CN108331562A - A kind of anti-stifled sand control screen of flexibility wide spectrum - Google Patents
A kind of anti-stifled sand control screen of flexibility wide spectrum Download PDFInfo
- Publication number
- CN108331562A CN108331562A CN201810110977.7A CN201810110977A CN108331562A CN 108331562 A CN108331562 A CN 108331562A CN 201810110977 A CN201810110977 A CN 201810110977A CN 108331562 A CN108331562 A CN 108331562A
- Authority
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- China
- Prior art keywords
- base tube
- sand control
- calking
- expanding block
- wall
- 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
- 239000004576 sand Substances 0.000 title claims abstract description 60
- 238000001228 spectrum Methods 0.000 title claims abstract description 17
- 229920001875 Ebonite Polymers 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 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
- 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
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of flexible anti-stifled sand control screens of wide spectrum, which is characterized in that it includes：Base tube, upper support ring, lower support ring, expanding block fixed ring, expanding block, calking pipe, filling haydite and the hollow protective case of hard rubber；Base tube is hollow cylinder structure, and side wall is evenly distributed with multiple latasutures；In the fixed upper support ring of base tube upper and lower side outer wall and lower support ring；Calking pipe sleeves more than two sections is set outside base tube, is often saved and is formed annular space between calking pipe and base tube；It is installed with expanding block fixed ring on base tube outer wall between two adjacent sections calking pipe, two pieces of expanding blocks are symmetrical arranged in the both sides of expanding block fixed ring；Often the free end of section calking pipe is overlapped on the expanding block of respective side; it is in air-tight state to make the annular space between calking pipe and base tube; filling haydite is filled in closed annular space; every section calking pipe is set to form a screen sub with corresponding base tube, the expanding block fixed ring periphery between two adjacent sections screen sub is arranged with the hollow protective case of hard rubber.
Description
Technical field
The present invention relates to a kind of flexible anti-stifled sand control screens of wide spectrum, belong to sand control water-control sieve tube technical field.
Background technology
It can largely shake out when loose reservoir exploitation, sand control is needed to exploit.Sand control screen mainly has the high-quality screen casing of metal at present
And gravel filling sand prevention.The high-quality screen sand control parameter of metal is single and shows there is stronger suction-operated to shale, heterogeneous
Reservoir and the high reservoir of shale content easily occur to block and seriously affect yield, in addition the high-quality screen casing multiple layer metal material of metal
Sand control structure entire combination keeps its rigidity larger, and tripping in is difficult in High angle well section and horizontal well.Gravel filling sand prevention due to
Sand control pipe is not placed in the middle in net horizontal section, and not into gravel, upper space cannot be filled with greatly gravel, cause the small filling of lower space
Pack effectiveness is low, and quality is difficult to ensure, and of high cost, greatly limits its use
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide one kind can be used in complicated reservoirs high-inclination directional well and level
Well, and the anti-stifled sand control screen of flexible wide spectrum with efficient sand control, stronger anti-clogging.
To achieve the above object, the present invention uses following technical scheme：A kind of anti-stifled sand control screen of flexibility wide spectrum, feature
It is, it includes：The side wall of base tube with hollow cylinder structure, the base tube is evenly distributed with multiple latasutures；It is installed in institute respectively
State the upper support ring of base tube upper and lower side outer wall and lower support ring；The above calking pipe being nested with outside the base tube of two sections, and it is first
The upper end for saving the calking pipe is overlapped in the upper support ring, and the lower end of calking pipe described in minor details is overlapped in lower support ring,
It often saves and forms annular space between the calking pipe and the base tube；The base tube outer wall between calking pipe described in two adjacent sections
Upper fixed expanding block fixed ring is symmetrical arranged two pieces of expanding blocks, and two expanding blocks point in the both sides of the expanding block fixed ring
Do not agree with the upper surface of the expanding block fixed ring and lower face；The free end for often saving the calking pipe is overlapped on respective side
On the expanding block, it is in air-tight state to make the annular space between the calking pipe and base tube, in the closed annular
It is filled with filling haydite in space, so that every section calking pipe is formed a screen sub with the corresponding base tube, in two adjacent sections institute
The expanding block fixed ring periphery stated between screen sub is arranged with the hollow protective case of hard rubber.
It is tapped in the upper and lower side of the base tube, for being connect with box cupling.
The upper end outer wall of the lower end outer wall of the upper support ring, the outer wall upper and lower side of fixed ring and lower support ring is equipped with
Shoulder.
The granularity for often saving the filling haydite in the screen sub is all different, and from top to bottom often saves the screen casing
The granularity of the filling haydite is gradually reduced in pipe nipple.
The filling haydite using the smooth graininess sand in surface made of gravel or heat safe high strength plastics, and
Graininess sand surface is coated with the coating that oleophylic removes water.
The inner wall of the expanding block is plane or concave surface.
The resin base synthetic material of micro-strain can be used in the expanding block.
The outer wall surface for often saving the calking pipe is coated with inert coatings.
The present invention uses above technical scheme, has the following advantages that：1, two sections or more are nested with outside base tube of the invention
Calking pipe makes entire sand control screen be connected by more piece screen sub and is formed, and the expanding block between two adjacent sections screen sub is fixed
The periphery of ring is equipped with the hollow protective case of hard rubber, can effectively reduce the rigidity of entire sand control screen, can make entire sand control
Screen casing can be with the generation curvilinear motion of the borehole wall；Meanwhile, it is capable to avoid screen casing during oil reservoir Disengagement zone in transferring well and well
Wall collides, and ensures the centralizer in well of screen casing, make entire sand control screen be suitable for complicated reservoirs high-inclination directional well and
Horizontal well；In addition, being filled with filling haydite in each screen sub, make screen casing that there is sand control anti-clogging.2, the present invention's is every
It is filled with surface in section screen sub and is coated with the filling haydite that oleophylic removes water coating, filling haydite granularity gradually subtracts from top to bottom
It is small, so that the permeability of entire screen casing is reduced from top to bottom, can realize that entire screen casing adaptively descends Different Strata situation, realize and divide
Layer sand control control water；Meanwhile upper and lower expanding block is generated small elastic deformation by when corresponding to formation pressure, can adjust corresponding screen casing
The permeability of filling haydite in pipe nipple, improves entire screen casing and formation pressure is adaptively descended to change, improve the sand control of entire screen casing
Outlet capacity is controlled, the moisture content of mined crude oil is reduced.3, often section calking pipe outer wall of the invention is coated with inert coatings, makes whole
A sand control screen outer surface has the characteristic of hydrophobic anti-mud, avoids the gap of shale obstruction calking pipe, greatly improves sand control screen
Anti-clogging in high shale content content reservoir.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the partial structural diagram of the present invention；
Fig. 3 is the cross-sectional view of expanding block of the present invention；
Fig. 4 is another cross-sectional view of expanding block of the present invention.
Specific implementation mode
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 and Figure 2, the present invention provides a kind of flexible anti-stifled sand control screen of wide spectrum, it includes base tube 1, upper support
Ring 21, lower support ring 22, expanding block fixed ring 3, expanding block 4, calking pipe 5, filling haydite 6 and the hollow protective case of hard rubber 7；Base
Pipe 1 is hollow cylinder structure, and multiple latasutures are evenly distributed in the side wall of base tube 1, distinguishes fixed upper branch in the upper and lower side outer wall of base tube 1
Held in ring 21 and lower support ring 22；Calking pipes 5 more than two sections is nested with successively outside base tube 1, wherein the upper end of first section calking pipe 5
It is overlapped in support ring 21, the lower end of minor details calking pipe 5 is overlapped in lower support ring 22, is often saved between calking pipe 5 and base tube 1
Annular space is formed, expanding block fixed ring 3 is installed on 1 outer wall of base tube between two adjacent sections calking pipe 5, is fixed in expanding block
The both sides of ring 3 are symmetrical arranged two pieces of expanding blocks 4, and two expanding blocks 4 respectively with the upper surface of expanding block fixed ring 3 and lower face contract
It closes, the free end for often saving calking pipe 5 is overlapped on the expanding block 4 of respective side, makes the annular space between calking pipe 5 and base tube 1
In air-tight state；Meanwhile it being filled with filling haydite 6 in the closed annular space between every section calking pipe 5 and base tube 1, in this way
Often section calking pipe 5 forms a screen sub 10 with corresponding base tube 1；Expanding block between two adjacent sections screen sub 10 is fixed
3 periphery of ring is arranged with the hollow protective case 7 of hard rubber, in this way, the space outside in entire sand control screen is equipped with multiple hard rubber sky
Heart protective case 7, during sand control screen transfers into well oil reservoir Disengagement zone, the hollow protective case 7 of hard rubber is by sand control screen
Outer wall separated with the borehole wall, keep centralizer of the entire sand control screen in well, prevent the collision for avoiding sand control screen and the borehole wall,
Meanwhile whole sand control screen is connected by more piece screen sub and is formed, and the rigidity of entire sand control screen can be reduced, and makes entire screen casing
A certain amount of bending can occur with the generation curvilinear motion of the borehole wall, more easily tripping in when being transferred in extended reach well.
Further, tapped in the upper and lower side of base tube 1, for being connect with box cupling.
Further, the resin base synthetic material of micro-strain can be used in expanding block 4.
Further, filling haydite 6 is using the smooth graininess sand in surface made of gravel or heat safe high strength plastics
Son, and it is coated with the coating that oleophylic removes water in graininess sand surface, the sand production rate and moisture content of exploitation can be effectively reduced.
Further, the upper end of the lower end outer wall of upper support ring 21, the outer wall upper and lower side of fixed ring 3 and lower support ring 22
Outer wall is equipped with shoulder, to ensure that the stabilization of calking pipe 5 is nested with outside base tube.
Further, often the granularity of filling haydite 6 is all different in section screen sub 10, and from top to bottom per knotter screen pipe
The granularity of filling haydite 6 is gradually reduced in pipe nipple 10；In this way, when by entire screen insertion to well, expanding block 4 is in corresponding oil reservoir
Micro-strain can occur under pressure, the permeability of filling haydite 6 in each section screen sub 10 can be adjusted, make entire sand control screen
There is different sand control parameters in the longitudinal direction, can adapt to underground Different Strata situation, realize to the wide of heterogeneous reservoir
Sand control is composed, production capacity is improved.
Further, as shown in Figure 3, Figure 4, the inner wall of expanding block 4 is plane or concave surface.
Further, often the outer wall surface of section calking pipe 5 is coated with inert coatings, so that entire sand control screen outer surface is had and dredges
The characteristic of the anti-mud of water avoids the gap of shale obstruction calking pipe 5, it is anti-in high shale content content reservoir to greatly improve sand control screen
Stifled performance.
The present invention use process is as follows：During by oil reservoir Disengagement zone in the lower going-into-well of entire sand control screen, due to
The periphery of each expanding block fixed ring 3 is arranged with the hollow protective case 7 of hard rubber, is spaced to be formed in entire screen casing length direction
The hollow protective case 7 of multiple hard rubber being arranged, the hollow protective case 7 of hard rubber are acted on the borehole wall, avoid 5 outer wall of calking pipe and the borehole wall
It dawdles, increases centralizer of the entire screen casing in well while protecting calking pipe 5；Calking pipe 5 divides for more piece, to make entirely to sieve
Pipe is in multiple sand control pipe nipple cascaded structures, which can reduce overall screen pipe stiffness, enable entire screen casing with the borehole wall
Generation curvilinear motion, it is easier to lower going-into-well in, increase entire screen casing in high angle hole, horizontal well can the whole property of tripping in；
Behind decentralization to specified oil reservoir Disengagement zone, since the granularity that entire screen casing often saves the filling haydite 6 in cavity from top to bottom gradually subtracts
Small, then its permeability is also gradually reduced, and each screen sub has different sand control parameters, and screen casing is made to be suitable for heterogeneous reservoir,
It realizes the wide spectrum sand control to heterogeneous reservoir, improves production capacity；The anti-stifled sand control screen outer surface metal shell spray of flexibility wide spectrum
Inert coatings are applied, sand control pipe shell adhesion shale is prevented and blocks, it is anti-in high shale content content reservoir to greatly improve sand-proof pipe
Stifled performance；It fills haydite 6 and replaces gravel filling, and haydite shows that being coated with oleophylic removes water coating so that haydite fills screen casing tool
There are sand control and control water effect, the sand production rate and moisture content of exploitation reducig.
The present invention is only illustrated with above-described embodiment, and structure, installation position and its connection of each component are all can have
Changed.Based on the technical solution of the present invention, all improvement that individual part is carried out according to the principle of the invention or equivalent
Transformation, should not exclude except protection scope of the present invention.
Claims (8)
1. a kind of anti-stifled sand control screen of flexibility wide spectrum, which is characterized in that it includes：
The side wall of base tube with hollow cylinder structure, the base tube is evenly distributed with multiple latasutures；
It is installed in the upper support ring of the base tube upper and lower side outer wall and lower support ring respectively；
The above calking pipe being nested with outside the base tube of two sections, and the first upper end for saving the calking pipe is overlapped on the upper support
On ring, the lower end of calking pipe described in minor details is overlapped in lower support ring, is often saved and is formed ring between the calking pipe and the base tube
Shape space；
Fixed expanding block fixed ring, is fixed in the expanding block on the base tube outer wall between calking pipe described in two adjacent sections
The both sides of ring are symmetrical arranged two pieces of expanding blocks, and two expanding blocks respectively with the upper surface of the expanding block fixed ring and lower face contract
It closes；
The free end for often saving the calking pipe is overlapped on the expanding block of respective side, is made between the calking pipe and base tube
The annular space is in air-tight state, is filled with filling haydite in the closed annular space, makes every section calking Guan Yuxiang
The base tube answered forms a screen sub, and the expanding block fixed ring periphery between the screen sub described in two adjacent sections is arranged with
The hollow protective case of hard rubber.
2. a kind of flexible anti-stifled sand control screen of wide spectrum as described in claim 1, it is characterised in that：In the upper and lower side of the base tube
It is tapped, for being connect with box cupling.
3. a kind of flexible anti-stifled sand control screen of wide spectrum as described in claim 1, it is characterised in that：The lower end of the upper support ring
The upper end outer wall of outer wall, the outer wall upper and lower side of fixed ring and lower support ring is equipped with shoulder.
4. a kind of flexible anti-stifled sand control screen of wide spectrum as described in claim 1, it is characterised in that：It often saves in the screen sub
It is described filling haydite granularity be all different, and from top to bottom often save in the screen sub it is described filling haydite granularity by
It is decrescence small.
5. a kind of flexible anti-stifled sand control screen of wide spectrum as claimed in claim 4, it is characterised in that：The filling haydite uses gravel
The smooth graininess sand in surface made of stone or heat safe high strength plastics, and be coated with oleophylic in graininess sand surface and remove water
Coating.
6. a kind of flexible anti-stifled sand control screen of wide spectrum as described in claim 1, it is characterised in that：The inner wall of the expanding block is
Plane or concave surface.
7. a kind of flexible anti-stifled sand control screen of wide spectrum as claimed in claim 6, it is characterised in that：The expanding block can be used micro-
The resin base synthetic material of small deformation.
8. a kind of flexible anti-stifled sand control screen of wide spectrum as described in any one of claim 1 to 7, it is characterised in that：Often described in section
The outer wall surface of calking pipe is coated with inert coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110977.7A CN108331562A (en) | 2018-02-05 | 2018-02-05 | A kind of anti-stifled sand control screen of flexibility wide spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110977.7A CN108331562A (en) | 2018-02-05 | 2018-02-05 | A kind of anti-stifled sand control screen of flexibility wide spectrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108331562A true CN108331562A (en) | 2018-07-27 |
Family
ID=62928405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810110977.7A Pending CN108331562A (en) | 2018-02-05 | 2018-02-05 | A kind of anti-stifled sand control screen of flexibility wide spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108331562A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271029A (en) * | 2020-03-13 | 2020-06-12 | 中石化绿源地热能(陕西)开发有限公司 | Sand-silting-preventing water filter pipe for sandstone geothermal well |
| CN111396001A (en) * | 2020-03-25 | 2020-07-10 | 中国石油大学(华东) | Sand control screen pipe for effluent gas well and natural gas hydrate well and sand control and water control combined application method thereof |
| CN111396027A (en) * | 2020-03-25 | 2020-07-10 | 中国石油大学(华东) | Horizontal well sand production and water outlet profile prediction method and sand control and water control sieve tube optimization design method |
| CN112267880A (en) * | 2020-11-04 | 2021-01-26 | 中国石油大学(北京) | Horizontal well subsection sand prevention and water control pipe string and design method thereof |
| CN112282708A (en) * | 2020-12-04 | 2021-01-29 | 中国石油大学(北京) | Screen pipe, pipe string and unblocking method |
| CN112324400A (en) * | 2020-12-04 | 2021-02-05 | 中国石油大学(北京) | Pre-filled sand control screen pipe nipple and processing method thereof |
| CN112377156A (en) * | 2020-12-04 | 2021-02-19 | 中国石油大学(北京) | Pre-filled sand control screen pipe and processing method thereof |
| CN112392447A (en) * | 2020-12-04 | 2021-02-23 | 中国石油大学(北京) | Sieve tube |
| CN112943177A (en) * | 2021-02-07 | 2021-06-11 | 中国石油大学(北京) | Variable density pre-filled sieve tube and using method thereof |
| CN114075954A (en) * | 2020-08-20 | 2022-02-22 | 中国石油化工股份有限公司 | Prevent blockking up high infiltration sand pipe |
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| US20040016546A1 (en) * | 2002-07-24 | 2004-01-29 | Nguyen Philip D. | Method and apparatus for transferring material in a wellbore |
| CN201810288U (en) * | 2010-07-23 | 2011-04-27 | 刘振宇 | All-welded vertical joint type sand control screen pipe |
| CN105612306A (en) * | 2013-11-25 | 2016-05-25 | 哈利伯顿能源服务公司 | Superhydrophobic flow control device |
| CN107269253A (en) * | 2017-08-24 | 2017-10-20 | 长江大学 | A kind of restraining liner |
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| US20040016546A1 (en) * | 2002-07-24 | 2004-01-29 | Nguyen Philip D. | Method and apparatus for transferring material in a wellbore |
| CN201810288U (en) * | 2010-07-23 | 2011-04-27 | 刘振宇 | All-welded vertical joint type sand control screen pipe |
| CN105612306A (en) * | 2013-11-25 | 2016-05-25 | 哈利伯顿能源服务公司 | Superhydrophobic flow control device |
| CN107269253A (en) * | 2017-08-24 | 2017-10-20 | 长江大学 | A kind of restraining liner |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271029A (en) * | 2020-03-13 | 2020-06-12 | 中石化绿源地热能(陕西)开发有限公司 | Sand-silting-preventing water filter pipe for sandstone geothermal well |
| CN111396001B (en) * | 2020-03-25 | 2021-05-11 | 中国石油大学(华东) | Sand control screen pipe for effluent gas well and natural gas hydrate well and sand control and water control method thereof |
| CN111396001A (en) * | 2020-03-25 | 2020-07-10 | 中国石油大学(华东) | Sand control screen pipe for effluent gas well and natural gas hydrate well and sand control and water control combined application method thereof |
| CN111396027A (en) * | 2020-03-25 | 2020-07-10 | 中国石油大学(华东) | Horizontal well sand production and water outlet profile prediction method and sand control and water control sieve tube optimization design method |
| CN114075954A (en) * | 2020-08-20 | 2022-02-22 | 中国石油化工股份有限公司 | Prevent blockking up high infiltration sand pipe |
| CN112267880B (en) * | 2020-11-04 | 2021-12-17 | 中国石油大学(北京) | Horizontal well subsection sand prevention and water control pipe string and design method thereof |
| CN112267880A (en) * | 2020-11-04 | 2021-01-26 | 中国石油大学(北京) | Horizontal well subsection sand prevention and water control pipe string and design method thereof |
| CN112324400A (en) * | 2020-12-04 | 2021-02-05 | 中国石油大学(北京) | Pre-filled sand control screen pipe nipple and processing method thereof |
| CN112377156A (en) * | 2020-12-04 | 2021-02-19 | 中国石油大学(北京) | Pre-filled sand control screen pipe and processing method thereof |
| CN112392447A (en) * | 2020-12-04 | 2021-02-23 | 中国石油大学(北京) | Sieve tube |
| CN112282708A (en) * | 2020-12-04 | 2021-01-29 | 中国石油大学(北京) | Screen pipe, pipe string and unblocking method |
| CN112392447B (en) * | 2020-12-04 | 2022-04-19 | 中国石油大学(北京) | Sieve tube |
| CN112282708B (en) * | 2020-12-04 | 2022-07-05 | 中国石油大学(北京) | Screen pipe, pipe string and unblocking method |
| CN112324400B (en) * | 2020-12-04 | 2023-02-03 | 中国石油大学(北京) | Pre-filled sand control screen pipe nipple and processing method thereof |
| CN112943177A (en) * | 2021-02-07 | 2021-06-11 | 中国石油大学(北京) | Variable density pre-filled sieve tube and using method thereof |
| CN112943177B (en) * | 2021-02-07 | 2022-02-18 | 中国石油大学(北京) | Variable-density pre-filled sieve tube and using method thereof |
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Application publication date: 20180727 |
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