CN105178912A - Bypass valve for drilling tools - Google Patents
Bypass valve for drilling tools Download PDFInfo
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- CN105178912A CN105178912A CN201410273626.XA CN201410273626A CN105178912A CN 105178912 A CN105178912 A CN 105178912A CN 201410273626 A CN201410273626 A CN 201410273626A CN 105178912 A CN105178912 A CN 105178912A
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Abstract
The invention relates to a bypass valve for drilling tools, comprising a valve body, a starting sliding sleeve assembly and a closing sliding sleeve assembly. The valve body is configured to be a hollow pipe segment, a side wall of the valve body is provided with a boss extending inward and a bypass hole penetrating the side wall; the starting sliding sleeve assembly is arranged inside the valve body and capable of blocking the bypass hole and moves down to the boss to uncover the bypass hole when establishing a temporary cycle is required; the closing sliding sleeve assembly is arranged inside the valve body and moves down to block the bypass hole when closing the temporary cycle is required. The bypass valve is high in reliability and good in safety, and production cost can be lowered.
Description
Technical field
The invention belongs to Oil & Gas Drilling Technology field, particularly a kind of drilling tool bypass valve.
Background technology
In the drilling process carrying out oil, natural gas, shale gas or coal bed gas, when down-hole runs into complex situations, such as bit port blocking, mud motor damage and plugging operations time, need to carry out Rapid Circulation temporarily, and before full well circulation (continuation drilling well) of recovery, often need frequently to make a trip, cause mud loss large, drilling period extends, and adds drilling well the risk and cost.The bypass valve adopted in prior art mostly can only set up interim Rapid Circulation, but will the trip-out of at least 1 time and lower brill before recovering the circulation of full well.
Patent US6095249 discloses pressure control spring formula can switch drilling tool by-pass valve.The main feature of this drilling tool bypass valve: when bypass valve opened by needs, increase pump delivery, when in drilling tool, flow velocity reaches certain value, piston moves downward at fluid forces, by-pass prot is opened, reduce pump delivery when bypass valve closed by needs, piston resets under spring force, and by-pass prot is closed.Shortcoming: spring failure then can not close by-pass prot; Spring cavity needs to arrange spiracle, adds down-hole risk.
Therefore, be badly in need of that a kind of reliability is high, security performance good and the drilling tool bypass valve of cost of production can be reduced.
Summary of the invention
For above-mentioned problem, the present invention proposes a kind of drilling tool bypass valve, when adopting this drilling tool bypass valve to carry out drillng operation, reliability is high, and security performance is good, can reduce cost of production.
The drilling tool bypass valve that the present invention proposes comprises: valve body, it is configured to the pipeline section of hollow, the sidewall of valve body is provided with the by-pass prot of boss and the through sidewall extended internally, start slide bushing assembly, it is arranged at valve inner, and can shutoff by-pass prot, set up interim circulation time when needs and start slide bushing assembly and be moved downward on described boss to open by-pass prot; Closed slide bushing assembly, it is arranged at valve inner, closes interim circulation time close slide bushing assembly and move down with shutoff by-pass prot when needs.
When adopting drilling tool bypass valve of the present invention to carry out drillng operation, this drilling tool bypass valve is mounted on drill collar, need to set up interim circulation time and open by-pass prot by starting moving down of slide bushing assembly, set up interim circulation thus, close interim circulation time when needs and move down closedown by-pass prot by closed sliding sleeve, thus recover the circulation of full well.Owing to not adopting spring structure to make the reliability of this drilling tool bypass valve work be improved, be beneficial to safety in production, and avoid frequently making a trip, shorten the production time, reduce cost of production.
In one embodiment, starting that slide bushing assembly comprises can the startup sliding sleeve of shutoff by-pass prot, ball seat and start ball, ball seat is connected to startup sliding sleeve, start ball and can coordinate with ball seat the drilling fluid that dams, when startup ball coordinates with ball seat, the pressure started above ball starts sliding sleeve when being not less than the first limiting pressure and is moved downward to boss, to open by-pass prot.Can adopt thus to drop into and start ball to retain drilling fluid, thus drill string is temporarily divided into upper and lower two parts, then above pressurization startup ball, the pressure of drilling fluid makes startup sliding sleeve move down thus by-pass prot be opened, and sets up and circulates temporarily, simple to operate, be easy to realize.
In one embodiment, start sliding sleeve is connected to valve body sidewall by the first tightening piece, with the inner side shutoff by-pass prot from valve body, the first limiting pressure is the minimum shearing force of cutting off the first tightening piece.Adopt the structure making to start sliding sleeve establishment in such a way simple, be convenient to the foundation of interim circulation.
In one embodiment, closed slide bushing assembly comprises closed sliding sleeve, ball support portion and closed ball, ball support portion is formed on closed sliding sleeve, closed ball coordinates with ball support portion the drilling fluid that dams, when closed ball coordinates with ball support portion, pressure above closed ball closes sliding sleeve when being not less than the second limiting pressure and is displaced downwardly to startup sliding sleeve, and with closed by-pass prot, and the diameter of closed ball is greater than the diameter starting ball.The mode of same employing pitching retains drilling fluid, and closes sliding sleeve when being not less than the second limiting pressure by the pressure of the drilling fluid above closed ball and move down, thus by-pass prot is opened by closed sliding sleeve, recovers the circulation of full well.
In one embodiment, closed sliding sleeve is connected to the sidewall of valve body by the second tightening piece, the second limiting pressure is the minimum shearing force of cutting off the second tightening piece, and the lower end of closed sliding sleeve contacts with startup sliding sleeve.Make the structure of closed slide bushing assembly simple thus, be easy to shutoff by-pass prot, the lower end of closed sliding sleeve is beneficial to the accurate control of closing by-pass prot operation in starting sliding sleeve contact in addition.
In one embodiment, ball seat is connected to startup sliding sleeve by the 3rd tightening piece, when startup ball coordinates with ball seat, start sliding sleeve when the pressure that ball seat bears is not less than the 3rd limiting pressure and at least can discharge startup ball, and at least startup ball can move down through the inside of boss.Making startup slide bushing assembly structure make to recover the simple to operate of full well circulation thus simply simultaneously.
In one embodiment, the 3rd limiting pressure is the minimum shearing force of cutting off the 3rd tightening piece, and the 3rd limiting pressure is greater than the first limiting pressure and the second limiting pressure.The reliability of drilling tool bypass valve work can be ensured thus.
In one embodiment, closed sliding sleeve comprises the butting section being in closed sliding sleeve bottom, be in the earial drainage portion in the middle part of closed sliding sleeve and the compression zone being in closed sliding sleeve top, relative to the outer end of butting section, the outer end in earial drainage portion and the outer end of compression zone are near the axis of valve body, and form drainage channel with the outside in earial drainage portion and compression zone, earial drainage portion is provided with the discharge orifice inside and outside through closed sliding sleeve, when closed sliding sleeve closes by-pass prot, drilling fluid flows to discharge orifice by drainage channel.Thus when closed sliding sleeve closes by-pass prot, because closed ball coordinates and the drilling fluid that dams with ball support portion, drilling fluid above so closed ball flow to the below of closed ball by drainage channel and discharge orifice, start the space of the top of ball, then the power by improving circulation of drilling fluid pump increases the pressure started above ball, start sliding sleeve release ball seat when this pressure is not less than the 3rd limiting pressure, thus recover the circulation of full well.
In one embodiment, before closing interim circulation, the sidewall of compression zone and valve body is sealed and matched.Guarantee the sealing laminating between valve body and closed sliding sleeve thus, be beneficial to building the pressure before interim circulation is closed, improve the reliability of drilling tool bypass valve work.
In one embodiment, discharge orifice to the distance closing sliding sleeve upper end is less than the distance of lower end to boss of startup sliding sleeve.Thus when closed sliding sleeve shutoff by-pass prot, compression zone departs from valve body, and drilling fluid flow to the below of closed ball by drainage channel and discharge orifice, the carrying out of resuming work so that full well circulates.
In this application, term " interior ", " outward " are for the axis of valve body, and the direction pointing to valve axis is " interior ", and direction is in contrast " outward ".
Compared with prior art, the invention has the advantages that, the control to bypass valve is realized by throwing motion, movement particularly by starting sliding sleeve realizes opening of by-pass prot, interim circulation is set up with this, thus carry out the operations such as leak stopping, close by-pass prot by the movement of closed sliding sleeve after the operations such as leak stopping complete, thus recover the circulation of full well.Which thereby enhance reliability and the safety of bypass valve work.This bypass valve arrangement is simple in addition, flexible operation, and the Stress control opening bypass valve, closedown bypass valve and the full well circulation of the recovery that builds the pressure is realized, therefore, it is possible to open and close bypass valve rapidly by the power improving circulation of drilling fluid pump after throwing motion.Further, when setting up interim circulation, need not pull out of hole and can complete the operations such as leak stopping, improve drilling well production efficiency, reduce cost of production.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 is the sectional view of drilling tool bypass valve according to a preferred embodiment of the present invention;
Fig. 2 is the schematic diagram of the drilling tool bypass valve input startup ball to Fig. 1;
Fig. 3 is the schematic diagram that the by-pass prot of the drilling tool bypass valve of Fig. 1 is opened;
Fig. 4 is the schematic diagram that the by-pass prot of the drilling tool bypass valve of Fig. 1 is closed;
Fig. 5 is the schematic diagram that the drilling tool bypass valve of Fig. 1 builds the pressure to set up the circulation of full well.
In the drawings, identical component is indicated by identical Reference numeral.Accompanying drawing is not according to the scale of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the drilling tool bypass valve that the present invention proposes comprises valve body, starts slide bushing assembly and closed slide bushing assembly.Drilling tool bypass valve of the present invention and various piece thereof will be described in detail belows.
As shown in Figure 1, valve body 10 is formed as the pipeline section of hollow, and the diameter cardinal principle of pipeline section and the equal diameters of drill collar (not shown), so that valve body 10 is connected on drill collar.As shown in the figure, under normal drilling condition, drilling fluid enters in drill collar by valve body 10, then sends into drill bit, is carried into ground with the landwaste drilled through by drill bit from shaft bottom.The sidewall of valve body 10, should be exactly inside wall is provided with the boss 100 extended internally, boss 100 can be configured as one with valve body, the radical length of boss can be at random, as long as can position-limiting action be played to startup sliding sleeve and no longer continue to move down, in order to improve the reliability of this boss 100 position-limiting action, preferably, the radial dimension of boss 100 is greater than the radial dimension starting sliding sleeve 20.In general, in order to make full use of the space of valve body, boss 100, near the lower end of valve body 10, reduces the axial length of valve body 10 as much as possible with this.In addition, as shown in the figure, the sidewall of valve body 10 is also provided with the by-pass prot 200 of through sidewall, the inside of valve body 10 is communicated in the inside of drilling rod.The outside of valve body 10 is annular spaces, and namely drill-in fluid sprays from bit port, and cutting carring returns the runner on ground from annular space, and therefore under normal circumstances, the pressure in the pressure of annular space and valve body 10 can not differ from too many, guarantees the safety of drilling tool and drilling well work with this.But, when occurring that bit port blocks, can open by-pass prot 200 is communicated with inside and outside valve body 10, set up interim circulation, the drilling fluid of drilling rod inside is derived in time, next, flushing liquor is imported in drilling rod, through by-pass prot 200 and annular space back flush drill bit, also or pull out of hole, with this solve bit port blocking problem.And when needs plugging operations, by-pass prot 200 can be opened, set up and circulate temporarily, after being derived by the drilling fluid of drilling rod inside, in drilling rod, then throw in sealing agent, sealing agent enters into shaft bottom with shutoff leak by by-pass prot 200 and annular space.Utilize this drilling well bypass valve can process the temporary derangement occurred in drilling process in time in visible drilling process, for drillng operation is saved time and cost.
Start the inside that slide bushing assembly is arranged at valve body 10, shutoff by-pass prot is used for when drilling well normally works, when interim circulation time set up by needs, start slide bushing assembly to move down, until by-pass prot 200, without starting the shutoff of slide bushing assembly, thus sets up interim circulation when it is resisted against on boss 100.As preferably, starting that slide bushing assembly comprises can the startup sliding sleeve 20 of shutoff by-pass prot, ball seat 40 and start ball 40 ', ball seat 40 is connected to and starts sliding sleeve 20, start ball 40 and do not participate in work in the normal drilling well course of work, when by-pass prot 200 opened by needs, to start ball 40 ' puts in valve body 10, starts ball 40 ' and coordinates for the drilling fluid that dams with ball seat 40, with operation of carrying out building the pressure, startup sliding sleeve 20 is moved down and by-pass prot 200 opened.When startup ball 40 ' coordinates with ball seat 40, start sliding sleeve 20 when the pressure started above ball 40 ' is not less than the first limiting pressure and be moved downward to boss 100, thus open by-pass prot 200.
As shown in Figure 1, start sliding sleeve 20 is connected to valve body 10 sidewall by the first tightening piece 50, when drilling well normal operation, start the inner side shutoff by-pass prot 200 of sliding sleeve 20 from valve body 10, thus recover the circulation of full well.First tightening piece 50 can be the tightening piece such as normally used pin, can rupture when the first tightening piece 50 bears limiting pressure, thus starts sliding sleeve 20 meeting slide downward.Particularly, when needs open by-pass prot 200 time, starting ball 40 ' from input enters in valve body 10, and drop on valve seat 40, thus separate starting the space tightness of ball upper and lower 40 ' (see Fig. 2), increase the pressure starting the more than 40 ' space of ball, when increasing to the first tightening piece 50 and can not bearing, when being namely not less than the first limiting pressure, such as 5MPa, first tightening piece 50 ruptures, thus release starts sliding sleeve 20 moves down until touch boss 100, and boss 100 is for starting sliding sleeve 20 spacing.Realize opening of by-pass prot 200 by above step, the distance that startup sliding sleeve 20 moves down needs to ensure opening all sidedly (see Fig. 3) smoothly of by-pass prot 200.
As preferred embodiment, it is inner that closed slide bushing assembly is arranged at valve body 10, and when interim circulation time closed by needs, closed slide bushing assembly moves down with shutoff by-pass prot 200.As preferably, closed slide bushing assembly comprises closed sliding sleeve 30, ball support portion 321 and closed ball 321 ', ball support portion 321 is formed on closed sliding sleeve 30, can as a part for closed sliding sleeve 30, also can be connected on closed sliding sleeve 30 closed ball 321 ' by connector and not participate in work in normal drilling process, close interim circulation time when needs and will close ball 321 ' and be fed in valve body 10.Closed ball 321 ' moves on ball support portion 321 with drilling fluid, the drilling fluid that dams is coordinated with ball support portion 321, when closed ball 321 ' coordinates with ball support portion 321, the pressure of closed ball 321 ' top closes sliding sleeve 30 and moves down until abut on startup sliding sleeve 20 when being not less than the second limiting pressure, thus shutoff by-pass prot 200, and the diameter of closed ball 321 ' is greater than the diameter starting ball 40 ', what ensure by-pass prot 200 thus opens the reliability with shutoff action.
As shown in Figure 1, as preferably, close sliding sleeve 30 is connected to valve body 10 sidewall by the second tightening piece 60, the effect of closed sliding sleeve 30 is exactly close by-pass prot when by-pass prot 200 closed by needs, thus recovers the circulation of full well, proceeds drilling well work.Second tightening piece 60 also can be the tightening piece such as pin.As shown in the figure, further, the lower end of closed sliding sleeve 30 contacts with startup sliding sleeve 20, makes closed sliding sleeve 30 speed ground shutoff by-pass prot 200 with this, thus can by closed sliding sleeve 30 quick closedown by-pass prot 200.When the closed ball 321 ' (see Fig. 1 and Fig. 4) of input, closed ball 321 ' and ball support portion 321 coordinate, increase the pressure of closed ball 321 ' top, the such as 5MPa when pressure increase can not be born to the second tightening piece 60, namely during the second limiting pressure, the second tightening piece is cut disconnected, closed sliding sleeve 30 loses and retrains and slide downward, be resisted against the upper end starting sliding sleeve 20, by-pass prot 200 closed thus, circulate end temporarily.
Further, ball seat 40 is connected to startup sliding sleeve the 20, three tightening piece by the 3rd tightening piece 70 can be pin etc.After by-pass prot 200 is closed sliding sleeve 30 shutoff, start ball 40 ' still to coordinate with ball seat 40, now the space of drill string inside is still divided into upper and lower two spaces by startup ball 40 ', now increase the pressure of the drilling fluid starting ball 40 ' top, start sliding sleeve 20 when the pressure that ball seat 40 bears is not less than the 3rd limiting pressure and at least can discharge startup ball 40 ', and at least startup ball 40 ' can move down through the inside of boss 100.Thus recover the circulation of full well.As preferably, the 3rd limiting pressure is the minimum shearing force of cutting off the 3rd tightening piece, and the 3rd limiting pressure is greater than the first limiting pressure and the second limiting pressure.The pressure durations starting ball 40 ' top increases to the ultimate strength of the 3rd tightening piece 70, such as, cut disconnected during 10MPa, starts ball 40 ' and falls together with ball seat 40, through the inside of boss 100, finally drop on the one-way valve seat on drill bit top, thus set up the circulation of full well, continue drilling well work.
Preferably, as shown in Figure 1, Figure 4 and Figure 5, closed sliding sleeve 30 comprises the butting section 300 being in closed sliding sleeve 30 bottom, be in the earial drainage portion 310 in the middle part of closed sliding sleeve 30 and the compression zone 320 being in closed sliding sleeve 30 top, relative to the outer end of butting section 300, the outer end in earial drainage portion 310 and the outer end of compression zone 320 are near the axis of valve body 10, and form drainage channel 90 with the outside in earial drainage portion 310 and compression zone 320, earial drainage portion 310 is provided with the discharge orifice 311 inside and outside through closed sliding sleeve 30.The setting of drainage channel 90 and discharge orifice 311 after shutoff by-pass prot 200 in order to recover the circulation of full well need to carry out in startup ball 40 ' top to build the pressure operation thus at least release start ball 40 ' and arrange.When closed sliding sleeve 30 closes by-pass prot 200, drilling fluid flows to discharge orifice 311 by drainage channel 90, as preferably, discharge orifice 311 to the distance of closed sliding sleeve 30 upper end be less than start sliding sleeve 30 lower end to the distance of boss 100, compression zone 320 departs from valve body 10 completely thus, thus when closed sliding sleeve 30 closes by-pass prot 200, under closed ball 321 ' coordinates with ball support portion 321, the drilling fluid of closed ball 321 ' top flow to the top starting ball 40 ' by drainage channel 90 and discharge orifice 311, then the power by improving circulation of drilling fluid pump increases the pressure starting drilling fluid above ball, start sliding sleeve 30 when this pressure is not less than the 3rd limiting pressure and discharge ball seat 40, thus recover the circulation of full well.
As preferably, as shown in Figure 1, close sliding sleeve 30 and comprise the butting section 300 being in closed sliding sleeve 30 bottom, the radical length of butting section 300 is substantially similar with the radical length starting sliding sleeve 20.Further, closed sliding sleeve 30 also comprises the earial drainage portion 310 be in the middle part of closed sliding sleeve 30 and the compression zone 320 being in closed sliding sleeve 30 top, relative to the outside of butting section 300, the outside in earial drainage portion 310 is near the axis of valve body 10, discharge orifice 311 is arranged at earial drainage portion 310, and compression zone 320 extends internally to form ball support portion 321 from earial drainage portion 310.While reducing closed ball 321 ' diameter, make drainage channel 90 wider, drainage speed is faster.
In one embodiment, the sidewall of valve body 10 is provided with seal 80, and before closing interim circulation, the lateral surface of compression zone 320 is attached on seal 80.Seal 80 can adopt and can ensure arbitrarily the material that valve body and seal fit tightly, such as rubber bodies or rigid material, to improve for the purpose of the adhesion strength between seal and compression zone 320.In addition, startup sliding sleeve 20, closed sliding sleeve 30, ball seat 40 can adopt drilling tool common used material, such as carbide alloy etc., and startup ball 40 ' and closed ball 321 ' adopt the metal ball with constant weight, such as copper ball.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. a drilling tool bypass valve, is characterized in that, comprising:
Valve body, it is configured to the pipeline section of hollow, and the sidewall of described valve body is provided with the by-pass prot of boss and the through described sidewall extended internally,
Start slide bushing assembly, it is arranged at described valve inner, and can by-pass prot described in shutoff, starts slide bushing assembly and is moved downward on described boss when needs are set up to open described by-pass prot described in interim circulation time;
Closed slide bushing assembly, it is arranged at described valve inner, closes closed slide bushing assembly described in described interim circulation time move down with by-pass prot described in shutoff when needs.
2. drilling tool bypass valve according to claim 1, it is characterized in that, described startup slide bushing assembly comprise can by-pass prot described in shutoff startup sliding sleeve, ball seat and start ball, described ball seat is connected to described startup sliding sleeve, described startup ball can coordinate with described ball seat the drilling fluid that dams, when described startup ball coordinates with described ball seat, when the pressure above described startup ball is not less than the first limiting pressure, described startup sliding sleeve is moved downward to described boss, to open described by-pass prot.
3. drilling tool bypass valve according to claim 2, it is characterized in that, described startup sliding sleeve is connected to the sidewall of described valve body by the first tightening piece, with by-pass prot described in the inner side shutoff from described valve body, described first limiting pressure is the minimum shearing force of cutting off described first tightening piece.
4. drilling tool bypass valve according to claim 3, it is characterized in that, described closed slide bushing assembly comprises closed sliding sleeve, ball support portion and closed ball, described ball support portion is formed on described closed sliding sleeve, described closed ball coordinates with described ball support portion the drilling fluid that dams, when described closed ball coordinates with described ball support portion, when pressure above described closed ball is not less than the second limiting pressure, described closed sliding sleeve is displaced downwardly to described startup sliding sleeve, to close described by-pass prot, and the diameter of described closed ball is greater than the diameter of described startup ball.
5. drilling tool bypass valve according to claim 4, it is characterized in that, described closed sliding sleeve is connected to the sidewall of described valve body by the second tightening piece, described second limiting pressure is the minimum shearing force of cutting off described second tightening piece, and the lower end of described closed sliding sleeve contacts with described startup sliding sleeve.
6. drilling tool bypass valve according to claim 5, it is characterized in that, described ball seat is connected to described startup sliding sleeve by the 3rd tightening piece, when described startup ball coordinates with described ball seat, when the pressure that described ball seat bears is not less than the 3rd limiting pressure, described startup sliding sleeve at least can discharge described startup ball, and at least described startup ball can move down through the inside of described boss.
7. drilling tool bypass valve according to claim 6, is characterized in that, described 3rd limiting pressure is the minimum shearing force of cutting off described 3rd tightening piece, and described 3rd limiting pressure is greater than described first limiting pressure and described second limiting pressure.
8. the drilling tool bypass valve according to any one of claim 4 to 7, it is characterized in that, described closed sliding sleeve comprises the butting section being in described closed sliding sleeve bottom, be in the earial drainage portion in the middle part of described closed sliding sleeve and the compression zone being in described closed sliding sleeve top, relative to the outer end of described butting section, the outer end in described earial drainage portion and the outer end of described compression zone are near the axis of described valve body, drainage channel is formed with the outside in described earial drainage portion and described compression zone, described earial drainage portion is provided with the discharge orifice inside and outside through described closed sliding sleeve, when described closed sliding sleeve closes described by-pass prot, drilling fluid flows to described discharge orifice by described drainage channel.
9. drilling tool bypass valve according to claim 8, is characterized in that, before closing described interim circulation, the sidewall of described compression zone and described valve body is sealed and matched.
10. drilling tool bypass valve according to claim 8, is characterized in that, described discharge orifice to the distance of described closed sliding sleeve upper end is less than the distance of lower end to described boss of described startup sliding sleeve.
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 |
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| Publication Number | Publication Date |
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| CN105178912A true CN105178912A (en) | 2015-12-23 |
| CN105178912B CN105178912B (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410273626.XA Active CN105178912B (en) | 2014-06-18 | 2014-06-18 | A kind of drilling tool by-passing valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105649548A (en) * | 2015-12-28 | 2016-06-08 | 中国石油天然气股份有限公司 | Bypass nipple joint, downhole drilling tool, and seepage plugging method or jam releasing method of downhole drilling tool |
| CN110685640A (en) * | 2019-11-12 | 2020-01-14 | 陈爱民 | Switching sliding sleeve device for oil and gas exploitation, oil and gas exploitation tool and switching method for wall body through hole of oil and gas exploitation tool |
| CN113006750A (en) * | 2021-03-17 | 2021-06-22 | 西北大学 | Construction tool and method for improving recovery ratio of low-permeability reservoir horizontal well |
| CN115354988A (en) * | 2022-10-21 | 2022-11-18 | 中石化西南石油工程有限公司 | Multi-time switch quick leaking stoppage valve |
| CN117468888A (en) * | 2023-12-27 | 2024-01-30 | 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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| 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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| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649548A (en) * | 2015-12-28 | 2016-06-08 | 中国石油天然气股份有限公司 | Bypass nipple joint, downhole drilling tool, and seepage plugging method or jam releasing method of downhole drilling tool |
| 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 |
| CN110685640A (en) * | 2019-11-12 | 2020-01-14 | 陈爱民 | Switching sliding sleeve device for oil and gas exploitation, oil and gas exploitation tool and switching method for wall body through hole of oil and gas exploitation tool |
| CN110685640B (en) * | 2019-11-12 | 2024-06-04 | 陈爱民 | Switching sliding sleeve device for oil gas exploitation, oil gas exploitation tool and switching method of wall body through hole of oil gas exploitation tool |
| CN113006750A (en) * | 2021-03-17 | 2021-06-22 | 西北大学 | Construction tool and method for improving recovery ratio of low-permeability reservoir horizontal well |
| CN115354988A (en) * | 2022-10-21 | 2022-11-18 | 中石化西南石油工程有限公司 | Multi-time switch quick leaking stoppage valve |
| CN117468888A (en) * | 2023-12-27 | 2024-01-30 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
| 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 | Publication date |
|---|---|
| CN105178912B (en) | 2018-03-30 |
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