CN107740682B - Automatic regulation type plugging tool - Google Patents
Automatic regulation type plugging tool Download PDFInfo
- Publication number
- CN107740682B CN107740682B CN201711216587.XA CN201711216587A CN107740682B CN 107740682 B CN107740682 B CN 107740682B CN 201711216587 A CN201711216587 A CN 201711216587A CN 107740682 B CN107740682 B CN 107740682B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- tool
- pipe
- plugging
- moving sleeve
- 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.)
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Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to an automatic adjusting type plugging tool, and belongs to the technical field of plugging tools for oil and gas wells. The device consists of a tool pipe, an upper moving sleeve, a lower moving sleeve, a plugging bag, a sliding sleeve and a connecting pipe, wherein the lower moving sleeve is slidably arranged on the tool pipe through the lower blocking sleeve; the upper moving sleeve and the lower moving sleeve are provided with plugging bags by fixing caps. The plugging tool is simple in structure and good in practicability, when plugging is performed, the plugging bag can extend into the cracks more through the sliding of the lower moving sleeve and the upper moving sleeve, the problem that the existing plugging bag cannot deeply fill the cracks and is broken by the aid of the excessive pressure is solved, the problem that the plugging bag is separated from the plugging tool is solved, and the plugging tool is particularly suitable for plugging when large cracks are encountered in the process of collecting natural gas or petroleum drilling.
Description
Technical Field
The invention relates to an automatic adjusting type plugging tool, and belongs to the technical field of plugging tools for oil and gas wells.
Background
At present, when a large crack is encountered in the drilling process of collecting natural gas or petroleum, the leakage blocking bag is not tight or becomes loose in the crack after a certain time is passed because the leakage blocking bag cannot deeply fill the crack, so that the leakage blocking bag is invalid; meanwhile, when the bag type plugging tool is used for plugging, the phenomenon that the plugging bag is broken by a supporting way and the situation that the plugging bag is separated from the plugging tool are caused because the pressure in the plugging bag is too high, so that the improvement is necessary.
Disclosure of Invention
The invention aims at: the automatic adjusting type plugging tool is simple in structure, good in practicability and higher in plugging efficiency, and can effectively prevent the situation that a plugging bag is broken or separated from the plugging tool.
The technical scheme of the invention is as follows:
the utility model provides an automatically regulated formula leaking stoppage instrument, it comprises instrument pipe, upper moving sleeve, lower moving sleeve, leaking stoppage bag, sliding sleeve and connecting pipe, its characterized in that: the lower end of the tool pipe is provided with a guide shoe in a threaded manner, the tool pipe above the guide shoe is provided with a lower moving sleeve in a sliding manner through a lower baffle sleeve, the upper end of the tool pipe is provided with an upper moving sleeve in a sliding manner through an upper baffle sleeve, and liquid flow holes are uniformly distributed on the circumference of the tool pipe between the lower moving sleeve and the upper moving sleeve; the upper moving sleeve and the lower moving sleeve are provided with plugging bags through fixing caps, a rolling ball seat is arranged in an upper end port of the tool pipe through a connecting pipe, a rolling ball is movably arranged in the rolling ball seat, a fixing ring is arranged at the top of the rolling ball seat, a sliding sleeve is sleeved on the connecting pipe, a sliding sleeve spring is arranged between the sliding sleeve and the tool pipe, and the sliding sleeve is connected with the rolling ball in a contact manner.
The circumference of the lower end of the connecting pipe is provided with a supporting boss, and a connecting pipe through groove is formed in the connecting pipe on one side above the supporting boss.
The ball seat is formed by mutually attaching two semicircular cylinders, a ball recess is arranged in the ball seat, a ball seat sliding groove is axially formed in the outer surface of the ball seat on one side of the ball recess, and a communication hole is formed in the sliding groove.
The ball is provided with a central through hole, and the outer surface of the ball at one side of the central through hole is provided with rolling teeth.
A rack is arranged on the inner wall of the sliding sleeve and corresponds to the connecting pipe through groove; the sliding sleeve is engaged and connected with the rolling ball through the matching of the rack and the rolling teeth.
The sliding sleeve is provided with a clamping groove, the tool pipe corresponding to the clamping groove is provided with a clamping piece, and the tool pipe is movably clamped with the sliding sleeve through the matching of the clamping groove and the clamping piece.
The clamping piece comprises a mounting plate, an elastic sheet and a clamping head, wherein the clamping head is mounted on the mounting plate through the elastic sheet, the clamping head is a T-shaped body, and the end head of the clamping head is a slope.
The tool pipe above the clamping piece is provided with a connecting block through a spring, and the sliding sleeve above the clamping groove is provided with a connecting block groove.
The upper end and the lower end of the tool pipe are respectively provided with a variable diameter body.
The fixed cap is respectively in threaded connection with the lower movable sleeve and the upper movable sleeve.
The lower baffle sleeve is in threaded connection with the tool pipe, and the lower centralizer is installed on the lower baffle sleeve in a threaded manner.
And a movable sleeve spring and a sealing element are respectively arranged between the lower movable sleeve and the tool pipe as well as between the upper movable sleeve and the tool pipe.
The fixing ring is in threaded connection with the connecting pipe, and a low-pressure hole is formed in the tool pipe above the upper retaining sleeve.
The invention has the advantages that:
the automatic adjusting type plugging tool is simple in structure and good in practicability, and when plugging is carried out, the plugging bag can extend into a crack more through the sliding of the lower moving sleeve and the upper moving sleeve, so that the plugging efficiency is improved; and the situation that the leakage blocking bag is broken by a supporting way due to the overlarge pressure and separated from a leakage blocking tool due to the overlarge pressure can be prevented. Solves the problems that the prior plugging bag can not deeply fill cracks, the plugging bag is broken by a supporting way due to overlarge pressure and the plugging bag is separated from a plugging tool, and is particularly suitable for plugging when encountering large cracks in the process of collecting natural gas or petroleum drilling.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;
FIG. 3 is a schematic cross-sectional view of a connecting tube according to the present invention;
FIG. 4 is a schematic perspective view of a tee of the present invention;
FIG. 5 is a schematic cross-sectional view of the tee of the present invention;
FIG. 6 is a schematic cross-sectional view of the ball of the invention;
FIG. 7 is a schematic cross-sectional view of a sliding sleeve according to the present invention;
FIG. 8 is a schematic top view of a sliding sleeve according to the present invention;
fig. 9 is a schematic structural view of a fastening member according to the present invention.
In the figure: 1. tool pipe, 2, upper moving sleeve, 3, lower moving sleeve, 4, plugging bag, 5, sliding sleeve, 6, connecting pipe, 7, guide shoe, 8, lower blocking sleeve, 9, lower centralizer, 10, upper blocking sleeve, 11, liquid flow hole, 12, fixing cap, 13, low pressure hole, 14, ball seat, 15, supporting boss, 16, connecting pipe through groove, 17, ball, 18, spherical recess, 19, ball seat chute, 20, communication hole, 21, rolling tooth, 22, central through hole, 23, fixed ring, 24, sliding sleeve spring, 25, rack, 26, moving sleeve spring, 27, sealing member, 28, clamping groove, 29, clamping member, 30, mounting plate, 31, elastic sheet, 32, chuck, 33, spring, 34, connecting block, 35, connecting block groove.
Detailed Description
The automatic-adjustment type plugging tool consists of a tool pipe 1, an upper movable sleeve 2, a lower movable sleeve 3, a plugging bag 4, a sliding sleeve 5 and a connecting pipe 6, wherein the upper end and the lower end of the tool pipe 1 are respectively provided with a variable-diameter body; the center part of the tool pipe 1 is provided with a stepped hole; the lower end thread of the tool pipe 1 is provided with a guide shoe 7, the tool pipe 1 above the guide shoe 7 is provided with a lower moving sleeve 3 in a sliding manner through a lower retaining sleeve 8, the lower retaining sleeve 8 is in threaded connection with the tool pipe 1, and the lower retaining sleeve 8 is provided with a lower centralizer 9 in a threaded manner.
The upper end of the tool pipe 1 is provided with an upper moving sleeve 2 through an upper retaining sleeve 10 in a sliding manner, the upper retaining sleeve 10 is in threaded connection with the tool pipe 1, the upper retaining sleeve 10 is in contact connection with the upper moving sleeve 2, and a low-pressure hole 13 is formed in the tool pipe 1 above the upper retaining sleeve 10. Flow holes 11 are uniformly distributed on the circumference of the tool pipe 1 between the lower moving sleeve 3 and the upper moving sleeve 24; the upper moving sleeve 2 and the lower moving sleeve 3 are clamped with a plugging bag 4 through a fixing cap 12, and the fixing cap 12 is respectively in threaded connection with the upper moving sleeve 2 and the lower moving sleeve 3. A moving sleeve spring 26 and a sealing member 27 are respectively arranged between the lower moving sleeve 3 and the upper moving sleeve 2 and the tool pipe 1.
The upper end port of the tool pipe 1 is internally provided with a rolling ball seat 14 through a connecting pipe 6, the circumference of the lower end of the connecting pipe 6 is provided with a supporting boss 15, and the connecting pipe 6 on one side above the supporting boss 15 is provided with a connecting pipe through groove 16. The purpose of the connecting tube 6 is to support the roll ball seat 14. The ball seat 14 is formed by mutually attaching two semicircle cylinders, a ball recess 18 is arranged in the ball seat 14, a ball 17 is movably arranged in the ball seat 14 through the ball recess 18, a central through hole 22 is arranged on the ball 17, and rolling teeth 21 are arranged on the outer surface of the ball 17 on one side of the central through hole 22.
The ball seat 14 on one side of the ball recess 18 is axially provided with a ball seat sliding groove 19, and a communication hole 20 is arranged in the ball seat sliding groove 19. The top of the ball seat 14 is provided with a fixing ring 23, and the fixing ring 23 is in threaded connection with the connecting pipe 6 and is used for fixing the ball seat 14.
The connecting pipe 6 is sleeved with a sliding sleeve 5 in a sliding way, and a sliding sleeve spring 24 is arranged between the sliding sleeve 5 and the tool pipe 1. A rack 25 is arranged on the inner wall of the sliding sleeve 5 and corresponds to the connecting pipe through groove 16; the sliding sleeve 5 is connected with the rolling teeth 21 of the rolling ball 17 in a meshed manner through the connecting pipe through groove 16, the ball seat sliding groove 19 and the communicating hole 20 by the rack 25.
The lower end of the sliding sleeve 5 of the automatic-adjusting plugging tool is provided with a clamping groove 28, a tool pipe 1 corresponding to the clamping groove 28 is provided with a clamping piece 29, the clamping piece 29 is composed of a mounting plate 30, an elastic piece 31 and a clamping head 32, the mounting plate 30 is provided with the clamping head 32 through the elastic piece 31, the clamping head 32 is a T-shaped body, and the end head of the clamping head 32 is a slope. The tool pipe 1 and the sliding sleeve 6 are movably clamped by the clamping groove 28 and the clamping piece 29. The purpose of the catch 29 is to prevent the slide 5 from being displaced upwards under the action of the slide spring 24 when not in operation.
A connecting block 34 is arranged on the tool pipe 1 above the clamping piece 29 through a spring 33, and a connecting block groove 35 is arranged on the sliding sleeve 5 above the clamping groove 28.
When the automatic adjusting type plugging tool works, the automatic adjusting type plugging tool is clamped on a pipe column through the connecting block 34 and then is put into a crack of an oil gas well, in the working process, the low-pressure hole 13 is communicated with the outside to ensure that the sliding sleeve 5 forms a pressure difference on two sides of the upper part and the lower part, and plugging liquid can be injected to perform pressurizing after being put into place.
When a certain pressure is reached, the sliding sleeve 5 moves downwards, in the process, the clamping piece 29 is firstly extruded into the tool pipe 1 by the sliding sleeve 5, and the sliding sleeve 5 drives the rolling ball 17 to roll gradually through the rack 25 along with the downward movement of the sliding sleeve 5 until the central through hole 22 in the rolling ball 17 and the central hole of the rolling ball seat 14 are staggered so as to close a flow passage, thereby cutting off the connection between the upper part and the lower part of the rolling ball 17, ensuring the pressure of the lower part of the rolling ball 17 and preventing the backflow of plugging liquid from the plugging bag 4; when the central hole of the ball seat 14 is closed, the connecting block groove 35 on the sliding sleeve 5 moves downwards to the connecting block 34, and under the action of the spring 33, the connecting block 34 is clamped into the connecting block groove 35 to fix the sliding sleeve 5 and separate from the pipe column.
In the process of injecting the plugging liquid for pressurizing, the plugging liquid enters the plugging bag 4 from the liquid flow hole 11, the plugging bag 4 expands and deforms along with the continuous entering of the plugging liquid, the plugging bag 4 is extruded into a crack under the action of the pressure of the plugging liquid, and after the plugging liquid in the plugging bag 4 reaches a certain pressure, the lower moving sleeve 3 and the upper moving sleeve 2 are driven to move in opposite directions, so that the plugging bag 4 can be extruded into the crack more, and after the plugging liquid is solidified, the plugging tool can be drilled out, thereby completing the plugging of the crack.
The automatic adjusting type plugging tool is simple in structure and good in practicability, and through sliding of the lower movable sleeve 3 and the upper movable sleeve 2, the plugging bag 4 can extend into cracks more, so that plugging efficiency is improved; and can prevent the leakage blocking bag 4 from being broken due to the overlarge pressure and prevent the leakage blocking bag 4 from being separated from the leakage blocking tool due to the overlarge pressure. Solves the problems that the prior plugging bag can not deeply fill cracks, the pressure is too large to cause the phenomenon of the propping of the plugging bag and the separation of the plugging bag and a plugging tool, and is particularly suitable for plugging when encountering large cracks in the process of collecting natural gas or petroleum drilling.
Claims (5)
1. The utility model provides an automatically regulated formula plugging tool, it comprises instrument pipe (1), upper moving sleeve (2), lower moving sleeve (3), leaking stoppage bag (4), sliding sleeve (5) and connecting pipe (6), and guide shoe (7) are installed to the lower extreme screw thread of instrument pipe (1), and through keeping off cover (8) slidable mounting down moving sleeve (3) on instrument pipe (1) of guide shoe (7) top, its characterized in that: the upper end of the tool pipe (1) is slidably provided with an upper moving sleeve (2) through an upper baffle sleeve (10), and liquid flow holes (11) are uniformly distributed on the circumference of the tool pipe (1) between the lower moving sleeve (3) and the upper moving sleeve (2); the upper moving sleeve (2) and the lower moving sleeve (3) are clamped with a plugging bag (4) through a fixing cap (12), a rolling ball seat (14) is arranged in an upper end port of the tool pipe (1) through a connecting pipe (6), a rolling ball (17) is movably arranged in the rolling ball seat (14), a fixing ring (23) is arranged at the top of the rolling ball seat (14), a sliding sleeve (5) is sleeved on the connecting pipe (6), a sliding sleeve spring (24) is arranged between the sliding sleeve (5) and the tool pipe (1), and the sliding sleeve (5) is in contact connection with the rolling ball (17);
the rolling ball (17) is provided with a central through hole (22), and the outer surface of the rolling ball (17) at one side of the central through hole (22) is provided with rolling teeth (21);
a rack (25) is arranged on the inner wall of the sliding sleeve (5) corresponding to the connecting pipe through groove (16); the sliding sleeve (5) is meshed with the rolling ball (17) through the matching of the rack (25) and the rolling teeth (21);
a clamping groove (28) is formed in the sliding sleeve (5), a clamping piece (29) is arranged on the tool pipe (1) corresponding to the clamping groove (28), and the tool pipe (1) is movably clamped with the clamping piece (29) through the matching of the clamping groove (28) and the sliding sleeve (5);
the clamping piece (29) is composed of a mounting plate (30), an elastic sheet (31) and a clamping head (32), the clamping head (32) is mounted on the mounting plate (30) through the elastic sheet (31), the clamping head (32) is a T-shaped body, and the end head of the clamping head (32) is a slope;
a connecting block (34) is arranged on the tool pipe (1) above the clamping piece (29) through a spring (33), and a connecting block groove (35) is arranged on the sliding sleeve (5) above the clamping groove (28).
2. The self-adjusting lost circulation tool of claim 1, wherein: the circumference of the lower end of the connecting pipe (6) is provided with a supporting boss (15), and a connecting pipe through groove (16) is arranged on the connecting pipe (6) above the supporting boss (15).
3. The self-adjusting lost circulation tool of claim 1, wherein: the ball seat (14) is formed by mutually attaching two semicircular cylinders, a ball recess (18) is arranged in the ball seat (14), a ball seat sliding groove (19) is axially formed in the outer surface of the ball seat (14) on one side of the ball recess (18), and a communication hole (20) is formed in the ball seat sliding groove (19).
4. The self-adjusting lost circulation tool of claim 1, wherein: the upper end and the lower end of the tool pipe (1) are respectively provided with a variable diameter body, and the fixed cap (12) is respectively in threaded connection with the lower moving sleeve (3) and the upper moving sleeve (2).
5. The self-adjusting lost circulation tool of claim 1, wherein: the lower blocking sleeve (8) is in threaded connection with the tool pipe (1), and a lower centralizer (9) is arranged on the lower blocking sleeve (8) in a threaded manner; a movable sleeve spring (26) and a sealing element (27) are respectively arranged between the lower movable sleeve (3) and the upper movable sleeve (2) and the tool pipe (1); the fixing ring (23) is in threaded connection with the connecting pipe (6), and a low-pressure hole (13) is formed in the tool pipe (1) above the upper retaining sleeve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216587.XA CN107740682B (en) | 2017-11-28 | 2017-11-28 | Automatic regulation type plugging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216587.XA CN107740682B (en) | 2017-11-28 | 2017-11-28 | Automatic regulation type plugging tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107740682A CN107740682A (en) | 2018-02-27 |
| CN107740682B true CN107740682B (en) | 2024-03-22 |
Family
ID=61239627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711216587.XA Active CN107740682B (en) | 2017-11-28 | 2017-11-28 | Automatic regulation type plugging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107740682B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2648056Y (en) * | 2003-08-14 | 2004-10-13 | 四川石油管理局 | Bag type pluging leaking device |
| CN202914024U (en) * | 2012-11-12 | 2013-05-01 | 天津大港油田钻采技术开发公司 | Float collar |
| CN104191957A (en) * | 2014-09-15 | 2014-12-10 | 葛强林 | Leakage stopper for fuel tank |
| CN105239957A (en) * | 2015-10-28 | 2016-01-13 | 长江大学 | Expanded tube leaking stoppage device capable of being assembled and released |
| CN106948789A (en) * | 2017-04-18 | 2017-07-14 | 江苏大学 | A kind of environmentally friendly bag type paste underground intake transformation device and its method for blocking |
| CN207526465U (en) * | 2017-11-28 | 2018-06-22 | 长江大学 | A kind of automatic adjustable leak stoppage tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602005011399D1 (en) * | 2005-02-10 | 2009-01-15 | Schlumberger Technology Bv | Method and apparatus for consolidating a borehole |
| EP1757770A1 (en) * | 2005-08-25 | 2007-02-28 | Services Petroliers Schlumberger (Sps) | Method and apparatus to set a plug in a wellbore |
-
2017
- 2017-11-28 CN CN201711216587.XA patent/CN107740682B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2648056Y (en) * | 2003-08-14 | 2004-10-13 | 四川石油管理局 | Bag type pluging leaking device |
| CN202914024U (en) * | 2012-11-12 | 2013-05-01 | 天津大港油田钻采技术开发公司 | Float collar |
| CN104191957A (en) * | 2014-09-15 | 2014-12-10 | 葛强林 | Leakage stopper for fuel tank |
| CN105239957A (en) * | 2015-10-28 | 2016-01-13 | 长江大学 | Expanded tube leaking stoppage device capable of being assembled and released |
| CN106948789A (en) * | 2017-04-18 | 2017-07-14 | 江苏大学 | A kind of environmentally friendly bag type paste underground intake transformation device and its method for blocking |
| CN207526465U (en) * | 2017-11-28 | 2018-06-22 | 长江大学 | A kind of automatic adjustable leak stoppage tool |
Non-Patent Citations (2)
| Title |
|---|
| 新型膨大管柱堵漏工具的研究与试制;张良万 等;《探矿工程(岩土钻掘工程)》;第43卷(第7期);全文 * |
| 袋式堵漏工具研制与试验;王国君;《石油钻采工艺》(第3期);第36页，图1 * |
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| Publication number | Publication date |
|---|---|
| CN107740682A (en) | 2018-02-27 |
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