CN105178912B - A kind of drilling tool by-passing valve - Google Patents
A kind of drilling tool by-passing valve Download PDFInfo
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- CN105178912B CN105178912B CN201410273626.XA CN201410273626A CN105178912B CN 105178912 B CN105178912 B CN 105178912B CN 201410273626 A CN201410273626 A CN 201410273626A CN 105178912 B CN105178912 B CN 105178912B
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Abstract
The present invention relates to a kind of drilling tool by-passing valve.The drilling tool is included with by-passing valve：Valve body, it is configured to hollow pipeline section, the side wall of the valve body is provided with the boss to extend internally and the by-pass prot for penetrating the side wall, start slide bushing assembly, it is arranged at the valve inner, and the by-pass prot can be blocked, the startup slide bushing assembly is moved downward on the boss to open the by-pass prot when needing to establish interim circulation；Slide bushing assembly is closed, it is arranged at the valve inner, and the closure slide bushing assembly is moved down to block the by-pass prot when needing to close the interim circulation.This drilling tool by-passing valve reliability is high, has a safety feature, and can reduce production cost.
Description
Technical field
The invention belongs to Oil ＆ Gas Drilling Technology field, more particularly to a kind of drilling tool by-passing valve.
Background technology
In the drilling process for carrying out oil, natural gas, shale gas or coal bed gas, when underground runs into complex situations, example
, it is necessary to carry out Rapid Circulation temporarily during such as bit port blocking, mud motor damage and plugging operations, and recovering
Before full well circulation (continuation drilling well), generally require frequently to make a trip, cause mud loss big, drilling period extends, and adds
Drilling risk and cost.The by-passing valve used in the prior art can only mostly establish interim Rapid Circulation, but recover complete
Trip-out that will be at least 1 time before well circulation and lower brill.
Patent US6095249 discloses the switchable drilling tool by-pass valve of pressure control spring formula.The master of the drilling tool by-passing valve
Want feature：When needing to open by-passing valve, increase the discharge capacity of pump, when flow velocity reaches certain value in drilling tool, piston pushes away in fluid
Dynamic to move downward, by-pass prot is opened, and the discharge capacity of pump is reduced when needing to close by-passing valve, and piston is multiple under spring force
Position, bypass bore closure.Shortcoming：Spring failure can not then close by-pass prot；Spring cavity needs to arrange spiracle, adds underground wind
Danger.
Therefore, it is badly in need of the drilling tool by-passing valve that a kind of reliability is high, has a safety feature and can reduce production cost.
The content of the invention
For it is above-mentioned the problem of, the present invention proposes a kind of drilling tool by-passing valve, is carried out using this drilling tool with by-passing valve
Reliability is high during drillng operation, has a safety feature, can reduce production cost.
Drilling tool proposed by the present invention is included with by-passing valve：Valve body, it is configured to hollow pipeline section, and the side wall of valve body is provided with
The boss to extend internally and the by-pass prot of insertion side wall, start slide bushing assembly, it is arranged at valve inner, and can block side
Through hole, when needing to establish interim circulation, startup slide bushing assembly is moved downward on the boss to open by-pass prot；Closure is slided
Component is covered, it is arranged at valve inner, and closure slide bushing assembly is moved down to block by-pass prot when needing to close interim circulation.
When carrying out drillng operation with by-passing valve using the drilling tool of the present invention, the drilling tool is attached on drill collar with by-passing valve,
By starting the moving down to open by-pass prot of slide bushing assembly when needing to establish interim circulation, interim circulation is thus established, when
Closing by-pass prot is moved down by closing sliding sleeve when needing to close interim circulation, so as to recover full well circulation.Due to not adopting
With spring structure so that the reliability that the drilling tool is worked with by-passing valve is improved, beneficial to safety in production, and avoid frequently rising
Lower brill, shorten the production time, reduce production cost.
In one embodiment, starting slide bushing assembly includes that startup sliding sleeve, ball seat and the startup of by-pass prot can be blocked
Ball, ball seat are connected to startup sliding sleeve, and starting ball can coordinate with the drilling fluid that dams with ball seat, coordinate when starting ball with ball seat, open
Pressure above dynamic ball starts sliding sleeve when being not less than the first limiting pressure and is moved downward to boss, to open by-pass prot.Thus may be used
To use input to start ball to retain drilling fluid, so as to which drill string to be temporarily divided into two parts up and down, then pressurization starts ball
The pressure of top drilling fluid make it that starting sliding sleeve moves down so as to which by-pass prot be opened, and establishes interim circulation, simple to operate, easily
In realization.
In one embodiment, start sliding sleeve and the side wall of valve body is connected to by the first tightening piece, with from the inner side of valve body
By-pass prot is blocked, the first limiting pressure is to cut the minimum shearing force of the first tightening piece.Adopt to cause to start in such a way and slide
It is simple to cover the structure set up, is easy to the foundation circulated temporarily.
In one embodiment, closing slide bushing assembly includes closure sliding sleeve, ball supporting part and closure ball, ball supporting part shape
Into on closure sliding sleeve, closure ball coordinates with the drilling fluid that dams with ball supporting part, coordinates when closing ball with ball supporting part, closes ball
Sliding sleeve is closed when the pressure of top is not less than the second limiting pressure and is displaced downwardly to startup sliding sleeve, to close by-pass prot, and closes ball
Diameter be more than start ball diameter.Drilling fluid is equally retained by the way of pitching, and by closing the drilling well above ball
Sliding sleeve is closed when the pressure of liquid is not less than the second limiting pressure to move down, so that closure sliding sleeve opens by-pass prot, recovers complete
Well circulates.
In one embodiment, closure sliding sleeve is connected to the side wall of valve body by the second tightening piece, and the second limiting pressure is
The minimum shearing force of the second tightening piece is cut, and the lower end for closing sliding sleeve contacts with starting sliding sleeve.So that closure sliding sleeve
The structure of component is simple, is easy to block by-pass prot, and the lower end for closing sliding sleeve in addition is beneficial to close by-pass prot in startup sliding sleeve contact
The accurate control of operation.
In one embodiment, ball seat is connected to startup sliding sleeve by the 3rd tightening piece, coordinates when starting ball with ball seat, ball
Startup ball can at least be discharged by starting sliding sleeve when the pressure that seat is born is not less than three limiting pressures, and at least startup ball can
Moved down through the inside of boss.Thus so that recovering full well circulation while causing startup slide bushing assembly simple in construction
It is simple to operate.
In one embodiment, the 3rd limiting pressure is to cut the minimum shearing force of the 3rd tightening piece, and the 3rd limit
Pressure is more than the first limiting pressure and the second limiting pressure.Reliability thus, it is possible to ensure the work of drilling tool by-passing valve.
In one embodiment, closing sliding sleeve is included in the butting section of closure sliding sleeve bottom, in the middle part of closure sliding sleeve
Aerial drainage portion and compression zone in closure sliding sleeve top, relative to the outer end of butting section, the outer end in aerial drainage portion and compression zone
Outer end is close to the axis of valve body, and to form drainage channel in the outside in aerial drainage portion and compression zone, aerial drainage portion is provided with insertion closure
Discharge orifice inside and outside sliding sleeve, when closing sliding sleeve closing by-pass prot, drilling fluid flows to discharge orifice by drainage channel.Thus when closing
When closing sliding sleeve closing by-pass prot, because closure ball and ball supporting part coordinate and the drilling fluid that dams, then the drilling well above closure ball
Liquid flow to the lower section of closure ball by drainage channel and discharge orifice, starts the space of the top of ball, is then bored by improving
The power of well liquid circulating pump come increase start ball above pressure, when the pressure be not less than three limiting pressures startup sliding sleeve release
Ball seat is put, so as to recover full well circulation.
In one embodiment, close before interim circulation, the side wall sealing of compression zone and valve body coordinates.Therefore ensure that valve
Sealing fitting between body and closure sliding sleeve, building the pressure before being closed beneficial to interim circulation, improves drilling tool and is worked with by-passing valve
Reliability.
In one embodiment, discharge orifice be less than to the distance for closing sliding sleeve upper end start the lower end of sliding sleeve to boss away from
From.Thus when closing sliding sleeve closure by-pass prot, compression zone departs from valve body, and drilling fluid is flow to by drainage channel and discharge orifice and closed
The lower section of ball is closed, the progress resumed work so as to the circulation of full well.
In this application, term " interior ", " outer " are that the direction that valve axis are pointed to for the axis of valve body is
" interior ", direction in contrast is " outer ".
Compared with prior art, it is an advantage of the current invention that realizing the control to by-passing valve by throwing motion, particularly
The opening of by-pass prot is realized in movement by starting sliding sleeve, and interim circulation is established with this, so as to carry out the operations such as leak stopping, leak stopping etc.
By-pass prot is closed by closing the movement of sliding sleeve after the completion of operation, so as to recover full well circulation.Which thereby enhance by-passing valve work
The reliability and security of work.The other bypass valve arrangement is simple, and operation is flexible, opens by-passing valve, closes by-passing valve and suppress
Pressure is recovered the Stress control that full well circulates and realized by improving the power of circulation of drilling fluid pump after throwing motion, therefore can be fast
By-passing valve is opened and closed fastly.Further, in the case where establishing interim circulation, the work such as leak stopping can be completed without pulling out of hole
Industry, drilling well production efficiency is improved, reduces production cost.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is the sectional view of drilling tool by-passing valve according to a preferred embodiment of the present invention；
Fig. 2 is to put into the schematic diagram for starting ball with by-passing valve to Fig. 1 drilling tool；
Fig. 3 is the schematic diagram that the by-pass prot of Fig. 1 drilling tool by-passing valve is opened；
Fig. 4 is the schematic diagram of the bypass bore closure of Fig. 1 drilling tool by-passing valve；
Fig. 5 is that Fig. 1 drilling tool is built the pressure with by-passing valve to establish the schematic diagram of full well circulation.
In figure, identical component is indicated by identical reference.Accompanying drawing is not drawn according to the ratio of reality.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in figure 1, drilling tool proposed by the present invention by-passing valve includes valve body, starts slide bushing assembly and closes sliding sleeve group
Part.The drilling tool by-passing valve and its various pieces of the present invention will be described in detail belows.
As shown in figure 1, valve body 10 is formed as hollow pipeline section, the diameter phase of the diameter of pipeline section substantially with drill collar (not shown)
Deng in order to which valve body 10 is connected on drill collar.As illustrated, under normal drilling condition, drilling fluid enters drill collar by valve body 10
In, drill bit is then fed into, the landwaste that drill bit drills through is carried to ground from shaft bottom.The side wall of valve body 10, exactly should
It is that the boss 100 to extend internally is provided with madial wall, boss 100 can be integrally formed with valve body, the radical length of boss
Can be arbitrarily, as long as position-limiting action can be played to starting sliding sleeve and do not continue to move down, in order to improve this
The reliability of the position-limiting action of boss 100, it is preferable that the radial dimension of boss 100 is more than the radial dimension for starting sliding sleeve 20.Typically
For, in order to make full use of the space of valve body, boss 100 reduces valve body 10 with this as much as possible close to the lower end of valve body 10
Axial length.In addition, as illustrated, the by-pass prot 200 of insertion side wall, the inside of valve body 10 are additionally provided with the side wall of valve body 10
It is communicated in the inside of drilling rod.The outside of valve body 10 is annular space, i.e., drill-in fluid sprays from bit port, and cutting carring returns from annular space
The runner on ground, therefore under normal circumstances, the pressure in the pressure and valve body 10 of annular space will not be poor too many, ensures to bore with this
Tool and the safety of drilling well work.But when there is bit port blocking, by-pass prot 200 can be opened and connect valve body 10
It is inside and outside, interim circulation is established, the drilling fluid inside drilling rod is exported in time, next, flushing liquor is imported out of drilling rod, by side
Through hole 200 and annular space back flush drill bit, also or pull out of hole, and solve the problems, such as bit port blocking with this.It is and stifled when needing
When leaking operation, by-pass prot 200 can be opened, establishes interim circulation, after the drilling fluid export inside drilling rod, then into drilling rod
Launch sealing agent, sealing agent by by-pass prot 200 and annular space enter shaft bottom with plug leak at.It is it can be seen that sharp in drilling process
Temporary derangement that can be to occur in timely processing drilling process with the drilling well by-passing valve, for drillng operation save the time and into
This.
Start the inside that slide bushing assembly is arranged at valve body 10, be used for blocking by-pass prot in the case of drilling well normal work, when
When needing to establish interim circulation, start slide bushing assembly move down, when it is resisted against on boss 100 by-pass prot 200 do not have
Start the closure of slide bushing assembly, so as to establishing interim circulation.Preferably, starting slide bushing assembly includes that bypass can be blocked
Startup sliding sleeve 20, ball seat 40 and the startup ball 40 ' in hole, ball seat 40, which is connected to, starts sliding sleeve 20, starts ball 40 in normal drilling well
Work is not involved in the course of work, when needing to open by-pass prot 200, ball 40 ' will be started and put into valve body 10, start ball
40 ' coordinate with ball seat 40 for the drilling fluid that dams, and build the pressure, operation makes startup sliding sleeve 20 move down by-pass prot 200
Open.Coordinate when starting ball 40 ' with ball seat 40, start when the pressure above ball 40 ' is not less than the first limiting pressure and start sliding sleeve
20 are moved downward to boss 100, so as to open by-pass prot 200.
As shown in figure 1, start the side wall that sliding sleeve 20 is connected to valve body 10 by the first tightening piece 50, when drilling well normal operation
In the case of, start sliding sleeve 20 and block by-pass prot 200 from the inner side of valve body 10, so as to recover full well circulation.First tightening piece 50
Can be the tightening piece such as usually used pin, the first tightening piece 50 bears to be broken in the case of limiting pressure, so as to
Starting sliding sleeve 20 can slide downward.Specifically, when needing to open by-pass prot 200, start ball 40 ' from upper input and enter
In valve body 10, and drop on valve seat 40, separate (referring to Fig. 2), increase so as to which space air-tightness of the ball above and below 40 ' will be started
Start the pressure in the more than 40 ' space of ball, when increasing to the first tightening piece 50 and can not bear, i.e., not less than the first limit pressure
During power, such as 5MPa, the first tightening piece 50 are broken, and are started sliding sleeve 20 so as to discharge and are moved downwardly until and touch boss 100, boss
100 are used for starting the spacing of sliding sleeve 20.The opening of by-pass prot 200 is realized by above step, starts sliding sleeve 20 and moves down
Distance need ensure by-pass prot 200 smoothly comprehensively open (referring to Fig. 3).
As preferred embodiment, closure slide bushing assembly is arranged inside valve body 10, when needing to close interim circulation, is closed
Slide bushing assembly is closed to move down to block by-pass prot 200.Preferably, closing slide bushing assembly includes closure sliding sleeve 30, ball branch
Support part 321 and closure ball 321 ', ball supporting part 321 are formed on closure sliding sleeve 30, can be as one of closure sliding sleeve 30
Point, closure ball 321 ' on closure sliding sleeve 30 can also be connected to by connector and is not involved in work in normal drilling process,
When needing to close interim circulation by closure ball 321 ' input to valve body 10.Closure ball 321 ' is moved to ball with drilling fluid
On supporting part 321, coordinate with ball supporting part 321 with the drilling fluid that dams, coordinate when closing ball 321 ' with ball supporting part 321, close
Sliding sleeve 30 is closed when pressure above ball 321 ' is not less than the second limiting pressure and is moved down and is started until abutting on sliding sleeve 20,
So as to block by-pass prot 200, and the diameter for closing ball 321 ' is more than the diameter for starting ball 40 ', thereby guarantees that by-pass prot 200
Opening and the reliability of closure action.
As shown in figure 1, preferably, closure sliding sleeve 30 is connected to the side wall of valve body 10 by the second tightening piece 60, closes
The effect for closing sliding sleeve 30 is exactly to close by-pass prot when needing and closing by-pass prot 200, so as to recover the circulation of full well, continue into
Row drilling well works.Second tightening piece 60 can also be the tightening piece such as pin.As illustrated, further, close under sliding sleeve 30
End contacts with starting sliding sleeve 20, with this so that blocking by-pass prot 200 with closing the speed of sliding sleeve 30, it is thus possible to pass through closure
The quick closedown by-pass prot 200 of sliding sleeve 30.When input closure ball 321 ' (referring to Fig. 1 and Fig. 4), closure ball 321 ' and ball supporting part
321 coordinate, the pressure above increase closure ball 321 ', when pressure is increased to when the second tightening piece 60 can not be born for example
During 5MPa, i.e. the second limiting pressure, the second tightening piece cut it is disconnected, closure sliding sleeve 30 lose constraint and slide downward, be resisted against and open
The upper end of dynamic sliding sleeve 20, thus closes by-pass prot 200, and interim circulation terminates.
Further, ball seat 40 is connected to by the 3rd tightening piece 70 starts sliding sleeve 20, and the 3rd tightening piece can be pin
Deng.By-pass prot 200 be closed sliding sleeve 30 block after, start ball 40 ' still coordinate with ball seat 40, now the space inside drill string according to
Two spaces up and down are so divided into by startup ball 40 ', now increase starts the pressure of the drilling fluid above ball 40 ', when ball seat 40 is held
Startup ball 40 ' can at least be discharged by starting sliding sleeve 20 when the pressure received is not less than three limiting pressures, and at least start ball 40 '
The inside of boss 100 can be passed through to move down.So as to recover full well circulation.Preferably, the 3rd limiting pressure is cutting
The minimum shearing force of 3rd tightening piece, and the 3rd limiting pressure is more than the first limiting pressure and the second limiting pressure.Start ball
Pressure above in the of 40 ' persistently increases to the ultimate strength of the 3rd tightening piece 70, such as disconnected, startup ball 40 ' and ball are cut during 10MPa
Seat 40 is fallen together, through the inside of boss 100, on the one-way valve seat for eventually falling in drill bit top, and so as to establish full well circulation,
Continue drilling well work.
Preferably, as shown in Figure 1, Figure 4 and Figure 5, closing sliding sleeve 30 is included in the butting section of closure sliding sleeve 30 bottom
300, the compression zone 320 in the aerial drainage portion 310 at the middle part of closure sliding sleeve 30 and in closure sliding sleeve 30 top, relative to butting section
300 outer end, the outer end in aerial drainage portion 310 and the outer end of compression zone 320 close to valve body 10 axis, with aerial drainage portion 310 and by
The outside of splenium 320 forms drainage channel 90, and aerial drainage portion 310 is provided with the discharge orifice 311 inside and outside insertion closure sliding sleeve 30.Drainage
The setting of passage 90 and discharge orifice 311 is to need starting the top of ball 40 ' to recover full well circulation after by-pass prot 200 is blocked
Carry out building the pressure operation so as at least discharge what is started ball 40 ' and set.When closing the closing by-pass prot 200 of sliding sleeve 30, drilling fluid
Discharge orifice 311 is flowed to by drainage channel 90, preferably, discharge orifice 311 is less than to the distance of closure sliding sleeve 30 upper end to be opened
The lower end of dynamic sliding sleeve 30 to boss 100 distance, thus compression zone 320 completely disengage valve body 10, thus when the closure envelope of sliding sleeve 30
By-pass prot 200 is closed, under closure ball 321 ' coordinates with ball supporting part 321, the drilling fluid above ball 321 ' is closed and passes through drainage channel
90 and discharge orifice 311 and flow to start ball 40 ' top, then by improve the power of circulation of drilling fluid pump increase start
The pressure of drilling fluid above ball, start the release ball seat 40 of sliding sleeve 30 when the pressure is not less than three limiting pressures, so as to recover
Full well circulation.
Preferably, as shown in figure 1, closure sliding sleeve 30 is included in the butting section 300 of closure sliding sleeve 30 bottom, against
The radical length in portion 300 and the radical length for starting sliding sleeve 20 are substantially similar.Further, closing sliding sleeve 30 also includes being in
The aerial drainage portion 310 at the middle part of sliding sleeve 30 and the compression zone 320 in closure sliding sleeve 30 top are closed, relative to the outer of butting section 300
Side, close to the axis of valve body 10, discharge orifice 311 is arranged at aerial drainage portion 310 for the outside in aerial drainage portion 310, and compression zone 320 is from aerial drainage portion
310 extend internally to form ball supporting part 321.While reducing the closure diameter of ball 321 ' so that drainage channel 90 is more wider,
Drainage speed is faster.
In one embodiment, the side wall of valve body 10 is provided with seal 80, closes before interim circulation, compression zone 320
Lateral surface be attached on seal 80.Seal 80 can use the material that can arbitrarily ensure that valve body and seal are brought into close contact
Material, such as rubber bodies or rigid material, for the purpose of improving the adhesion strength between seal and compression zone 320.In addition,
Start sliding sleeve 20, closure sliding sleeve 30, ball seat 40 can use drilling tool common used material, such as hard alloy etc., startup ball 40 ' and
Ball 321 ' is closed using the metal ball with constant weight, such as copper ball.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.The invention is not limited in Wen Zhonggong
The specific embodiment opened, but all technical schemes including falling within the scope of the appended claims.
Claims (8)
- A kind of 1. drilling tool by-passing valve, it is characterised in that including：Valve body, it is configured to hollow pipeline section, and the side wall of the valve body is provided with the boss to extend internally and penetrates the side wall By-pass prot,Start slide bushing assembly, it is arranged at the valve inner, and can block the by-pass prot, is followed temporarily when needing to establish The startup slide bushing assembly is moved downward on the boss to open the by-pass prot during ring；Slide bushing assembly is closed, it is arranged at the valve inner, the closure sliding sleeve group when needing to close the interim circulation Part is moved down to block the by-pass prot；The closure slide bushing assembly includes closure sliding sleeve, ball supporting part and closure ball, and the ball supporting part is formed at described close Close on sliding sleeve, the closure ball coordinates with the drilling fluid that dams with the ball supporting part, when the closure ball and the ball supporting part Coordinate, the pressure above the closure ball when be not less than the second limiting pressure the sliding sleeve that closes be displaced downwardly to the startup sliding sleeve, To close the by-pass prot, and the diameter of the closure ball is more than the diameter for starting ball；The closure sliding sleeve is included in the butting section of the closure sliding sleeve bottom, the aerial drainage portion in the middle part of the closure sliding sleeve With the compression zone in the closure sliding sleeve top, relative to the outer end of the butting section, the outer end in the aerial drainage portion and described The outer end of compression zone close to the valve body axis, with the outside in the aerial drainage portion and the compression zone formed drainage channel, The aerial drainage portion is provided with the discharge orifice penetrated inside and outside the closure sliding sleeve, when the closure sliding sleeve closes the by-pass prot, Drilling fluid flows to the discharge orifice by the drainage channel.
- 2. drilling tool by-passing valve according to claim 1, it is characterised in that the startup slide bushing assembly includes blocking Startup sliding sleeve, ball seat and the startup ball of the by-pass prot, the ball seat are connected to the startup sliding sleeve, and the startup ball can Coordinate with the ball seat with the drilling fluid that dams, when the startup ball coordinates with the ball seat, the pressure started above ball is not The startup sliding sleeve is moved downward to the boss during less than the first limiting pressure, to open the by-pass prot.
- 3. drilling tool by-passing valve according to claim 2, it is characterised in that the startup sliding sleeve is connected by the first tightening piece The side wall of the valve body is connected to, to block the by-pass prot from the inner side of the valve body, first limiting pressure is cutting institute State the minimum shearing force of the first tightening piece.
- 4. drilling tool by-passing valve according to claim 3, it is characterised in that the closure sliding sleeve is connected by the second tightening piece The side wall of the valve body is connected to, second limiting pressure is to cut the minimum shearing force of second tightening piece, and described The lower end for closing sliding sleeve contacts with the startup sliding sleeve.
- 5. drilling tool by-passing valve according to claim 4, it is characterised in that the ball seat is connected to by the 3rd tightening piece The startup sliding sleeve, when the startup ball coordinates with the ball seat, the pressure that the ball seat is born is not less than the 3rd limiting pressure Shi Suoshu, which starts sliding sleeve, can at least discharge the startup ball, and at least described ball that starts can pass through the inside of the boss Move down.
- 6. drilling tool by-passing valve according to claim 5, it is characterised in that the 3rd limiting pressure is cuts described the The minimum shearing force of three tightening piece, and the 3rd limiting pressure is more than first limiting pressure and second limit pressure Power.
- 7. drilling tool by-passing valve according to claim 1, it is characterised in that before the closing interim circulation, it is described by The side wall sealing of splenium and the valve body coordinates.
- 8. drilling tool by-passing valve according to claim 1, it is characterised in that the discharge orifice to the closure sliding sleeve upper end Distance be less than it is described startup sliding sleeve lower end to the boss distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273626.XA CN105178912B (en) | 2014-06-18 | 2014-06-18 | A kind of drilling tool by-passing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273626.XA CN105178912B (en) | 2014-06-18 | 2014-06-18 | A kind of drilling tool by-passing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105178912A CN105178912A (en) | 2015-12-23 |
| CN105178912B true CN105178912B (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410273626.XA Active CN105178912B (en) | 2014-06-18 | 2014-06-18 | A kind of drilling tool by-passing valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649548B (en) * | 2015-12-28 | 2018-01-02 | 中国石油天然气股份有限公司 | A kind of bypass short joint, down-hole equipment and its leak stopping or releasing method |
| CN113006750B (en) * | 2021-03-17 | 2021-12-17 | 西北大学 | Construction tool and method for improving recovery ratio of low-permeability reservoir horizontal well |
| CN115354988B (en) * | 2022-10-21 | 2023-01-03 | 中石化西南石油工程有限公司 | Quick leaking stoppage valve capable of being opened and closed repeatedly |
| CN117468888B (en) * | 2023-12-27 | 2024-03-19 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3868995A (en) * | 1973-06-15 | 1975-03-04 | Baker Oil Tools Inc | Sub-surface safety valve |
| US6095249A (en) * | 1995-12-07 | 2000-08-01 | Mcgarian; Bruce | Down hole bypass valve |
| CN201439703U (en) * | 2009-07-07 | 2010-04-21 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Bypass sliding sleeve |
| CN201474663U (en) * | 2009-08-15 | 2010-05-19 | 西部钻探克拉玛依钻井工艺研究院 | Ball seat open type bypass valve pocket |
| 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 |
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2014
- 2014-06-18 CN CN201410273626.XA patent/CN105178912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3868995A (en) * | 1973-06-15 | 1975-03-04 | Baker Oil Tools Inc | Sub-surface safety valve |
| US6095249A (en) * | 1995-12-07 | 2000-08-01 | Mcgarian; Bruce | Down hole bypass valve |
| CN201439703U (en) * | 2009-07-07 | 2010-04-21 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Bypass sliding sleeve |
| CN201474663U (en) * | 2009-08-15 | 2010-05-19 | 西部钻探克拉玛依钻井工艺研究院 | Ball seat open type bypass valve pocket |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN105178912A (en) | 2015-12-23 |
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