CN107795297A - Multistage a chain of Cut Block blocking - Google Patents
Multistage a chain of Cut Block blocking Download PDFInfo
- Publication number
- CN107795297A CN107795297A CN201610801034.XA CN201610801034A CN107795297A CN 107795297 A CN107795297 A CN 107795297A CN 201610801034 A CN201610801034 A CN 201610801034A CN 107795297 A CN107795297 A CN 107795297A
- Authority
- CN
- China
- Prior art keywords
- blocking
- hollow
- chain
- cut block
- connecting rod
- 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.)
- Pending
Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003129 oil well Substances 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002343 natural gas well Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000261422 Lysimachia clethroides Species 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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)
- Earth Drilling (AREA)
Abstract
The invention provides a kind of new " multistage a chain of Cut Block blocking " device, including：Top hollow base blocking, the hollow pressure transmission connecting rod in top；Middle part hollow base blocking, the hollow pressure transmission connecting rod in middle part；Bottom solid seat blocking；And one group of shear pin composition.The present invention is put on ground；Underground is fallen into oil pipe or sleeve pipe, reaches underground sliding sleeve position.High angle well section or net horizontal section when；Completion fluid or mud are pumped by ground, " multistage a chain of Cut Block blocking " is pushed into underground sliding sleeve position；Then, ground is suppressed, and opens underground sliding sleeve.Without steel wire operation；It is sent into without cable；Without continuous oil pipe operation；Without hydraulic control lines operation outside oil pipe, one time input " multistage a chain of Cut Block blocking " is continuously finished and is turned on and off multiple sliding sleeves, saves rig time.It can also substitute steel wire, cable can not reach, can not the High angle well section of operation, net horizontal section be continuously finished and be turned on and off multiple sliding sleeves, save cost.It is turned on and off after multiple sliding sleeves terminate, oil gas normally produces in oil pipe, saves cost；Depth of setting and oil gas well yield are unrestricted.
Description
Technical field
The present invention relates to oil gas well completion operation；Fracturing work and well cementation downhole tool technical field, more particularly, to one
The multistage a chain of Cut Block blocking device of kind.
Background technology
Over more than 100 years, completion (well completion) is in oil exploitation, and open hole well is bored up to after design well depth,
The technique for making shaft bottom and oil reservoir get up with certain fabric connectivity, it is that drilling well works last important step, is petroleum production engineering again
Beginning, with later recover the oil, water filling and the exploitation of whole oil gas field it is closely coupled.And the quality of oil well completion quality directly affects
To oily capacity of well and economic life, or even it is related to whole oil field and can be reasonably developed.
On modern wide variety of completion tubular column, for effective separate zone production, yield is improved, sliding sleeve to be also installed；It is former
The sliding sleeve come needs tripping in steel wire underground sliding bush switching instrument；Or cable underground sliding sleeve switching tools；Or coiled tubing underground is slided
Set switching tools are turned on and off.
Therefore, sliding sleeve correlation corollary equipment is able to extensive use, and underground sliding bush switching instrument is exactly switching sliding sleeve process
In one of wide variety of instrument.
Current underground sliding bush switching instrument both domestic and external mainly has two kinds of forms：
The first is by steel wire or cable, tripping in steel wire underground sliding bush switching instrument.The drawbacks of operation is to need steel
Silk winch and diesel powered unit, will there is ground steel wire preventer；Lubricator for slick line；Steel wire blowout prevention box；High-pressure hose, etc.
Ground installation；Also underground sliding bush switching instrument；Weighted lever；Mechanic jar or hydraulic shock device；Universal joint；Wire rope socket,
Add workload.
Second of continuous oil pipe operation；Tripping in coiled tubing underground hydraulic pressure sliding sleeve switch instrument.The drawbacks of operation is to need
Want coiled tubing；Diesel powered unit, there is ground gooseneck power unit；Coiled tubing preventer；Ground face-pumping；High pressure is soft
Pipe, etc. ground installation；Also underground sliding bush switching instrument；Hydraulic release grip instrument；Hydraulic shock device；Weighted lever；Hydraulic pressure accelerates
Device；Ball-and-seat；Coiled tubing joint；Add workload.Opening, in closing process, also wanting turn on pump direct circulation, coordinating continuous
Carry, push on oil pipe.
Simultaneously because the signal display that the hoisting power limitation of implement and sliding sleeve are opened requires that sliding sleeve opens and closes
Have difficulties sometimes.
The content of the invention
It is an object of the invention to provide a kind of multistage a chain of Cut Block blocking device, once put into, multistage can be opened
Sliding sleeve, and can guarantee that the production of hydrocarbons of pit shaft.
A kind of multistage a chain of Cut Block blocking device provided by the invention, including：Top hollow base blocking, hollow pressure transmission connect
Bar；Middle part hollow base blocking, hollow pressure transmission connecting rod；Lower seat blocking；And one group of shear pin composition.；
The hollow base blocking on top includes hollow base blocking and hollow pressure transmission connecting rod and pin hole, and described device is all by solvable
Material forms；
The hollow base blocking at middle part includes hollow base blocking and hollow pressure transmission connecting rod and pin hole, and described device is all by solvable
Metal material is made；
There is pin hole the upper end of lower seat blocking, and the hollow pressure transmission connecting rod of the hollow base blocking coordinates with shear pin to be connected
Connect；Described device is all made up of soluble metal material；
When tripping in oil well or the natural gas well of the present invention, whole sliding sleeves are in opening.The hollow base blocking on top is stuck in
The limiting section of first sliding sleeve neck bush, ground pressure, close the first sliding sleeve.
Continue to pressurize, shear the pin of the hollow pressure transmission connecting rod bottom of the hollow base blocking on top.Middle part it is hollow setting
Ball is descending, is stuck in the limiting section of the second sliding sleeve neck bush, ground pressure, closes the second sliding sleeve.
Continue to pressurize, shear the pin of the hollow pressure transmission connecting rod bottom of the hollow base blocking at middle part.Lower seat blocking continues
It is descending, the limiting section of the 3rd sliding sleeve neck bush is reached, ground pressure, closes the 3rd sliding sleeve.
Further, a chain of Cut Block blocking of the multistage is made of soluble metal.
Multistage a chain of Cut Block blocking is being passed through 2-10 days, is dissolved in well liquid, can farthest ensure the logical of pit shaft
Footpath, and be not in residual fragment, the clean and unobstructed of Oil/gas Well can be effectively ensured.
Compared with prior art, a kind of multistage a chain of Cut Block blocking device provided by the invention has advantages below：
1st, put into in well head, sliding sleeve fallen into oil pipe, in net horizontal section, aided in being sent into sliding sleeve by pumping completion fluid,
A time tripping in, operation one, which plows, to be continuously finished, and saves the time；
2nd, underground sliding bush switching instrument need not be changed, will not be to formation contaminant；
3rd, after closedown sliding sleeve terminates, exhaust pipe passage is kept in oil pipe, facilitates later workover treatment.
4th, without extra large number of ground equipment, cost is saved；
5th, depth of setting and oil gas well yield are unrestricted.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation before the present invention just lower going-into-well when (and in the sliding sleeve of tripping in first)；
Fig. 2 is to open the structural representation (stayed in after the first sliding sleeve in the first sliding sleeve) in the present invention；
Structural representation when Fig. 3 is the second sliding sleeve of tripping in of the present invention；
Fig. 4 is that the structural representation (stayed in after the second sliding sleeve in the second sliding sleeve) is opened in the present invention；
Fig. 5 is the structural representation that (stays in the 3rd sliding sleeve) after the sliding sleeve of tripping in the 3rd of the present invention；
Fig. 6 is the shear pin (staying in the first sliding sleeve) of the present invention, and after the sliding sleeve of hydraulic open first, shear pin is cut
Afterwards, pin feature schematic diagram in the first sliding sleeve is remained in
Fig. 7 is the shear pin (staying in the second sliding sleeve) of the present invention；And after the sliding sleeve of hydraulic open second, shear pin is cut
Afterwards, pin feature schematic diagram in the second sliding sleeve is remained in
Reference：
The hollow base blocking of 1- tops；Hollow base blocking in the middle part of 2-；
The solid seat blocking of 3- bottoms；4- tops shear pin；
5- bottoms shear pin；
The hollow pressure transmission connecting rod in 11- tops；21- lower hollow pressure transmission connecting rods
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Structural representation when Fig. 1 is multistage a chain of Cut Block blocking in the firm lower going-into-well of the present invention；Fig. 2 is more in the present invention
After level the first sliding sleeve of a chain of Cut Block blocking hydraulic open, the structural representation that (is stayed in after shear pin in the first sliding sleeve)；Fig. 3
For the structural representation in the present invention during multistage a chain of Cut Block blocking the second sliding sleeve of tripping in；Fig. 4 cuts for the multistage chain of rings of the present invention
After cutting the setting sliding sleeve of ball hydraulic open second, the structural representation that (is stayed in after shear pin in the second sliding sleeve)；Fig. 5 is the present invention
In the structural representation that (stays in the 3rd sliding sleeve) after the interior a chain of sliding sleeve of Cut Block blocking tripping in the 3rd of multistage.
As shown in figure 1, the invention provides a kind of new " multistage a chain of Cut Block blocking " device, including：Top is hollow
Setting ball, the hollow pressure transmission connecting rod in top；Middle part hollow base blocking, the hollow pressure transmission connecting rod in middle part；Bottom solid seat blocking；And one
Group shear pin composition.
Top hollow base blocking 1, the lower end of hollow pressure transmission connecting rod 11 are provided with lower contact 12, under hollow pressure transmission connecting rod 11
Portion's side wall offers Luo pits 13, and the Luo pits 13 are fitted close with shear pin 4；Luo pits 13 and middle part hollow base blocking
2nd, the upper end of the hollow pressure transmission connecting rod 21 in middle part is provided with top connection 22；The upper portion side wall of the hollow pressure transmission connecting rod 21 in middle part offers Luo
Pit 23, the Luo pits 13 are fitted close with shear pin 4, common to connect top hollow base blocking 1, hollow pressure transmission connecting rod 11
With middle part hollow base blocking 2, the hollow pressure transmission connecting rod 21 in middle part.
The top hollow base blocking 1, can closely it agree with underground the first sliding sleeve sliding sleeve；Ground pressure opens underground first
Sliding sleeve.
The middle part hollow base blocking 2, can closely it agree with underground the second sliding sleeve sliding sleeve；Ground pressure opens underground second
Sliding sleeve.
The bottom solid seat blocking 3, can closely agree with the sliding sleeve sliding sleeve of underground the 3rd；Ground pressure opens underground the 3rd
Sliding sleeve.
In the present embodiment, when tripping in oil well or the natural gas well of the present invention, top hollow base blocking 1 is stuck in the first sliding sleeve liner
In set, the circulation port of the first sliding sleeve is opened, when ensureing the initial tripping in oil well of the present invention or the natural gas well, the circulation port of the first sliding sleeve
In sealed condition.Continue to pressurize, after shearing disconnected top shear pin 4, middle part hollow base blocking and bottom solid seat blocking after
In the continuous sliding sleeve of tripping in second.Middle part hollow base blocking 2 is stuck in the second sliding sleeve neck bush, continues to pressurize, and opens the second sliding sleeve
Circulation port, when ensureing the initial tripping in oil well of the present invention or the natural gas well, the circulation port of the second sliding sleeve is in sealed condition.
Continue to pressurize, after shearing disconnected bottom shear pin 5, bottom solid seat blocking 3 continues in the sliding sleeve of tripping in the 3rd.
Compared with prior art, a kind of new opening underground sliding sleeve device provided by the invention has advantages below：
1st, ground is put into；It is continuously finished, saves the time；
2nd, without steel wire ground installation, without steel wire downhole tool；, will not be to formation contaminant without steel wire underground work；
3rd, without cable ground installation, without cable downhole tool；, will not be to formation contaminant without cable underground work；
4th, without coiled tubing ground installation, without coiled tubing downhole tool；, will not without coiled tubing underground work
To formation contaminant；
5th, the ground control cabinet without hydraulic control lines；Without hydraulic control lines operation outside oil pipe；
6th, after the end of job, full-bore is kept in oil pipe, later workover treatment is facilitated, saves cost；
7th, tripping in quantity, depth of setting can also continue to adjust, and increase series.
8th, a chain of Cut Block blocking of the multistage is made (except shear pin) using soluble metal.
9th, multistage a chain of Cut Block blocking 1,2,3 is being passed through 2-15 days, is dissolved in well liquid, can farthest ensure well
The full-bore of cylinder, latus rectum keep consistent with the latus rectum of outer tube, and are not in residual fragment, and the clean of Oil/gas Well can be effectively ensured
It is net and unobstructed.
The operation principle of the present invention is as follows：
In the present embodiment, multistage a chain of Cut Block blocking is put into from ground；Top hollow base blocking, the hollow pressure transmission in top connect
Bar blocks the neck bush of the first sliding sleeve；Ground pressure；The first sliding sleeve is opened downwards.Continue to pressurize (rise geostatic pressure) in ground；
Until shear pin 4 be sheared it is disconnected；Discharge the hollow ball seat 2 in middle part of Fig. 3 parts；The top hollow base blocking 1 of Fig. 2 parts, on
The Partial Shear pin 41 that the hollow pressure transmission connecting rod 11 in portion and shearing are broken is stayed in the screwed hole 13 of the hollow pressure transmission connecting rod 11 in top.
The hollow ball seat 2 in middle part and bottom solid seat blocking 3；Continue traveling downwardly；The hollow ball seat 2 in middle part blocks the interior of the second sliding sleeve
Bushing；Ground pressure；The second sliding sleeve is opened downwards.Continue to pressurize (rise geostatic pressure) in ground；Until shear pin 5 is sheared
It is disconnected；Discharge Fig. 5 bottom solid seat blocking 3；The middle part hollow base blocking 2 of Fig. 3 parts, the hollow pressure transmission connecting rod 21 in middle part and shearing
Disconnected Partial Shear pin 51 is stayed in the screwed hole 25 of the hollow pressure transmission connecting rod 21 in middle part.
Bottom solid seat blocking 3；Continue traveling downwardly；Block the neck bush of the 3rd sliding sleeve；Ground pressure；Second is opened downwards to slide
Set.
Reach and open the first sliding sleeve, the second sliding sleeve, the 3rd sliding sleeve, open three different oil reservoirs；Or three different gas
Layer or the production of water layer or the purpose of fracturing work；Behind 2-10 days that fracturing work terminates, all it is dissolved in well liquid, formation oil
Gas flows into sliding sleeve.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
- A kind of 1. multistage a chain of Cut Block blocking device, it is characterised in that including：Top hollow base blocking, middle part are hollow setting Ball, lower seat blocking；And one group of shear pin composition.The lower end of the hollow base blocking on top is provided with hollow pressure transmission connecting rod and pin hole, the lower end peace of the hollow base blocking at middle part Equipped with hollow pressure transmission connecting rod and pin hole, there is pin hole the upper end of lower seat blocking, and the hollow pressure transmission of the hollow base blocking connects Bar is connected with shear pin.The hollow base blocking on the top includes hollow base blocking and hollow pressure transmission connecting rod and pin hole, and described device is all by solvable Material forms；The hollow base blocking at the middle part includes hollow base blocking and hollow pressure transmission connecting rod and pin hole, and described device is all by solvable Metal material is made.
- 2. a chain of Cut Block blocking device of multistage according to claim 1, it is characterised in that the top it is hollow setting Ball is made of soluble metal.
- 3. a chain of Cut Block blocking device of multistage according to claim 1 or 2, it is characterised in that the solvable ball includes The structure of the hollow ball composition of multiple external diameters from big to small.
- 4. a chain of Cut Block blocking device of multistage according to claim 3, it is characterised in that the top it is hollow setting Ball external diameter；More than the hollow base blocking external diameter at the middle part；The hollow base blocking at the middle part is more than lower seat blocking external diameter.
- 5. a chain of Cut Block blocking device of multistage according to claim 4, it is characterised in that the hollow pressure transmission connecting rod with The screw thread that the shear pin is engaged.
- 6. a chain of Cut Block blocking device of multistage according to claim 5, it is characterised in that the lower seat blocking top Connecting rod is solid.
- 7. a chain of Cut Block blocking device of multistage according to claim 6, it is characterised in that the lower seat blocking top The screw thread that connecting rod is engaged with the shear pin.
- 8. a chain of Cut Block blocking device of multistage according to claim 1, it is characterised in that the hollow pressure transmission connecting rod is It is circular；There is interior step lower end；Process threaded pin hole.
- 9. a chain of Cut Block blocking device of multistage according to claim 1, it is characterised in that the lower end has in interior step Side is circumferentially provided with limited step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801034.XA CN107795297A (en) | 2016-09-02 | 2016-09-02 | Multistage a chain of Cut Block blocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801034.XA CN107795297A (en) | 2016-09-02 | 2016-09-02 | Multistage a chain of Cut Block blocking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107795297A true CN107795297A (en) | 2018-03-13 |
Family
ID=61529811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610801034.XA Pending CN107795297A (en) | 2016-09-02 | 2016-09-02 | Multistage a chain of Cut Block blocking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107795297A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017133A (en) * | 2019-05-23 | 2019-07-16 | 广州海洋地质调查局 | A kind of test of horizontal well production profile and shutoff method and device |
| CN110206531A (en) * | 2019-05-23 | 2019-09-06 | 广州海洋地质调查局 | A kind of oil pipe of horizontal well production profile test method and device |
| CN115704316A (en) * | 2021-08-12 | 2023-02-17 | 中国石油化工股份有限公司 | Throwing rod type pipe inspection device and application thereof |
-
2016
- 2016-09-02 CN CN201610801034.XA patent/CN107795297A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017133A (en) * | 2019-05-23 | 2019-07-16 | 广州海洋地质调查局 | A kind of test of horizontal well production profile and shutoff method and device |
| CN110206531A (en) * | 2019-05-23 | 2019-09-06 | 广州海洋地质调查局 | A kind of oil pipe of horizontal well production profile test method and device |
| CN110206531B (en) * | 2019-05-23 | 2024-04-09 | 广州海洋地质调查局 | Method and device for testing output profile of horizontal well oil pipe |
| CN110017133B (en) * | 2019-05-23 | 2024-05-10 | 广州海洋地质调查局 | Method and device for testing output profile of horizontal well and plugging water |
| CN115704316A (en) * | 2021-08-12 | 2023-02-17 | 中国石油化工股份有限公司 | Throwing rod type pipe inspection device and application thereof |
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Application publication date: 20180313 |