CN102691493B - Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method - Google Patents
Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method Download PDFInfo
- Publication number
- CN102691493B CN102691493B CN201210182455.0A CN201210182455A CN102691493B CN 102691493 B CN102691493 B CN 102691493B CN 201210182455 A CN201210182455 A CN 201210182455A CN 102691493 B CN102691493 B CN 102691493B
- Authority
- CN
- China
- Prior art keywords
- fracturing
- coiled tubing
- casing
- packer
- string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005488 sandblasting Methods 0.000 title abstract description 5
- 239000004576 sand Substances 0.000 claims abstract description 31
- 238000012856 packing Methods 0.000 claims description 30
- 230000011218 segmentation Effects 0.000 claims description 20
- 241000239290 Araneae Species 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and a casing fracturing method, which are suitable for application in vertical wells and horizontal wells in the petroleum industry, in particular for sectional fracturing of unconventional oil-gas reservoir horizontal wells such as tight sandstone wells. The fracturing pipe column comprises a safety joint, a centralizer, a hydraulic jet tool and a reverse circulation valve, which are connected to a continuous oil pipe in sequence, wherein a mechanical continuous oil pipe fracturing packer is connected below the reverse circulation valve. The sectional casing fracturing method is used for placing the fracturing pipe column provided with the mechanical continuous oil pipe fracturing packer into a casing in a well through the continuous oil pipe; and by the method, a fracturing well section closest to the bottom of the well is fractured at first, and then the fracturing well section is packed by using the mechanical continuous oil pipe fracturing packer. By the continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and the casing fracturing method, a sand stopper is not needed as an isolation section, so that the sand stopper is not needed to be subjected to back flushing, the production cost is reduced, and multi-layer section fracturing operation for a short horizontal well section or straight well section can be realized.
Description
Technical field
The present invention relates to sleeve pipe sand fracturing completion method and the instrument of petroleum industry, particularly a kind of coiled tubing segmentation abrasive perforating casing fracturing tubing string and staged fracturing method, be suitable for applying in super dark straight well and horizontal well, be particularly useful for the staged fracturing of the unconventional oil-gas reservoir horizontal wells such as tight sand.
Background technology
The method of domestic and international application coiled tubing injection sheath staged fracturing is, in casing cementing completion horizontal well, adopts coiled tubing to be lowered to the tubing string string with hydrajet tool, from coiled tubing adds sand blasting perforation, and sleeve pipe sand fracturing.After complete one section of pressure break, in sleeve pipe, keep somewhere one section of sand plug as isolation, drag tubing string and carry out abrasive perforating and pressing crack construction to next section.This method adopts casing fracturing, can realize fairly large pressure break.But sand plug is as staged isolation, horizontal segment that need to be longer, needs, with coiled tubing, sand plug is flushed out to pit shaft after pressure break completes.It is longer that this technique exists construction period, and fracturing fluid recovery (backflow) is polluted reservoir not in time, and back-up sand need to be compared with long horizontal sections, and sand plug rinses the problems such as difficulty.
Also there is in the prior art the plain tubing of employing as fracturing string, if the patent No. is 200810105642 < < self-breaking glue solution body plug horizontal well in segments perforating and fracturing technique and plug > >, the instrument of segmentation adopts self-breaking glue solution body plug, withstand voltage lower, and horizontal segment that need to be longer is placed liquid gum plug.Although employing casing fracturing, can realize fairly large pressure break; But liquid gum plug is as staged isolation, and horizontal segment that need to be longer, generally needs 100m-150m guarantee isolation effect, causes the interior number of fragments of certain length horizontal segment limited, and bore long horizontal sections investment and all increases greatly of technical difficulty.After completing, pressure break needs, with coiled tubing, liquid gum plug is flushed out to pit shaft.It is longer that this technique exists construction period, and fracturing fluid recovery (backflow) is polluted reservoir not in time, fills out liquid gum plug and need to, compared with long horizontal sections, rinse the limitation such as difficulty.The patent No. is that 200810105643 < < packer packing multi-layer hydropower abrasive perforating and fracturing integrated technique > > and the patent No. are 200710129818 < < horizontal well machinery staged fracturing tool string > >, to adopt the segmentation of hydraulic expanding packer plain tubing fixed tubular column, the mode that the ball of throwing step by step different-diameter is opened sliding sleeve realizes staged fracturing, because latus rectum in oil pipe is limited, cannot meet the needs of extensive pressure break equally, on the other hand need to be necessarily differential owing to throwing the ball of different-diameter, maximum segment number is also subject to casing size restriction, cannot realize more multistage pressure break.The patent No. is that 200720169453 < < horizontal well is carried fracturing string > > on once, with plain tubing, to drag packer to return pressure break on piecemeal, because latus rectum in oil pipe is little compared with sleeve pipe, cannot realize extensive pressure break; After complete one section of pressure break, need to wait for after strata pressure spreads completely and just can drag tubing string, caused long construction period, efficiency of construction is lower, and fracturing fluid recovery (backflow) is polluted reservoir not in time.Owing to adopting plain tubing to drag hydrostatic set packer, during pressure break, adopt oil pipe to carry out pressure break, pressure break scale is less.
Summary of the invention
The object of this invention is to provide a kind of coiled tubing segmentation abrasive perforating casing fracturing tubing string and casing fracturing method; staged fracturing for unconventional oil-gas reservoir horizontal wells such as tight sands; solve prior art with after coiled tubing pressure break; in sleeve pipe, keep somewhere sand plug as the defect of isolation construction; reduction of erection time; return in time discharge fracturing fluid, protection oil reservoir, the scope of application and the result of use of raising coiled tubing pressure break.
Technical scheme of the present invention is:
A coiled tubing segmentation abrasive perforating casing fracturing tubing string, comprises the safety joint, centralizer, hydrajet tool and the reverse circulation valve that are connected in turn on coiled tubing, is also connecting mechanical type coiled tubing fracturing packer below reverse circulation valve.
The method of segmentation casing fracturing of the present invention is by coiled tubing G.I.H sleeve pipe by the fracturing string that mechanical type coiled tubing fracturing packer is housed, first the pressure break fractured well section in close shaft bottom, is used mechanical type coiled tubing fracturing packer packing fractured well section.
Compared with prior art, the present invention has following significant effect and progress:
1, due to the horizontal segment at horizontal well, coiled tubing cannot provide and enough transfer weight, cannot use conventional base-type mechanical packer, and mechanical type coiled tubing fracturing packer in the present invention is connected with coiled tubing by top connection, lower fashionable, the track pin of its packer is at deblocking track, and balanced type is waved slips in free state.After destination locations, utilize the upper lifting force of coiled tubing to make balanced type wave slips commutation and enter and set track, this mechanical type of grappling coiled tubing fracturing packer.
2, the slip segment that balanced type is waved slips is owing to being that bulk, its globality are strong, and the slips of comparing conventional independent split-type is more sturdy and durable.
3, for mechanical type coiled tubing fracturing packer, two kinds of deblocking method for releasing have been designed: conventional release, safety joint discharge.Under normal circumstances, fracturing string during not by sand card, adopts conventional release, after pressure break completes, coiled tubing is transferred, can deblocking mechanical type coiled tubing fracturing packer.If fracturing string is by special circumstances such as sand cards, on energetically, carry coiled tubing, break safety joint to discharge deblocking mechanical type coiled tubing fracturing packer.
4,, at net horizontal section, even use plain tubing and common packer also cannot set by transferring gravity realization, coiled tubing cannot provide this gravity of transferring especially.And mechanical type coiled tubing fracturing packer compact conformation of the present invention, its Design of length, between 1.5m-1.7m, can realize the staged fracturing of more multistage number, connect coiled tubing lower can by carry coiled tubing, obtain upper lifting force and realize and setting.For coiled tubing cannot provide, transfer gravity, cannot use common packer packing every stratum, use approach is provided.
5, mechanical type coiled tubing fracturing packer is simple in structure, and interior latus rectum is large, can meet the needs of large discharge capacity anti-flushing well, greatly reduces the sand card risk of fracturing string.
The present invention connects mechanical type coiled tubing fracturing packer in fracturing string in sum, uses coiled tubing driving machinery formula coiled tubing fracturing packer packing fractured interval, carries out segmentation casing fracturing, and the setting position of its packer is flexible, easy to operate.It is short that mechanical type coiled tubing fracturing packer sets the length of track, set, deblocking conversion is reliable, required distance between fractured interval is little, can in pit shaft, can easily, densely realize the fracturing work of multi-section multi-layer, has expanded the scope of application that coiled tubing carries out casing fracturing.The withstand voltage height of its mechanical type coiled tubing fracturing packer, can meet larger pressure break scale needs, has shortened the pressing crack construction cycle.The present invention without sand plug as distance piece, not only do not need backwash sand plug, reduce cost of production, and also can realize the fracturing work of multi-section multi-layer for shorter net horizontal section or straight well section, for the recovery ratio that improves tight sand oil gas field, there is positive effect.
Accompanying drawing explanation
Fig. 1 is structural representation and the fundamental diagram of fracturing string of the present invention.
Fig. 2 is the structural representation of mechanical type coiled tubing fracturing packer of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.Referring to Fig. 1 and Fig. 2, a kind of coiled tubing segmentation abrasive perforating casing fracturing tubing string comprises safety joint 2, centralizer 3, hydrajet tool 4 and the reverse circulation valve 5 being connected in turn on coiled tubing 1, is also connecting mechanical type coiled tubing fracturing packer 6 below reverse circulation valve 5.Mechanical type coiled tubing fracturing packer 6 comprises that central tube 6-2, balanced type wave slips and sealing mechanism, central tube 6-2 be provided be interconnected set track and deblocking track, balanced type is waved to slips and sealing mechanism, and to be arranged on central tube 6-2 upper, and central tube 6-2 two ends connect top connection 6-1 and lower contact 6-13.Balanced type is waved slips and is comprised baffle ring 6-3, slip spider 6-6 and slip segment 6-9, and baffle ring 6-3 is connected with slip spider 6-6; It is upper that spring housing 6-7 is set on central tube 6-2, by fixing pin 6-5, is connected with slip spider 6-6; The upper end cylindrical step of slip segment 6-9 is radially installed spring together with being mutually fastened and connected with the lower end of slip spider 6-6 inner circle step between slip segment 6-9 and spring housing 6-7, guarantees that balanced type is waved slips and casing wall has certain frictional force.Baffle ring 6-3 is provided with track pin 6-4, the rail block of track pin 6-4 end with on central tube 6-2 set track and deblocking track coordinates, can in setting track and deblocking track, be free to slide, so can drive whole balanced type to wave that slips sets and deblocking.Balanced type is waved in slips and is at least provided with three slip segment 6-9, and the outside body of slip segment 6-9 is provided with groove, built-in slips ring 6-8; Slips ring 6-8 is split ring, makes the slip segment 6-9 can spreading.Sealing mechanism comprises packing element upper baffle ring 6-10, packing element 6-11 and packing element lower baffle ring 6-12, packing element upper baffle ring 6-10 is connected with central tube 6-2, packing element lower baffle ring 6-12 is connected with lower contact 6-13, and packing element 6-11 is arranged between packing element upper baffle ring 6-10 and packing element lower baffle ring 6-12; The outside of packing element upper baffle ring 6-10 is the conical surface, slip segment 6-9 can be backed down.The length setting of mechanical type coiled tubing fracturing packer 6, between 1.5m-1.7m, connects target seeker 7 in its bottom, facilitates being lowered to of fracturing string.
Use a kind of segmentation casing fracturing method of coiled tubing segmentation abrasive perforating casing fracturing tubing string, the fracturing string that mechanical type coiled tubing fracturing packer 6 is housed is passed through in coiled tubing 1 G.I.H sleeve pipe, first the pressure break fractured well section in close shaft bottom, is used mechanical type coiled tubing fracturing packer 6 packing fractured well sections.While using mechanical type coiled tubing fracturing packer 6 packing fractured well section, mechanical type coiled tubing fracturing packer 6 is placed in to the below of fractured well section, by after carrying on coiled tubing 1 and setting, from coiled tubing 1, add sand by hydrajet tool 4 abrasive perforatings, in sleeve pipe sand fracturing.After sleeve pipe sand fracturing completes, above carry coiled tubing 1, the reverse circulation valve 5 of fracturing string is opened, unnecessary fracturing sand backwash is gone out to pit shaft; In continuation, carry coiled tubing 1, make mechanical type coiled tubing fracturing packer 6 deblockings, by coiled tubing 1 drag fracturing tubing string, to next fractured well section, complete in an identical manner other fractured well section.In fracturing process, as fracturing string sand card situation, carry coiled tubing 1 on can be energetically, fracturing string is disconnected from safety joint 2, from well, trip out coiled tubing 1; Re-using Special fishing tool goes into the well to salvage and is trapped in the fracturing string in well.
Concrete operation method is as follows: adopt coiled tubing 1 that fracturing string is lowered in horizontal well, mechanical type coiled tubing fracturing packer 6 is in being lowered to process, its balanced type is waved the free state of slips in mechanical type coiled tubing fracturing packer 6 deblocking tracks, in being lowered to, can not set.After the fractured well section down to the most close shaft bottom, mechanical type coiled tubing fracturing packer 6 is placed in to the below of fractured well section, by carrying fracturing string on coiled tubing 1.Owing to having frictional force between its slip segment 6-9 and sleeve pipe, when top connection 6-1 drives central tube 6-2 up, track pin 6-4 on baffle ring 6-3 is changed to setting track by deblocking track, and it is up that fracturing string continues, and drives balanced type to wave the sealing mechanism of slips and below thereof up together.When reach mechanical type coiled tubing fracturing packer 6 set in advance pressure design value time, the conical surface of packing element upper baffle ring 6-10 is up along the inner circle of slip segment 6-9, by slip segment 6-9 spreading.When the upper lifting force of coiled tubing 1 reach mechanical type coiled tubing fracturing packer 6 set setting value time, be subject to keeping out of slip segment 6-9, packing element upper baffle ring 6-10 is forced to descending, and then extruding packing element 6-11 expansion sets, and packing element lower baffle ring 6-12 is relative with central tube 6-2 with lower contact 6-13, maintain static, by on carry coiled tubing 1, realize setting of mechanical type coiled tubing fracturing packer 6.Now in sleeve pipe, can implement to spray and pressing crack construction, in injection and fracturing process, along with the rising of coiled tubing 1 with casing annulus pressure, the sealing performance of mechanical type coiled tubing fracturing packer 6 constantly raises.From coiled tubing 1 adds sand blasting perforation, sleeve pipe sand fracturing.After pressure break completes, above carry fracturing string, reverse circulation valve 5 is opened, and unnecessary fracturing sand backwash is gone out to pit shaft, guarantees that fracturing string can sand card.Then transfer fracturing string, the balanced type of mechanical type coiled tubing fracturing packer 6 is waved slips and is commutated to deblocking track by setting track, and mechanical type coiled tubing fracturing packer 6 gets final product deblocking.With coiled tubing 1 drag fracturing tubing string, above carry to next fractured well section, mechanical type coiled tubing fracturing packer 6 is placed in to the below of fractured well section, in the same way pressing crack construction.In fracturing process, if meet fracturing string sand card situation, carry coiled tubing 1 on can be energetically, fracturing string is disconnected from safety joint 2, trip out coiled tubing 1, then be lowered to fishing tool and salvage fracturing string, construction sequence is simple.
Claims (8)
1. a coiled tubing segmentation abrasive perforating casing fracturing tubing string, comprise the safety joint (2), centralizer (3), hydrajet tool (4) and the reverse circulation valve (5) that are connected in turn on coiled tubing (1), it is characterized in that also connecting mechanical type coiled tubing fracturing packer (6) in the below of reverse circulation valve (5)
;mechanical type coiled tubing fracturing packer (6) comprises that central tube (6-2), balanced type wave slips and sealing mechanism, central tube (6-2) be provided be interconnected set track and deblocking track, balanced type is waved to slips and sealing mechanism, and to be arranged on central tube (6-2) upper, and central tube (6-2) two ends connect top connection (6-1) and lower contact (6-13); Balanced type is waved slips and is comprised baffle ring (6-3), slip spider (6-6) and slip segment (6-9), and baffle ring (6-3) is connected with slip spider (6-6); It is upper that spring housing (6-7) is set on central tube (6-2), by fixing pin (6-5), is connected with slip spider (6-6); Together with the upper end cylindrical step of slip segment (6-9) is fastened and connected mutually with the lower end of slip spider (6-6) inner circle step
,between slip segment (6-9) and spring housing (6-7), radially install spring.
2. a kind of coiled tubing segmentation abrasive perforating casing fracturing tubing string according to claim 1, it is characterized in that, described baffle ring (6-3) is provided with track pin (6-4), the rail block of track pin (6-4) end with on central tube (6-2) set track and deblocking track coordinates, can in setting track and deblocking track, be free to slide.
3. a kind of coiled tubing segmentation abrasive perforating casing fracturing tubing string according to claim 1, it is characterized in that, described balanced type is waved in slips and is at least provided with three slip segments (6-9), and the outside body of slip segment (6-9) is provided with groove, built-in slips ring (6-8); Slips ring (6-8) is split ring.
4. a kind of coiled tubing segmentation abrasive perforating casing fracturing tubing string according to claim 1, it is characterized in that, described sealing mechanism comprises packing element upper baffle ring (6-10), packing element (6-11) and packing element lower baffle ring (6-12), packing element upper baffle ring (6-10) is connected with central tube (6-2), packing element lower baffle ring (6-12) is connected with lower contact (6-13), and packing element (6-11) is arranged between packing element upper baffle ring (6-10) and packing element lower baffle ring (6-12); The outside of packing element upper baffle ring (6-10) is the conical surface
;the length setting of mechanical type coiled tubing fracturing packer (6), between 1.5m-1.7m, connects target seeker (7) in its bottom.
5. right to use requires the method for the segmentation casing fracturing of 1 one kinds of coiled tubing segmentation abrasive perforating casing fracturing tubing strings, it is characterized in that the fracturing string that mechanical type coiled tubing fracturing packer (6) will be housed is by coiled tubing (1) G.I.H sleeve pipe, first the pressure break fractured well section in close shaft bottom, is used mechanical type coiled tubing fracturing packer (6) packing fractured well section.
6. the method for segmentation casing fracturing according to claim 5, while it is characterized in that described use mechanical type coiled tubing fracturing packer (6) packing fractured well section, mechanical type coiled tubing fracturing packer (6) is placed in to the below of fractured well section, by after carrying on coiled tubing (1) and setting, from coiled tubing (1), add sand by hydrajet tool (4) abrasive perforating, in sleeve pipe sand fracturing.
7. the method for segmentation casing fracturing according to claim 6, is characterized in that after sleeve pipe sand fracturing completes, and above carries coiled tubing (1), and the reverse circulation valve (5) of fracturing string is opened, and unnecessary fracturing sand backwash is gone out to pit shaft; In continuation, carry coiled tubing (1), make mechanical type coiled tubing fracturing packer (6) deblocking, by coiled tubing (1) drag fracturing tubing string to next fractured well section.
8. according to the method for the segmentation casing fracturing described in claim 5 or 6, it is characterized in that in fracturing process, as fracturing string sand card situation, carry coiled tubing (1) on can be energetically, fracturing string is disconnected from safety joint (2), from well, trip out coiled tubing (1); Re-using Special fishing tool goes into the well to salvage and is trapped in the fracturing string in well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182455.0A CN102691493B (en) | 2012-06-05 | 2012-06-05 | Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182455.0A CN102691493B (en) | 2012-06-05 | 2012-06-05 | Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102691493A CN102691493A (en) | 2012-09-26 |
| CN102691493B true CN102691493B (en) | 2014-11-26 |
Family
ID=46857211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210182455.0A Active CN102691493B (en) | 2012-06-05 | 2012-06-05 | Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102691493B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032060A (en) * | 2012-11-08 | 2013-04-10 | 中国石油天然气股份有限公司 | Horizontal well coiled tubing hydraulic sand blasting multi-cluster perforation annular sand adding multi-section fracturing process |
| CN103184867B (en) * | 2013-02-28 | 2015-12-23 | 中国石油集团川庆钻探工程有限公司 | Packer jetting tool ground simulation method suitable for multistage hydraulic jetting fracturing |
| CN104213891B (en) * | 2013-06-05 | 2017-11-07 | 中国石油天然气股份有限公司 | Coiled tubing controllable packer process pipe column for old well repeated reconstruction |
| CN103573241A (en) * | 2013-08-06 | 2014-02-12 | 中国石油天然气股份有限公司 | Horizontal well casing cementing pressure balance sliding sleeve annulus sand-adding multi-section fracturing process |
| CN104153753B (en) * | 2014-08-26 | 2017-04-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Horizontal well volume fracturing tubular column and method based on conventional oil tube pressure dragging |
| CN104405331B (en) * | 2014-12-01 | 2017-12-22 | 东营市福利德石油科技开发有限责任公司 | A kind of ocean deepwater well tubing packer |
| CN104564001B (en) * | 2014-12-03 | 2017-06-13 | 中国石油化工股份有限公司 | The method of many cluster pressure breaks of horizontal well and many cluster perforating and fracturing tubing strings of implementation the method |
| CN105443099B (en) * | 2015-12-09 | 2017-12-29 | 中国石油化工股份有限公司 | Fracturing process is returned on a kind of preset tubing string completion horizontal well of bore hole |
| CN105443101B (en) * | 2016-01-14 | 2018-05-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of double envelope single deck tape-recorder staged fracturing technology tube pillars of compression and its fracturing process |
| CN105696994B (en) * | 2016-01-20 | 2018-06-12 | 中国石油化工股份有限公司 | The device of envelope pressure is sprayed for multidirectional pressure control type and includes its tubing string |
| CN105525902B (en) * | 2016-01-21 | 2019-01-22 | 中国石油化工股份有限公司 | Fracturing process is returned on a kind of complete well water horizontal well of suspension screen casing |
| CN106437618B (en) * | 2016-09-06 | 2019-01-18 | 中国石油天然气股份有限公司 | Segmented well completion pipe column, segmented reconstruction pipe column and oil well reconstruction device |
| CN107178354B (en) * | 2017-08-02 | 2019-02-19 | 荆州市赛瑞能源技术有限公司 | A stepless drag fracturing process in casing and fracturing tool string |
| CN111119826B (en) * | 2018-11-01 | 2022-05-20 | 中石化石油工程技术服务有限公司 | Coiled tubing staged fracturing string and string fracturing method |
| CN111335826B (en) * | 2020-04-10 | 2024-07-23 | 大庆长垣能源科技有限公司 | Hydraulic rigid centralizer |
| CN111456691A (en) * | 2020-05-27 | 2020-07-28 | 中国石油天然气集团有限公司 | Method and device for single-section double-cluster continuous oil pipe bottom seal dragging fracturing |
| CN112523734A (en) * | 2020-09-14 | 2021-03-19 | 中国石油集团渤海钻探工程有限公司 | Oil pipe dragging fracturing string with packer as bottom seal and fracturing 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 |
| CN114293947B (en) * | 2021-12-30 | 2022-12-20 | 扬州睿德石油机械有限公司 | Packer (CN) |
| CN117684921B (en) * | 2024-02-04 | 2024-04-23 | 新疆石油管理局有限公司 | Coiled tubing shale reservoir deep penetration pulse jet drilling device and use method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105121A (en) * | 2007-07-27 | 2008-01-16 | 大庆油田有限责任公司 | Horizontal well machinery staged fracturing tool string |
| CN101446187A (en) * | 2008-12-30 | 2009-06-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Twin packer hydro-jet fracturing technology |
| CN201714338U (en) * | 2010-07-12 | 2011-01-19 | 杜开全 | Multifunctional double-slip packer |
| CN202628046U (en) * | 2012-06-05 | 2012-12-26 | 中国石油化工股份有限公司 | Sectional sand blasting perforation sleeve fracturing string of continuous oil tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7401651B2 (en) * | 2005-09-27 | 2008-07-22 | Smith International, Inc. | Wellbore fluid saver assembly |
-
2012
- 2012-06-05 CN CN201210182455.0A patent/CN102691493B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105121A (en) * | 2007-07-27 | 2008-01-16 | 大庆油田有限责任公司 | Horizontal well machinery staged fracturing tool string |
| CN101446187A (en) * | 2008-12-30 | 2009-06-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Twin packer hydro-jet fracturing technology |
| CN201714338U (en) * | 2010-07-12 | 2011-01-19 | 杜开全 | Multifunctional double-slip packer |
| CN202628046U (en) * | 2012-06-05 | 2012-12-26 | 中国石油化工股份有限公司 | Sectional sand blasting perforation sleeve fracturing string of continuous oil tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102691493A (en) | 2012-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102691493B (en) | Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method | |
| CN202628046U (en) | Sectional sand blasting perforation sleeve fracturing string of continuous oil tube | |
| CN101624904B (en) | Open hole completion well sand resistant pipe string of sidetracking branch well and inserting type acid cleaning filling inner pipe string thereof | |
| AU780123B2 (en) | Expanding a tubular member | |
| RU2246001C1 (en) | Method for extracting deposits of viscous oils and bitumens | |
| CN107387050B (en) | A ball-pitched full-diameter fracturing sleeve | |
| RU2607832C2 (en) | Disconnecting tool | |
| CN101864922B (en) | Compression type dual-sealing open hole packer | |
| CN101915059B (en) | Process method for well completion at equal borehole diameter | |
| CN102482927A (en) | Apparatus and methods for sealing subterranean boreholes and performing other wireline downhole rotary operations | |
| CN101395337A (en) | Method and apparatus for selectively treating perforated casing | |
| GB2398582A (en) | System and method for maintaining zonal isolation in a wellbore | |
| CN201460803U (en) | Self-expanding packer when meeting oil and water | |
| CN104929603A (en) | Infinite stage type sectional cracking method for sleeve | |
| CN203961938U (en) | Packer staged fracturing technology tube pillar in a kind of horizontal well tube | |
| CN111425148A (en) | Casing pipe column applying toe end sliding sleeve to full-bore sliding sleeve and using method of casing pipe column | |
| CN202531037U (en) | Segmented completion pipe string of bottom water tight gas reservoir horizontal well | |
| CN201486538U (en) | Sand prevention pipe string used for open-hole well completion of side-drilled multilateral well and plug-in type acid cleaning filling inner pipe string thereof | |
| CN204371173U (en) | Anchoring device | |
| CN108204228B (en) | Composite fracturing process pipe column and using method thereof | |
| CN114562199B (en) | Cement leaking stoppage bores stopper integrated underground device | |
| CN106285563A (en) | Wall scraper and well-flushing wall scraping method | |
| CN202832360U (en) | Pre-salt 8 - 1 / 8 '' hydraulic packer | |
| CN203420698U (en) | Open hole horizontal well completion fracturing integrated pipe column | |
| US9109435B2 (en) | Monobore expansion system—anchored liner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Quansheng Inventor after: Zhang Jian Inventor after: Liu Jidong Inventor after: Zhang Feng Inventor after: Wang Zenglin Inventor after: Hao Jinke Inventor after: Li Yubao Inventor after: Lv Wei Inventor after: Lv Fanglei Inventor after: Sun Jian Inventor after: Cao Xuemei Inventor before: Zhang Quansheng Inventor before: Zhang Jian Inventor before: Zhang Feng Inventor before: Wang Zenglin Inventor before: Hao Jinke Inventor before: Li Yubao Inventor before: Lv Wei Inventor before: Lv Fanglei Inventor before: Sun Jian Inventor before: Cao Xuemei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG QUANSHENG ZHANG FENG WANG ZENGLIN HAO JINKE LI YUBAO LV WEI LV FANGLEI SUN JIAN CAO XUEMEI ZHANG JIAN TO: ZHANG QUANSHENG ZHANG FENG WANG ZENGLIN HAO JINKE LI YUBAO LV WEI LV FANGLEI SUN JIAN CAO XUEMEI ZHANG JIAN LIU JIDONG |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |