CN108952621A - A kind of interception bag type pluging leaking device - Google Patents
A kind of interception bag type pluging leaking device Download PDFInfo
- Publication number
- CN108952621A CN108952621A CN201710364048.4A CN201710364048A CN108952621A CN 108952621 A CN108952621 A CN 108952621A CN 201710364048 A CN201710364048 A CN 201710364048A CN 108952621 A CN108952621 A CN 108952621A
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- China
- Prior art keywords
- ball seat
- protective case
- hole
- bag
- case component
- Prior art date
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Links
- 230000001681 protective effect Effects 0.000 claims abstract description 74
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 235000019994 cava Nutrition 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 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
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection 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
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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 a kind of interception bag type pluging leaking devices, comprising: protective case component, for the tubular structure with upper port and lower port, and its side wall is equipped with protective case tap hole；Guide shoe is separably plugged in the lower port of protective case component；Shunt assembly; for the tubular structure with upper port and lower port; the upper port of shunt assembly is docked with the upper port of protective case component; the lower port of shunt assembly is docked with protective case tap hole; and the side wall of shunt assembly is equipped with the shunting pipe through-hole being connected with the lumen of protective case component; shunt assembly is located at the position for shunting pipe through-hole downstream equipped with seat is blocked, and the slurries for flowing to the lower port of shunt assembly can be blocked by the plug fallen on closure seat；Bag assembly is intercepted, be arranged in the lumen of protective case component and is communicated with pipe through-hole is shunted.So set, interception bag type pluging leaking device provided by the invention, can effectively solve the problem that open crack and Caves leakage leak stopping there are the problem of.
Description
Technical field
The present invention relates to oil gas well drilling leak stoppage tool technical field, in particular to a kind of interception bag type pluging leaking device.
Background technique
In oil gas well drilling development process, when drilling well encounters the stratum crack Zhong You, solution cavity, drilling fluid will be from stratum
It is lost in crack, solution cavity, so that being normally carried out for drillng operation is influenced, especially when met crack, solution cavity are larger, drilling fluid
It will be lost from crack, solution cavity completely, be normally carried out drilling can not, plugging operations must be carried out to leakage stratum at this time.Mesh
Before, plugging operations generally use the modes such as grout injection or plugging material slurries into well and carry out, when leakage stratum is to open
Property crack, solution cavity when, cement slurry may be subjected to water flooding or solution cavity hydrops displacement, dilution etc. unfavorable factors influence, cannot
It is effective to realize solidification；Because to be less than fracture width, solution cavity straight for the largest particles partial size of wherein plugging material in plugging material slurries
Diameter, to can not build bridge, plugging material will be lost from formation fracture, solution cavity.These factors, which will lead to, to be difficult to realize pair
Effective closure in stratum opening crack, solution cavity, leak stopping success rate is extremely low, has severely impacted the project progress of drilling well, reduces
Drilling operation quality, while plugging material is largely consumed, drilling cost increases considerably.
A kind of drilling and well drilling intercept type leak stoppage tool are disclosed in the patent document of Publication No. 201568016U, it can
The success rate in open crack, solution cavity leak stopping is improved, which includes: the connector that drilling rod lower end outer peripheral surface is threadedly coupled,
The inner cavity of connector is threadedly coupled with the top for intercepting bag connector, and the lower part housing for intercepting bag connector intercepts the top of bag；Inner tube
Outer surface of upper connect with the thread in inner cavity for intercepting bag connector, the middle and lower part of inner tube is placed in interception bag, and the lower end of inner tube
It is inserted in the base portion slot of the guide head of spherical crown shape, the bottom sides for intercepting bag are pushed against the inner wall of outer tube by the side of guide head
On；The outer surface of connector lower part and the screw top of outer tube connect；It hangs down lower than bottom of inner tube the vertical position of outer pipe bottom
To position.
But there are still following deficiencies for the tool: be first its lower end be sealing structure, cannot during tool enters well
It is unfavorable for taking treatment measures in the case that tubing string circulation canal, especially hole condition complexity are provided；The followed by interception of the tool
It is fixed between bag upper end and interception bag connector by rubber ring, interception bag is given up, and process release is not easy to control, and sack easily takes off in advance
Falling causes cement slurry that can not go successively to intercept bag, causes interception bag that can not effectively play interception function；It is that the tool exists again
It needs accurately to control tripping in position in use process, bag is intercepted when tripping in is too deep and is not easy release abjection, bag is intercepted when tripping in is excessively shallow and is held
Easily falling off in advance causes operation to fail.
So currently available technology not can effectively solve open crack and Caves leakage leak stopping there are the problem of.
Summary of the invention
A kind of interception bag type pluging leaking device provided by the invention can effectively solve the problem that open crack and Caves leakage
Leak stopping there are the problem of.
A kind of interception bag type pluging leaking device provided by the invention, comprising:
Protective case component, for the tubular structure with upper port and lower port, and its side wall is equipped with protective case tap hole；
Guide shoe is separably plugged in the lower port of the protective case component, reaches when in the pipe of the protective case component
When preset pressure, the guide shoe and the protective case component can be separated；
Shunt assembly, for the tubular structure with upper port and lower port, the upper port of the shunt assembly and the guarantor
The upper port of jacket assembly is docked, and the lower port of the shunt assembly is docked with the protective case tap hole, and the shunt group
The side wall of part is equipped with the shunting pipe through-hole being connected with the lumen of the protective case component, and the shunt assembly is located at the shunting
The position in pipe through-hole downstream, which is equipped with, blocks seat, can be blocked by the plug that the closure seat upstream is fallen and flow to the shunt group
The slurries of the lower port of part；
Bag assembly is intercepted, is arranged in the lumen of the protective case component and is communicated with the shunting pipe through-hole, it is described to block
Cutting bag assembly includes intercepting bag and being connected to the elastic component intercepted on bag, when the interception bag assembly is taken off by the protective case component
From when, the elastic component can strut the interception bag.
Preferably, the shunt assembly includes isocon, and the closure seat is ball seat, the upper port of the isocon and institute
It states and is connected on the inside of the upper port of protective case component；The ball seat is disc-shaped structure, the outer wall of the ball seat and the protection
The inner wall of set component is fixedly linked, and the central upper portion of the ball seat is equipped with the ball seat blind hole axially extended, the ball seat blind hole
Upper port and the lower port of the isocon be connected to each other, the side wall of the ball seat is radially provided with ball seat tap hole, the ball seat
Ball seat through-hole is axially provided with around blind hole, the ball seat tap hole is connected to the ball seat blind hole and the protective case tap hole；
It is not connected to mutually between the ball seat tap hole and the ball seat through-hole, when sphere falls into the ball seat blind hole, can block described
Ball seat blind hole.
Preferably, the protective case component include the top connection that can be connect with leak stoppage limb and with the top connection to right
The protective case connect.
Preferably, the guide shoe top is cylindrical-shaped structure, lower part is cone-shaped structure.
Preferably, the interception bag be bag shaped structure, and it is described intercept bag lower end closed, upper end opening, the elasticity
Part is the undergauge spring of annular curved structure, and the undergauge spring is fixedly connected with the upper opening for intercepting bag.
Preferably, the top of the ball seat blind hole is equipped with the ball seat conical surface, and the cross section of the ball seat conical surface is along from top to bottom
Direction is tapered.
Preferably, ball seat sealing ring is equipped between the ball seat and the protective case component.
Preferably, guide shoe sealing ring is equipped between the guide shoe and the protective case component.
Preferably, the shunting pipe through-hole is multiple, and is uniformly distributed along the circumferential wall of the shunt assembly.
Preferably, the protective case tap hole, the ball seat tap hole and ball seat through-hole are multiple, and the protective case
Tap hole is uniformly distributed along the circumferencial direction of the protective case component, and the ball seat tap hole and ball seat through-hole are with the axis of ball seat
It is uniformly distributed centered on line, and the ball seat tap hole is connected to each other correspondingly with the protective case tap hole.
Interception bag type pluging leaking device provided by the invention, when in use by the upper end opening and leak stoppage limb of protective case component
Lower end connection and G.I.H, during tripping in, slurries in leak stoppage limb can by the upper port of protective case component, point
It flows component, the lower port of shunt assembly and protective case tap hole and forms circulation canal, circulation measure reply thus can be taken multiple
Miscellaneous hole condition.After this leak stoppage tool is transferred in well to drop ply, is launched into leak stoppage limb and start to inject after losing plug
Leak stopping slurry, when at the closure seat that plug downlink drops down onto shunt assembly, slurries are blocked, and above-mentioned circulation canal is closed, and are blocked up
Spillage can only by shunt pipe through-hole flow into protective case component inner cavity in, then by increase pressure destroy protective case component with
Thus connection between guide shoe will intercept bag assembly and release from protective case component；When interception bag assembly discharges and falls into
After in well, elastic component can will intercept bag and strut, it can be ensured that leak stopping slurry is smoothly flowed into intercept in bag and is intercepted；Due to intercepting bag support
It can be moved at drop ply in the case where gravity is starched in leak stopping after opening, not influence leak stopping slurry in moving process and continue to flow into, therefore tool
Position is sent into without accurate control, as long as being located above drop ply i.e. implementable release operation.
In conclusion the achievable effective leak stopping to open crack, solution cavity of the present invention；It can be mentioned during its tripping in
For circulation canal, complex hole condition is coped with；Simple and effective it can control the release for intercepting bag again, it is ensured that leak stopping slurry is reliable to flow into interception bag
It is internal；Also reliable leak stopping can be realized without accurate control tripping in position, reduce plugging operations difficulty；The present invention can fit extensively
For all kinds of large-scale open cracks, the plugging operations of Caves leakage.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is interception bag type pluging leaking device internal structure chart provided in an embodiment of the present invention；
Fig. 2 is interception bag type pluging leaking device working principle diagram provided in an embodiment of the present invention；
Fig. 3 is isocon structural schematic diagram provided in an embodiment of the present invention；
Fig. 4 is undergauge spring structure schematic diagram provided in an embodiment of the present invention；
Fig. 5 is ball socket structure schematic diagram provided in an embodiment of the present invention；
Wherein, 1- top connection；2- isocon；3- ball seat；4- protective case；5- guide shoe；6- intercepts bag；7- undergauge spring；8-
It gives up ball；21- shunts pipe through-hole；31,32- ball seat through-hole；33- ball seat blind hole；The 34- ball seat conical surface；35- ball seat sealing ring；51-
Guide shoe sealing ring.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of interception bag type pluging leaking device provided in an embodiment of the present invention, as shown in Figure 1, specifically including that top connection 1, dividing
Flow tube 2, protective case 4, guide shoe 5, intercepts bag 6 and undergauge spring 7 at ball seat 3.
As shown in Figure 1, top connection 1 and protective case 4 are tubular structure, it is fixedly linked, can specifically passes through between the two
The modes such as threaded connection, interference socket are attached.The upper portion side wall of protective case 4 is radially provided with protective case tap hole 41, protection
The quantity for covering tap hole 41 can be 3~6, and be uniformly distributed circumferentially.
In the present embodiment, it is connected between guide shoe 5 and the lower port of protective case 4 by screw thread or shear pin, guide shoe 5 is main
Play the role of being oriented to and abolishing underground obstacle, preferred structure is that top is cylindrical-shaped structure, and lower part is coniform or hemisphere
Shape structure, upper part are connected with 4 lower end of protective case.
As shown in figure 5, ball seat 3 can be disc-shaped structure, outer wall is fixedly linked with 4 upper inside wall of protective case, thereon
Portion center is provided with the ball seat blind hole 33 axially extended, and side wall is radially provided with ball seat tap hole 31,33 peripheral shaft of ball seat blind hole
To being provided with ball seat through-hole 32.Above-mentioned, ball seat tap hole 31 and ball seat through-hole 32 can uniformly be divided centered on the axis of ball seat 3
Cloth, and it is identical as 41 quantity of protective case tap hole.
It should be noted that above-mentioned orientation description is only to facilitate understand that scheme, above-mentioned axial direction refer to as shown in the figure
Vertical direction, it is radial for as illustrated in the drawing laterally.
The upper end opening of ball seat blind hole 33, and docked with the lower port of isocon 2.It is blind that ball seat tap hole 31 is connected to ball seat
Hole 33 and protective case tap hole 41.It is not connected to mutually between ball seat tap hole 31 and ball seat through-hole 32.
As shown in figure 3, isocon 2 is tubular structure, side wall, which is radially provided with, shunts pipe through-hole 21, the upper end and top connection
1 inner hole is connected, and lower end is connected with 33 upper end of ball seat blind hole on ball seat 3.The quantity of above-mentioned shunting pipe through-hole 21 is preferably 3~
6, and be uniformly distributed circumferentially.
As shown in Figure 1, interception bag 6 in the present embodiment is bag shaped structure, be located at 4 inside ball seat 3 of protective case and guide shoe 5 it
Between, lower end closed, upper end opening.As shown in Fig. 1,4, undergauge spring 7 is annular curved structure, is located at 4 inside of protective case simultaneously
It is fixedly linked with 6 top of bag is intercepted.Certainly, in other embodiments, above-mentioned contracting can also be replaced by other types of elastic component
Diameter spring 7, for example, be similar to the elastic component of umbrella support framework structure, when gathering can gather its together, when it is flicked,
Each support column is unfolded around, will intercept bag 6 and support.
In the preferred embodiment of the present embodiment, it can be equipped with ball seat sealing ring 35 between ball seat 3 and protective case 4, so set
It sets, can be avoided the slurries at protective case tap hole 41 and backflow and backflowed by the gap between ball seat 3 and protective case 4 to protective case
Portion.In addition, guide shoe sealing ring 51 can be equipped between guide shoe 5 and protective case 4, avoid slurries between guide shoe 5 and protective case 4
Gap the problem of leaking.
Further, in this embodiment 33 top of ball seat blind hole is equipped with the ball seat conical surface 34, the ball seat conical surface 34 is along from top to bottom
Direction is gradually reduced.So set, being capable of forming preferable sealing effect when 8 downlink of ball of giving up drops down at the ball seat conical surface 34.
When using leak stoppage tool provided in this embodiment, top connection 1 is connected to leak stoppage limb lower end and G.I.H；Under
During entering, as shown in Figure 1, leak stoppage limb can be shunted by 1 inner hole of top connection, 2 inner hole of isocon, ball seat blind hole 33, ball seat
Hole 31, protective case tap hole 41 form circulation canal, and circulation measure thus can be taken to cope with complex hole condition；By the present invention in well
After above decentralization to drop ply, start to inject leak stopping slurry after ball 8 of giving up is launched into leak stoppage limb, when giving up, 8 downlink of ball drops down onto ball
When at the seat conical surface 34, as shown in Fig. 2, the opening of ball seat blind hole 33 is enclosed, circulation canal is closed, and leak stopping slurry can only be logical by ball seat
Hole 32 flows into inside protective case 4, thus the connection then destroyed between protective case 4 and guide shoe 5 by increasing pressure will intercept bag
6 release from protective case 4 together with undergauge spring 7；Due to intercepting the lower mouth closing of bag 6, suitable for reading and 7 stationary phase of undergauge spring
Even, discharge and after fall into well when intercepting bag 6,7 expansible of undergauge spring and be close to the borehole wall make to intercept bag 6 it is suitable for reading always in
Open state, it can be ensured that 6 is intercepted in the smooth inflow interception bag of leak stopping slurry；Due to intercepting gravity work can be starched in leak stopping after bag 6 discharges
It is moved at drop ply under, does not influence leak stopping slurry in moving process and continue to flow into, therefore tool is sent into position and is controlled without accurate,
As long as being located above drop ply i.e. implementable release operation.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of interception bag type pluging leaking device characterized by comprising
Protective case component, for the tubular structure with upper port and lower port, and its side wall is equipped with protective case tap hole；
Guide shoe is separably plugged in the lower port of the protective case component, when reaching default in the pipe of the protective case component
When pressure, the guide shoe and the protective case component can be separated；
Shunt assembly, for the tubular structure with upper port and lower port, the upper port of the shunt assembly and the protective case
The upper port of component is docked, and the lower port of the shunt assembly is docked with the protective case tap hole, and the shunt assembly
Side wall is equipped with the shunting pipe through-hole being connected with the lumen of the protective case component, and it is logical that the shunt assembly is located at the isocon
The position in hole downstream, which is equipped with, blocks seat, can be blocked by the plug that the closure seat upstream is fallen and flow to the shunt assembly
The slurries of lower port；
Bag assembly is intercepted, is arranged in the lumen of the protective case component and is communicated with the shunting pipe through-hole, the interception bag
Component includes intercepting bag and being connected to the elastic component intercepted on bag, when the interception bag assembly is detached from by the protective case component
When, the elastic component can strut the interception bag.
2. intercepting bag type pluging leaking device as described in claim 1, which is characterized in that the shunt assembly includes isocon, institute
Stating and blocking seat is ball seat, is connected on the inside of the upper port of the isocon and the upper port of the protective case component；The ball seat
For disc-shaped structure, the outer wall of the ball seat and the inner wall of the protective case component are fixedly linked, the central upper portion of the ball seat
Equipped with the ball seat blind hole axially extended, the upper port of the ball seat blind hole and the lower port of the isocon are connected to each other, described
The side wall of ball seat is radially provided with ball seat tap hole, and ball seat through-hole is axially provided with around the ball seat blind hole, and the ball seat shunts
Hole is connected to the ball seat blind hole and the protective case tap hole；Do not connect mutually between the ball seat tap hole and the ball seat through-hole
It is logical, when sphere falls into the ball seat blind hole, the ball seat blind hole can be blocked.
3. intercepting bag type pluging leaking device as described in claim 1, which is characterized in that the protective case component include can with it is stifled
The top connection of fistulae column connection and with the top connection to the protective case docked.
4. as described in claim 1 intercept bag type pluging leaking device, which is characterized in that the guide shoe top be cylindrical-shaped structure,
Lower part is cone-shaped structure.
5. intercepting bag type pluging leaking device as described in claim 1, which is characterized in that the interceptions bag is bag shaped structure, and institute
State lower end closed, the upper end opening for intercepting bag, the elastic component is the undergauge spring of annular curved structure, the undergauge spring with
The upper opening for intercepting bag is fixedly connected.
6. intercept type leak stoppage tool as claimed in claim 2, which is characterized in that bored equipped with ball seat on the top of the ball seat blind hole
Face, the cross section of the ball seat conical surface is along tapered in top-down direction.
7. intercept type leak stoppage tool as claimed in claim 2, which is characterized in that between the ball seat and the protective case component
Equipped with ball seat sealing ring.
8. intercept type leak stoppage tool as described in claim 1, which is characterized in that between the guide shoe and the protective case component
Equipped with guide shoe sealing ring.
9. intercept type leak stoppage tool as described in claim 1, which is characterized in that the shunting pipe through-hole is multiple, and along institute
The circumferential wall for stating shunt assembly is uniformly distributed.
10. intercept type leak stoppage tool as claimed in claim 2, which is characterized in that the protective case tap hole, the ball seat point
Discharge orifice and ball seat through-hole are multiple, and the protective case tap hole is uniformly distributed along the circumferencial direction of the protective case component,
The ball seat tap hole and ball seat through-hole are uniformly distributed centered on the axis of ball seat, and the ball seat tap hole and the guarantor
Sheath tap hole is connected to each other correspondingly.
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 true CN108952621A (en) | 2018-12-07 |
| CN108952621B CN108952621B (en) | 2023-09-29 |
Family
ID=64462392
Family Applications (1)
| 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 |
|---|---|
| CN (1) | CN108952621B (en) |
Cited By (3)
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| CN112855067A (en) * | 2019-11-28 | 2021-05-28 | 中国石油化工股份有限公司 | Mechanical expansion type leakage stopping tool and leakage stopping method thereof |
| CN113622859A (en) * | 2020-05-09 | 2021-11-09 | 中国石油天然气集团有限公司 | Leakage stopping tool |
| CN116677343A (en) * | 2023-07-12 | 2023-09-01 | 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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|---|---|---|---|---|
| CN112855067A (en) * | 2019-11-28 | 2021-05-28 | 中国石油化工股份有限公司 | Mechanical expansion type leakage stopping tool and leakage stopping method thereof |
| 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 |
| CN113622859A (en) * | 2020-05-09 | 2021-11-09 | 中国石油天然气集团有限公司 | Leakage stopping tool |
| CN116677343A (en) * | 2023-07-12 | 2023-09-01 | 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 |
| 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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| CN108952621B (en) | 2023-09-29 |
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