydraulic blowout prevention box, the continuous oil pipe sequentially penetrates through the oil pipe injection head, the hydraulic blowout prevention box and the wellhead connecting head, a rubber core is arranged in the hydraulic blowout prevention box, and the rubber core released from the hydraulic blowout prevention box is used for filling and sealing an annular space between the continuous oil pipe and the hydraulic blowout prevention box.
6. The marine subsea coiled tubing apparatus of claim 5, wherein: the lower end of the hydraulic blowout prevention box is fixedly connected with a blowout prevention pipe used for containing a coiled tubing, the bottom of the blowout prevention pipe is fixedly connected with a hydraulic connector, the blowout prevention pipe is vertically arranged in a wellhead connector, the coiled tubing penetrating out of the wellhead connector penetrates through the blowout prevention pipe, and the blowout prevention pipe bears external high pressure to protect the coiled tubing contained in the blowout prevention pipe.
7. The marine subsea coiled tubing apparatus of claim 6, wherein: the wellhead connector further comprises a shear ram blowout preventer fixedly connected to the lower end of the lubricator and the upper end of the hydraulic connector, and the shear ram blowout preventer is used for shearing the coiled tubing passing through the shear ram blowout preventer and for closing the lower end of the lubricator.
8. The marine subsea coiled tubing apparatus of claim 7, wherein: a plurality of primary energy accumulators are fixedly arranged inside the wellhead connector and connected with the shearing ram blowout preventer, high-pressure gas is stored inside the primary energy accumulators and used for providing additional auxiliary power for the shearing ram blowout preventer.
9. The marine subsea coiled tubing apparatus of claim 1, wherein: the top support is installed to the upper end of oil pipe injection head, and the top support is used for the weight of the compound steel core cable of fixed connection and the whole ocean coiled tubing equipment under water, and the outer frame of oil pipe injection head is connected to the lower extreme of top support, and coiled tubing centre gripping is played down structure fixed connection and is in outer frame, and outer frame is used for protecting coiled tubing centre gripping and is played down the structure and avoid the striking, and the upper end of well head connector is connected to the lower extreme of outer frame.
10. The method of using the marine subsea coiled tubing apparatus of claim 1, having the steps of:
the method comprises the following steps: before launching, the coiled tubing extends out of a coiled tubing roller of an engineering ship and is inserted into a tubing injection head; the composite steel core cable on the engineering ship is connected with the marine underwater coiled tubing equipment;
step two: starting a coiled tubing clamping and tripping structure in the tubing injection head, and conveying the coiled tubing inserted into the tubing injection head in the step one to the inside of a wellhead connector by the coiled tubing clamping and tripping structure so that the coiled tubing is clamped in the marine underwater coiled tubing equipment and is tripped into water along with the marine underwater coiled tubing equipment;
step three: lifting the marine underwater coiled tubing equipment to be put into water by a crane on an engineering ship;
step four: the marine underwater coiled tubing equipment simultaneously carries the composite steel core cable and the coiled tubing to be put into water;
step five: an underwater robot matched with an engineering ship assists the marine underwater coiled tubing equipment to approach an underwater wellhead and finally sit on the underwater wellhead, and a hydraulic connector at the lower end of a wellhead connector fixedly sits on the wellhead;
step six: starting the coiled tubing clamping and tripping structure, conveying the coiled tubing by the coiled tubing clamping and tripping structure, and clamping and tripping the coiled tubing inside the wellhead connector by the coiled tubing in the second step and conveying the coiled tubing to the bottom of the well;
step seven: and the coiled tubing downhole tool assembly at the lowest end of the coiled tubing is matched to execute the operation contents of drilling, well repairing, testing and the like.
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| CN202110253054.9A CN113006717B (en) | 2021-03-02 | 2021-03-02 | Marine underwater coiled tubing equipment and method |
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| CN202110253054.9A CN113006717B (en) | 2021-03-02 | 2021-03-02 | Marine underwater coiled tubing equipment and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530517A (en) * | 2021-09-17 | 2021-10-22 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
| CN114704216A (en) * | 2022-06-06 | 2022-07-05 | 山东威盟石油机械有限公司 | Coiled tubing operating system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080230228A1 (en) * | 2005-02-15 | 2008-09-25 | Tom Kjetil Askeland | System and Method For Well Intervention |
| US20090250205A1 (en) * | 2005-03-30 | 2009-10-08 | Sietse Jelle Koopmans | Coiled Tubing Injector Head |
| CN102852485A (en) * | 2011-07-28 | 2013-01-02 | 南通天华和睿科技创业有限公司 | Continuous oil-pumping pipe device |
| CN105064934A (en) * | 2015-08-26 | 2015-11-18 | 东营天华石油技术开发有限公司 | Coiled tubing device and operation method capable of remote control lifting and lowering |
| CN105275417A (en) * | 2015-05-19 | 2016-01-27 | 中石化重庆涪陵页岩气勘探开发有限公司 | Method for running in and out coiled tubing production string |
| CN205100911U (en) * | 2015-08-10 | 2016-03-23 | 山东科瑞机械制造有限公司 | Coiled tubing's first device of injection |
| CN107503706A (en) * | 2017-10-12 | 2017-12-22 | 中国海洋石油总公司 | A kind of underwater well workover assembly |
| CN208364075U (en) * | 2018-07-06 | 2019-01-11 | 张兴荣 | Intelligent digitalized coiled tubing injection head |
| CN111448362A (en) * | 2017-12-19 | 2020-07-24 | 韦尔泰克有限公司 | Offshore Coiled Tubing System |
| CN111561299A (en) * | 2020-05-26 | 2020-08-21 | 中海石油(中国)有限公司 | Liquid drainage and gas production operation system and operation method suitable for engineering ship |
-
2021
- 2021-03-02 CN CN202110253054.9A patent/CN113006717B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080230228A1 (en) * | 2005-02-15 | 2008-09-25 | Tom Kjetil Askeland | System and Method For Well Intervention |
| US20090250205A1 (en) * | 2005-03-30 | 2009-10-08 | Sietse Jelle Koopmans | Coiled Tubing Injector Head |
| CN102852485A (en) * | 2011-07-28 | 2013-01-02 | 南通天华和睿科技创业有限公司 | Continuous oil-pumping pipe device |
| CN105275417A (en) * | 2015-05-19 | 2016-01-27 | 中石化重庆涪陵页岩气勘探开发有限公司 | Method for running in and out coiled tubing production string |
| CN205100911U (en) * | 2015-08-10 | 2016-03-23 | 山东科瑞机械制造有限公司 | Coiled tubing's first device of injection |
| CN105064934A (en) * | 2015-08-26 | 2015-11-18 | 东营天华石油技术开发有限公司 | Coiled tubing device and operation method capable of remote control lifting and lowering |
| CN107503706A (en) * | 2017-10-12 | 2017-12-22 | 中国海洋石油总公司 | A kind of underwater well workover assembly |
| CN111448362A (en) * | 2017-12-19 | 2020-07-24 | 韦尔泰克有限公司 | Offshore Coiled Tubing System |
| CN208364075U (en) * | 2018-07-06 | 2019-01-11 | 张兴荣 | Intelligent digitalized coiled tubing injection head |
| CN111561299A (en) * | 2020-05-26 | 2020-08-21 | 中海石油(中国)有限公司 | Liquid drainage and gas production operation system and operation method suitable for engineering ship |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530517A (en) * | 2021-09-17 | 2021-10-22 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
| CN113530517B (en) * | 2021-09-17 | 2021-12-14 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
| CN114704216A (en) * | 2022-06-06 | 2022-07-05 | 山东威盟石油机械有限公司 | Coiled tubing operating system |
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|---|---|
| CN113006717B (en) | 2024-03-08 |
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