CN110513083A - One kind can accept coal dust oil pipe - Google Patents
One kind can accept coal dust oil pipe Download PDFInfo
- Publication number
- CN110513083A CN110513083A CN201910795583.4A CN201910795583A CN110513083A CN 110513083 A CN110513083 A CN 110513083A CN 201910795583 A CN201910795583 A CN 201910795583A CN 110513083 A CN110513083 A CN 110513083A
- Authority
- CN
- China
- Prior art keywords
- coal dust
- cup
- pipe
- sieve
- oil pipe
- 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.)
- Granted
Links
- 239000002817 coal dust Substances 0.000 title claims abstract description 94
- 239000003129 oil well Substances 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims description 40
- 238000003466 welding Methods 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 2
- 238000000151 deposition Methods 0.000 abstract description 8
- 230000008021 deposition Effects 0.000 abstract description 7
- 230000001174 ascending effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 239000007789 gas Substances 0.000 description 20
- 239000002245 particle Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 238000005065 mining Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 101150038956 cup-4 gene Proteins 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000020681 well water Nutrition 0.000 description 4
- 239000002349 well water Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005406 washing 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
-
- 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
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
-
- 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
- E21B43/006—Production of coal-bed methane
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The present invention relates to one kind can accept coal dust oil pipe.It is characterized by comprising oil pipe, internal lining pipe and connect coal dust sieve cup, the oil pipe is plain end oil well pipe or heavy wall tubing, and the internal lining pipe is welded by three fan arc-shaped plates, it is described connect coal dust sieve cup and be welded on the inside of arc-shaped plate by conical camber sieve form.The present invention is that internal lining pipe is inserted into oil pipe and in two ends internal lining pipe and oil pipe is welded, be welded on internal lining pipe connect coal dust sieve cup be equidistantly in staggeredly ascending manner be distributed in oil pipe, rim of a cup is upward.Present invention mainly solves CBM Drainage hydromining gas well coal dust depositions in oil pipe bottom, leads to line clogging, holddown and buries pump problem.
Description
Technical field
The present invention relates to one kind can accept coal dust oil pipe, belongs to mining engineering technical field.
Background technique
The exploitation of mining engineering technical field, especially coal bed gas.By the water in discharge coal seam, coal petrography reservoir pressure is reduced
Power releases the coal bed gas being adsorbed in coal petrography reservoir desorption.During coal bed gas well water pumping gas production, coal seam is by crowded
Bad, generation coal dust is crushed, after recovered water carrying coal dust enters pit shaft, the sucking of mining pump is promoted to ground, passes through well head water pipeline
Discharge.
According to coal bed gas well water pumping gas production principle, the shaft structure of coal bed gas well is usually tripping in oil pipe and row in casing
Pump is adopted, is pumped by mining to the water pressurization for carrying coal dust.When the water velocity for carrying pulverized coal particle is very fast, pulverized coal particle can be suitable
Benefit carries out pit shaft, if water velocity is relatively slowly or after coal bed gas well closing well, the pulverized coal particle in oil pipe starts to settle, accumulation
In lower wellbore, if coal powder density is higher in pit shaft, so that the height of pulverized coal particle accumulation can reach tens meters, lead to pipeline
It blocks, bury the generation of phenomena such as pump and holddown, coal bed gas well is caused not exploit normally.
In view of the above-mentioned problems, correlative study and invention are such to solve mainly for improving mining method or improving mining pump
Problem.Wherein for being deposited on the pulverized coal particle of wellbore bottom, sweep-out method mainly has inject from oil jacket annulus counter following at present
Washing-round well, using huge discharge hydraulic blow coal dust, success rate is not high, is easy to produce voltage-sensitive effect and destroys the channel coal seam Chan Qi, leads
Yield after operation is caused to be difficult to be restored to previous level, and frequent cleaning pipeline operations increase development cost.Another method is
Shaft bottom be added sand control screen, can control into pit shaft pulverized coal particle partial size, thus avoid because coal particle size it is larger caused by
Line clogging, holddown the problems such as generation, but this method be unfavorable in time exclude enter pit shaft coal dust, for a long time produce
It will cause shaft bottom coal dust deposition and bury coal seam.Not yet discovery is improving oil pipe in a manner of accepting coal dust come pre- anti-slow at present
Solve the correlative study and invention of problems.
Summary of the invention
In coal bed gas well water pumping gas production production process, into the coal dust of pit shaft, it should pit shaft is discharged with recovered water in time,
Otherwise coal dust is deposited on shaft bottom in pit shaft, so that the height of pulverized coal particle accumulation is more than coal seam, coal seam is caused to bury.If gas well
Stop well, the problems such as pump, holddown is buried in the coal dust sedimentation on pump in oil pipe, caused line clogging.The purpose of the present invention is novelties
One kind is provided can accept coal dust oil pipe, oil pipe bottom coal dust can be largely reduced by the undertaking to pulverized coal particle in oil pipe
Deposition solves the problems, such as to be previously mentioned in background technique, and the present invention may extend away and be used in the oil/gas well for carrying sand in pit shaft
In.
In order to reach the goals above, the present invention adopts the following technical solutions:
One kind can accept coal dust oil pipe, including oil pipe, internal lining pipe and connect coal dust sieve cup, and the present invention is to be inserted into internal lining pipe
Internal lining pipe and oil pipe are welded in oil pipe and in two ends, coal dust sieve cup is connect and is interspersed on internal lining pipe, rim of a cup to
On, to achieve the purpose that accept sedimentation coal dust.
Further, the oil pipe is plain end oil well pipe or heavy wall tubing.
Further, the internal lining pipe is docked two-by-two by the side of three fan arc-shaped plates, is formed by connecting, is repaired by straight weld
Whole soldered keeps pipe outside weld smooth, and the arc-shaped plate is smooth plate by mold extrusion forming, corresponding angle of circumference β
=120 °, material can need to select according to corrosion-resistant, and a typical selection is 0Cr18Ni9 (304 stainless steel), have preferable
Corrosion resistance, 0.4~1.2mm of pipe thickness, respective outer diameters D3It is slightly less than pipe aperture D2, length is identical as oil pipe.
Further, the coal dust sieve cup that connects is welded on arc-shaped plate medial surface by conical camber sieve and is formed, and
It after arc-shaped plate welds to form tube body, connects coal dust sieve cup and is staggered in pipe, it is upward to connect coal dust sieve cup rim of a cup.
Further, described to connect coal dust sieve cup, material is identical as internal lining pipe, and it is α that rim of a cup side, which corresponds to angle of circumference, connects coal
The outer wall of dressing sieve net cup (4) fan-shaped region corresponding without departing from arc-shaped plate (6) medial surface, the vertical height of coal dust sieve cup (4)
Spending h is rim of a cup side to 2~3 times of arc-shaped plate (6) medial surface maximum distance L.
Further: the coal dust sieve cup-shaped that connects is conical camber, when connecing coal dust free in coal dust sieve cup, water flow
It may pass through sieve flowing, when connecing has coal dust in coal dust sieve cup, water flow passes through sieve, generates impact, water velocity to coal dust
It increases to when can carry coal dust, then realizes washing from and carrying for coal dust.
Further, the central diameter for the pulverized coal particle that the pore size of the sieve mesh is produced depending on coal bed gas well is big
It is small, it is 3~5 times of coal dust central diameter under normal circumstances, i.e., when pulverized coal particle central diameter is 0.2mm, the aperture of sieve mesh can be set
It is set to 0.6mm~1.0mm.Even if single pulverized coal particle is not accepted by sieve, can also be formed in infall process with other coal dusts
It puts up a bridge and coal dust sieve cup is connect by another accepts, or be deposited on and formed the connecing in coal dust sieve cup of stably depositing structure.
Further, described to accept coal dust oil pipe, it is characterised in that: the internal lining pipe being welded is inserted into oil pipe.
In two ends by internal lining pipe and oil pipe by argon arc welding welding, welding completely encloses the two gap.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention be arranged on internal lining pipe it is multiple connect coal dust sieve cup, the coal dust sieve cup that connects is welded in internal lining pipe
Inner wall can agree with completely with liner inside pipe wall, by coal dust settle principle it is found that connect coal dust sieve cup can accept to greatest extent it is heavy
The coal dust of drop, to greatly reduce the deposition for pumping upper pulverized coal particle, avoid cause because of a large amount of coal dusts deposition line clogging,
The generation for phenomena such as burying pump, holddown, so as to avoid the execution of the maintenance measure of the bug dustings such as reacting cycle well-flushing, and in coal
During layer gas well liquid loading, connecing the coal dust deposited in coal dust sieve cup can have been rushed simultaneously by ascending water by connecing coal dust sieve cup mesh
Discharge pit shaft is carried, the mechanism that pit shaft is discharged in a kind of coal dust deposition again is provided, reduces maintenance cost.
(2) the special shape structure of the present invention for accepting coal dust oil pipe can make pipe that coal dust sieve cup be inscribed to water
Stream influences to reduce, and reduces in oil pipe and normally conveys water resistance.
(3) internal lining pipe of the present invention has been isolated water and has been contacted with oil pipe, has the function of preventing tube corrosion.
(4) present invention is provided in oil pipe and connects coal dust sieve cup, occupies certain space, is not suitable for having bar class mining
Pump lifting, such as oil well pump, ground driving screw pump；Be suitably adapted for the pump lifting of no bar class mining, as jet pump, gaslift, electric submersible pump,
Latent linear dynamo oil pump of electric submersible screw pump, electricity etc..The present invention cannot be only used for coal bed gas well, apply also for carrying sand in pit shaft
In the oil/gas well of grain, as solved the problems, such as sand deposition caused by sand production of oil-gas wells.
Detailed description of the invention
Fig. 1 is the vertical section structure schematic diagram that one kind of the present invention can accept coal dust oil pipe；
Fig. 2 be one kind of the present invention can accept coal dust oil pipe welding connect coal dust sieve cup arc-shaped plate structural representation
Figure；
Fig. 3 be one kind of the present invention can accept coal dust oil pipe welding connect coal dust sieve cup arc-shaped plate end face structure
Schematic diagram；
Fig. 4 illustrates for the coal dust sieve cup that connects that one kind of the present invention can accept coal dust oil pipe with arc-shaped plate cross section structure
Figure；
Fig. 5 is the end face half-section diagram that one kind of the present invention can accept coal dust oil pipe；
Fig. 6 be one kind of the present invention can accept coal dust oil pipe connect coal dust sieve cup and arc-shaped plate perspective view.
In figure: 1- oil pipe, 2- internal lining pipe, 3- welding straight weld, 4- connect coal dust sieve cup, 5- sieve mesh, 6- arc panel
Argon-arc welding seam, 8- connect coal dust sieve cup and arc-shaped plate weld weld seam at material, the end face 7- gap.D1For oil pipe outer diameter, D2For
Pipe aperture, D3For liner pipe outside diameter, D4For liner bore, r1For tube inner wall radius, r2For liner inside pipe wall radius, r3For
Screen net cup rim of a cup exterior radius is connect, h is that taper connects coal dust sieve cup vertical height, and L is the vertical height of coal dust sieve cup (4)
H is rim of a cup side to arc-shaped plate (6) medial surface maximum distance, and α is the angle of circumference for connecing coal dust sieve cup rim of a cup, and β is arc panel
Material cambered surface angle of circumference, θ are the angle for connecing coal dust sieve cup lateral surface and water flowing direction.
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 the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Please refer to Fig. 1~4, a kind of embodiment provided by the invention: one kind can accept coal dust oil pipe, including oil pipe 1, liner
Pipe 2 multiple connects coal dust sieve cup 4.The oil pipe 1 is plain end oil well pipe, the side two that the internal lining pipe 2 fans arc-shaped plates 6 by three
Two docking, are formed by straight seam welding.It is described connect coal dust sieve cup 4 arc-shaped plate medial surface is welded on by conical camber sieve and
Composition connects coal dust sieve cup and arranges in the Guan Zhongcheng ascending manner that interlocks, make to be welded with multiple and when arc-shaped plate welds to form tube body after
The internal lining pipe 2 for connecing coal dust sieve cup 4 is smoothly inserted into oil pipe 1, then the gap between 1 two ends of internal lining pipe 2 and oil pipe is passed through
Argon arc welding welding, argon-arc welding seam 7 completely encloses the gap between oil pipe and internal lining pipe at the gap of end face, to assemble cost hair
It is bright.
Further, the oil pipe is plain end oil well pipe, having a size of 27/8In, outer diameter D1=73.02mm, wall thickness are
5.51mm, internal diameter D1=62.00mm, grade of steel N80.
The internal lining pipe 2 is docked two-by-two by the side of three fan arc-shaped plates 6, is formed by straight seam welding, and polishing welding is straight
Weld seam (3) makes smooth on the outside of pipe, and the arc-shaped plate 6 is steel plate by mold extrusion forming, and corresponding angle of circumference β=
120 °, the pipe thickness 0.5mm of internal lining pipe 2, outer diameter D3=61.5mm, length are identical as oil pipe.
The coal dust sieve cup 4 that connects is welded on arc-shaped plate medial surface by conical camber sieve and is formed, and sieve shape is
Conical camber, angle theta=15 ° with water flowing direction, in recovery process, connect coal dust sieve 4 pairs of water of cup generation resistance compared with
It is small；It connects coal dust sieve cup rim of a cup and corresponds to radius of curvature r3< 28.5mm, rim of a cup outer wall correspond to circumferential angle alpha=130 °, vertical height h
=60mm.
The aperture of the sieve mesh 5 is set as 3~5 times of coal dust central diameter, i.e., when pulverized coal particle central diameter is 0.2mm,
The aperture of sieve mesh 5 may be configured as 0.6mm~1mm.
Specifically used mode: during coal bed gas well water pumping gas production, for some reason, water flow velocity reduces, and takes coal dust
Ability decline or certain reason cause to stop well, and coal dust settles in water.Using oil pipe of the present invention, coal dust is in infall process
It is connect coal dust sieve cup 4 to accept, when opening well and making production or water flow velocity increase again, the water flow of rising is by connecing coal dust sieve cup
Sieve mesh 5 pulverized coal particle of undertaking is washed away, be carried mined, reach and avoid coal dust in oil pipe bottom deposit
Purpose.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that by all changes in the meaning and scope of the equivalent requirements of the claims
It is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (5)
1. one kind can accept coal dust oil pipe, including oil pipe (1), internal lining pipe (2) and connect coal dust sieve cup (4), it is characterised in that: institute
Stating oil pipe (1) is plain end oil well pipe or heavy wall tubing, and the internal lining pipe (2) is formed by three fan curved metal plate (6) butt welding,
It is described connect coal dust sieve cup (4) and be welded on the inside of arc-shaped plate by conical camber sieve form.The present invention is to insert internal lining pipe (2)
Enter in oil pipe (1) and internal lining pipe (2) and oil pipe (1) be welded in two ends, connects coal dust sieve cup and be distributed on internal lining pipe,
Rim of a cup is upward.
2. internal lining pipe (2) according to claim 1, it is characterised in that: the internal lining pipe (2) is by three fan curved metal plates
(6) side is docked two-by-two, is formed by straight seam welding, corresponding angle of circumference β=120 °.
3. according to claim 1 connect coal dust sieve cup (4), it is characterised in that: the coal dust sieve cup (4) that connects is by taper
Curved surface sieve is welded on arc-shaped plate (6) medial surface and forms, and after arc-shaped plate (6) welding forms tube body, connects pulverized coal sieve
Net cup (4) is staggered in Guan Zhongcheng, and it is upward to connect coal dust sieve cup rim of a cup.
4. according to claim 1 connect coal dust sieve cup (4), it is characterised in that: described coal dust sieve cup (4) shape that connects is
Conical camber.
5. according to claim 1 connect coal dust sieve cup (4), it is characterised in that: the sieve pore of the sieve (5) can be circle
Shape hole or square hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795583.4A CN110513083B (en) | 2019-08-27 | 2019-08-27 | Oil pipe capable of receiving pulverized coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795583.4A CN110513083B (en) | 2019-08-27 | 2019-08-27 | Oil pipe capable of receiving pulverized coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110513083A true CN110513083A (en) | 2019-11-29 |
| CN110513083B CN110513083B (en) | 2021-11-16 |
Family
ID=68628042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910795583.4A Active CN110513083B (en) | 2019-08-27 | 2019-08-27 | Oil pipe capable of receiving pulverized coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513083B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982171Y (en) * | 2006-09-17 | 2007-11-28 | 辽河石油勘探局 | Multi-stage diversion filtering type salvaging cup for workover treatment |
| CN201221342Y (en) * | 2008-07-23 | 2009-04-15 | 詹其国 | Compression-resistant anti-twist high strength V-shaped slot self-cleaning sand-proof screen pipe |
| US20110203791A1 (en) * | 2010-02-22 | 2011-08-25 | Exxonmobil Research And Engineering Company | Coated sleeved oil and gas well production devices |
| US20110297376A1 (en) * | 2010-06-08 | 2011-12-08 | Halliburton Energy Services, Inc. | Sand Control Screen Assembly Having Control Line Capture Capability |
| CN204627440U (en) * | 2015-05-20 | 2015-09-09 | 山东华联矿业股份有限公司 | Possesses the rig airduct of airstrainer |
-
2019
- 2019-08-27 CN CN201910795583.4A patent/CN110513083B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982171Y (en) * | 2006-09-17 | 2007-11-28 | 辽河石油勘探局 | Multi-stage diversion filtering type salvaging cup for workover treatment |
| CN201221342Y (en) * | 2008-07-23 | 2009-04-15 | 詹其国 | Compression-resistant anti-twist high strength V-shaped slot self-cleaning sand-proof screen pipe |
| US20110203791A1 (en) * | 2010-02-22 | 2011-08-25 | Exxonmobil Research And Engineering Company | Coated sleeved oil and gas well production devices |
| US20110297376A1 (en) * | 2010-06-08 | 2011-12-08 | Halliburton Energy Services, Inc. | Sand Control Screen Assembly Having Control Line Capture Capability |
| CN204627440U (en) * | 2015-05-20 | 2015-09-09 | 山东华联矿业股份有限公司 | Possesses the rig airduct of airstrainer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110513083B (en) | 2021-11-16 |
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