CN108952621B - Intercept pocket type plugging tool - Google Patents
Intercept pocket type plugging tool Download PDFInfo
- Publication number
- CN108952621B CN108952621B CN201710364048.4A CN201710364048A CN108952621B CN 108952621 B CN108952621 B CN 108952621B CN 201710364048 A CN201710364048 A CN 201710364048A CN 108952621 B CN108952621 B CN 108952621B
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- Prior art keywords
- protective sleeve
- ball seat
- shunt
- assembly
- hole
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- 230000001681 protective effect Effects 0.000 claims abstract description 81
- 239000002002 slurry Substances 0.000 claims abstract description 21
- 210000001503 joint Anatomy 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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 discloses an interception bag type plugging tool, which comprises: the protective sleeve component is of a tubular structure with an upper port and a lower port, and a protective sleeve diversion hole is arranged on the side wall of the protective sleeve component; the guide shoe is detachably plugged at the lower port of the protective sleeve component; the shunt assembly is of a tubular structure with an upper port and a lower port, the upper port of the shunt assembly is in butt joint with the upper port of the protective sleeve assembly, the lower port of the shunt assembly is in butt joint with the shunt hole of the protective sleeve, a shunt tube through hole communicated with a tube cavity of the protective sleeve assembly is arranged on the side wall of the shunt assembly, a plugging seat is arranged at the position of the shunt assembly, which is positioned at the downstream of the shunt tube through hole, and plugging substances falling from the plugging seat can plug slurry flowing to the lower port of the shunt assembly; the interception bag component is arranged in the lumen of the protective sleeve component and is communicated with the shunt tube through hole. By the aid of the interception bag type plugging tool, the problems of open cracks and karst cave type leakage plugging can be effectively solved.
Description
Technical Field
The invention relates to the technical field of drilling plugging tools for oil and gas wells, in particular to an interception bag type plugging tool.
Background
In the oil and gas well drilling development process, when the drilling well encounters a crack and a karst cave in a stratum, the drilling fluid is lost from the crack and the karst cave of the stratum, so that the normal operation of the drilling well is influenced, and particularly when the encountered crack and karst cave are large, the drilling fluid is completely lost from the crack and the karst cave, so that the drilling well cannot be normally performed, and the leaking stratum must be subjected to leaking stoppage operation at the moment. At present, plugging operation is usually carried out by pouring cement slurry or plugging material slurry into a well, and when a lost stratum is an open crack or a karst cave, the cement slurry can be influenced by unfavorable factors such as displacement, dilution and the like of stratum water or karst cave effusion, so that solidification cannot be effectively realized; the slurry of the plugging material cannot bridge because the maximum particle size of the plugging material is smaller than the width of the crack and the diameter of the karst cave, and the plugging material can be lost from the stratum crack and the karst cave. These factors all can lead to the difficulty in realizing the effective shutoff of stratum open cracks and karst cave, and the shutoff success rate is extremely low, has seriously influenced the engineering progress of well drilling, reduces the drilling construction quality, simultaneously consumes plugging materials in a large number, and the well drilling cost increases by a wide margin.
The patent document with the publication number of 201568016U discloses an interception type plugging tool for drilling and well drilling, which can improve the success rate of plugging open cracks and karst cave, and comprises: the inner cavity of the connector is in threaded connection with the upper part of the interception bag connector, and the lower part of the interception bag connector is sleeved with the top of the interception bag; the outer surface of the upper part of the inner tube is in threaded connection with the inner cavity of the interception bag connector, the middle lower part of the inner tube is arranged in the interception bag, the lower end of the inner tube is inserted into a base slot of a spherical crown-shaped guide head, and the side surface of the guide head abuts against the bottom side surface of the interception bag on the inner wall of the outer tube; the outer surface of the lower part of the connector is in threaded connection with the top of the outer tube; the vertical position of the bottom of the outer tube is lower than that of the bottom of the inner tube.
However, the tool still suffers from the following disadvantages: firstly, the lower end of the tool is of a sealing structure, a tubular column circulation channel cannot be provided in the well logging process of the tool, and especially, treatment measures are not easy to take under the condition of complex well conditions; secondly, the upper end of the interception bag of the tool is fixed with the joint of the interception bag through a rubber ring, release of the interception bag in the releasing process is not easy to control, cement paste cannot enter the interception bag continuously due to the fact that the bag opening is easy to fall off in advance, and therefore the interception bag cannot effectively exert an interception effect; and the lower position of the tool needs to be accurately controlled in the use process, the interception bag is not easy to release and fall off when the lower position is too deep, and the interception bag is easy to fall off in advance when the lower position is too shallow, so that the operation fails.
Therefore, the prior art can not effectively solve the problems of open cracks and karst cave type leakage plugging.
Disclosure of Invention
The invention provides an interception bag type plugging tool which can effectively solve the problems of open cracks and karst cave type leakage plugging.
The invention provides an interception bag type plugging tool, which comprises:
the protective sleeve component is of a tubular structure with an upper port and a lower port, and a protective sleeve diversion hole is arranged on the side wall of the protective sleeve component;
the guide shoe is detachably plugged at the lower port of the protective sleeve component, and can be separated from the protective sleeve component when the preset pressure is reached in the pipe of the protective sleeve component;
the shunt assembly is of a tubular structure with an upper port and a lower port, the upper port of the shunt assembly is in butt joint with the upper port of the protective sleeve assembly, the lower port of the shunt assembly is in butt joint with the shunt hole of the protective sleeve, a shunt tube through hole communicated with a tube cavity of the protective sleeve assembly is formed in the side wall of the shunt assembly, a plugging seat is arranged at the position, located at the downstream of the shunt tube through hole, of the shunt assembly, and plugging objects falling from the upstream of the plugging seat can plug slurry flowing to the lower port of the shunt assembly;
the interception bag component is arranged in the lumen of the protective sleeve component and is communicated with the shunt tube through hole, and comprises an interception bag and an elastic piece connected to the interception bag, and when the interception bag component is separated from the protective sleeve component, the elastic piece can prop open the interception bag.
Preferably, the shunt assembly comprises a shunt tube, the plugging seat is a ball seat, and an upper port of the shunt tube is connected with the inner side of an upper port of the protective sleeve assembly; the ball seat is of a disc-shaped structure, the outer wall of the ball seat is fixedly connected with the inner wall of the protective sleeve assembly, a ball seat blind hole extending along the axial direction is formed in the center of the upper portion of the ball seat, the upper port of the ball seat blind hole is in butt joint with the lower port of the shunt tube, a ball seat diversion hole is formed in the radial direction of the side wall of the ball seat, a ball seat through hole is formed in the periphery of the ball seat blind hole in the axial direction, and the ball seat diversion hole is communicated with the ball seat blind hole and the protective sleeve diversion hole; the ball seat diversion holes are not communicated with the ball seat through holes, and when a ball falls into the ball seat blind holes, the ball seat blind holes can be blocked.
Preferably, the protective sleeve assembly comprises an upper joint capable of being connected with the plugging tubular column and a protective sleeve butted with the upper joint.
Preferably, the upper part of the guide shoe is of a cylindrical structure, and the lower part of the guide shoe is of a conical structure.
Preferably, the interception bag is of a bag-shaped structure, the lower end of the interception bag is closed, the upper end of the interception bag is open, the elastic piece is a reducing spring of an annular zigzag structure, and the reducing spring is fixedly connected with the upper opening of the interception bag.
Preferably, the upper part of the ball seat blind hole is provided with a ball seat conical surface, and the cross section of the ball seat conical surface gradually reduces from top to bottom.
Preferably, a ball seat sealing ring is arranged between the ball seat and the protective sleeve component.
Preferably, a shoe sealing ring is arranged between the shoe and the protective sleeve component.
Preferably, the plurality of shunt tube through holes are uniformly distributed along the circumferential wall of the shunt assembly.
Preferably, the number of the protective sleeve diversion holes, the number of the ball seat diversion holes and the number of the ball seat through holes are all multiple, the protective sleeve diversion holes are uniformly distributed along the circumferential direction of the protective sleeve assembly, the ball seat diversion holes and the ball seat through holes are uniformly distributed by taking the axis of the ball seat as the center, and the ball seat diversion holes are in butt joint with the protective sleeve diversion holes in one-to-one correspondence.
The interception bag type plugging tool provided by the invention is characterized in that when in use, the upper end opening of the protective sleeve component is connected with the lower end of the plugging tubular column and is put into a well, and in the process of putting into the well, slurry in the plugging tubular column can form a circulating channel through the upper port of the protective sleeve component, the shunt component, the lower port of the shunt component and the shunt hole of the protective sleeve, so that circulating measures can be taken to cope with complex well conditions. After the plugging tool is lowered into the well above a leakage layer, plugging slurry is injected into a plugging tubular column after plugging materials are thrown into the plugging tubular column, when the plugging materials fall down to a plugging seat of a shunt assembly, the slurry is plugged, the circulating channel is closed, the plugging slurry can only flow into an inner cavity of a protective sleeve assembly through a shunt tube through hole, and then the connection between the protective sleeve assembly and a guide shoe is broken through pressure rising, so that an interception bag assembly is released from the protective sleeve assembly; when the interception bag component is released and falls into the well, the elastic piece can prop the interception bag open, so that the plugging slurry can be ensured to smoothly flow into the interception bag to be intercepted; the blocking bag can be moved to the position of the leakage layer under the action of the gravity of the leakage slurry after being opened, and the continuous inflow of the leakage slurry is not influenced in the moving process, so that the feeding position of the tool does not need to be precisely controlled, and the releasing operation can be implemented only by being positioned above the leakage layer.
In conclusion, the invention can complete the effective plugging of the open cracks and the karst cave; the circulating channel can be provided in the descending process of the well head, so that complex well conditions can be met; but also can simply and effectively control the release of the interception bag, and ensure that the plugging slurry reliably flows into the interception bag; the reliable plugging can be realized without accurately controlling the in-place, and the plugging operation difficulty is reduced; the invention can be widely applied to the plugging operation of various large-scale open cracks and karst cave type leakage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram showing the internal structure of an interception bag type plugging tool according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the operation of an interception bag type plugging tool according to an embodiment of the present invention;
fig. 3 is a schematic view of a shunt tube according to an embodiment of the present invention;
FIG. 4 is a schematic view of a diameter-reduced spring according to an embodiment of the present invention;
FIG. 5 is a schematic view of a tee structure according to an embodiment of the present invention;
wherein, 1-upper joint; 2-shunt tube; 3-ball seat; 4-protecting sleeve; 5-guiding shoes; 6-an interception bag; 7-reducing springs; 8-losing hand ball; 21-shunt tube through holes; 31-ball seat diversion hole; 32-ball seat through holes; 33-ball seat blind holes; 34-conical surface of the ball seat; 35-ball seat sealing rings; 51-shoe-guiding sealing ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides an interception bag type plugging tool, as shown in fig. 1, which mainly comprises: the upper joint 1, the shunt tube 2, the ball seat 3, the protective sleeve 4, the guide shoe 5, the interception bag 6 and the reducing spring 7.
As shown in fig. 1, the upper joint 1 and the protective sleeve 4 are both tubular structures, and are fixedly connected with each other, specifically, the upper joint and the protective sleeve can be connected in a threaded connection, interference sleeve connection and other manners. The upper side wall of the protective sleeve 4 is radially provided with protective sleeve diversion holes 41, and the number of the protective sleeve diversion holes 41 can be 3-6 and are uniformly distributed along the circumferential direction.
In this embodiment, the guide shoes 5 are connected with the lower end of the protective sleeve 4 through threads or shear pins, the guide shoes 5 mainly play roles in guiding and breaking down-hole barriers, the preferred structure is a cylindrical structure at the upper part, a conical or hemispherical structure at the lower part, and the upper part is connected with the lower end of the protective sleeve 4.
As shown in fig. 5, the ball seat 3 may be a disc-shaped structure, the outer wall of which is fixedly connected with the inner wall of the upper portion of the protective sleeve 4, the center of the upper portion of the ball seat is provided with a ball seat blind hole 33 extending along the axial direction, the side wall of the ball seat blind hole is radially provided with a ball seat diversion hole 31, and the periphery of the ball seat blind hole 33 is axially provided with a ball seat through hole 32. The ball seat diversion holes 31 and the ball seat through holes 32 can be uniformly distributed with the axis of the ball seat 3 as the center, and the number of the ball seat diversion holes is the same as that of the protective sleeve diversion holes 41.
It should be noted that the above description of the orientation is only for the convenience of understanding, and the axial direction refers to the vertical direction as shown in the drawings, and the radial direction refers to the lateral direction as shown in the drawings.
The upper end of the blind ball seat 33 is open and interfaces with the lower port of the shunt 2. Ball seat diversion hole 31 communicates ball seat blind hole 33 with protective sleeve diversion hole 41. The tee diversion hole 31 and the tee through hole 32 are not communicated with each other.
As shown in fig. 3, the shunt tube 2 has a tubular structure, the side wall of which is radially provided with a shunt tube through hole 21, the upper end of which is connected with the inner hole of the upper joint 1, and the lower end of which is connected with the upper end of a ball seat blind hole 33 on the ball seat 3. The number of the shunt tube through holes 21 is preferably 3 to 6, and is uniformly distributed in the circumferential direction.
As shown in fig. 1, the interception bag 6 in this embodiment is a bag-shaped structure, and is located between the ball seat 3 and the guide shoe 5 inside the protective sleeve 4, and has a closed lower end and an open upper end. As shown in fig. 1 and 4, the reducing spring 7 is in a ring-shaped zigzag structure, is positioned inside the protective sleeve 4 and is fixedly connected with the upper part of the interception bag 6. Of course, in other embodiments, instead of the above-mentioned reducing springs 7, other types of elastic members may be used, for example, elastic members similar to those of umbrella support frame structures, which can be gathered together when they are folded, and when they are sprung apart, the respective support columns are spread out around to support the interception bag 6.
In the preferred scheme of this embodiment, can be equipped with ball seat sealing washer 35 between ball seat 3 and protective sheath 4, so set up, can avoid the thick liquid back flow of protective sheath branch flow hole 41 department to be returned to the protective sheath inside by the gap between ball seat 3 and the protective sheath 4. In addition, a shoe sealing ring 51 can be arranged between the shoe 5 and the protective sleeve 4, so that the problem of leakage of slurry from a gap between the shoe 5 and the protective sleeve 4 is avoided.
Further, in this embodiment, the upper portion of the blind hole 33 is provided with a tapered surface 34, and the tapered surface 34 is gradually reduced from top to bottom. By this arrangement, when the release ball 8 falls down to the ball seat conical surface 34, a good sealing effect can be formed.
When the plugging tool provided by the embodiment is used, the upper joint 1 is connected to the lower end of the plugging tubular column and is put into a well; in the running-in process, as shown in fig. 1, the plugging tubular column can form a circulation channel through the inner hole of the upper joint 1, the inner hole of the shunt tube 2, the ball seat blind hole 33, the ball seat shunt hole 31 and the protective sleeve shunt hole 41, so that circulation measures can be adopted to cope with complex well conditions; after the invention is put down above a leakage layer in a well, after a hand ball 8 is put in a leakage stopping tubular column, the leakage stopping slurry starts to be injected, when the hand ball 8 falls down to a ball seat conical surface 34, as shown in figure 2, the opening of a ball seat blind hole 33 is sealed, a circulation channel is closed, the leakage stopping slurry can only flow into the inside of a protective sleeve 4 through the ball seat through hole 32, then the connection between the protective sleeve 4 and a guide shoe 5 is broken through pressure rise, and therefore, an interception bag 6 and a reducing spring 7 are released from the protective sleeve 4; because the lower opening of the interception bag 6 is closed, the upper opening is fixedly connected with the reducing spring 7, when the interception bag 6 is released and falls into a well, the reducing spring 7 can be opened and cling to the well wall to ensure that the upper opening of the interception bag 6 is always in an open state, so that the plugging slurry can be ensured to smoothly flow into the interception bag 6 to be intercepted; because the interception bag 6 can move to the position of the leakage layer under the action of the gravity of the leakage slurry after being released, the continuous inflow of the leakage slurry is not influenced in the moving process, the feeding position of the tool does not need to be precisely controlled, and the releasing operation can be implemented only by being positioned above the leakage layer.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An interception bag type plugging tool, comprising:
the protective sleeve component is of a tubular structure with an upper port and a lower port, and a protective sleeve diversion hole is arranged on the side wall of the protective sleeve component;
the guide shoe is detachably plugged at the lower port of the protective sleeve component, and can be separated from the protective sleeve component when the preset pressure is reached in the pipe of the protective sleeve component;
the shunt assembly is of a tubular structure with an upper port and a lower port, the upper port of the shunt assembly is in butt joint with the upper port of the protective sleeve assembly, the lower port of the shunt assembly is in butt joint with the shunt hole of the protective sleeve, a shunt tube through hole communicated with a tube cavity of the protective sleeve assembly is formed in the side wall of the shunt assembly, a plugging seat is arranged at the position, located at the downstream of the shunt tube through hole, of the shunt assembly, and plugging objects falling from the upstream of the plugging seat can plug slurry flowing to the lower port of the shunt assembly;
the interception bag component is arranged in the lumen of the protective sleeve component and is communicated with the shunt tube through hole, and comprises an interception bag and an elastic piece connected to the interception bag, and when the interception bag component is separated from the protective sleeve component, the elastic piece can prop open the interception bag.
2. The intercept bag-type plugging tool of claim 1 wherein said diverter assembly comprises a diverter tube, said plug seat being a ball seat, an upper port of said diverter tube being connected to an inside of an upper port of said protective sheath assembly; the ball seat is of a disc-shaped structure, the outer wall of the ball seat is fixedly connected with the inner wall of the protective sleeve assembly, a ball seat blind hole extending along the axial direction is formed in the center of the upper portion of the ball seat, the upper port of the ball seat blind hole is in butt joint with the lower port of the shunt tube, a ball seat diversion hole is formed in the radial direction of the side wall of the ball seat, a ball seat through hole is formed in the periphery of the ball seat blind hole in the axial direction, and the ball seat diversion hole is communicated with the ball seat blind hole and the protective sleeve diversion hole; the ball seat diversion holes are not communicated with the ball seat through holes, and when a ball falls into the ball seat blind holes, the ball seat blind holes can be blocked.
3. The intercept bag-type plugging tool of claim 1, wherein said protective sleeve assembly comprises an upper connector connectable to a plugging string and a protective sleeve interfacing with said upper connector.
4. The intercept pocket plugging tool of claim 1, wherein said shoe upper portion is of cylindrical configuration and said shoe lower portion is of conical configuration.
5. The intercepting bag type plugging tool according to claim 1, wherein the intercepting bag is of a bag-shaped structure, the lower end of the intercepting bag is closed, the upper end of the intercepting bag is open, the elastic piece is a reducing spring of an annular zigzag structure, and the reducing spring is fixedly connected with the upper opening of the intercepting bag.
6. The intercept pocket plugging tool of claim 2, wherein the upper portion of the blind bore of the ball seat is provided with a tapered surface of the ball seat, the tapered surface of the ball seat tapering in cross section from top to bottom.
7. The intercept pocket plugging tool of claim 2, wherein a ball seat seal is disposed between said ball seat and said protective sleeve assembly.
8. The intercept pocket plugging tool of claim 1, wherein a shoe seal is provided between said shoe and said protective sleeve assembly.
9. The intercept pocket plugging tool of claim 1, wherein said shunt tube through holes are a plurality and are evenly distributed along a circumferential wall of said shunt assembly.
10. The intercept pocket type plugging tool of claim 2, wherein the protective sleeve diversion holes, the ball seat diversion holes and the ball seat through holes are all plural, and the protective sleeve diversion holes are uniformly distributed along the circumferential direction of the protective sleeve assembly, the ball seat diversion holes and the ball seat through holes are uniformly distributed with the axis of the ball seat as the center, and the ball seat diversion holes are in one-to-one butt joint with the protective sleeve diversion holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364048.4A CN108952621B (en) | 2017-05-22 | 2017-05-22 | Intercept pocket type plugging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364048.4A CN108952621B (en) | 2017-05-22 | 2017-05-22 | Intercept pocket type plugging tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108952621A CN108952621A (en) | 2018-12-07 |
| CN108952621B true CN108952621B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710364048.4A Active CN108952621B (en) | 2017-05-22 | 2017-05-22 | Intercept pocket type plugging tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN108952621B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855067B (en) * | 2019-11-28 | 2022-11-25 | 中国石油化工股份有限公司 | Mechanical expansion type leakage stopping tool and leakage stopping method thereof |
| CN113622859B (en) * | 2020-05-09 | 2024-07-26 | 中国石油天然气集团有限公司 | Plugging tool |
| CN116677343B (en) * | 2023-07-12 | 2023-10-20 | 扬州市油田金达实业有限公司 | Cementing plugging device and plugging method for large karst cave lost circulation |
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| CN2732989Y (en) * | 2004-09-16 | 2005-10-12 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Down-hole by-pass valve type lost circulation material running tool used in oil field |
| WO2006084597A1 (en) * | 2005-02-10 | 2006-08-17 | Services Petroliers Schlumberger | A method and apparatus for consolidating a wellbore |
| CN201568016U (en) * | 2009-12-15 | 2010-09-01 | 中国地质科学院探矿工艺研究所 | Interception type plugging tool for drilling and well drilling |
| CN201705283U (en) * | 2010-06-30 | 2011-01-12 | 中国地质大学（武汉） | Leaking stoppage device for drilling fixed points |
| CN105239957A (en) * | 2015-10-28 | 2016-01-13 | 长江大学 | Expanded tube leaking stoppage device capable of being assembled and released |
| CN206903632U (en) * | 2017-05-22 | 2018-01-19 | 中石化石油工程技术服务有限公司 | One kind intercepts bag type pluging leaking device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201108724D0 (en) * | 2011-05-24 | 2011-07-06 | Coretrax Technology Ltd | Support device for use in a wellbore and a method for displaying a barrier in a wellbore |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2732989Y (en) * | 2004-09-16 | 2005-10-12 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Down-hole by-pass valve type lost circulation material running tool used in oil field |
| WO2006084597A1 (en) * | 2005-02-10 | 2006-08-17 | Services Petroliers Schlumberger | A method and apparatus for consolidating a wellbore |
| CN201568016U (en) * | 2009-12-15 | 2010-09-01 | 中国地质科学院探矿工艺研究所 | Interception type plugging tool for drilling and well drilling |
| CN201705283U (en) * | 2010-06-30 | 2011-01-12 | 中国地质大学（武汉） | Leaking stoppage device for drilling fixed points |
| CN105239957A (en) * | 2015-10-28 | 2016-01-13 | 长江大学 | Expanded tube leaking stoppage device capable of being assembled and released |
| CN206903632U (en) * | 2017-05-22 | 2018-01-19 | 中石化石油工程技术服务有限公司 | One kind intercepts bag type pluging leaking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108952621A (en) | 2018-12-07 |
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