CN106437622A - Hydraulic oil pipe scale borer - Google Patents
Hydraulic oil pipe scale borer Download PDFInfo
- Publication number
- CN106437622A CN106437622A CN201611203672.8A CN201611203672A CN106437622A CN 106437622 A CN106437622 A CN 106437622A CN 201611203672 A CN201611203672 A CN 201611203672A CN 106437622 A CN106437622 A CN 106437622A
- Authority
- CN
- China
- Prior art keywords
- core bar
- screw thread
- main body
- scale removal
- joint
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
- E21B37/04—Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
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)
- Crushing And Pulverization Processes (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to hydraulic oil pipe scale borer, including a fishing head (1), a main part (2), a core bar (3), a joint (4), a rubber tube core (5), a rubber tube assembly (6), a bonding body (7), a descaling part (8) and a guide head (9), the outside wall of the descaling part (8) is provided with a number of spiral cutting edges (81), the core bar (3) located on the bar body inside the main part (2) is provided with a number of impellers (31),the side wall of the main part (2) above each impeller (31) is respectively provided with an inlet hole (21), the side wall of the main part (2) below each impeller (31) is respectively provided with an outlet hole (22), the inside wall of the main part (2) below each outlet hole (22) is respectively rotated with the core bar (3) and is closely sealed and coordinated. The scale borer does not have to rely on gravity impact in order to work, and descales with better effect. The spiral descaling mechanism uses hydraulic force to push the spiral scale borer to descale the pipe, and alleviates the difficult job of cleaning up oil pipe scale.
Description
Technical field
The present invention relates to petroleum tool is and in particular to a kind of oilfield oil well oil pipe stain eliminating operation oil pipe stain eliminating device.
Background technology
After oilfield oil well longtime running, pipe inner surface has substantial amounts of greasy dirt, incrustation scale and other fouls.So that pipe
Footpath internal diameter reduces, and causes test, salvaging and other instruments can not pass through, has a strong impact on the carrying out of normal work.Field operations
The drift size gauge tool that personnel are typically with certain diameter carries out drifting to solve this problem, but drift size gauge tool is to rely on gravity punching
Hit and be operated, it is limited that drift size gauge tool is limited impulsive force by weight, often cannot pass through.And harder layer of scale, latus rectum
Rule cannot remove it at all.
Content of the invention
It is an object of the invention to provide one kind is operated not against gravitational thrusts, scale removal effect more preferable hydraulic oil pipe
Descaler.
The technical solution of the present invention is：It includes dragging for head, main body, core bar, joint, packing element core, packing element assembly, connection
Body, scale removal body and guide head, the lower end dragging for head is connected with the top axial of main body by screw thread, and core bar is rotatably installed in main body
And be axially connected with main body, the lower end that core bar is located at below main body is connected with the top axial of joint, under joint by screw thread
End is connected with the top axial of packing element core by screw thread, and de- cylinder assembly is sleeved on packing element core, and screw thread is passed through in the lower end of packing element core
It is connected with the top axial of connector, the upper end of scale removal body is axially connected with the lower end of connector by screw thread, spiral shell is passed through in lower end
Stricture of vagina is connected with the top axial of guide head, the radial hole that the upper end of packing element core centre bore is passed through on joint is connected with outside joint,
Lower end is connected with outside connector with radial hole by the centre bore of connector, and the center in the hole of connector is provided with steel from the top down
Ball and stage clip, steel ball is matched with the lower mouth of packing element core centre bore, and matched with steel ball in the upper end of stage clip, in lower end and connector
The inner face in heart hole matches, and the outer wall of scale removal body is provided with some spiral cutting swords, and core bar is located on the body of rod in main body
Separately it is provided with several from the top down to be fixedly mounted on core bar and be provided with the impeller of helical blade, the main body above each impeller
Inlet opening inside and outside connection main body is respectively equipped with the wall of side, is respectively equipped with the main body wall below each impeller inside and outside connection main body
Apopore, the inlet opening of the upper and lower both sides of each impeller and apopore are connected by the gap between screw between impeller blade, respectively
The main body inner wall of apopore lower position is coordinated with core bar rotary seal respectively.
The solution have the advantages that：It is operated not against gravitational thrusts, and scale removal effect is more preferable.It is using spiral
Scale removal mechanism, makes spiral descaler rotate by waterpower compressing and carries out scale removal, solves oil pipe fouling not easy-clear well
A difficult problem.It is easy for operation, by rotary scraping, the layer of scale in oil pipe is purged, and can quickly remove various dirts
Dirt, by current can also directly by except under dirt wash away, scale removal is cleaner, is more beneficial for continuing downwards scale removal and next step
Work is smoothed out.
Brief description
Fig. 1 is embodiment of the present invention sectional view.
Specific embodiment
As shown in figure 1, it includes dragging for 1, main body 2, core bar 3, joint 4, packing element core 5, packing element assembly 6, a connector 7, removes
Dirty body 8 and guide head 9, are dragged for 1 lower end and are connected with the top axial of main body 2 by screw thread, core bar 3 is rotatably installed in main body 2
Interior and be axially connected with main body 2, the lower end that core bar 3 is located at below main body 2 is connected with the top axial of joint 4 by screw thread, connects
4 lower end is connected with the top axial of packing element core 5 by screw thread, and de- cylinder assembly 6 is sleeved on packing element core 5, under packing element core 5
End is connected with the top axial of connector 7 by screw thread, and the lower end axial direction phase of screw thread and connector 7 is passed through in the upper end of scale removal body 8
Even, lower end is connected with the top axial of guide head 9 by screw thread, and the radial hole on joint 4 is passed through in the upper end of packing element core 5 centre bore
It is connected with outside joint 4, lower end passes through the centre bore of connector 7 and radial hole is connected with outside connector 7, in connector 7
Heart in the hole is provided with steel ball 71 and stage clip 72 from the top down, and steel ball 71 is matched with the lower mouth of packing element core 5 centre bore, stage clip 72 upper
Being matched with steel ball 71 in end, is matched with the inner face of connector 7 centre bore in lower end, and the outer wall of scale removal body 8 is provided with some
Spiral cutting sword 81, core bar 3 is separately provided with several from the top down on the body of rod in main body 2 and is fixedly mounted on core bar 3
Go up and be provided with the impeller 31 of helical blade, the main body 2 side wall of each impeller 31 top is respectively equipped with the water inlet inside and outside connection main body 2
Apopore 22 inside and outside connection main body 2 is respectively equipped with hole 21, the main body 2 side wall of each impeller 31 lower section, each impeller is about 31
The inlet opening 21 of both sides and apopore 22 are connected by the gap between screw between impeller 31 blade, each apopore 22 lower position
Main body 2 inwall respectively with core bar 3 rotary seal coordinate.
Main body 2 by top connection 23, upper joint sleeve 24, upper short circuit 25, middle adapter sleeve 26, lower short circuit 27, lower joint sleeve 28, under
Joint 29 and lower nut 30 are constituted, and the upper end of top connection 23 is passed through screw thread and is axially connected with the lower end dragging for 1, lower end is by screw thread
Be connected with the top axial of upper joint sleeve 24, the upper end of upper short circuit 25 pass through screw thread be axially connected with the lower end of upper joint sleeve 24,
Lower end is connected with the top axial of middle adapter sleeve 26 by screw thread, and the upper end of lower short circuit 27 is passed through under screw thread and middle adapter sleeve 26
End is axially connected, lower end is connected with the top axial of lower joint sleeve 28 by screw thread, the upper end of lower contact 29 by screw thread and under
The lower end of adapter sleeve 28 is axially connected, lower end is connected with the top axial of lower nut 30 by screw thread.Each inlet opening in main body 2
21 and apopore 22 be respectively arranged on the side wall of upper joint sleeve 24, middle adapter sleeve 26 and lower joint sleeve 28, upper short circuit 25, lower short circuit
27 and lower contact 29 upper end respectively with core bar 3 rotary seal coordinate.
Core bar 3 is made up of upper core bar 32 and lower core bar 33, and the upper end of upper core bar 32 is provided with positioned at top connection by screw thread
Standby cap 34 in 23, upper core bar 32 be provided with below standby cap 34 be sleeved on upper in top connection 23 on upper core bar 32
Spacer 35, the lower section of upper spacer 35 is set with the upper bearing (metal) 36 being arranged in female connector 24, and the lower section of upper bearing (metal) 36 is provided with position
It is sleeved on the spacer ring 37 with upper core bar 32 rotary seal cooperation on upper core bar 32 in upper joint sleeve 24, each impeller 31 is alternate respectively
Every being arranged on upper core bar 32 and be located at respectively upper joint sleeve 24, in middle adapter sleeve 26 and lower joint sleeve 28, lower core bar 33 upper
End is axially connected with the lower end of upper core bar 32 by screw thread, lower end is connected with the top axial of joint 4 by screw thread, lower core bar 33
Coordinated by be connected with upper core bar 32 lower section and lower contact 29 rotary seal of position of screw thread, lower core bar 33 and 29 turns of lower contact
The lower section of dynamic sealing cooperation position is set with the lower bearing 38 being arranged in lower contact 29, and the lower section of lower bearing 38 is provided with and is located at down
It is sleeved on lower spacer 39, the upper end of lower spacer 39 and lower axle with lower nut 30 rotary seal cooperation on lower core bar 33 in nut 30
Hold that 38 inner rings match, matched with the upper surface of joint 4 in lower end.
Spacer ring 37 and upper joint sleeve 24 mutually seal the inwall of the sealing cooperation that rotates on the outer wall of cooperation with upper core bar 32
On be respectively equipped with seal groove and be separately installed with sealing ring 10.Upper short circuit 25 and upper joint sleeve 24 mutually seal on the outer wall of cooperation
And be respectively equipped with seal groove on the inwall of the sealing cooperation that rotates with upper core bar 32 and be separately installed with sealing ring 10, lower short circuit
27 mutually seal on the outer wall of cooperation with middle adapter sleeve 26 and the inwall of the sealing cooperation that rotates with upper core bar 32 on be respectively equipped with close
Seal groove is simultaneously separately installed with sealing ring 10, lower contact 29 and lower joint sleeve 28 mutually seal on the outer wall of cooperation and with lower core bar 33
It is respectively equipped with seal groove on the inwall that the sealing that rotates coordinates and be separately installed with sealing ring 10.Lower nut 30 pass through screw thread with
Lower contact 29 outer wall being matched with lower contact 29 above position that is connected is provided with seal groove and is provided with sealing ring 10.Under
Spacer 39 and lower nut 30 are rotated to seal on the outer wall coordinating and mutually sealed with lower core bar 33 and are respectively equipped with the inwall of cooperation
Seal groove is simultaneously provided with sealing ring 10.
Packing element assembly 6 is by the upper packing element 61 being sleeved on successively from the top down on packing element core 5, dottle pin 62 and lower rubber cylinder 63 structure
Become.
Scale removal body 8 is made up of upper scale removal body 82, short circuit 83 and lower scale removal body 84, the upper end of upper scale removal body 82 pass through screw thread with
The lower end of connector 7 is axially connected, lower end is connected with the top axial of short circuit 83 by screw thread, and the upper end of lower scale removal body 84 is passed through
Screw thread is axially connected with the lower end of short circuit 83, lower end is connected with the top axial of guide head 9 by screw thread.The spiral shell of upper scale removal body 82
Rotation cutting edge 81 periphery upper and lower external diameter is identical, and the periphery of lower scale removal body 84 spiral cutting sword 81 is upper coarse and lower fine cone-shaped.On
Several high rigidity cutting blades 85 are respectively equipped with the spiral cutting sword 81 of scale removal body 82 and lower scale removal body 84.
Each part is respectively equipped with by being threadably mounted on interior threaded part by the position that screw thread is connected, end is with outward
The steady nail that screwed part matches.
Operation principle：Connected by the steel wire rope of winch wire on well and drag for 1 this descaler is put into the pre- scale removal in down-hole oil
Guan Hou, the inlet opening 21 that the High-Pressure Water of input passes through in main body 2 from well enters main body 2, after promoting each impeller 31 to rotate from
Apopore 22 flows out, then promotes next impeller 31 to rotate, and each impeller 31 rotates and drives core bar 3 to rotate, and core bar 3 passes through joint 4, glue
Tube filler 5 and connector 7 drive scale removal body 8 to rotate, thus the fouling in oil pipe is scraped away.Current pass through the radial direction on joint 4
Hole is flow through compressing steel ball 71 and stage clip 72 from the centre bore of packing element core 5 and is flowed out from the centre bore of connector 7 and radial hole, downwards will
The fouling being scraped away by scale removal body is flushed to down-hole and removes.Steel ball 71 on connector 7 and stage clip 72 have non-return effect, can in case
Only gush on down-hole pressure.
Claims (10)
1. hydraulic oil pipe stain eliminating device, it includes dragging for head（1）, main body（2）, core bar（3）, joint（4）, packing element core（5）, packing element total
Become（6）, connector（7）, scale removal body（8）And guide head（9）, drag for head（1）Lower end pass through screw thread and main body（2）Top axial
It is connected, core bar（3）It is rotatably installed in main body（2）Interior and and main body（2）Axially it is connected, core bar（3）Positioned at main body（2）Under lower section
Screw thread and joint are passed through in end（4）Top axial be connected, joint（4）Lower end pass through screw thread and packing element core（5）Top axial
It is connected, de- cylinder assembly（6）It is sleeved on packing element core（5）On, packing element core（5）Lower end pass through screw thread and connector（7）Upper shaft
To connected, scale removal body（8）Upper end pass through screw thread and connector（7）Lower end be axially connected, screw thread and guide head are passed through in lower end
（9）Top axial be connected, packing element core（5）Joint is passed through in the upper end of centre bore（4）On radial hole and joint（4）It is connected outward
Connector is passed through in logical, lower end（7）Centre bore and radial hole and connector（7）It is connected outward, connector（7）Center in the hole from
On to having steel ball（71）And stage clip（72）, steel ball（71）With packing element core（5）The lower mouth of centre bore matches, stage clip（72）'s
Upper end and steel ball（71）Match, lower end and connector（7）The inner face of centre bore match it is characterised in that：Scale removal body（8）
Outer wall be provided with some spiral cutting swords（81）, core bar（3）Positioned at main body（2）Separately set from the top down on the interior body of rod
Several are had to be fixedly mounted on core bar（3）Go up and be provided with the impeller of helical blade（31）, each impeller（31）The main body of top（2）Side
Connection main body is respectively equipped with wall（2）Inside and outside inlet opening（21）, each impeller（31）The main body of lower section（2）It is respectively equipped with the wall of side
Connection main body（2）Inside and outside apopore（22）, each impeller（31）The inlet opening of both sides up and down（21）And apopore（22）Pass through
Impeller（31）Gap between screw between blade is connected, each apopore（22）The main body of lower position（2）Inwall respectively with core bar
（3）Rotary seal coordinates.
2. hydraulic oil pipe stain eliminating device as claimed in claim 1 is it is characterised in that described main body（2）By top connection（23）、
Upper joint sleeve（24）, upper short circuit（25）, middle adapter sleeve（26）, lower short circuit（27）, lower joint sleeve（28）, lower contact（29）With lower spiral shell
Cap（30）Constitute, top connection（23）Upper end pass through screw thread and drag for head（1）Lower end be axially connected, screw thread and upper company are passed through in lower end
Female connector（24）Top axial be connected, upper short circuit（25）Upper end pass through screw thread and upper joint sleeve（24）Lower end be axially connected,
Screw thread and middle adapter sleeve are passed through in lower end（26）Top axial be connected, lower short circuit（27）Upper end pass through screw thread and middle adapter sleeve
（26）Lower end be axially connected, screw thread and lower joint sleeve are passed through in lower end（28）Top axial be connected, lower contact（29）Upper end
By screw thread and lower joint sleeve（28）Lower end be axially connected, screw thread and lower nut are passed through in lower end（30）Top axial be connected.
3. hydraulic oil pipe stain eliminating device as claimed in claim 2 is it is characterised in that described main body（2）On each inlet opening
（21）And apopore（22）It is respectively arranged on upper joint sleeve（24）, middle adapter sleeve（26）And lower joint sleeve（28）Side wall on, upper short
Connect（25）, lower short circuit（27）And lower contact（29）Upper end respectively with core bar（3）Rotary seal coordinates.
4. hydraulic oil pipe stain eliminating device as claimed in claim 2 is it is characterised in that described core bar（3）By upper core bar（32）With
Lower core bar（33）Constitute, upper core bar（32）Upper end be provided with positioned at top connection by screw thread（23）Interior standby cap（34）, upper core
Bar（32）It is provided with positioned at standby cap（34）Lower section is sleeved on core bar（32）On positioned at top connection（23）Interior upper spacer（35）,
Upper spacer（35）Lower section be set with and be arranged on female connector（24）Interior upper bearing (metal)（36）, upper bearing (metal)（36）Lower section be provided with position
In upper joint sleeve（24）Inside it is sleeved on core bar（32）Above with upper core bar（32）The spacer ring of rotary seal cooperation（37）, each impeller
（31）Separately it is arranged on core bar respectively（32）It is located above and respectively upper joint sleeve（24）, middle adapter sleeve（26）And lower joint sleeve
（28）Interior, lower core bar（33）Upper end pass through screw thread and upper core bar（32）Lower end be axially connected, screw thread and joint are passed through in lower end
（4）Top axial be connected, lower core bar（33）By screw thread and upper core bar（32）Be connected the lower section of position and lower contact（29）
Rotary seal coordinates, lower core bar（33）With lower contact（29）The lower section of rotary seal cooperation position is set with and is arranged on lower contact
（29）Interior lower bearing（38）, lower bearing（38）Lower section be provided with positioned at lower nut（30）Inside it is sleeved on lower core bar（33）Upper with
Nut（30）The lower spacer of rotary seal cooperation（39）, lower spacer（39）Upper end and lower bearing（38）Inner ring matches, lower end
With joint（4）Upper surface match.
5. hydraulic oil pipe stain eliminating device as claimed in claim 4 is it is characterised in that described spacer ring（37）With upper joint sleeve
（24）Mutually seal on the outer wall of cooperation and with upper core bar（32）It is respectively equipped with seal groove simultaneously on the inwall that the sealing that rotates coordinates
It is separately installed with sealing ring（10）.
6. hydraulic oil pipe stain eliminating device as claimed in claim 4 is it is characterised in that described upper short circuit（25）With upper joint sleeve
（24）Mutually seal on the outer wall of cooperation and with upper core bar（32）It is respectively equipped with seal groove simultaneously on the inwall that the sealing that rotates coordinates
It is separately installed with sealing ring（10）, lower short circuit（27）With middle adapter sleeve（26）Mutually seal on the outer wall of cooperation and with upper core bar（32）
It is respectively equipped with seal groove on the inwall that the sealing that rotates coordinates and be separately installed with sealing ring（10）, lower contact（29）With lower company
Female connector（28）Mutually seal on the outer wall of cooperation and with lower core bar（33）It is respectively equipped with sealing ring on the inwall that the sealing that rotates coordinates
Groove is simultaneously separately installed with sealing ring（10）.
7. hydraulic oil pipe stain eliminating device as claimed in claim 4 is it is characterised in that described lower nut（30）By screw thread with
Lower contact（29）It is connected above position and lower contact（29）The outer wall matching is provided with seal groove and is provided with sealing ring
（10）, lower spacer（39）With lower nut（30）Rotate sealing cooperation outer wall on and with lower core bar（33）Mutually seal the interior of cooperation
Seal groove is respectively equipped with wall and sealing ring is installed（10）.
8. hydraulic oil pipe stain eliminating device as claimed in claim 1 is it is characterised in that described packing element assembly（6）By from the top down
It is sleeved on packing element core successively（5）On upper packing element（61）, dottle pin（62）And lower rubber cylinder（63）Constitute.
9. hydraulic oil pipe stain eliminating device as claimed in claim 1 is it is characterised in that described scale removal body（8）By upper scale removal body
（82）, short circuit（83）With lower scale removal body（84）Constitute, upper scale removal body（82）Upper end pass through screw thread and connector（7）Lower end axle
Pass through screw thread and short circuit to connected, lower end（83）Top axial be connected, lower scale removal body（84）Upper end pass through screw thread and short circuit
（83）Lower end be axially connected, screw thread and guide head are passed through in lower end（9）Top axial be connected.
10. hydraulic oil pipe stain eliminating device as claimed in claim 9 is it is characterised in that described upper scale removal body（82）Spiral cut
Cut sword（81）The upper and lower external diameter in periphery is identical, lower scale removal body（84）Spiral cutting sword（81）Periphery be upper coarse and lower fine cone-shaped,
Upper scale removal body（82）With lower scale removal body（84）Spiral cutting sword（81）On be respectively equipped with several high rigidity cutting blades（85）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611203672.8A CN106437622B (en) | 2016-12-23 | 2016-12-23 | Hydraulic oil pipe stain eliminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611203672.8A CN106437622B (en) | 2016-12-23 | 2016-12-23 | Hydraulic oil pipe stain eliminating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106437622A true CN106437622A (en) | 2017-02-22 |
| CN106437622B CN106437622B (en) | 2019-01-04 |
Family
ID=58215376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611203672.8A Active CN106437622B (en) | 2016-12-23 | 2016-12-23 | Hydraulic oil pipe stain eliminating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437622B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577918A (en) * | 2019-01-03 | 2019-04-05 | 中国石油集团长城钻探工程有限公司 | Paraffin removal from oil well apparatus for eliminating sludge |
| CN111379540A (en) * | 2018-12-29 | 2020-07-07 | 中国石油天然气股份有限公司 | Mechanical pipe-dredging tool for oil-water well |
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| US6808019B1 (en) * | 2002-09-06 | 2004-10-26 | John F. Mabry | Sucker rod guide and paraffin scraper for oil wells |
| CN101988377A (en) * | 2009-08-04 | 2011-03-23 | 中国石化集团胜利石油管理局钻井工艺研究院 | Energy storage type salvageable underground hydraulic impulse tool |
| CN104100231A (en) * | 2014-07-22 | 2014-10-15 | 西南石油大学 | Automatic descaling device and method for shafts |
| CN204371209U (en) * | 2014-12-31 | 2015-06-03 | 牡丹江博实石油机械科技有限公司 | Salvagable oil pipe stain eliminating blanking plug |
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| CN206352500U (en) * | 2016-12-23 | 2017-07-25 | 牡丹江博实石油机械科技有限公司 | Hydraulic oil pipe stain eliminating device |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6808019B1 (en) * | 2002-09-06 | 2004-10-26 | John F. Mabry | Sucker rod guide and paraffin scraper for oil wells |
| CN101988377A (en) * | 2009-08-04 | 2011-03-23 | 中国石化集团胜利石油管理局钻井工艺研究院 | Energy storage type salvageable underground hydraulic impulse tool |
| CN104100231A (en) * | 2014-07-22 | 2014-10-15 | 西南石油大学 | Automatic descaling device and method for shafts |
| CN204371209U (en) * | 2014-12-31 | 2015-06-03 | 牡丹江博实石油机械科技有限公司 | Salvagable oil pipe stain eliminating blanking plug |
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| CN206352500U (en) * | 2016-12-23 | 2017-07-25 | 牡丹江博实石油机械科技有限公司 | Hydraulic oil pipe stain eliminating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379540A (en) * | 2018-12-29 | 2020-07-07 | 中国石油天然气股份有限公司 | Mechanical pipe-dredging tool for oil-water well |
| CN111379540B (en) * | 2018-12-29 | 2021-11-30 | 中国石油天然气股份有限公司 | Mechanical pipe-dredging tool for oil-water well |
| CN109577918A (en) * | 2019-01-03 | 2019-04-05 | 中国石油集团长城钻探工程有限公司 | Paraffin removal from oil well apparatus for eliminating sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106437622B (en) | 2019-01-04 |
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