CN114876419B - Flexible screen pipe with automatic reset function - Google Patents
Flexible screen pipe with automatic reset function Download PDFInfo
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- CN114876419B CN114876419B CN202210535698.1A CN202210535698A CN114876419B CN 114876419 B CN114876419 B CN 114876419B CN 202210535698 A CN202210535698 A CN 202210535698A CN 114876419 B CN114876419 B CN 114876419B
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- reset
- screen
- pipe
- sieve
- screen pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Abstract
The invention discloses a flexible screen pipe with an automatic resetting function, which relates to the technical field of flexible screen pipes, and specifically comprises at least two screen pipes, a resetting element and a fixing device; two ends of the screen pipe are provided with two bulbs at most, namely one end of at least one screen pipe of the two connected screen pipes is provided with a bulb; two ends of the reset element are respectively connected with the interiors of the two sieve tubes, and provide reset force for the sieve tubes, so that the axes of the sieve tubes are kept consistent; the fixing device is used for connecting one end, provided with the ball head, of one screen pipe with any end of the other screen pipe; according to the invention, through the arrangement of the reset element, after the flexible sieve tube enters the horizontal section, the axes of the sieve tubes are kept consistent under the action of the reset element, so that the sieve tube is not easy to twist, the running resistance is reduced, and the extension length is increased.
Description
Technical Field
The invention relates to the technical field of flexible sieve tubes, in particular to a flexible sieve tube with an automatic resetting function.
Background
The ultra-short radius horizontal well and branch well technology is an effective technology for improving single well productivity, developing a thin oil layer with complex oil-water relationship and excavating and submerging the rest of a near-wellbore reservoir, and one of core technologies is a sand control technology during well completion operation. However, because the ultra-short radius well has large slope and small curvature radius, the conventional rigid screen pipe cannot be put into the well, and the sand prevention by using the flexible screen pipe is a good choice.
The conventional flexible screen pipe is prevented from swinging after entering the horizontal section, so that friction force is continuously accumulated and increased, and the downhole operation capacity of the flexible screen pipe is seriously affected.
Disclosure of Invention
The invention aims at: the flexible screen pipe with the automatic resetting function is provided for solving the problems that friction force is continuously accumulated and increased after a conventional flexible screen pipe enters a horizontal section and the downhole operation capacity of the flexible screen pipe is seriously affected due to the fact that the friction force is prevented from swinging, the axes of the screen pipes are kept consistent under the action of a resetting element after the conventional flexible screen pipe enters the horizontal section, torsion is not easy to occur, running resistance is reduced, and the extension length is improved.
The technical scheme of the invention is as follows:
a flexible screen pipe with automatic resetting function specifically comprises the following structures:
at least two screen pipes, wherein two ends of each screen pipe are provided with at most two ball heads; one end of at least one screen pipe of the two connected screen pipes is provided with a ball head; the screen pipes are assembled in sequence, and the ball head is matched with the fixing device, so that the angle change of the screen pipes can be realized; preferably, the screen pipe can be divided into a single-ball screen pipe and a double-ball screen pipe, wherein the ball head of the double-ball screen pipe is integrated with the screen pipe base pipe, the ball head is obtained by bulging the end part of the screen pipe base pipe, and a first ball seat is sleeved on the screen pipe base pipe in advance before forming;
the two ends of the reset element are respectively connected with the inside of the two sieve tubes, and provide reset force for the sieve tubes, so that the axes of the sieve tubes are kept consistent; namely, after the sieve tube enters the horizontal section, the sieve tube can be quickly reset under the action of the reset element, so that the axes of the sieve tubes are kept consistent, torsion is not easy to occur, the running resistance is reduced, and the extension length is increased;
the fixing device is used for connecting one end, provided with the ball head, of one screen pipe with any one end of the other screen pipe; after the fixing device is matched with the ball head, the angle of the sieve tube can be adjusted.
Further, the screen comprises:
the screen pipe base pipe is provided with a flow channel for liquid to flow; preferably, the flow channel is a base pipe sieve hole formed on a sieve pipe base pipe or a base pipe through groove formed on the sieve pipe base pipe;
the screen is sleeved on the screen base pipe, and the flow channel and the screen jointly form a flow path of liquid.
Further, the reset element is arranged in the screen pipe base pipes, and two ends of the reset element are respectively connected with the screen pipe base pipes in the two screen pipes through reset fixing rings.
In this embodiment, the fixing device includes a first ball seat and a second ball seat;
the first ball seat and the second ball seat are sleeved on the screen pipe base pipe;
the first ball seat and the second ball seat are connected through threads;
ball grooves matched with the ball heads are formed in the first ball seat and the second ball seat; preferably, when the connecting ends of the two sieve tubes are all ball heads, the first ball seat and the second ball seat are sleeved on the sieve tube base tube, and the first ball seat and the second ball seat are connected through threads, so that the two ball heads are fixed in the first ball seat and the second ball seat, and the fixation is completed; when only one end of the connecting end of the two sieve tubes is a ball head, the first ball seat and the second ball seat are sleeved on the sieve tube base tube, one ball seat is rotated to be fixedly connected with the non-ball head end through threads, and then the first ball seat and the second ball seat are connected through threads to finish fixation; namely, an external thread is arranged at one end of the screen pipe base pipe, which is not provided with a ball head, and an internal thread matched with the ball seat of the screen pipe base pipe, which is not provided with the ball head, is arranged on the screen pipe base pipe.
Further, one end of the reset fixing ring is provided with a connecting end for connecting with the reset element, and the other end of the reset fixing ring is fixed in the sieve tube base tube through a locating pin; when in use, one end of the reset fixing ring is directly inserted into the reset element, and the other end is fixedly hung in the screen pipe base pipe through the locating pin.
Further, the outer diameter of the reset element is consistent with the inner diameter of the screen pipe base pipe;
the inner diameter of the reset element is consistent with the outer diameter of the connecting end on the reset fixing ring;
the outer diameter of the reset fixing ring is consistent with the inner diameter of the screen pipe base pipe; the size limitation is to ensure that the reset element can be stably fixed in the sieve tube base tube, so that the stability of the reset element is improved.
Further, the reset element is a reset spring.
Further, the reset element may also be a cylindrical elastic mechanism;
the cylindrical elastic mechanism includes: the connecting strip is provided with at least two connecting strips with elastic deformation capability and two fixing ends, and two ends of the connecting strip are respectively connected with the two fixing ends; the two fixed ends are connected into a whole through a plurality of connecting strips, and the connecting strips directly provide reset force.
Further, two clamping grooves for the positioning pins to horizontally pass through are formed in the reset fixing ring, an upward transverse groove and a downward transverse groove for the positioning pins to axially rotate are respectively formed in the two clamping grooves, and arc-shaped grooves matched with the positioning pins are formed in the tail ends of the transverse grooves;
the locating pin is fixed to pass through the screen pipe base pipe, the reset fixing ring is inserted into the screen pipe base pipe, the locating pin is inserted into the clamping groove, the reset fixing ring is rotated, the locating pin is inserted into the transverse groove, and then the reset fixing ring is moved inwards, so that the locating pin is clamped into the circular arc-shaped groove, and the fixing of the reset fixing ring is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. a flexible screen with auto-reset function, comprising: the two ends of the screen pipes are provided with at most two bulbs, namely one end of at least one screen pipe of the two connected screen pipes is provided with a bulb; the two ends of the reset element are respectively connected with the inside of the two sieve tubes, and provide reset force for the sieve tubes, so that the axes of the sieve tubes are kept consistent; the fixing device is used for connecting one end, provided with the ball head, of one screen pipe with any one end of the other screen pipe; through the setting of reset element for flexible screen pipe makes each screen pipe axis keep unanimous under reset element's effect after getting into the horizontal segment, is difficult for taking place to twist reverse, reduces the running resistance, promotes extension length.
Drawings
FIG. 1 is a schematic illustration of a flexible screen with auto-reset feature;
FIG. 2 is a schematic illustration of a reset retaining ring in a flexible screen with an automatic reset function;
fig. 3 is a schematic structural view of a column-shaped elastic mechanism in a flexible screen pipe with an automatic resetting function.
Reference numerals: the ball head comprises a ball head body, a 2-reset element, a 3-sieve tube base tube, a 4-flow channel, a 5-sieve, a 6-reset fixing ring, a 7-connecting end, an 8-locating pin, a 9-connecting strip, a 10-fixing end, an 11-clamping groove, a 12-transverse groove, a 13-circular arc groove, a 14-first ball seat, a 15-second ball seat and a 16-ball groove.
Detailed Description
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The features and capabilities of the present invention are described in further detail below in connection with examples.
Example 1
The conventional flexible screen pipe is prevented from swinging after entering the horizontal section, so that friction force is continuously accumulated and increased, and the downhole operation capacity of the flexible screen pipe is seriously affected.
The embodiment provides a flexible screen pipe with automatic reset function to above-mentioned problem, after getting into the horizontal segment, makes each screen pipe axis keep unanimous under reset element's effect, is difficult for taking place to twist reverse, reduces the running resistance, promotes extension length, has solved above-mentioned problem.
Referring to fig. 1-3, a flexible screen pipe with an automatic resetting function specifically includes the following structure:
at least two screen pipes, wherein at most two ball heads 1 are arranged at two ends of each screen pipe; namely, one end of at least one screen pipe of the two connected screen pipes is provided with a ball head 1; the screen pipes can be assembled in sequence, and the ball head 1 is matched with the fixing device, so that the angle change of the screen pipes can be realized; preferably, the screen pipe can be divided into a single-ball-head 1 screen pipe and a double-ball-head 1 screen pipe, wherein the ball head 1 of the double-ball-head 1 screen pipe is integrated with the screen pipe base pipe 3, the ball head 1 is obtained by bulging the end part of the screen pipe base pipe 3, and a first ball seat 14 is sleeved on the screen pipe base pipe 3 in advance before forming;
the two ends of the reset element 2 are respectively connected with the inside of the two sieve tubes, and provide reset force for the sieve tubes, so that the axes of the sieve tubes are kept consistent; namely, after the sieve tube enters the horizontal section, the sieve tube can be quickly reset under the action of the reset element 2, so that the axes of the sieve tubes are kept consistent, torsion is not easy to occur, the running resistance is reduced, and the extension length is increased;
the fixing device is used for connecting one end, provided with the ball head 1, of one screen pipe with any one end of the other screen pipe; after the fixing device is matched with the ball head 1 for use, the angle of the sieve tube can be adjusted.
In this embodiment, specifically, the screen includes:
a screen pipe base pipe 3, wherein a flow channel 4 for liquid to flow is formed in the screen pipe base pipe 3; preferably, the flow channel 4 is a base pipe sieve hole formed on the sieve pipe base pipe 3 or a base pipe through groove formed on the sieve pipe base pipe 3;
the screen 5 is sleeved on the screen base pipe 3, and the flow channel 4 and the screen 5 jointly form a flow path of liquid.
In this embodiment, specifically, the reset element 2 is disposed in the screen pipe base pipes 3, and two ends of the reset element 2 are respectively connected with the screen pipe base pipes 3 in the two screen pipes through the reset fixing rings 6.
In this embodiment, in particular, the fixing means comprise a first ball seat 14 and a second ball seat 15;
the first ball seat 14 and the second ball seat 15 are sleeved on the screen pipe base pipe 3;
the first ball seat 14 and the second ball seat 15 are connected through threads;
the first ball seat 14 and the second ball seat 15 are internally provided with ball grooves 16 matched with the ball head 1; preferably, when the connecting ends 7 of the two sieve tubes are all ball heads 1, the first ball seat 14 and the second ball seat 15 are sleeved on the sieve tube base tube 3, and the first ball seat 14 and the second ball seat 15 are connected through threads, so that the two ball heads 1 are fixed in the first ball seat 14 and the second ball seat 15, and the fixation is completed; when only one end of the connecting end 7 of the two sieve tubes is the ball head 1, the first ball seat 14 and the second ball seat 15 are sleeved on the sieve tube base tube 3, one ball seat is rotated to be fixedly connected with the end of the non-ball head 1 through threads, and then the first ball seat 14 and the second ball seat 15 are connected through threads to finish fixation; namely, an external thread is arranged at one end of the screen pipe base pipe 3, which is not provided with the ball head 1, and an internal thread matched with the ball seat of the screen pipe base pipe 3, which is not provided with the ball head 1, is arranged.
In this embodiment, one end of the reset fixing ring 6 is provided with a connection end 7 for connecting with the reset element 2, and the other end of the reset fixing ring 6 is fixed in the screen tube base tube 3 through a positioning pin 8; when in use, one end of the reset fixing ring 6 is directly inserted into the reset element 2, and the other end is fixedly hung in the screen pipe base pipe 3 through the locating pin 8.
In this embodiment, the outer diameter of the reset element 2 is consistent with the inner diameter of the screen base pipe 3;
the inner diameter of the reset element 2 is consistent with the outer diameter of the connecting end 7 on the reset fixing ring 6;
the outer diameter of the reset fixing ring 6 is consistent with the inner diameter of the screen pipe base pipe 3; the limitation on the size is to ensure that the reset element 2 can be stably fixed in the screen tube base tube 3, so that the stability of the reset element is improved.
Further, in this embodiment, the return element 2 is a return spring.
Further, in this embodiment, the reset element 2 may also be a cylindrical elastic mechanism;
the cylindrical elastic mechanism includes: at least two connecting strips 9 with elastic deformation capability and two fixing ends 10, wherein two ends of the connecting strips 9 are respectively connected with the two fixing ends; the two fixing ends 10 are connected into a whole through a plurality of connecting strips 9, and the connecting strips 9 directly provide reset force.
Further, in this embodiment, two clamping grooves 11 through which the positioning pins 8 horizontally pass are provided on the reset fixing ring 6, a transverse groove 12 which faces upwards and a transverse groove which faces downwards and is used for axially rotating the positioning pins is provided on the two clamping grooves 11, and a circular arc groove 13 which is matched with the positioning pins 8 is provided at the end of the transverse groove 12;
the locating pin 8 is fixed to pass through the screen pipe base pipe 3, the reset fixing ring 6 is inserted into the screen pipe base pipe 3, the locating pin 8 is inserted into the clamping groove 11, the reset fixing ring 6 is rotated again, the locating pin 8 is inserted into the transverse groove 12, then the reset fixing ring 6 is moved inwards, the locating pin 8 is clamped into the circular arc-shaped groove 13, and the fixing of the reset fixing ring 6 is completed.
The foregoing examples merely represent specific embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present application, which fall within the protection scope of the present application.
Claims (8)
1. A flexible screen having an automatic reset function, comprising:
at least two sieve tubes, wherein at most two ball heads (1) are arranged at two ends of each sieve tube;
the two ends of the reset element (2) are respectively connected with the inside of the two sieve tubes, and provide reset force for the sieve tubes, so that the axes of the sieve tubes are kept consistent;
the fixing device is used for connecting one end of one screen pipe, which is provided with the ball head (1), with any one end of the other screen pipe;
the reset element (2) is arranged in the sieve tube base tube (3), and two ends of the reset element (2) are respectively connected with the sieve tube base tubes (3) in the two sieve tubes through reset fixing rings (6);
one end of the reset fixing ring (6) is provided with a connecting end (7) used for being connected with the reset element (2), and the other end of the reset fixing ring (6) is fixed in the sieve tube base tube (3) through a locating pin (8);
the fixing device comprises a first ball seat (14) and a second ball seat (15);
the first ball seat (14) and the second ball seat (15) are sleeved on the screen pipe base (3);
and ball grooves (16) matched with the ball head (1) are formed in the first ball seat (14) and the second ball seat (15).
2. The flexible screen with automatic reset function according to claim 1, wherein the screen comprises:
a screen pipe base pipe (3), wherein a flow channel (4) for liquid to flow is formed in the screen pipe base pipe (3);
the screen (5) is sleeved on the screen base pipe (3), and the flow channel (4) and the screen (5) jointly form a liquid flow path.
3. A flexible screen pipe with automatic resetting function according to claim 2, characterized in that the flow channel (4) is a base pipe mesh opening on the screen pipe base pipe (3) or a base pipe through slot opening on the screen pipe base pipe (3).
4. A flexible screen with automatic return function according to claim 3, characterized in that the outer diameter of the return element (2) is kept identical to the inner diameter of the screen base pipe (3);
the inner diameter of the reset element (2) is consistent with the outer diameter of a connecting end (7) on the reset fixing ring (6);
the outer diameter of the reset fixing ring (6) is consistent with the inner diameter of the screen pipe base pipe (3).
5. A flexible screen with automatic return function according to claim 4, characterized in that the return element (2) is a return spring.
6. A flexible screen with automatic return function according to claim 4, characterized in that the return element (2) is a cylindrical elastic mechanism;
the cylindrical elastic mechanism includes: the connecting device comprises at least two connecting strips (9) with elastic deformation capability and two fixing ends (10), wherein two ends of the connecting strips (9) are respectively connected with the two fixing ends.
7. The flexible screen pipe with the automatic resetting function according to claim 1, wherein two clamping grooves (11) through which the positioning pins (8) horizontally pass are formed in the resetting fixed ring (6), a transverse groove (12) which faces upwards and a transverse groove which faces downwards and is used for axially rotating the positioning pins are respectively formed in the two clamping grooves (11), and an arc-shaped groove (13) matched with the positioning pins (8) is formed in the tail end of the transverse groove (12);
the locating pin (8) is fixed to pass through the sieve tube base tube (3), the reset fixing ring (6) is inserted into the sieve tube base tube (3), the locating pin (8) is inserted into the clamping groove (11), the reset fixing ring (6) is rotated again, the locating pin (8) is inserted into the transverse groove (12), then the reset fixing ring (6) is moved inwards, the locating pin (8) is clamped into the circular arc-shaped groove (13), and the fixing of the reset fixing ring (6) is completed.
8. A flexible screen with automatic reset function according to claim 1, characterized in that the first ball seat (14) and the second ball seat (15) are connected by screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210535698.1A CN114876419B (en) | 2022-05-17 | 2022-05-17 | Flexible screen pipe with automatic reset function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210535698.1A CN114876419B (en) | 2022-05-17 | 2022-05-17 | Flexible screen pipe with automatic reset function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114876419A CN114876419A (en) | 2022-08-09 |
| CN114876419B true CN114876419B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210535698.1A Active CN114876419B (en) | 2022-05-17 | 2022-05-17 | Flexible screen pipe with automatic reset function |
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| CN (1) | CN114876419B (en) |
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| DE2414926A1 (en) * | 1974-03-28 | 1975-10-09 | Vni I Pk I Osuscheniju Mestoro | Flexible coupling for large pipe line tubes - hydrogen separated by a temperature pressure system from the steam mixture is recirculated to combustion chamber |
| CA2441240A1 (en) * | 2002-09-17 | 2004-03-17 | Weatherford/Lamb, Inc. | Tubing connection arrangement |
| CN114135227A (en) * | 2020-09-04 | 2022-03-04 | 万晓跃 | High-stability short-radius deflecting drilling tool |
| CN216381335U (en) * | 2021-05-31 | 2022-04-26 | 中国海洋石油集团有限公司 | Flexible screen pipe and well completion pipe string |
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| US5460416A (en) * | 1993-08-02 | 1995-10-24 | Ameron, Inc. | Perforated fiber reinforced pipe and couplings for articulating movement |
| US5842522A (en) * | 1996-01-03 | 1998-12-01 | Halliburton Energy Services, Inc. | Mechanical connection between base pipe and screen and method for use of the same |
| FR2904653B1 (en) * | 2006-08-02 | 2008-10-10 | Euroslot Soc Par Actions Simpl | ARTICULATED EXTRACT PIPE |
| CN103244082A (en) * | 2013-04-10 | 2013-08-14 | 中国石油天然气集团公司 | Flexible first-time sand control sandblasting technique pipe |
| WO2015038265A2 (en) * | 2013-09-16 | 2015-03-19 | Exxonmobil Upstream Research Company | Downhole sand control assembly with flow control, and method for completing a wellbore |
| US10107077B2 (en) * | 2015-12-08 | 2018-10-23 | Troy Settle | Well cleaning system |
| CA2966123C (en) * | 2017-05-05 | 2018-05-01 | Sc Asset Corporation | System and related methods for fracking and completing a well which flowably installs sand screens for sand control |
| CN109138933B (en) * | 2018-07-27 | 2020-11-06 | 中国石油天然气股份有限公司 | Elastic screen pipe and sand control pipe column |
| CN110566165B (en) * | 2019-10-30 | 2021-05-28 | 河南理工大学 | Large-curvature horizontal open hole shaft flexible sieve tube running device and running method |
| CN111577216A (en) * | 2020-04-30 | 2020-08-25 | 天津金顺科技发展股份有限公司 | Sand control screen pipe with pipe body capable of being bent universally |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2414926A1 (en) * | 1974-03-28 | 1975-10-09 | Vni I Pk I Osuscheniju Mestoro | Flexible coupling for large pipe line tubes - hydrogen separated by a temperature pressure system from the steam mixture is recirculated to combustion chamber |
| CA2441240A1 (en) * | 2002-09-17 | 2004-03-17 | Weatherford/Lamb, Inc. | Tubing connection arrangement |
| CN114135227A (en) * | 2020-09-04 | 2022-03-04 | 万晓跃 | High-stability short-radius deflecting drilling tool |
| CN216381335U (en) * | 2021-05-31 | 2022-04-26 | 中国海洋石油集团有限公司 | Flexible screen pipe and well completion pipe string |
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| CN114876419A (en) | 2022-08-09 |
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