CN108798593A - circulating valve - Google Patents
circulating valve Download PDFInfo
- Publication number
- CN108798593A CN108798593A CN201710307224.0A CN201710307224A CN108798593A CN 108798593 A CN108798593 A CN 108798593A CN 201710307224 A CN201710307224 A CN 201710307224A CN 108798593 A CN108798593 A CN 108798593A
- Authority
- CN
- China
- Prior art keywords
- ball
- valve
- bar
- torus
- cycle
- 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
- 238000013016 damping Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 210000000078 claw Anatomy 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
A kind of circulating valve, including top connection, main body cover and lower contact, wherein set a valve inside top connection, usually a ball is not allowed to pass through, when move downward one apart from when allow the ball to pass through；A damping cavity and a torus are formed inside main body cover, a cycle bar is wherein provided in torus, and cycle rod outer surface is equipped with a rail mechanism, coordinates with the positioning device stretched into the torus, the cycle bar is enable to move axially in reciprocal fashion；Several through-holes are formed between main body cover and torus, recycles and is also formed with several through-holes on bar, and when putting into a ball, cycle bar movement makes above two through-hole be connected to；When putting into a through-hole again, cycle bar moves again to be made no longer to be connected between two kinds of through-holes.The circulating valve of the present invention is simple in structure, convenient for manufacturing, acting, controllable, repdocutbility is good, at low cost.
Description
Technical field
The present invention relates to a kind of oil-well drilling equipments, relate more specifically to one kind in operations such as oil drilling, completion, well workovers
In the process, there is the circulating valve that can be recycled for multiple times under leakage and the operating mode of high flow rate washover in stratum.
Background technology
In Process of Oil Well Drilling, bottom () layer situation complexity, stratum easily misses, causes drilling fluid that can not return and be discharged to
Ground just needs to implement plugging operations at this time, and the channel inside drill string between leakage bottom is established by circulating valve, will be straight greatly
Diameter sealing agent, which is filled out to be applied in leak stopping stratum, fills up loophole.In addition, in motor drilling process, need to clean wellbore,
In order to reduce the noise of motor rotation work, while cleaning solution also to be avoided to generate interference to motor operations, may be used at this time
Circulating valve opens the channel in drill string between wellbore, to carry out the cycle of huge discharge.
It can be seen that circulating valve plays critically important effect in drillng operation.But circulating valve in the prior art
Usually switching function only may be implemented in (connector), cannot achieve multiple cycle.
Invention content
In view of this, the main purpose of the present invention is to provide a kind of circulating valves, to solve the above technical problems in extremely
It is one of few.
To achieve the goals above, the present invention provides a kind of circulating valves, including sequentially connected top connection, main body cover
And lower contact, wherein：
The first cavity of both ends connection is formed inside top connection, and a valve that can be moved up and down is set in the first cavity
Door, the valve usually do not allow the ball of a predetermined diameter to pass through；The widened space of a caliber is arranged in first cavity lower end, can
The valve is set to open, to allow the ball to pass through；
The second cavity of both ends connection is formed inside main body cover, which includes a damping cavity and a cycle
Chamber；Wherein：
It is provided with a damper rod that can be moved axially in reciprocal fashion in damping cavity, is arranged between damper rod and damping cavity wall
There is a damping mechanism；Damper rod is a hollow pipe, and pipe diameter is more than the diameter of the ball；
It is provided with a cycle bar in torus, cycle rod outer surface is equipped with a rail mechanism, and stretches into the torus
A positioning device cooperation, to enable the cycle bar to move axially in reciprocal fashion；Recycle bar and the torus or lower contact it
Between be provided with elasticity reset device；Cycle bar is a hollow pipe, and pipe diameter is more than the diameter of the ball；
Several through-holes are formed between main body cover and torus, recycles and is also formed with several through-holes on bar, when on cycle bar
Rail mechanism and the positioning device when be in otherwise limit position, the through-hole on through-hole and main body cover on cycle bar is in
Connection or disconnected two states；
The third cavity of both ends connection is formed inside lower contact, a cage is set in the third cavity, for storing warp
The ball crossed ball seat, damper rod and cycle bar and reached.
Based on the above-mentioned technical proposal it is found that the circulating valve of the present invention have it is simple in structure, controllable, multiple convenient for manufacture, action
Show the advantages that property is good, at low cost.
Description of the drawings
Fig. 1 is the schematic cross-section of the structure of the circulating valve of the present invention.
In upper figure, reference numeral meaning is as follows：1, top connection, 2, locknut, 3, ball seat, 4, ball, 5, damper rod, 6, damping
Chamber, 7, sealing element, 8, torus, 9, cycle bar, 10, position axis pin, 11, spring, 12, lower contact, 13, cage.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
Since the position of product placement of the present invention can arbitrarily change, heretofore described "upper", "lower",
The nouns of locality such as "left", "right" only indicate opposite position relationship, rather than limit absolute position relationship.It is retouched below
In stating, in conjunction with Fig. 1 of the invention it is found that when describing concrete structure, circulating valve of the invention is using the diagram side placed vertically
Formula, top connection are located at upper end, and lower contact is located at lower end, and upper and lower relation hereinafter is taken this as the standard.
The invention discloses a kind of circulating valves, including sequentially connected top connection, main body cover and lower contact, wherein：
The first cavity of both ends connection is formed inside top connection, and a valve that can be moved up and down is set in the first cavity
Door, the valve usually do not allow the ball of a predetermined diameter to pass through；The widened space of a caliber is arranged in first cavity lower end, can
The valve is set to open, to allow the ball to pass through；
The second cavity of both ends connection is formed inside main body cover, which includes a damping cavity and a cycle
Chamber；Wherein：
It is provided with a damper rod that can be moved axially in reciprocal fashion in damping cavity, is arranged between damper rod and damping cavity wall
There is a damping mechanism；Damper rod is a hollow pipe, and pipe diameter is more than the diameter of the ball；
It is provided with a cycle bar in torus, cycle rod outer surface is equipped with a rail mechanism, and stretches into the torus
A positioning device cooperation, to enable the cycle bar to move axially in reciprocal fashion；Recycle bar and the torus or lower contact it
Between be provided with elasticity reset device；Cycle bar is a hollow pipe, and pipe diameter is more than the diameter of the ball；
Several through-holes are formed between main body cover and torus, recycles and is also formed with several through-holes on bar, when on cycle bar
Rail mechanism and the positioning device when be in otherwise limit position, the through-hole on through-hole and main body cover on cycle bar is in
Connection or disconnected two states；
The third cavity of both ends connection is formed inside lower contact, a cage is set in the third cavity, for storing warp
The ball crossed ball seat, damper rod and cycle bar and reached.
Wherein, which is a ball seat, which includes several elastic claws that can be opened, when the valve motion to the caliber
When widened space, elastic claw is opened, to make the aperture in ball seat center that the ball be allowed to pass through；Alternatively, the valve is several
Elastip pin, the widened space of the caliber is corresponding skewed slot, when valve motion space widened to the caliber, bullet
Property pin heads into skewed slot, to make the aperture in valve center that the ball be allowed to pass through.
Wherein, which includes several sections, and each section is connected through a screw thread.For example, the main body cover includes damping
Section and circulation section, are wherein formed with damping cavity in the damping section, torus are formed in the circulation section.
Wherein, it is provided with sealing mechanism between the damper rod and damping cavity wall.
Wherein, which is position pin or positioning bolt.
Wherein, which is the combination of M shapes or several M shapes, wherein there are three the combination tools of the M shapes or several M shapes
The extreme position of different height corresponds to the ball seat initial position, on ball seat releasing position and cycle bar outside through-hole and main body respectively
Through-hole keeps the position of connected state on shell.
Wherein, which is spring.
Wherein, which can be recycled for multiple times.
In some embodiments, circulating valve of the invention includes：Pitching excitation mechanism, buffer damping mechanism, reciprocation cycle
Mechanism, cage of receiving etc..Specifically, as shown in Figure 1, the circulating valve of the present invention with lower component mainly by being formed：
Top connection 1 and damping cavity 6 are linked together by drill rod thread, while can be sealed；Locknut 2 by screw thread with it is upper
Connector 1 links together.Ball seat 3 is mounted on the lower end of locknut 2.The lower end of locknut 2 is equipped with damper rod 5, and 5 outside of damper rod is equipped with
Channel can move back and forth in damping cavity 6.Be provided between 6 specific position of damper rod 5 and damping cavity sealing element 7 carry out it is close
Envelope.
Torus 8 is linked together by screw thread and damping cavity 6, and 8 inside of torus recycles 9 outer diameter of bar equipped with cycle bar 9
It is equipped with rail mechanism, is linked together by position axis pin 10 and torus 8, cycle bar 9 can be certain in torus 8
Reciprocation cycle moves in range.It recycles and spring 11 is housed between bar 9 and torus 8 or lower contact 12.
Damper rod 5 forms the channel being connected to 9 inside of cycle bar, and ball 4 is allowed to reach up to cage from ball seat 3 from the channel
13.It is formed with through-hole on cycle bar 9,9 inner passage of cycle bar is made to be connected to the bar external space.
Lower contact 12 is connect by screw thread with torus 8, while compressing spring 11.A cage 13 is equipped in lower contact 12,
Hole is arranged at 13 top of cage, the latus rectum requirement of mud when can meet drilling well.
The concrete application scene of the circulating valve of the present invention is described in detail with reference to Fig. 1.The circulating valve of the present invention
Lower end connects lower drilling string by lower contact 12, and upper end connects upper drilling string by top connection 1.The circulating valve is removed with drill string one
Well.Occurs bottom leakage in drilling process, when carrying out blocking construction to stratum, in well head to putting into ball 4, ball inside drill string
Under the promotion of mud, moves downward and fall on ball seat 3.
Continue to suppress into drill string, improves pressure.A closed space is formed above ball seat 3, ball 4 pushes ball seat 3
It moves downward, ball seat 3 pushes damper rod 5 to move downward.Damper rod 5 moves from top to bottom in damping cavity 6, makes under damping cavity 6
The damping fluid of side can be flowed by the channel in damper rod 5 from lower chamber to upper cavity.Since area of passage is certain, also just determine
The movement speed of damper rod 5 from the top down, forms damping action.
Damper rod 5 pushes cycle bar 9 to move down.The position pin 10 installed on torus 8 recycles the rail on bar 9
Road slot coordinates with position pin 10.Cycle bar 10 can be moved down along the track groove of itself.
When ball 4 moves to the grooved position of top connection 1, ball seat 3 can open, and liquid-driving ball 4 moves downward, and pass through resistance
Buddhist nun's bar 5 and cycle bar 9 enter cage 13.
Cycle bar 9 moves from bottom to top under the action of spring 11.Damper rod 5 is pushed to move from bottom to top simultaneously, simultaneously
Ball seat 3 is pushed to be in closed state.
After recycling bar 9 to certain position, certain position can be fixed under the cooperation of position axis pin 10 and cycle bar 9
It sets.The channel on cycle bar 9 has been opened simultaneously, the unicom of cycle bar 9 inner cavity and torus 8 has been realized, is also achieved that circulating valve
Inside and outside communication.
After leak stopping and cycle construction, by throwing a ball 4 again inside drill string.Ball 4 is pushed by mud and is fallen again in ball
On seat 3, continue to increase pump pressure, about 3 ball seat forms pressure difference, and ball 4 pushes ball seat 3 to move down, while pushing damper rod 5 downward
It is mobile.
After ball 4 is moved to the grooved position of top connection 1, the elastic claw of ball seat 3 flicks, and ball 4 enters damping by elastic claw
The inside of bar 5 enters back into the inside of cycle bar 9, finally reaches inside cage 13.
After ball 4 passes through ball seat 3, cycle bar 9 moves down under the action of spring 11, while pushing damper rod 7 to moving down
It is dynamic.Under M rail effects on position axis pin 10 and cycle bar 9, the channel on cycle bar 9 and torus 8 is closed.Complete cycle
The closing process of connector.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of circulating valve, including sequentially connected top connection, main body cover and lower contact, wherein：
The first cavity of both ends connection is formed inside top connection, and a valve that can be moved up and down is set in the first cavity, it should
Valve does not usually allow the ball of a predetermined diameter to pass through；The widened space of a caliber is arranged in first cavity lower end, can make this
Valve is opened, to allow the ball to pass through；
The second cavity of both ends connection is formed inside main body cover, which includes a damping cavity and a torus；Its
In：
It is provided with a damper rod that can be moved axially in reciprocal fashion in damping cavity, one is provided between damper rod and damping cavity wall
Damping mechanism；Damper rod is a hollow pipe, and pipe diameter is more than the diameter of the ball；
Be provided with a cycle bar in torus, cycle rod outer surface is equipped with a rail mechanism, with stretch into the torus one
Positioning device coordinates, to enable the cycle bar to move axially in reciprocal fashion；It is set between cycle bar and the torus or lower contact
It is equipped with elasticity reset device；Cycle bar is a hollow pipe, and pipe diameter is more than the diameter of the ball；
Several through-holes are formed between main body cover and torus, are recycled and are also formed with several through-holes on bar, the rail on cycle bar
When road mechanism is in otherwise limit position with the positioning device, the through-hole on cycle bar is in the through-hole on main body cover to be connected to
Or disconnected two states；
The third cavity of both ends connection is formed inside lower contact, a cage is set in the third cavity, passes through ball for storing
Seat, damper rod and cycle bar and the ball that reaches.
2. circulating valve as described in claim 1, which is characterized in that the valve is a ball seat, which includes that several can open
The elastic claw opened, when valve motion space widened to the caliber, elastic claw is opened, to make the aperture in ball seat center allow
The ball passes through.
3. circulating valve as described in claim 1, which is characterized in that the valve is several Elastip pins, the widened sky of the caliber
Between be corresponding skewed slot, when valve motion space widened to the caliber, Elastip pin heads into skewed slot, to make
The ball is allowed to pass through in the aperture in valve center.
4. circulating valve as described in claim 1, which is characterized in that the main body cover includes several sections, and each section passes through screw thread
Connection.
5. circulating valve as claimed in claim 4, which is characterized in that the main body cover includes damping section and circulation section, wherein should
It is formed with damping cavity in damping section, torus is formed in the circulation section.
6. circulating valve as described in claim 1, which is characterized in that be provided with sealer between the damper rod and damping cavity wall
Structure.
7. circulating valve as described in claim 1, which is characterized in that the positioning device is position pin or positioning bolt.
8. circulating valve as described in claim 1, which is characterized in that the rail mechanism is the combination of M shapes or several M shapes, wherein
The combination tool of the M shapes or several M shapes corresponds to the ball seat initial position, ball seat is released respectively there are three the extreme position of different height
It puts position and recycles the position that through-hole on bar keeps connected state with through-hole on main body cover.
9. circulating valve as described in claim 1, which is characterized in that the elasticity reset device is spring.
10. circulating valve as described in claim 1, which is characterized in that the circulating valve can be recycled for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307224.0A CN108798593A (en) | 2017-05-04 | 2017-05-04 | circulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307224.0A CN108798593A (en) | 2017-05-04 | 2017-05-04 | circulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108798593A true CN108798593A (en) | 2018-11-13 |
Family
ID=64054344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307224.0A Pending CN108798593A (en) | 2017-05-04 | 2017-05-04 | circulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798593A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110073321A1 (en) * | 2009-09-25 | 2011-03-31 | Baker Hughes Incorporated | Tubular actuator and method |
| US20110315390A1 (en) * | 2010-06-29 | 2011-12-29 | Baker Hughes Incorporated | Tool with Multi-Size Ball Seat Having Segmented Arcuate Ball Support Member |
| US20120043093A1 (en) * | 2009-12-08 | 2012-02-23 | Philippe Cravatte | Apparatus and method |
| US20120067595A1 (en) * | 2010-09-20 | 2012-03-22 | Joe Noske | Remotely operated isolation valve |
| CN202220572U (en) * | 2011-08-31 | 2012-05-16 | 中国石油化工股份有限公司 | Repeatedly activatable and recyclable bypass short joint |
| CN102953708A (en) * | 2011-08-31 | 2013-03-06 | 中国石油化工股份有限公司 | Bypass short joint capable of being activated and circulated repeatedly |
| US20130299184A1 (en) * | 2010-06-29 | 2013-11-14 | Baker Hughes Incorporated | Multi-Cycle Ball Activated Circulation Tool with Flow Blocking Capability |
| US8863853B1 (en) * | 2013-06-28 | 2014-10-21 | Team Oil Tools Lp | Linearly indexing well bore tool |
| US20150000922A1 (en) * | 2013-06-28 | 2015-01-01 | Team Oil Tools Lp | Well Bore Tool With Ball Seat Assembly |
| CN104879091A (en) * | 2015-05-22 | 2015-09-02 | 中国石油集团渤海钻探工程有限公司 | Integrated while-drilling leaking stoppage circulation control valve |
| CN204899858U (en) * | 2015-07-20 | 2015-12-23 | 中国石油集团长城钻探工程有限公司 | Radial well plain type recycle valve |
| CN204984354U (en) * | 2015-05-15 | 2016-01-20 | 中国海洋石油总公司 | Unlimited level fracturing sliding sleeve of full latus rectum |
| US20160017690A1 (en) * | 2014-07-21 | 2016-01-21 | Toby Scott Baudoin | Pressure Activated Cyclical Valve Apparatus and Method |
| CN105625971A (en) * | 2014-10-28 | 2016-06-01 | 中国石油化工股份有限公司 | Expansion hanger and sitting hanging method thereof |
| CN205823234U (en) * | 2016-07-08 | 2016-12-21 | 北京博德世达石油技术股份有限公司 | A kind of relief valve |
| CN106321013A (en) * | 2016-10-21 | 2017-01-11 | 西南石油大学 | Single ball throwing type repeated circulating valve |
| CN206801526U (en) * | 2017-05-04 | 2017-12-26 | 北京博德世达石油技术股份有限公司 | Circulating valve |
-
2017
- 2017-05-04 CN CN201710307224.0A patent/CN108798593A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110073321A1 (en) * | 2009-09-25 | 2011-03-31 | Baker Hughes Incorporated | Tubular actuator and method |
| US20120043093A1 (en) * | 2009-12-08 | 2012-02-23 | Philippe Cravatte | Apparatus and method |
| US20110315390A1 (en) * | 2010-06-29 | 2011-12-29 | Baker Hughes Incorporated | Tool with Multi-Size Ball Seat Having Segmented Arcuate Ball Support Member |
| US20130299184A1 (en) * | 2010-06-29 | 2013-11-14 | Baker Hughes Incorporated | Multi-Cycle Ball Activated Circulation Tool with Flow Blocking Capability |
| US20120067595A1 (en) * | 2010-09-20 | 2012-03-22 | Joe Noske | Remotely operated isolation valve |
| CN202220572U (en) * | 2011-08-31 | 2012-05-16 | 中国石油化工股份有限公司 | Repeatedly activatable and recyclable bypass short joint |
| CN102953708A (en) * | 2011-08-31 | 2013-03-06 | 中国石油化工股份有限公司 | Bypass short joint capable of being activated and circulated repeatedly |
| US20150000922A1 (en) * | 2013-06-28 | 2015-01-01 | Team Oil Tools Lp | Well Bore Tool With Ball Seat Assembly |
| US8863853B1 (en) * | 2013-06-28 | 2014-10-21 | Team Oil Tools Lp | Linearly indexing well bore tool |
| US20160017690A1 (en) * | 2014-07-21 | 2016-01-21 | Toby Scott Baudoin | Pressure Activated Cyclical Valve Apparatus and Method |
| CN105625971A (en) * | 2014-10-28 | 2016-06-01 | 中国石油化工股份有限公司 | Expansion hanger and sitting hanging method thereof |
| CN204984354U (en) * | 2015-05-15 | 2016-01-20 | 中国海洋石油总公司 | Unlimited level fracturing sliding sleeve of full latus rectum |
| CN104879091A (en) * | 2015-05-22 | 2015-09-02 | 中国石油集团渤海钻探工程有限公司 | Integrated while-drilling leaking stoppage circulation control valve |
| CN204899858U (en) * | 2015-07-20 | 2015-12-23 | 中国石油集团长城钻探工程有限公司 | Radial well plain type recycle valve |
| CN205823234U (en) * | 2016-07-08 | 2016-12-21 | 北京博德世达石油技术股份有限公司 | A kind of relief valve |
| CN106321013A (en) * | 2016-10-21 | 2017-01-11 | 西南石油大学 | Single ball throwing type repeated circulating valve |
| CN206801526U (en) * | 2017-05-04 | 2017-12-26 | 北京博德世达石油技术股份有限公司 | Circulating valve |
Non-Patent Citations (1)
| Title |
|---|
| 池胜高;代琼曦;张策;李雪松;: "国外多次激活旁通阀技术现状", 石油机械, no. 10 * |
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