CN107091073A - A kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument - Google Patents
A kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument Download PDFInfo
- Publication number
- CN107091073A CN107091073A CN201710508169.1A CN201710508169A CN107091073A CN 107091073 A CN107091073 A CN 107091073A CN 201710508169 A CN201710508169 A CN 201710508169A CN 107091073 A CN107091073 A CN 107091073A
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- Prior art keywords
- clutch shaft
- clutch
- cam
- guide pipe
- flat
- 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
- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 9
- 230000009711 regulatory function Effects 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 241001400675 Sympodium Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument, the present invention is a piece clutch shaft of setting in downhole measurement adjusting instrument, clutch shaft can only be rotated in downhole measurement adjusting instrument, the top of clutch shaft is provided with the flat hole in top being connected with the flat axle in drive shaft bottom, clutch shaft bottom is provided with the flat axle in bottom being slidably connected with the flat hole in adjustment axis top, and clutch shaft stage casing is provided with the flat axle in stage casing being connected with cam clutch；Clutch shaft constitutes clutch connection structure by the flat hole on the flat axle in stage casing and cam, when clutch shaft is in bonding state, opens or shrinks by cam driven registration arm；When clutch shaft is in released state；Clutch shaft only drives the adjustment axis of bottom to rotate, and completes the regulation to injection well downhole flow regulator；Registration arm actuate action and the regulatory function of regulating arm is independent of each other.The present invention is simple to operate using being slidably matched, and is difficult sand card.
Description
Technical field
The present invention relates to a kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument, belong to downhole instrument structure technology neck
Domain.
Background technology
In order to shorten whole length, reduction processing and manufacturing cost and the reliability for improving instrument, downhole instrument is generally used
Single motor realizes many holding functions, and synchronous perform, it is necessary to separately be grasped using clutch is tended not between acting more
Make.At present, the clutch Technical comparing that actuates of control single armed is ripe, and the arrangement of clutch for controlling both arms to actuate is less, on the market compared with
To be common for screw thread arrangement of clutch, and not only structure is more complicated for screw thread clutch, and has that screw buckle is easy to wear, damages and meets
The defect that sand easily blocks.
The content of the invention
It is an object of the present invention to provide downhole measurement adjusting instrument that is a kind of simple in construction, easy to operate and being difficult sand card
Slide engaging and disengaging method and device, to overcome the deficiencies in the prior art.
The technical proposal of the invention is realized in this way：
A kind of slide engaging and disengaging method of downhole measurement adjusting instrument of the present invention, this method is a piece clutch of setting in downhole measurement adjusting instrument
Axle；Clutch shaft top is connected by the flat axle in the bottom in the flat hole in top and drive shaft, clutch shaft bottom by the flat axle in bottom with
The flat hole drive connection in top of adjustment axis, clutch shaft stage casing is provided with the flat axle in stage casing being connected with cam clutch；The flat axle in stage casing with it is convex
Flat hole on wheel constitutes clutch connection structure；Clutch shaft is in bonding state, and registration arm with cam before downhole measurement adjusting instrument is gone into the well
It is contracted in bearing；After downhole measurement adjusting instrument is transferred to downhole tool position, open registration arm by drive shaft, when what is opened
When registration arm is seated in the support platform of downhole tool, registration arm can not continue to move down, and in descending inertia force and instrument weight
In the presence of power, clutch shaft makes the flat axle in the stage casing on clutch shaft be skidded off from the flat hole of cam, clutch in folding process is continued
Leave state is between axle and cam, while the spring being enclosed on outside clutch produces compression；Therefore the rotation of clutch shaft
On registration arm without influence, clutch shaft only drives the adjustment axis of bottom to rotate, and completes the regulation to injection well downhole flow regulator；When completion is to injection well downhole flow regulator
Regulation after, above carry downhole measurement adjusting instrument, lose the spring reset elongation of Action of Gravity Field, drive clutch shaft opposing cam to moving down
It is dynamic, make the flat axle in stage casing of clutch shaft slip into the flat hole of cam again and be in bonding state, and pass through drive shaft to drive registration arm to receive
It is reduced in bearing, you can carry out next regulation process；Registration arm actuate action and the regulatory function of regulating arm is independent of each other.
In preceding method, guide pipe is cased with outside the clutch shaft epimere, spring, connection are provided between clutch shaft and guide pipe
It is slidably connected between pipe and guide pipe；Guide pipe maximum external cylindrical surface is provided with gas pressure relief slot；By gas pressure relief slot pressure release during clutch, and
Prevent sand card；Clutch shaft is provided with seal with O ring device with driving between centers.
In preceding method, the guide pipe is provided with stopping means, and restricted guidance pipe is rotated, and guide pipe is axially slided
It is dynamic.
A kind of slide engaging and disengaging device of the downhole measurement adjusting instrument of the invention built according to the above method, including guide pipe, lead
Clutch shaft is provided with into pipe, spring is provided between clutch shaft and guide pipe；Clutch shaft top is connected with drive shaft, drive shaft
Seal with O ring device is provided with clutch between centers, guide pipe is externally provided with connecting tube, is slidably connected between connecting tube and guide pipe, bearing
The interior flat axle clutch connection in the stage casing in flat hole and clutch shaft being provided with cam, cam；Bearing is provided with the positioning being uniformly distributed along the circumference
Arm, registration arm is hinged with bearing, and registration arm upper end and the cylindrical of cam are slidably connected；The flat axle in bottom of clutch shaft and adjustment axis top
The flat hole at end is slidably connected, and adjustment axis bottom is connected with regulating arm.
In aforementioned means, the maximum external cylindrical surface of the guide pipe is provided with gas pressure relief slot.
In aforementioned means, the guide pipe is provided with stopping means.
By adopting the above-described technical solution, the present invention is compared with prior art, the present invention is on the basis of simple in construction
Reliability when can realize that both arms are actuated and regulatory function, and be independent of each other, work between each action is high；When engagement and disengagement,
Drive shaft, clutch shaft and adjustment axis are rotated together all the time；When clutch shaft is with cam-engaged, cam rotation simultaneously drives then registration arm receipts
；When clutch shaft is disengaged with cam, clutch shaft rotates then registration arm and is failure to actuate；Clutch disengages real using instrument deadweight and inertia force
Existing, clutch shaft is realized with cam-engaged by spring.It is to be slidably matched during clutch, between clutch shaft and each structure；Regulation
To be slidably matched during clutch between axle and clutch shaft；To be slidably matched during clutch between cam and clutch shaft；
Also to be slidably matched during clutch between guide pipe and connecting tube.Guide pipe is provided with gas pressure relief slot, pressure release during for clutch
And sands-proof check；During clutch, coordinate as a result of being slidably matched, and between each sliding surface for gap, can effectively prevent sand card.
The slide engaging and disengaging device of the present invention is applied to the clutch structure of oil field well instrument, is also applied for the clutch structure of Other Instruments.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of the disengaged position of clutch shaft and cam；
Fig. 3 is the structural representation of gas pressure relief slot and stopping means.
In figure：1- regulating arms, 2- adjustment axis, 3- clutch shafts, 4- registration arm, 5- bearings, 6- cams, 7- guide pipes, 8- connect
Adapter, 9- springs, 10- control shafts, 11- gas pressure relief slots, the flat hole in 12- tops, the flat axle in 13- bottoms, the flat axle in 14- stage casings, the flat holes of 15-,
16- stopping means.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, but not as to any of the present invention
Limitation.
The present invention a kind of downhole measurement adjusting instrument slide engaging and disengaging method, this method be in downhole measurement adjusting instrument set one from
Sympodium；Clutch shaft top is connected by the flat axle in bottom in the flat hole in top and drive shaft, and clutch shaft bottom passes through the flat axle in bottom
It is connected with the flat hole in top of adjustment axis, clutch shaft stage casing is provided with the flat axle in stage casing being connected with cam clutch；The flat axle in stage casing with
Flat hole on cam constitutes clutch connection structure；Clutch shaft is in bonding state, and positioning with cam before downhole measurement adjusting instrument is gone into the well
Arm is contracted in bearing；After downhole measurement adjusting instrument is transferred to downhole tool position, registration arm is opened by drive shaft, when opening
Registration arm when being seated in the support platform of downhole tool, registration arm can not continue to move down, and in descending inertia force and instrument
In the presence of gravity, clutch shaft makes the flat axle in the stage casing on clutch shaft be skidded off from the flat hole of cam in folding process is continued, from
Leave state is between sympodium and cam, while the spring being enclosed on outside clutch produces compression；Therefore turn of clutch shaft
Move on registration arm without influence, clutch shaft only drives the adjustment axis of bottom to rotate, complete the regulation to injection well downhole flow regulator；When completion is to water distribution
After the regulation of device, downhole measurement adjusting instrument is above carried, the spring reset elongation of Action of Gravity Field is lost, drives clutch shaft opposing cam to moving down
It is dynamic, make the flat axle in stage casing of clutch shaft slip into the flat hole of cam again and be in bonding state, and pass through drive shaft to drive registration arm to receive
It is reduced in bearing, you can carry out next regulation process；Registration arm actuate action and the regulatory function of regulating arm is independent of each other.
Guide pipe is cased with outside clutch shaft epimere, spring is provided between clutch shaft and guide pipe, is slidably connected between connecting tube and guide pipe；
Guide pipe maximum external cylindrical surface is provided with gas pressure relief slot；By gas pressure relief slot pressure release during clutch, and prevent sand card；Clutch shaft and drive shaft
Between be provided with seal with O ring device.Guide pipe is provided with stopping means, and restricted guidance pipe is rotated, and guide pipe is slid axially.
A kind of slide engaging and disengaging device of the downhole measurement adjusting instrument of the invention built according to the above method, as Figure 1-3, should
Device includes being provided with clutch shaft 3 in guide pipe 7, guide pipe 7, and spring 9 is provided between clutch shaft 3 and guide pipe 7；Clutch shaft 3 is pushed up
End is connected with drive shaft 10, and seal with O ring device is provided between drive shaft 10 and clutch shaft 3, and guide pipe 7 is externally provided with connecting tube
8, it is slidably connected between connecting tube 8 and guide pipe 7, the flat hole and the stage casing of clutch shaft 3 being provided with bearing 5 on cam 6, cam 6 are flat
The clutch connection of axle 14；Bearing 5 is provided with the registration arm 4 that is uniformly distributed along the circumference, and registration arm 4 is hinged with bearing 5, the upper end of registration arm 4 and
The cylindrical of cam 6 is slidably connected；The flat axle 13 in bottom of clutch shaft 3 and the flat hole on the top of adjustment axis 2 are slidably connected, the bottom of adjustment axis 2
End is connected with regulating arm 1.The maximum external cylindrical surface of guide pipe 7 is provided with gas pressure relief slot 11.Guide pipe 7 is provided with stopping means
12。
Embodiment
As Figure 1-3, adjustment axis 2 is connected this example equipment therefor with regulating arm 1, and adjustment axis 2 rotates then 1 turn of regulating arm
It is dynamic.The upper end of adjustment axis 2 is machined with flat hole, and the lower end of clutch shaft 3 is machined with flat axle, and the flat axle of the lower end of clutch shaft 3 can be in adjustment axis 2
Flat hole in slide, and clutch shaft 3 rotated, and adjustment axis 2 is rotated.Spikes/low- points are machined with cam 6, when cam 6 is rotated
When, registration arm 4 can be actuated.Flat hole is machined with the middle of cam 6, the centre position of clutch shaft 3 is machined with the flat hole that flat axle can be with cam 6
Coordinate, when cam 6 is axially moved up to extreme position, the flat hole on cam 6 is separated with the flat axle on clutch shaft 3, now clutch
Axle 3 is rotated and cam 6 is not rotated, but regulating arm 1 is rotatable；When cam 6 is moved to lower limit position, the flat hole on cam 6
Engaged with the flat axle on clutch shaft 3, now clutch shaft 3 is rotated, then cam 6 is rotated, so as to realize that registration arm 4 is actuated.Bearing 5 is used
In stationary positioned arm 4, guide pipe 7 is connected through a screw thread with bearing 5, is machined with gas pressure relief slot on the maximum external cylindrical surface of guide pipe 7, is used
Pressure release and sands-proof check when clutch is disengaged.Guide pipe 7 can be slided in connecting tube 8, and position limiting structure is machined with guide pipe 7, only
It can slide axially, it is impossible to rotate.Spring 9 is enclosed between clutch shaft 3 and guide pipe 7, plays a part of clutch reset.
The course of work and principle of the present invention
The whole mechanism of the present invention is so operated：Just start registration arm 4 to be drawn in, on the flat axle on clutch shaft 3 and cam 6
Flat hole be in engagement.After under instrument to underground, drive shaft 10 is rotated, then drives clutch shaft 3 to rotate, the band of clutch shaft 3
Moving cam 6 is rotated, and after registration arm 4 is opened completely, drive shaft 10 stops operating.Now decentralization instrument goes to sit downhole tool, fixed
Position arm 4 take after downhole tool, in the presence of inertia force and instrument gravity, regulating arm 1, adjustment axis 2, registration arm 4, bearing 5,
Cam 6 and guide pipe 7 are moved to right together, while spring 9 is compressed, now flat hole is separated with the flat axle on clutch shaft 3 in cam 6,
Clutch is disengaged, and now rotates adjustment axis 2, and cam 6 is not rotated, and regulating arm 1 is rotatable, realizes regulatory function；When instrument is carried
After getting up, rotate adjustment axis 2, clutch shaft 3 also rotates together, when in cam 6 flat hole and the flat axle on clutch shaft 3 to it is upper when,
Under the elastic force of spring 9, flat hole is engaged with the flat axle on clutch shaft 3 in cam 6, clutch engagement, is now rotated further adjustment axis 2,
Cam 6 is also rotated together, and when registration arm 4 is drawn in completely, adjustment axis 2 stops operating, and realizes the function that both arms are drawn in.
By adopting the above-described technical solution, the slide engaging and disengaging device of the present invention has the characteristics that：It can realize that both arms are received
Open and be independent of each other between regulatory function, and each action；When clutch is engaged and disengaged, drive shaft, clutch shaft and adjustment axis all the time one
Rise and rotate, and drive regulating arm rotation to realize regulatory function；When clutch shaft is with cam-engaged, cam rotation simultaneously drives then registration arm
Actuate；When clutch shaft is disengaged with cam, clutch shaft rotates then registration arm and is failure to actuate；Clutch is disengaged using instrument deadweight and inertia force
Realize, clutch shaft is realized with cam-engaged by spring.It is to be slidably matched during clutch, between clutch shaft and each structure；Adjust
To be slidably matched during clutch between nodal axisn and clutch shaft；Match somebody with somebody between cam and clutch shaft during clutch for slip
Close；Also to be slidably matched during clutch between guide pipe and connecting tube.Guide pipe is provided with gas pressure relief slot, is let out during for clutch
Pressure and sands-proof check；During clutch, coordinate as a result of being slidably matched, and between each sliding surface for gap, can effectively prevent sand
Card.The slide engaging and disengaging device of the present invention is applied to the clutch structure of oil field well instrument, is also applied for the clutch knot of Other Instruments
Structure.
Claims (6)
1. a kind of slide engaging and disengaging method of downhole measurement adjusting instrument, it is characterised in that：This method is that one is set in downhole measurement adjusting instrument
Clutch shaft；Clutch shaft top is connected by the flat axle in bottom in the flat hole in top and drive shaft, and clutch shaft bottom is flat by bottom
The flat hole drive connection in top of axle and adjustment axis, clutch shaft stage casing is provided with the flat axle in stage casing being connected with cam clutch；The flat axle in stage casing
Clutch connection structure is constituted with the flat hole on cam；Clutch shaft is in bonding state with cam before downhole measurement adjusting instrument is gone into the well, and fixed
Position arm is contracted in bearing；After downhole measurement adjusting instrument is transferred to downhole tool position, registration arm is opened by drive shaft, when
When the registration arm opened is seated in the support platform of downhole tool, registration arm can not continue to move down, and in descending inertia force and instrument
Think highly of in the presence of power, clutch shaft makes the flat axle in the stage casing on clutch shaft be skidded off from the flat hole of cam in folding process is continued,
Leave state is between clutch shaft and cam, while the spring being enclosed on outside clutch produces compression；Therefore clutch shaft
Rotate on registration arm without influence, clutch shaft only drives the adjustment axis of bottom to rotate, complete the regulation to injection well downhole flow regulator；When complete to
After the regulation of hydrophone, downhole measurement adjusting instrument is above carried, the spring reset elongation of Action of Gravity Field is lost, drives clutch shaft opposing cam downward
It is mobile, the flat axle in stage casing of clutch shaft is slipped into the flat hole of cam again and be in bonding state, and registration arm is driven by drive shaft
It is contracted in bearing, you can carry out next regulation process；Registration arm actuates action and the regulatory function of regulating arm mutually not shadow
Ring.
2. method according to claim 1, it is characterised in that：Guide pipe is cased with outside the clutch shaft epimere, clutch shaft is with leading
To spring is provided between pipe, it is slidably connected between connecting tube and guide pipe；Guide pipe maximum external cylindrical surface is provided with gas pressure relief slot；From
By gas pressure relief slot pressure release during conjunction, and prevent sand card；Clutch shaft is provided with seal with O ring device with driving between centers.
3. method according to claim 2, it is characterised in that：The guide pipe is provided with stopping means, and restricted guidance pipe turns
It is dynamic, guide pipe is slid axially.
4. a kind of slide engaging and disengaging device of the downhole measurement adjusting instrument built according to claim 1-3 any claims methods described,
Including guide pipe（7）, it is characterised in that：Guide pipe（7）It is interior to be provided with clutch shaft（3）, clutch shaft（3）With guide pipe（7）Between set
There is spring（9）；Clutch shaft（3）Top and drive shaft（10）Drive connection, drive shaft（10）With clutch shaft（3）Between be provided with O-ring
Sealing device, guide pipe（7）It is externally provided with connecting tube（8）, connecting tube（8）With guide pipe（7）Between be slidably connected, bearing（5）Inside set
There is cam（6）, cam（6）On flat hole and clutch shaft（3）The flat axle in stage casing（14）Clutch connection；Bearing（5）It is provided with along circle
Zhou Junbu registration arm（4）, registration arm（4）With bearing（5）It is hinged, registration arm（4）Upper end and cam（6）Cylindrical slip connect
Connect；Clutch shaft（3）The flat axle in bottom（13）With adjustment axis（2）The flat hole on top is slidably connected, adjustment axis（2）Bottom and regulating arm
（1）Drive connection.
5. claim 4 described device, it is characterised in that：The guide pipe（7）Maximum external cylindrical surface is provided with gas pressure relief slot（11）.
6. claim 4 described device, it is characterised in that：The guide pipe（7）It is provided with stopping means（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508169.1A CN107091073A (en) | 2017-06-28 | 2017-06-28 | A kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508169.1A CN107091073A (en) | 2017-06-28 | 2017-06-28 | A kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091073A true CN107091073A (en) | 2017-08-25 |
Family
ID=59641538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508169.1A Pending CN107091073A (en) | 2017-06-28 | 2017-06-28 | A kind of slide engaging and disengaging method and device of downhole measurement adjusting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091073A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842347A (en) * | 2017-12-05 | 2018-03-27 | 中国石油天然气股份有限公司 | For testing the automatic setting mechanism of envelope measurement and adjustment instrument with one heart and testing envelope measurement and adjustment instrument with one heart |
| CN110107239A (en) * | 2018-12-27 | 2019-08-09 | 贵州航天凯山石油仪器有限公司 | A kind of downhole instrument locating detent actuates structure |
| CN110863799A (en) * | 2019-12-11 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Electric descaling method and device for oil field water injection well |
| CN110984928A (en) * | 2019-12-16 | 2020-04-10 | 东北石油大学 | Underground positioning adjusting arm |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842347A (en) * | 2017-12-05 | 2018-03-27 | 中国石油天然气股份有限公司 | For testing the automatic setting mechanism of envelope measurement and adjustment instrument with one heart and testing envelope measurement and adjustment instrument with one heart |
| CN107842347B (en) * | 2017-12-05 | 2021-04-30 | 中国石油天然气股份有限公司 | Automatic setting mechanism for concentric seal testing and adjusting instrument and concentric seal testing and adjusting instrument |
| CN110107239A (en) * | 2018-12-27 | 2019-08-09 | 贵州航天凯山石油仪器有限公司 | A kind of downhole instrument locating detent actuates structure |
| CN110107239B (en) * | 2018-12-27 | 2021-04-09 | 贵州航天凯山石油仪器有限公司 | Structure of opening and contracting of instrument positioning pawl in pit |
| CN110863799A (en) * | 2019-12-11 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Electric descaling method and device for oil field water injection well |
| CN110984928A (en) * | 2019-12-16 | 2020-04-10 | 东北石油大学 | Underground positioning adjusting arm |
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