CN110118076A - A kind of righting type damping device for filling - Google Patents
A kind of righting type damping device for filling Download PDFInfo
- Publication number
- CN110118076A CN110118076A CN201910549892.3A CN201910549892A CN110118076A CN 110118076 A CN110118076 A CN 110118076A CN 201910549892 A CN201910549892 A CN 201910549892A CN 110118076 A CN110118076 A CN 110118076A
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- China
- Prior art keywords
- central tube
- ring
- filling
- spring
- outer circle
- Prior art date
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- Granted
Links
- 238000013016 damping Methods 0.000 title claims description 27
- 239000010985 leather Substances 0.000 claims description 16
- 238000005728 strengthening Methods 0.000 claims description 15
- 238000004073 vulcanization Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 238000012856 packing Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003466 welding 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a kind of righting types to damp device for filling, including central tube (18)；The upper and lower ends of central tube (18) are separately installed with top connection (1) and lower contact (19)；The outer circle of central tube (18) is sequentially installed with centering ring (2), upper positioning ring (5), upper sliding sleeve (7), upper spring (9), lower slider set (11), lower spring (13), lower positioning ring (14) and lower centering ring (16) in the position between top connection (1) and lower contact (19) from top to bottom.Righting type disclosed by the invention damps device for filling, and scientific structure design is reasonable, can effectively change load fluid flow regime, extend the flow distance of liquid, extends gravel pack service length, can be not only used for extended reach well, it can also be used in horizontal well, be of great practical significance.
Description
Technical field
The present invention relates to oil-gas field development technical fields, damp device for filling more particularly to a kind of righting type.
Background technique
Currently, carrying out horizontal well or the filling of High angle gravel for extended reach well and horizontal well in oil-gas field development
In Completion Operations, since horizontal segment is too long, the flow distance of load fluid is limited, can not carry out long range packing job.In this regard,
The existing effective ways for realizing horizontal well long well section gravel pack service are as follows: by damping device for filling, to change load fluid
Flow regime extends the flow distance of load fluid.
But for existing damping device for filling, there are body resistance-strengthening tablets to design for integral type, and structure is complicated, is also easy to produce
The problem of vortex, processing difficulties；Meanwhile existing device lacks positioning device, activity is excessive in the work progress of tool,
It is unstable；Existing apparatus uses the design pattern of single-skin drum bowl Single spring, and damping is bad, and spring reset ability is poor；The above feelings
Condition all affects the effect of field application of tool, it is difficult to realize effective filling of long well section.
For example, the patent of invention " SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL tubing string and its pressure-control valve " of authorization on June 15th, 2016, is awarded
Notification number: CN103362483B is weighed, mainly by groups such as top connection, base tube, pre-load nut, spring, leather cup, centralizer, lower contacts
At.The device is primarily present deficiency: 1, body resistance-strengthening tablets design for integral type, and structure is complicated, and flow channels are small, are also easy to produce vortex, add
The problem of work difficulty；2, existing device lacks positioning device, and activity is excessive in the work progress of tool, unstable；3,
Existing apparatus uses the design pattern of single-skin drum bowl Single spring, and damping is bad, and spring reset ability is poor；4, centralizer is single
Design, righting effect are poor.
Summary of the invention
The purpose of the present invention is being directed to technological deficiency of the existing technology, a kind of righting type damping device for filling is provided.
For this purpose, the present invention provides a kind of righting types to damp device for filling, which is characterized in that including central tube；
The upper and lower ends of central tube, are separately installed with top connection and lower contact；
The outer circle of central tube is sequentially installed with righting in the position between top connection and lower contact from top to bottom
Ring, upper positioning ring, upper sliding sleeve, upper spring, lower slider set, lower spring, lower positioning ring and lower centering ring；
Wherein, the lower end surface of upper sliding sleeve is held out against in the upper surface of upper spring；
Upper spring lower end surface is held out against in the upper surface of lower slider set；
The lower end surface of lower slider set is held out against in the upper surface of lower spring；
The lower end surface of lower spring is held out against in the upper surface of lower positioning ring.
Wherein, the upper end of top connection is connect with the tubing round thread in extended reach well or horizontal well；
It is to be threadedly coupled between top connection lower end and the outer circle upper end of central tube；
It is to be threadedly coupled between the upper end of lower contact and the outer circle lower end of central tube.
Wherein, for upper righting ring set in central tube upper end, the two is clearance fit；
Upper sliding sleeve covers on central tube, and the two is clearance fit；
Upper spring covers on central tube, and the two is clearance fit；
Lower slider set covers on central tube, and the two is clearance fit；
For lower spring pocket on central tube, the two is clearance fit.
Wherein, four upper body resistance-strengthening tablets are respectively welded at the outer circle of centering ring, and are distributed in cruciform symmetry；
Four lower body resistance-strengthening tablets are respectively welded at the outer circle of lower centering ring, and are distributed in cruciform symmetry.
Wherein, upper positioning ring is fixed on central tube in the upper end of central tube by upper jackscrew by upper positioning ring set；
Lower positioning ring is fixed on central tube in the upper end of central tube by lower jackscrew by lower positioning ring set.
It wherein, is to be threadedly coupled between the outer circle of upper sliding sleeve and the inner circle of a upper basic ring；
It is vulcanization connection between the outer circle of upper basic ring and a upper damping leather bowl.
Wherein, the outer circle of lower slider set, is threadedly coupled between the inner circle of lower basic ring；
It is vulcanization connection between lower basic ring and lower damping leather bowl.
Wherein, upper centering ring is mounted between the lower end surface of top connection and upper positioning ring；
Lower centering ring is mounted between the upper surface of lower contact and lower positioning ring.
By the above technical solution provided by the invention as it can be seen that compared with prior art, the present invention provides a kind of rightings
Formula damps device for filling, and scientific structure design is reasonable, with the processing is simple, spring reset effect is good, crosses the big, liquid flow that circulates
The advantages that dynamic stability, can effectively change load fluid flow regime, extend the flow distance of liquid, extend gravel pack service
Length can be not only used for extended reach well, it can also be used in horizontal well, be of great practical significance.
Detailed description of the invention
Fig. 1 is the overall structure sectional view that a kind of righting type provided by the invention damps device for filling；
Fig. 2 is the sectional view that a kind of righting type provided by the invention damps upper centering ring and upper body resistance-strengthening tablets in device for filling,
I.e. along the sectional view of line A-A shown in Fig. 1；
In figure: 1. top connections, centering ring on 2., body resistance-strengthening tablets on 3., jackscrew on 4., positioning ring on 5.；
Damping leather bowl on 6., sliding sleeve on 7., basic ring on 8., 9. upper springs, 10. lower damping leather bowls；
11. lower slider set, 12. lower basic rings, 13. lower springs, 14. lower positioning rings, 15. lower jackscrews；
16. lower centering ring, 17. lower body resistance-strengthening tablets, 18. central tubes, 19. lower contacts.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Referring to Fig. 1, Fig. 2, the present invention provides a kind of righting types to damp device for filling, applied to big in oil-gas field development
It is displaced in well and horizontal well, which includes central tube 18；
The upper and lower ends of central tube 18 are separately installed with top connection 1 and lower contact 19；
The outer circle of central tube 18 is sequentially installed with from top to bottom in the position between top connection 1 and lower contact 19
Centering ring 2, upper positioning ring 5, upper sliding sleeve 7, upper spring 9, lower slider set 11, lower spring 13, lower positioning ring 14 and lower centering ring
16；
Wherein, the lower end surface of upper sliding sleeve 7 is held out against in the upper surface of upper spring 9；
9 lower end surface of upper spring is held out against in the upper surface of lower slider set 11；
The lower end surface of lower slider set 11 is held out against in the upper surface of lower spring 13；
The lower end surface of lower spring 13 is held out against in the upper surface of lower positioning ring 14.
In the present invention, in specific implementation, the left end of top connection 1, for the oil pipe phase in extended reach well or horizontal well
Even (specially it is threadedly coupled).Specifically: internal screw thread is machined on the inside of the left end of top connection 1, in extended reach well or horizontal well
Oil pipe Excircle machining has external screw thread, and therefore, the upper end of top connection 1 is connect with the tubing round thread in extended reach well or horizontal well.
It should be noted that the gravel filling having is cemented the well inside tubing string, tool for an extended reach well or horizontal well
There is an oil pipe, oil pipe is that former oil and gas is transported from oil-gas Layer to the pipeline to earth's surface for after the completion of probing.
In the present invention, in specific implementation, 1 lower end inside of top connection is machined with internal screw thread, the outer circle upper end of central tube 18
With external screw thread, therefore, it is threadedly coupled between 1 lower end of top connection and the outer circle upper end of central tube 18.
In the present invention, in specific implementation, 2 sets of upper centering ring in 18 upper end of central tube, the two is clearance fit.
In the present invention, in specific implementation, four upper body resistance-strengthening tablets 3 are respectively welded at outer circle (the i.e. surrounding of centering ring 2
Outer wall), and be distributed in cruciform symmetry.
In the present invention, in specific implementation, upper end of 5 sets of the upper positioning ring in central tube 18, by upper jackscrew 4 by upper positioning
Ring 5 is fixed on central tube 18.
It should be noted that for the present invention, upper centering ring 2 be mounted on top connection 1 lower end surface and upper positioning ring 5 it
Between.In view of 2 sets of upper centering ring in 18 upper end of central tube, the two is clearance fit, and therefore, upper centering ring 2 can be in top connection 1
It is free to slide between lower end surface and upper positioning ring 5.
In the present invention, in specific implementation, for 7 sets of upper sliding sleeve on central tube 18, the two is clearance fit, can free skating
It is dynamic.
In the present invention, in specific implementation, connect between the outer circle of upper sliding sleeve 7 and the inner circle of a upper basic ring 8 for screw thread
It connects；
It is vulcanization connection between the outer circle of upper basic ring 8 and a upper damping leather bowl 6.
In the present invention, in specific implementation, 9 sets of upper spring on central tube 18, the two is clearance fit, can free skating
It is dynamic.
In the present invention, in specific implementation, lower slider covers 11 sets on central tube 18, and the two is clearance fit, can be free
Sliding.
In the present invention, in specific implementation, the outer circle of lower slider set 11 connects between the inner circle of lower basic ring 12 for screw thread
It connects；
It is vulcanization connection between lower basic ring 12 and lower damping leather bowl 10.
In the present invention, in specific implementation, for 13 sets of lower spring on central tube 18, the two is clearance fit, can free skating
It is dynamic.
In the present invention, in specific implementation, upper end of 14 sets of the lower positioning ring in central tube 18 will be lower fixed by lower jackscrew 15
Position ring 14 is fixed on central tube 18.
In the present invention, in specific implementation, 16 sets of lower centering ring in 18 upper end of central tube, the two is clearance fit.
In the present invention, in specific implementation, four lower body resistance-strengthening tablets 17 are respectively welded at the outer circle (i.e. four of lower centering ring 16
All outer walls), and be distributed in cruciform symmetry.Specific structure distribution, may refer to shown in Fig. 2, with body resistance-strengthening tablets 3 upper in Fig. 2 and upper
The distribution situation of centering ring 2 is consistent.
In the present invention, in specific implementation, lower centering ring 16 be mounted on lower contact 19 upper surface and lower positioning ring 14 it
Between.Since 16 sets of lower centering ring in 18 upper end of central tube, the two is clearance fit.Therefore, lower centering ring 16 can be in lower contact
It is free to slide between 19 upper surface and lower positioning ring 14.
In the present invention, in specific implementation, internal screw thread is machined on the inside of the upper end of lower contact 19, under the outer circle of central tube 18
End has external screw thread, therefore, is threadedly coupled between the upper end of lower contact 19 and the outer circle lower end of central tube 18.
The present invention is sent out this during construction operation (i.e. progress horizontal well or High angle gravel pack completion)
Bright device, is placed in the net horizontal section part of horizontal well, or places it in High angle gravel pack completion (i.e. big displacement
Well) in, at this time, 18 traverse of central tube is placed, and after the packing job of load fluid starts, load fluid is filled from 1 direction of top connection
It fills out stream to come, be flowed through first from the gap between upper centering ring 2 and upper body resistance-strengthening tablets 3, then partially liq is outside upper damping leather bowl 6
Along streaming, partially liq directly impacts on upper damping leather bowl 6, damping leather bowl 6 on such liquid integrated pushing, upper basic ring 8, on
(when horizontal positioned central tube, the then the right direction) movement downwards of sliding sleeve 7, and upper spring 9 is compressed, upper spring 9 again passes power
Lower slider set 11 is passed, lower slider covers 11 downward transmission forces, in conjunction with the lower spring 13 of compression；Meanwhile along upper 6 outer of damping leather bowl around
The liquid continuation of stream is flowed to the right, and lower damping leather bowl 10 is on the one hand directly impacted, and pushes lower damping leather bowl 10 and lower slider set 11
Compress lower spring 13.Through the above steps, righting type damping device for filling external fluid (as shown in Figure 1) provided by the invention
Flow regime is changed, and promotes more load fluid liquid, and along the flows outside of apparatus of the present invention, sand is more taken in driving
Liquid liquid flows to the right (the specially axial direction of central tube), and then extends the distance of liquid flowing, extends gravel filling and applies
The length of work realizes long well section gravel packing operations.
It should be noted that currently, during horizontal well long well section gravel filling process, need to extend liquid flowing away from
From the extension realized with a distance from filling in turn, it is generally pressure-control valve in view of current damping device for filling, which has knot
The problems such as structure is complicated, is also easy to produce vortex, and unstable, damping is bad, and spring reset ability is poor, for this purpose, the invention proposes
A kind of novel righting type damps device for filling, during carrying out horizontal well gravel packing operations, can allow more liquid
It is flowed outside pipe, by changing liquid flowing state, extends fluid flow distance, extend gravel pack service length, realize length
Well section gravel packing operations.The device of the invention, the processing is simple, at low cost, spring reset effect is good, crosses big, the liquid that circulates
Flowing is stablized, tool overall performance and stability are good.The present invention can be not only used for extended reach well, it can also be used in horizontal well.
Compared with prior art, the present invention has advantageous effects below:
1, device for filling is damped for righting type provided by the invention, uses the design method of double centralizers, sufficiently really
The centering effect for having protected tool makes liquid be in stable flow regime；
2, simultaneously, the present invention uses the design method of four board-type body resistance-strengthening tablets, considerably increases the area of passage of liquid
Vortex is avoided to generate simultaneously；
3, in addition, in the present invention, body resistance-strengthening tablets are connect with centering ring using welding manner, integral type processing scheme is avoided
Difficulty, reduce costs；
4, the present invention uses two groups of spring assemblies, and adjustable range is bigger, and spring reset performance is more preferable；
5, the present invention uses the design pattern of two groups of damping leather bowls, it is ensured that the damping of fluid；
6, the present invention devises positioning device and lower positioning device, and the activity of each components is limited in a certain range,
Enhance tool overall stability.
7, the present invention falls without any part or goes out to tool exterior in entire work progress, will not be to other works
Tool impacts, and has fully ensured that the safe and reliable of construction.
In conclusion compared with prior art, a kind of righting type damping device for filling provided by the invention, structure is set
It counts scientific and reasonable, has many advantages, such as that the processing is simple, spring reset effect is good, crosses big, the liquid flow dynamic stability that circulates, it can be effectively
Change load fluid flow regime, extend the flow distance of liquid, extends gravel pack service length, can be not only used for big displacement
Well, it can also be used in horizontal well, be of great practical significance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of righting type damps device for filling, which is characterized in that including central tube (18)；
The upper and lower ends of central tube (18) are separately installed with top connection (1) and lower contact (19)；
The outer circle of central tube (18) is sequentially installed with from top to bottom in the position between top connection (1) and lower contact (19)
Upper centering ring (2), upper positioning ring (5), upper sliding sleeve (7), upper spring (9), lower slider set (11), lower spring (13), lower positioning
Ring (14) and lower centering ring (16)；
Wherein, the lower end surface of upper sliding sleeve (7) is held out against in the upper surface of upper spring (9)；
Upper spring (9) lower end surface is held out against in the upper surface of lower slider set (11)；
The lower end surface of lower slider set (11) is held out against in the upper surface of lower spring (13)；
The lower end surface of lower spring (13) is held out against in the upper surface of lower positioning ring (14).
2. righting type as described in claim 1 damps device for filling, which is characterized in that the upper end of top connection (1) and big displacement
Tubing round thread connection in well or horizontal well；
It is to be threadedly coupled between top connection (1) lower end and the outer circle upper end of central tube (18)；
It is to be threadedly coupled between the upper end of lower contact (19) and the outer circle lower end of central tube (18).
3. righting type as described in claim 1 damps device for filling, which is characterized in that upper centering ring (2) are covered in central tube
(18) upper end, the two are clearance fit；
Upper sliding sleeve (7) covers on central tube (18), and the two is clearance fit；
Upper spring (9) covers on central tube (18), and the two is clearance fit；
Lower slider set (11) covers on central tube (18), and the two is clearance fit；
Lower spring (13) covers on central tube (18), and the two is clearance fit.
4. righting type as described in claim 1 damps device for filling, which is characterized in that four upper body resistance-strengthening tablets (3), be respectively welded
Outer circle in upper centering ring (2), and be distributed in cruciform symmetry；
Four lower body resistance-strengthening tablets (17) are respectively welded at the outer circle of lower centering ring (16), and are distributed in cruciform symmetry.
5. righting type as described in claim 1 damps device for filling, which is characterized in that upper positioning ring (5) are covered in central tube
(18) upper positioning ring (5) is fixed on central tube (18) by upper end by upper jackscrew (4)；
Lower positioning ring (14) covers in the upper end of central tube (18), and lower positioning ring (14) is fixed on central tube by lower jackscrew (15)
(18) on.
6. righting type as described in claim 1 damps device for filling, which is characterized in that the outer circle of upper sliding sleeve (7) and one
It is threaded connection between the inner circle of upper basic ring (8)；
It is vulcanization connection between the outer circle of upper basic ring (8) and one upper damping leather bowl (6).
7. righting type as described in claim 1 damps device for filling, which is characterized in that the outer circle of lower slider set (11), under
It is threaded connection between the inner circle of basic ring (12)；
It is vulcanization connection between lower basic ring (12) and lower damping leather bowl (10).
8. the righting type as described in any one of claims 1 to 7 damps device for filling, which is characterized in that upper centering ring (2) peace
Between the lower end surface and upper positioning ring (5) of top connection (1)；
Lower centering ring (16) is mounted between the upper surface of lower contact (19) and lower positioning ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549892.3A CN110118076B (en) | 2019-06-24 | 2019-06-24 | Centralizing type damping filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549892.3A CN110118076B (en) | 2019-06-24 | 2019-06-24 | Centralizing type damping filling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110118076A true CN110118076A (en) | 2019-08-13 |
| CN110118076B CN110118076B (en) | 2021-10-08 |
Family
ID=67524423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910549892.3A Active CN110118076B (en) | 2019-06-24 | 2019-06-24 | Centralizing type damping filling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110118076B (en) |
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|---|---|---|---|---|
| US5829525A (en) * | 1996-05-02 | 1998-11-03 | Bestline Liner Systems, Inc. | Bypass tool |
| RU2277628C2 (en) * | 2001-12-24 | 2006-06-10 | Владимир Иванович Иванников | Well filter cleaning device (variants) |
| CN201486538U (en) * | 2009-08-14 | 2010-05-26 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Sand prevention pipe string used for open-hole well completion of side-drilled multilateral well and plug-in type acid cleaning filling inner pipe string thereof |
| CN202755955U (en) * | 2012-03-31 | 2013-02-27 | 大港油田集团有限责任公司 | Gravel packing string for horizontal wells |
| CN103362483A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Horizontal well gravel-packed string and pressure control valves thereof |
| CN204126612U (en) * | 2014-10-19 | 2015-01-28 | 中国石油集团渤海钻探工程有限公司 | For horizontal well bottom cycle gravel pack pressure of return water control tool |
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| CN108843384A (en) * | 2018-06-21 | 2018-11-20 | 中国石油大学(华东) | The long SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL method of the super Shallow Oil-Gas in ocean |
-
2019
- 2019-06-24 CN CN201910549892.3A patent/CN110118076B/en active Active
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|---|---|---|---|---|
| US5829525A (en) * | 1996-05-02 | 1998-11-03 | Bestline Liner Systems, Inc. | Bypass tool |
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| CN204126612U (en) * | 2014-10-19 | 2015-01-28 | 中国石油集团渤海钻探工程有限公司 | For horizontal well bottom cycle gravel pack pressure of return water control tool |
| CN108843384A (en) * | 2018-06-21 | 2018-11-20 | 中国石油大学(华东) | The long SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL method of the super Shallow Oil-Gas in ocean |
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| Publication number | Publication date |
|---|---|
| CN110118076B (en) | 2021-10-08 |
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