CN103306620A - Pressure-transmitting pin snapping and fracturing automatic grouting valve float valve - Google Patents
Pressure-transmitting pin snapping and fracturing automatic grouting valve float valve Download PDFInfo
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- CN103306620A CN103306620A CN 201310261236 CN201310261236A CN103306620A CN 103306620 A CN103306620 A CN 103306620A CN 201310261236 CN201310261236 CN 201310261236 CN 201310261236 A CN201310261236 A CN 201310261236A CN 103306620 A CN103306620 A CN 103306620A
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Abstract
The invention discloses a pressure-transmitting pin snapping and fracturing automatic grouting valve float valve. The automatic grouting valve float valve is characterized in that a float valve and a valve support mechanism are mounted in a float valve joint, a valve body seat of the float valve is hinged to a valve, the elasticity of a torsion spring on both the valve and the valve body seat enables the valve to close the valve body seat when the valve is in the free state; a support bar in a valve support mechanism, through which a valve hinge mount and a valve body hinge mount, supports the elasticity of the torsion spring to enable that the valve and the valve body seat can not be closed; the valve of the float valve is in the semi-opened state to form a fluid flow passage, so that the purpose of automatic grouting can be achieved. When the pump is started after tripping, or well kick occurs in a pipe, and the force acted on the valve by fluid once the blowout slurry is reversely sprayed is larger than the tensile strength of the support bar, the support bar is snapped and fractured, and the valve, which loses the supporting force after pump stop or during well kick and blowout to be in the free state, is promptly closed under the action of the resultant force of the spring force and the like. As pressure transmitting small holes are obliquely formed in the valve, pressure of fluid inside and outside the valve after the valve is closed is transmitted.
Description
Technical field
The mode of manual grouting is taked in operation to the present invention relates to not stop lower brill (lower oil pipe) in brill (lower oil pipe) process under oil drilling, but automatic grouting.The flow velocity of turn on pump circulation or well kick, blowout tube fluid plays the effect of ball-and-seat when reaching certain value, the generation of gas blowout accident in the pipe in the time of can stopping to pull out of hole can accurately record again standpipe pressure and ask and calculate accurately strata pressure behind control well kick, blowout closing well.
Background technology
Under oil drilling, bore the effect of only playing ball-and-seat in (lower oil pipe) process because of scene valve type float valve commonly used, and the restriction because of its bearing capacity and drilling rod (oil pipe) collapsoing strength, lower brill (lower oil pipe) is to prevent from easily causing when valve type float valve from causing losing efficacy because the pressure that bears is excessive well kick even gas blowout accident in the pipe during to certain well depth, anti-drilling rod (oil pipe) is squeezed to be ruined and causes the reason such as other complex accident, must stop lower brill (lower oil pipe) operation and in drilling rod (oil pipe), pour into mud, to avoid the generation of above-mentioned many complexity and accident.In addition because of the existence of ball-and-seat, drilling rod (oil pipe) transfer in the process for fear of the annular space that causes because of drilling rod (oil pipe) row of closing high return that speed causes that excessive surge pressure causes the complex situations such as leakage control drilling rod (oil pipe) lowering velocity.This has not only delayed a large amount of lower brills (lower oil pipe) time, has increased workman's labour intensity, and because of the movable untimely differential sticking accident that causes of drilling rod, retarding oil gas is explored progress in the time of also might stopping tripping operation toward the interior mud grouting of drilling rod.
Control well kick, valve type float valve because of scene usefulness after the blowout is complete closed, strata pressure can not be delivered on the standpipe pressure table by fluid column and try to achieve standpipe pressure, the method that can only take to open the circulation of throttle valve control small displacement is tried to achieve the closing well standpipe pressure, but the closing well standpipe pressure of trying to achieve like this is inaccurate, the strata pressure of namely trying to achieve also is inaccurate, the inaccurate well killing fluid density that goes out according to inaccurate formation pressure calculation can not ensure the once successful of kill-job, also might cause because well killing fluid density is inaccurate leakage and other complexity or accident in the Well Killing Process.
Summary of the invention
For the problems of the above-mentioned existence of on-the-spot valve type float valve, but having aimed to provide a kind of pressure transmission pin, purpose of the present invention draws break-off type automatic grouting valve float valve.Its principle one is to make the valve of autoshutdown valve type float valve be in half-open position according to the principle that support bar has certain tensile strength balance to live button spring power, forms the fluid passage, realizes the purpose of automatic grouting.The support bar quilt was pulled off disconnected when well kick, blowout mud acted on power on the valve greater than the tensile strength of support bar in instantly finishing drilling turn on pump direct circulation or the pipe when spraying.Valve is in time closed the purpose that plays ball-and-seat after the termination of pumping under the effect of spring force, avoid existing with valve type float valve can not automatic grouting drawback.The 2nd, open an aperture angled with the float valve axis at valve, this aperture neither affects closing of valve, can after closing, transmit at valve again the pressure of liquid inside and outside the valve, can in successful control valve, accurately record strata pressure after the well kick blowout, for calculating accurately well killing fluid density, kill-job once successfully provides technical basis.
The objective of the invention is to finish like this:
But a kind of pressure transmission pin draws break-off type automatic grouting valve float valve, comprise the float valve joint, float valve and valve supporting mechanism form, float valve is by upper valve body, upper sealing ring, gasket ring, middle sealing ring, the valve valve block, valve, torsion spring, lower seal, pressure transmission hole consists of, the valve supporting mechanism is by the valve hinge seat, pin, support bar, pin, the valve body hinge seat consists of, upper valve body and the screwed connection of valve valve block, upper sealing ring, gasket ring, middle sealing ring is enclosed within on the upper valve body, the internal diameter of the internal diameter of float valve and float valve joint is basically identical, in the float valve inner nosepiece wall convex circular bead surface is arranged, float valve places in the float valve joint, the lower seal lower end that is enclosed within valve valve block lower end withstands on and forms sealing on the convex circular bead surface, the small end of tool joint withstood float valve when the float valve joint was connected with drilling tool, be hinged with valve at the valve valve block, one end of torsion spring is supported on the valve, the other end of torsion spring is supported on the valve valve block, the elastic force of torsion spring can make the closed firmly valve valve block of valve when valve is in free state, the valve top is welded with the valve hinge seat, be welded with the valve body hinge seat on the valve valve block, the two ends of support bar have pin-and-hole, use respectively pin and pin and valve hinge seat, the valve body hinge seat connects, and supporting valve can not be closed with the valve valve block.
The beneficial effect of advantage of the present invention and generation is:
1, the present invention is simple in structure, adopts conventional part assembling, is easy to processing, reasonable and compact in structure, operation sequence is simple, easy-to-use, the maintain and replace accessory convenient, effectively prevented drilling fluid, landwaste and high-pressure oil gas stream by backflow in the drilling tool, and cost is low, safe and reliable.
2, after the field trial of the present invention success, not only do not stop lower brill (lower oil pipe) the operation operation of being in the milk when applying, because of not being the row of closing, reduced the pressure excitement, can accelerate drilling rod (oil pipe) lowering velocity.This not only can save a large amount of lower brills (lower oil pipe) time, also can avoid because stopping the lock of tool drilling of the movable untimely generation of tripping operation.
3, support bar of the present invention is the drillability material, and more tiny, easily arrive the shaft bottom by bit port, support bar after being drawn, fractureing can not cause any harm to drill bit by bit port during to the shaft bottom, save drilling period, greatly reduce post workman's labour intensity, accelerate the oil-gas exploration progress.
4, have the pressure transmission aperture on the valve, this aperture neither affects closing of valve, can transmit again the pressure of liquid inside and outside the valve after valve is closed, and can accurately record strata pressure after successfully controlling the well kick blowout, for calculating accurately well killing fluid density, kill-job once successfully provides technical basis.
Description of drawings
Fig. 1 is sectional view of the present invention.
Fig. 2 is valve supporting mechanism enlarged drawing of the present invention.
The specific embodiment
As shown in Figure 1, but a kind of pressure transmission pin draws break-off type automatic grouting valve float valve, comprise float valve joint 1, float valve and valve supporting mechanism form, float valve is by upper valve body 2, upper sealing ring 3, gasket ring 4, middle sealing ring 5, valve valve block 6, valve 7, torsion spring 8, lower seal 9, pressure transmission hole 15 consists of, the valve supporting mechanism is by valve hinge seat 10, pin 11, support bar 12, pin 13, valve body hinge seat 14 consists of, upper valve body 2 is used screwed connection with valve valve block 6, upper sealing ring 3, gasket ring 4, middle sealing ring 5 is enclosed within on the upper valve body 2, the internal diameter of the internal diameter of float valve and float valve joint 1 is basically identical, at float valve joint 1 inwall the convex circular bead surface is arranged, float valve places in the float valve joint 1, lower seal 9 lower ends that are enclosed within valve valve block 6 lower ends withstand on and form sealing on the convex circular bead surface, the small end of tool joint withstood float valve when float valve joint 1 was connected with drilling tool, be hinged with valve 7 at valve valve block 6, one end of torsion spring 8 is supported on the valve 7, the other end of torsion spring 8 is supported on the valve valve block 6, the elastic force of torsion spring 8 can make valve 7 closed firmly valve valve blocks 6 when valve 7 is in free state, valve 7 tops are welded with valve hinge seat 10, be welded with valve body hinge seat 14 on the valve valve block 6, the two ends of support bar 12 have pin-and-hole, use respectively pin 11 and pin 13 and valve hinge seat 10, valve body hinge seat 14 connects, support valve 7 can not with valve valve block 6 closures.
One end of support bar 12 is connected with valve hinge seat 10 usefulness pins 11, and the other end is connected with valve body hinge seat 14 usefulness pins 13, makes valve 7 be in half-open position and forms the fluid passage, reaches the purpose of automatic grouting during lower brill.When turn on pump direct circulation and well kick, blowout mud flow backwards, the power that fluid acted on the valve 7 when flow velocity reached certain value can pull off support bar 12 disconnected, valve 7 is closed voluntarily with valve valve block 6 under the effect of button spring 8 elastic force etc., play the effect of ball-and-seat, prevented that effectively drilling fluid, landwaste and high-pressure oil gas stream from causing managing interior blowout by refluxing in the drilling tool.
The pressure transmission aperture 15 of tiltedly opening on the valve 7 neither affects closing of valve 7, can after closing, transmit at valve 7 again the pressure of valve 7 inside and outside liquid, can accurately record strata pressure after successfully controlling the well kick blowout, for calculating accurately well killing fluid density, kill-job once successfully provides technical basis.
Claims (1)
1. but a pressure transmission pin draws break-off type automatic grouting valve float valve, comprise float valve joint (1), float valve and valve supporting mechanism form, float valve is by upper valve body (2), upper sealing ring (3), gasket ring (4), middle sealing ring (5), valve valve block (6), valve (7), torsion spring (8), lower seal (9), pressure transmission hole (15) consists of, the valve supporting mechanism is by valve hinge seat (10), pin (11), support bar (12), pin (13), valve body hinge seat (14) consists of, upper valve body (2) is used screwed connection with valve valve block (6), upper sealing ring (3), gasket ring (4), middle sealing ring (5) is enclosed within on the upper valve body (2), the internal diameter of the internal diameter of float valve and float valve joint (1) is basically identical, at float valve joint (1) inwall the convex circular bead surface is arranged, float valve places in the float valve joint (1), lower seal (9) lower end that is enclosed within valve valve block (6) lower end withstands on and forms sealing on the convex circular bead surface, float valve joint (1) when being connected with drilling tool the small end of tool joint withstand float valve, be hinged with valve (7) at valve valve block (6), one end of torsion spring (8) is supported on the valve (7), the other end of torsion spring (8) is supported on the valve valve block (6), the elastic force of torsion spring (8) can make the closed firmly valve valve block (6) of valve (7) at valve (7) when being in free state, valve (7) top is welded with valve hinge seat (10), be welded with valve body hinge seat (14) on the valve valve block (6), the two ends of support bar (12) have pin-and-hole, use respectively pin (11) and pin (13) and valve hinge seat (10), valve body hinge seat (14) connects, support valve (7) can not with valve valve block (6) closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310261236 CN103306620A (en) | 2013-06-16 | 2013-06-16 | Pressure-transmitting pin snapping and fracturing automatic grouting valve float valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310261236 CN103306620A (en) | 2013-06-16 | 2013-06-16 | Pressure-transmitting pin snapping and fracturing automatic grouting valve float valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103306620A true CN103306620A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310261236 Pending CN103306620A (en) | 2013-06-16 | 2013-06-16 | Pressure-transmitting pin snapping and fracturing automatic grouting valve float valve |
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| CN (1) | CN103306620A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996279A (en) * | 2017-06-02 | 2017-08-01 | 成都市卓新实业有限公司 | A kind of self-priming paddle back pressure valve |
| CN108240198A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil well pump crosses pump well washing apparatus |
-
2013
- 2013-06-16 CN CN 201310261236 patent/CN103306620A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240198A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil well pump crosses pump well washing apparatus |
| CN108240198B (en) * | 2016-12-26 | 2024-03-26 | 中国石油天然气股份有限公司 | Pump-passing well-flushing device for oil pump |
| CN106996279A (en) * | 2017-06-02 | 2017-08-01 | 成都市卓新实业有限公司 | A kind of self-priming paddle back pressure valve |
| CN106996279B (en) * | 2017-06-02 | 2023-05-23 | 成都市卓新实业有限公司 | Self-grouting back-pressure valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |