CN201162499Y - Thread connector of expansion sand-prevention screening tube - Google Patents
Thread connector of expansion sand-prevention screening tube Download PDFInfo
- Publication number
- CN201162499Y CN201162499Y CNU2008200189032U CN200820018903U CN201162499Y CN 201162499 Y CN201162499 Y CN 201162499Y CN U2008200189032 U CNU2008200189032 U CN U2008200189032U CN 200820018903 U CN200820018903 U CN 200820018903U CN 201162499 Y CN201162499 Y CN 201162499Y
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- screw thread
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- screw
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Abstract
The utility model provides a screw connector of an expandable sand prevention sieve vessel which connects different expandable sieve vessels together. The screw connector consists of a main body, a circular groove, threads, a slotted hole, screw holeS, a filter screen and a protective cover; wherein, both ends of the main body are provided with internal threads; the internal side of each thread is provided with a circular groove; the external side is evenly distributed with screw holes; the main body is evenly distributed with interlaced slotted holes; which match the threads; the circular groove of the connector is matched with the circular inserter on the joint of the expandable sieve vessel by threads and then fastened by a bolt; the external surface of the connector is covered with the filter screen and the protective cover to protect the sieve vessel and for sand prevention. The screw connector has the advantages that the axial expansion of the thread can be limited through the matching connection of threads and the conditional matching of the circular inserter and the circular groove, thereby ensuring that the expanded threads are smooth and integrated after expanding; the bolt is used to achieve fixed connection to prevent the sieve vessel from rotating and prevent threads form moving freely; slotting holes on the connector can reduce the expansion force, thus making the connector expand easily.
Description
Technical field
The utility model is a kind of screw thread coupling that is applicable to the expandable sand control screen pipe connection in fields such as oil drilling completion, sand control repairing.
Background technology
Traditional sand-preventing process is a cost with the sacrificial section production capacity mostly.Gravel pack completion easily produces depth-type filtration, causes screen casing to stop up, and influences output, and its implement complexity, expense are higher; Sand control techniques such as wire-wrapped screen, cutting seam sieve tube, metal wool screen casing, TBS screen casing have successively appearred in the mechanical sand control field, these screen casings are easy to install, low price, its shortcoming is in unconsolidated formation, easily in the annular space of screen casing and sleeve pipe, form silt particle cake layer, stop up the oil impregnate passage, the sand control ability; Owing to there is the sand ring, during the screen casing fishing, easy stuck screen casing causes overhaul, increases task difficulty and cost.
Along with the arrival of oil field development middle and later periods, special well increases year by year, and the completion of horizontal well, multilateral well, sidetracked hole and sand control are comparatively difficult.Therefore researching and developing sand control installation and the technology that sand controlling result is good, operating cost is low has been very necessary.
The expandable screen sand control technique is with in the screen insertion well, makes it that radial plastic deformation take place with bloat tool, realizes a kind of technology that expands, the back outer wall that expands is close to the borehole wall, realize the job requirements of " nullring sky ", improve sand controlling result greatly, prolong screen casing application life.Because when expandable screen expands with bloat tool, radial dimension also takes place and becomes big in the junction of screw connection structure, if adopt regular screw threads to connect, expansion rear thread shape deforms, its mechanical performance and sand controlling result reduce greatly, can not satisfy working condition requirement.Therefore, the screen casing link technique of the novel expandable screen special use of research has crucial technology and economic implications.
Summary of the invention
Permanent plastic deformation radially can take place in expandable sand control screen pipe, the purpose of increase the screen casing internal diameter to reach, optimizing casing programme, thus significantly reduce sand control treatment expense few and oil well production cost and raising oil well productivity.The regular screw threads jointing can not satisfy the working condition requirement of screen expansion, and the purpose of this utility model is the screw thread coupling that a kind of expansion sand control screen link technique is provided to the scene.
The utility model is to realize like this.The expansion sand control screen screw thread coupling connects as one different expandable screens, it is to be made of body, annular groove, screw thread, slot, screw, filter screen, protection outer cover, the body two ends have internal thread, the screw thread inboard has annular groove, the outside evenly is processed with screw, evenly cut slot on the body, finger place, slot two ends adopts the arc transition structure, only overlaps mutually at mid portion; Screw thread coupling is connected by threaded engagement with screen casing, and the annular groove of connector and the ring plugin on the expandable screen joint cooperatively interact simultaneously, and adopts bolton to connect, and it is firm that screen casing is connected with screw thread coupling; This external surface plays protection screen casing and sand control effect with filter screen and protection outer cover, and screen casing and screw thread coupling can be realized expanding by bloat tool.
Advantage of the present utility model is:
(1) expandable screen is connected by threaded engagement with screw thread coupling, and the restriction by ring plugin on the screen joint and the annular groove on the connector cooperates, the axial expansion of restriction screen casing prevents its distortion, dropout when expanding, and has guaranteed the smooth integrality of expansion rear thread;
(2) the body middle part internal diameter of screw thread coupling and expansion character and expandable screen are consistent, and have unified latus rectum before and after having guaranteed to expand; This external surface is loaded onto filter screen and protection outer cover, guarantees that connector has the sand controlling result identical with expandable screen.
(3) even slot on the body, a slot body middle part overlaps mutually, cooperates with expandable screen can form complete staggered seam after intact, reduces expansion force, makes screw thread coupling be easy to expansion; Form complete sand control screen after expanding, make screen casing not have clear band, thereby increase filter area, improve the sand controlling result of screen casing.
(4) after screw thread cooperatively interacts and connects, adopt bolton to connect between screw thread coupling and the screen joint, prevent the free movable of the random rotation between screen casing and screw thread in the work progress, the screw center of circle and slot center are on same straight line, when screw aligned, slot also aligned thereupon.
(5) by the expansion of expansion cone realization screw thread coupling, expansion ethmoid canal,posterior connector and screen casing cooperate intact, have good tension and anti-twisting property, can connect expandable screen preferably.
Description of drawings
The structural representation of accompanying drawing 1 screw thread coupling.
The assembling schematic diagram of accompanying drawing 2 screw thread couplings and expandable screen.
1 body, 2 annular grooves, 3 screw threads, 4 slots, 5 screws, 6 filter screens, 7 protection outer covers, 8 ring plugins, 9 expandable screens, 10 bolts
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
As shown in Figure 1, screen casing screw thread coupling body 1 two ends have internal thread 3, screw thread [3] inboard is processed with annular groove 2, the outside 4 screws 5 that evenly distribute, and body 1 middle part internal diameter, mechanical performance are identical with expandable screen 9, evenly cut slot 4 on the body 1,4 middle parts at body 1 of slot overlap mutually, and finger place in two ends adopts the arc transition structure, avoid stress to concentrate, body 1 external surface plays protection screen casing and sand control effect with filter screen 6 and protection outer cover 7;
As shown in Figure 2, expandable screen 9 and screw thread coupling are connected by screw thread 3, the annular groove 2 of connector and ring plugin 8 mutual restriction on the screen joint cooperate simultaneously, and be fastenedly connected by bolt 10, to guarantee that expandable screen 9 can closely be connected safely with screw thread coupling, expandable screen 9 and connector can be realized expanding by bloat tool.
As shown in Figure 1, even slot on screw thread coupling body 1,4 of slots overlap mutually in the connector middle part, cooperate with expandable screen 9 can form complete staggered seam after intact, make screw thread coupling be easier to expand, reduce expansion force, and screw thread coupling and expandable screen 9 have unified latus rectum, and the back of expanding forms complete sand control screen 9, makes expandable screen 9 not have clear band, thereby the increase filter area, the sand controlling result of raising screen casing.
As shown in Figure 2, on expandable screen 9 joints, have a ring plugin 8, when screw thread 3 is worked good, be embedded in just in the annular groove 2 of connector.The degree of depth of annular Plug Division groove is specific design as requested, can not deviate from the annular groove 2 of connector with the ring plugin 8 that guarantees expandable screen 9 in the expansion process.When expandable screen 9 expands under the bloat tool effect, radial plastic deformation also takes place in screw thread coupling, because the restriction of annular groove 2 and ring plugin 8 cooperates, the axial expansion of restriction screw thread 3, prevent the enlarging after screw thread 3 distortion when expandable screen 9 expands, disengagement and internal thread 3 expand, guaranteed expansion rear thread 3 smooth integralities.
As shown in Figure 2, expandable screen 9 and connector are fastenedly connected by bolt 10 after cooperatively interacting and being connected, prevent the free movable of the random rotation of 9 of expandable screens in the work progress and screw thread 3, screw 5 centers of circle and slot 4 are on same straight line, and after bolt 10 was fastening, slot 4 also aligned thereupon.
Claims (2)
1. expansion sand control screen screw thread coupling, it is to be made of body [1], annular groove [2], screw thread [3], slot [4], screw [5], filter screen [6] and protection outer cover [7], it is characterized in that: body [1] is a cylindrical section structure, its external diameter is greater than expandable screen [9] external diameter, two ends are processed with screw thread [3], screw thread [3] inboard is processed with annular groove [2], match with the ring plugin of processing on expandable screen [9] joint [8], and adopt bolt [10] to be fastenedly connected, annular groove [2] and ring plugin [8] cross sectional shape identical, be rectangular-shaped or trapezoidal shape; Evenly cut slot [4] on the body [1], finger place, slot [4] two ends adopts the arc transition structure, and only overlaps mutually in body [1] middle part; Body [1] external surface is with filter screen [6] and protection outer cover [7].
2. expansion sand control screen screw thread coupling as claimed in claim 1 is characterized in that: screw thread [3] and screw [5] all are positioned at the most stable node location of performance between the slot [4], and screw [5] center of circle and slot [4] center are on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200189032U CN201162499Y (en) | 2008-03-13 | 2008-03-13 | Thread connector of expansion sand-prevention screening tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200189032U CN201162499Y (en) | 2008-03-13 | 2008-03-13 | Thread connector of expansion sand-prevention screening tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162499Y true CN201162499Y (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200189032U Expired - Fee Related CN201162499Y (en) | 2008-03-13 | 2008-03-13 | Thread connector of expansion sand-prevention screening tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162499Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879101A (en) * | 2015-05-11 | 2015-09-02 | 中国石油天然气股份有限公司 | Full well section expandable screen |
| WO2016130159A1 (en) * | 2015-02-13 | 2016-08-18 | Halliburton Energy Services, Inc. | Sand control screen assemblies with erosion-resistant flow paths |
| CN107100595A (en) * | 2017-06-01 | 2017-08-29 | 中国石油集团渤海钻探工程有限公司 | A kind of expandable sand control screen pipe |
| CN109138934A (en) * | 2018-09-30 | 2019-01-04 | 大庆宏远华星科技有限公司 | A kind of pipe column type sand control screen |
| CN114837577A (en) * | 2022-04-22 | 2022-08-02 | 上海海隆石油管材研究所 | A kind of high anti-fatigue drilling tool joint and its processing method |
-
2008
- 2008-03-13 CN CNU2008200189032U patent/CN201162499Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016130159A1 (en) * | 2015-02-13 | 2016-08-18 | Halliburton Energy Services, Inc. | Sand control screen assemblies with erosion-resistant flow paths |
| GB2548065A (en) * | 2015-02-13 | 2017-09-06 | Halliburton Energy Services Inc | Sand control screen assemblies with erosion-resistant flow paths |
| US10358898B2 (en) | 2015-02-13 | 2019-07-23 | Halliburton Energy Services, Inc. | Sand control screen assemblies with erosion-resistant flow paths |
| GB2548065B (en) * | 2015-02-13 | 2021-04-07 | Halliburton Energy Services Inc | Sand control screen assemblies with erosion-resistant flow paths |
| CN104879101A (en) * | 2015-05-11 | 2015-09-02 | 中国石油天然气股份有限公司 | Full well section expandable screen |
| CN104879101B (en) * | 2015-05-11 | 2018-01-05 | 中国石油天然气股份有限公司 | Full well section expandable screen |
| CN107100595A (en) * | 2017-06-01 | 2017-08-29 | 中国石油集团渤海钻探工程有限公司 | A kind of expandable sand control screen pipe |
| CN107100595B (en) * | 2017-06-01 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | A kind of expandable sand control screen pipe |
| CN109138934A (en) * | 2018-09-30 | 2019-01-04 | 大庆宏远华星科技有限公司 | A kind of pipe column type sand control screen |
| CN114837577A (en) * | 2022-04-22 | 2022-08-02 | 上海海隆石油管材研究所 | A kind of high anti-fatigue drilling tool joint and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20110313 |