CN105587289A - Well flushing valve and tubular column with same - Google Patents
Well flushing valve and tubular column with same Download PDFInfo
- Publication number
- CN105587289A CN105587289A CN201610127421.XA CN201610127421A CN105587289A CN 105587289 A CN105587289 A CN 105587289A CN 201610127421 A CN201610127421 A CN 201610127421A CN 105587289 A CN105587289 A CN 105587289A
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- CN
- China
- Prior art keywords
- flushing valve
- sliding sleeve
- hole
- central tube
- connector
- 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.)
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Links
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 93
- 239000003129 oil well Substances 0.000 claims abstract description 10
- 241001397306 Proales Species 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000005406 washing Methods 0.000 abstract 3
- 238000011001 backwashing Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a well-flushing valve and a tubular column with the same, wherein the well-flushing valve comprises: the ball throwing device comprises a shell, a central pipe, a sliding sleeve, an upper joint, a lower joint, a ball throwing mechanism, a resetting mechanism and a limiting mechanism. The tubular column with the well washing valve comprises: the packer comprises a casing, a first oil pipe sleeved in the casing, a packer arranged in the first annular space, a hanging inner pipe and a second oil pipe connected to the rear end of the hanging inner pipe. The invention adopts the matching of the sliding sleeve and the ball throwing mechanism to open and close the well washing valve, the well washing valve can be repeatedly used in the well for a plurality of times, and the sliding sleeve is easy to slide, simple and convenient to operate and easy to implement. The tubular column with the well flushing valve can be used for injecting water in a layered mode and backwashing an oil well at the same time.
Description
Technical field
The present invention relates to technical field of petroleum extraction, be specifically related to a kind of flushing valve and the tubing string with flushing valve.
Background technology
For a long time, in oil field well seperated layer water injection process, the outer wall of tubing string may be infected with greasy dirt., in well, may exist impurity such as sand grains meanwhile, thus need in time oil well to be carried out to backwash, in backwashIn process, can be in cleaning tube wall greasy dirt, can also be the impurity band producing well in oil well.
At present Chinese patent ZL200820018627.X discloses a kind of inverse well-flushing valve, comprise top connection, cylinder sleeve,Central tube, spring, piston, spacer ring, lower contact and seal etc. Described cylinder sleeve upper end is connected with top connection,Lower end is connected with lower contact. Described central tube upper end is connected with top connection, and lower end and piston upper end joinTouch. Described piston lower end is located in lower contact top. Described spring fitting, on central tube, is positioned at central tubeIn the annular space of cylinder sleeve. Cylinder sleeve bottom is provided with axially extending bore, by the seal phase of piston and upper installation thereofSealing. Piston slides up and down under the effect of fluid power in cylinder sleeve. The inverse well-flushing valve of this patent has anti-flushing wellFunction, but this inverse well-flushing valve down-hole single use after lost efficacy, cannot reuse and carry out backwashWell, can cause the waste of resource like this.
Summary of the invention
The invention provides a kind of flushing valve and the tubing string with flushing valve, this flushing valve can repeat to make in down-holeWith, in seperated layer water injection, reach the object of anti-flushing well.
The above-mentioned purpose of the embodiment of the present invention can adopt following technical proposal to realize:
The invention provides a kind of flushing valve, it comprises:
Housing, it has rear and front end along self axis direction, offers and connect described housing on described housingThe first through hole;
Have the central tube of inner chamber, it is set in described housing, on described central tube, offer with described inThe pod apertures that chamber is connected, forms annular space between described central tube and described housing;
Can be relatively described the sliding sleeve of housing motion, it is arranged in described annular space, and for by described ringShape spatial separation is separate the first chamber and the second chamber, described the first chamber and described pod apertures phaseBe communicated with, described the second chamber is connected with described the first through hole;
Top connection, its can shutoff described in the front end of the first chamber;
Lower contact, its can shutoff described in the rear end of the second chamber, in described lower contact, offer and described secondThe second through hole that chamber is connected;
Pitching mechanism, its can shutoff described in the inner chamber of central tube, described pitching mechanism comprise the first connector andSecond connector that can depart from described the first connector, when described the first connector and described the second connectorWhen disengaging, the inner chamber of described central tube is opened;
Resetting-mechanism, it is arranged on described sliding sleeve, and described resetting-mechanism can drive described sliding sleeve to travel forward;
Position-limit mechanism, it can limit the proal distance of described sliding sleeve, thereby makes described the first through hole and instituteState the second through hole and be conducted, or make described the first through hole and described the second through hole isolated.
In one embodiment, described flushing valve has at least four operating positions, and described flushing valve is positioned atWhen the first operating position, the inner chamber of central tube described in the shutoff of described pitching mechanism, described sliding sleeve moves also backwardConnect with described lower contact; When described flushing valve is positioned at the second operating position, second of described pitching mechanismConnector landing goes out described flushing valve, the first through hole and/or described the second through hole described in described sliding sleeve shutoff; InstituteWhen stating flushing valve and being positioned at the 3rd operating position, the inner chamber of central tube described in the shutoff of described pitching mechanism, described cunningCover moves backward and connects with described lower contact; When described flushing valve is positioned at the 4th operating position, described throwingThe second connector landing of ball mechanism goes out described flushing valve, and described resetting-mechanism resets, and described sliding sleeve is transported forwardMoving, described the first through hole and described the second through hole conducting.
In one embodiment, described position-limit mechanism comprises the slide block being arranged on described central tube, andBe arranged at the chute being circumferentially arranged along it on described sliding sleeve, described slide block can slide in described chute, described inChute has the first guide part of extending vertically during along himself center deployment, leads along second of oblique extensionTo portion, vertically extend the 3rd guide part, along the 4th guide part of oblique extension and vertically extendThe 5th guide part is provided with the first guidance part, in institute between described the first guide part and described the second guide partState between the 3rd guide part and described the 4th guide part and be provided with the second guidance part, the length of described the first guide partBe less than the length of described the 5th guide part.
In one embodiment, described resetting-mechanism is elastic component, described sliding sleeve be provided with can with described bulletThe Access Division of property part clamping, described elastic component coordinates and can make described slide block remain on described cunning with described Access DivisionIn groove.
In one embodiment, described the first connector comprises the tube connector being set in described central tube,The rear end of described tube connector and described central tube connect.
In one embodiment, described the second connector comprises:
Pull bar,
First pawl that can connect with described tube connector, described the first pawl is fixed on described pull bar by cutting offFront end;
Be fixed on the plug of described back end of tie rod, described plug can seal institute's central tube;
Described pitching mechanism has at least two operating positions, when described pitching mechanism is positioned at the first operating position,Described the first pawl and described tube connector connect, and described plug seals described central tube; Described pitching mechanism positionIn the time of the second operating position, described in cut off fracture, described the first pawl and described tube connector depart from, described pull barGo out described flushing valve with the landing of described pitching mechanism.
In one embodiment, described pitching mechanism also has the second pawl, and described the second pawl connects by onePin is connected with described plug.
In one embodiment, the front end of described sliding sleeve is provided with first piston, and the rear end of described sliding sleeve is provided withThe second piston, described sliding sleeve can drive described first piston and described the second piston to slide.
In one embodiment, described sliding sleeve also has the first adapter sleeve and the second adapter sleeve, described chuteBe located on described the first adapter sleeve, described the second adapter sleeve connects described the first adapter sleeve and described the second piston.
In one embodiment, between described housing and described lower contact, be connected by a pressure cap, described inThe rear end of housing and described lower contact described in the shutoff of pressure cap energy.
In addition, the present invention also provides a kind of tubing string with flushing valve, and it also comprises:
Sleeve pipe,
Be set in the first oil pipe in described sleeve pipe, between described the first oil pipe and described sleeve pipe, form first ringSky, described the first annular space is connected with the first through hole of described flushing valve;
Packer, it is arranged in described the first annular space;
Hang inner tube, it is connected to the central tube rear end of described flushing valve, and forms runner with described lower contact,Described runner is connected with described the second through hole;
Be connected to the second oil pipe of described suspension inner tube rear end, described the second oil pipe is set in described the first oil pipeIn and form the second annular space with described the first oil pipe, described the second annular space is connected with described runner, described theThe rear end of two oil pipes is also connected with screen casing, tail pipe and seal in turn, the relatively described packing of described screen casingDevice is away from the uphole end of oil well.
In sum, the present invention adopts sliding sleeve to coordinate to open and close flushing valve with pitching mechanism, this well-flushingValve can be reused repeatedly in down-hole, and sliding sleeve slides easily, easy and simple to handle, easily implements. Meanwhile, the present inventionUtilize this flushing valve both can seperated layer water injection with the tubing string of flushing valve, can carry out again backwash oil well simultaneously.
Brief description of the drawings
Accompanying drawing described here is only for task of explanation, and it is open to be not intended to limit by any way the present inventionScope. In addition, shape and the proportional sizes etc. of the each parts in figure is only schematically, right for helpingUnderstanding of the present invention is not shape and the proportional sizes that specifically limits the each parts of the present invention. The skill of this areaArt personnel, under instruction of the present invention, can select various possible shapes and proportional sizes as the case may beImplement the present invention.
Fig. 1 shows the structural representation of flushing valve of the present invention;
Fig. 2 shows the plane outspread drawing of sliding sleeve upper hopper chute of the present invention;
Fig. 3 shows the structural representation of the present invention with the tubing string of flushing valve.
The Reference numeral of above accompanying drawing: 1, housing; 11, the first through hole; 2, central tube; 21, inner chamber;22, pod apertures; 3, sliding sleeve; 31, the first chamber; 32, the second chamber; 33, first piston; 34,Two pistons; 35, by cap; 36, the first adapter sleeve; 37, the second adapter sleeve; 4, top connection; 5, under, connectHead; 51, the second through hole; 6, pitching mechanism; 61, pull bar; 62, the first pawl; 63, cut off; 64, stifledHead; 65, the second pawl; 66, connecting pin; 7, resetting-mechanism; 8, position-limit mechanism; 81, slide block; 82,Chute; 821, the first guide part; 822, the second guide part; 823, the 3rd guide part; 824, the 4th leadTo portion; 825, the 5th guide part; 826, the first guidance part; 827, the second guidance part; 9, tube connector;10, pressure cap; 20, with the tubing string of flushing valve; 201, sleeve pipe; 202, the first oil pipe; 203, first ringEmpty; 204, packer; 205, hang inner tube; 206, runner; 207, the second oil pipe; 208, the second ringEmpty; 209, screen casing; 210, tail pipe; 211, seal.
Detailed description of the invention
With the description of the specific embodiment of the invention, can more be well understood to of the present invention thin by reference to the accompanying drawingsJoint. But, the specific embodiment of the present invention described here, only for explaining object of the present invention, andCan not be understood as is by any way limitation of the present invention. Under instruction of the present invention, technical staff canConception is based on possible distortion arbitrarily of the present invention, and these all should be regarded as belonging to scope of the present invention. In additionIt should be noted that one end that " front end " of definition depends on nearly well mouth of oil well in the present invention, " rear end "Refer to the one end away from well mouth of oil well. When an element is considered to " connection " another element, it can beBe directly connected to another element or may have centering elements simultaneously.
As shown in Figure 1, the invention provides a kind of flushing valve, it comprises: housing 1, central tube 2, sliding sleeve 3,Top connection 4, lower contact 5, pitching mechanism 6, resetting-mechanism 7 and position-limit mechanism 8. Housing 1 edge certainlyBody axis direction has rear and front end, offers the first through hole 11 that connects described housing 1 on described housing 1.Central tube 2 has inner chamber 21, and is set in described housing 1, on described central tube 2, offers with describedThe pod apertures 22 that inner chamber 21 is connected, forms annular space between described central tube 2 and described housing 1.Sliding sleeve 3 can move by relatively described housing 1, and is arranged in described annular space, and for by described annularSpatial separation is separate the first chamber 31 and the second chamber 32, described the first chamber 31 with described in leadDischarge orifice 22 is connected, and described the second chamber 32 is connected with described the first through hole 11. Top connection 4 can shutoffThe front end of described the first chamber 31. Lower contact 5 can shutoff described in the rear end of the second chamber 32, connect under describedOn 5, offer the second through hole 51 being connected with described the second chamber 32. Pitching mechanism 6 can shutoff instituteState the inner chamber 21 of central tube 2, described pitching mechanism 6 comprise the first connector and can with described the first connectorThe second connector departing from, in the time of described the first connector and described the second connector disengaging, described central tube2 inner chamber 21 is opened. Resetting-mechanism 7 is arranged on described sliding sleeve 3, and described resetting-mechanism 7 can drive instituteStating sliding sleeve 3 travels forward. Position-limit mechanism 8 can limit the proal distance of described sliding sleeve 3, thereby makes instituteState the first through hole 11 and be conducted with described the second through hole 51, or make described the first through hole 11 logical with described secondHole 51 is isolated.
In the present embodiment, housing 1 is roughly cylindrical, and the first through hole 11 on housing 1 is opened in shellThe rear end of body 1, this first through hole 11 connects the sidewall of housing 1. The front end of housing 1 and top connection 4 screw threadsConnect, the rear end of housing 1 is connected with the parts pressure cap 10 of lower contact 5 or lower contact 5. In lower contact 5, openBe provided with the second through hole 51 that connects described lower contact 5 sidewalls.
Central tube 2 is set in the inside of housing 1, offers pod apertures 22 on central tube 2. This pod apertures 22In inner chamber 21 shutoff of central tube 2, liquid stream can flow to 31 li of the first chambers by this pod apertures 22Act on sliding sleeve 3, the stressed motion backward of sliding sleeve 3, until the rear end of sliding sleeve 3 and lower contact 5 or lower contact 5Parts pressure cap 10 connect. The first chamber 31 can be understood as housing 1, central tube 2 and top connection4 annular spaces that surround.
Sliding sleeve 3 is arranged in the annular space that housing 1 and central tube 2 form, when sliding sleeve 3 blocks firstWhen through hole 11 and/or described the second through hole 51, described flushing valve is closed. When the first through hole 11 and described theWhen two through hole 51 conductings, flushing valve is opened. Leading on the first chamber 31 of sliding sleeve 3 front ends and central tube 2Discharge orifice 22 is connected, and the second chamber 32 of sliding sleeve 3 rear ends is respectively at the first through hole 11 and the second through hole 51Be connected.
Resetting-mechanism 7 is arranged on described sliding sleeve 3, and described resetting-mechanism 7 can drive described sliding sleeve 3 forwardMotion.
Pitching mechanism 6 can shutoff central tube 2 inner chamber 21, make liquid stream flow to first by pod apertures 22Chamber 31 acts on the front end of sliding sleeve 3, promote sliding sleeve 3 move backward, until the rear end of sliding sleeve 3 and under connect5 or the parts pressure cap 10 of lower contact 5 while connecting, sliding sleeve 3 moves no longer backward, and the pressure of liquid stream is doneFor pitching mechanism 6, the first connector of pitching mechanism 6 and the second connector depart from, in central tube 2Open in chamber 21, and active force on sliding sleeve 3 disappears, and resetting-mechanism 7 resets, and sliding sleeve 3 is at resetting-mechanism 7Under effect, travel forward.
Position-limit mechanism 8 can limit the proal distance of sliding sleeve 3, makes described the first through hole 11 and described theTwo through holes 51 are conducted, or make described the first through hole 11 isolated with described the second through hole 51.
The present invention adopts the sliding sleeve 3 being set between housing 1 and central tube 2 to accept from described pod apertures 22 and executesThe pressure adding and along the axis direction of described housing 1 move shutoff or open flushing valve the first through hole 11 and/Or described the second through hole 51, and then open or close flushing valve. This flushing valve can be reused repeatedly in down-hole,Sliding sleeve 3 motions easily, easy and simple to handle, easily implements.
Particularly, described flushing valve has at least four operating positions, and described flushing valve is positioned at the first working positionWhile putting, the inner chamber 21 of central tube 2 described in 6 shutoff of described pitching mechanism, described sliding sleeve 3 move backward and withThe parts pressure cap 10 of described lower contact 5 or lower contact 5 connects; Described flushing valve is positioned at the second operating positionTime, the second connector landing of described pitching mechanism 6 goes out described flushing valve, described in described sliding sleeve 3 shutoffOne through hole 11 and/or described the second through hole 51; When described flushing valve is positioned at the 3rd operating position, described pitchingThe inner chamber 21 of central tube 2 described in mechanism's 6 shutoff, described sliding sleeve 3 move backward and with described lower contact 5 orThe parts pressure cap 10 of lower contact 5 connects; When described flushing valve is positioned at the 4th operating position, described pitching machineThe second connector landing of structure 6 goes out described flushing valve, and described resetting-mechanism 7 resets, and described sliding sleeve 3 forwardMotion, described the first through hole 11 and described the second through hole 51 conductings.
In one embodiment, refer to accompanying drawing 1 and accompanying drawing 2, described position-limit mechanism 8 comprises and being arranged atSlide block 81 on described central tube 2, and be arranged at the chute 82 being circumferentially arranged along it on described sliding sleeve 3,Described slide block 81 can slide in described chute 82, and described chute 82 has edge during along himself center deploymentAxially extended the first guide part 821, along the second guide part 822 of oblique extension, vertically extend the 3rdGuide part 823, along the 4th guide part 824 of oblique extension and vertically extend the 5th guide part 825,Between described the first guide part 821 and described the second guide part 822, be provided with the first guidance part 826, in instituteState between the 3rd guide part 823 and described the 4th guide part 824 and be provided with the second guidance part 827, described firstThe length of guide part 821 is less than the length 825 of described the 5th guide part.
The slide block 81 of specifically setting forth on central tube 2 in conjunction with the sliding type of sliding sleeve 3 in the present embodiment, existsThe form of sliding in chute 82. When flushing valve carries out seperated layer water injection, slide block 81 is in of chute 82The a1 position of one guide part 821, now, the rear end shutoff of sliding sleeve 3 the first through hole 11 and/or second logicalHole 51, flushing valve is closed.
In the time that needs well-flushing is opened flushing valve, first throw to dropping in the inner chamber 21 of the central tube 2 of flushing valveBall mechanism 6, pitching mechanism 6 blocks central tube 2. Then to the interior injection liquid stream of central tube 2. Due to centerPipe 2 is by shutoff, and liquid stream flows to the first chamber 31 by the pod apertures 22 of central tube 2, along with the pressure of liquid streamPower increases gradually, can promote sliding sleeve 3 and move backward until the rear end of sliding sleeve 3 and lower contact 5 or lower contact 5Parts pressure cap 10 connect, sliding sleeve 3 can not move backward again, now slide block 81 by a1 by a2 toA3 position switches tracks. The pressure of liquid stream continues to raise, the pressure of liquid stream compress gradually pitching mechanism 6 beforeEnd, the first connector and second connector of pitching mechanism 6 are separated, the second connector of pitching mechanism 6Landing goes out flushing valve, central tube 2 conductings, and the active force that acts on sliding sleeve 3 front ends disappears, and sliding sleeve 3 is forwardSlide, now slide block 81 arrives a5 position by a3 through a4, and sliding sleeve 3 is removed the first through hole 11 and theThe shutoff of two through holes 51, the first through hole 11 and the second through hole 51 conductings, flushing valve is opened, and can washWell work.
Need water filling after well-flushing finishes time, in the central tube of flushing valve 2, again be lowered to pitching machineStructure 6 shutoff central tubes 2, to filling liquid in the inner chamber 21 of central tube 2, hydraulic pressure can pass through central tube again2 pod apertures 22 enters the first chamber 31 and compresses sliding sleeve 3 and slide backward, slide block 81 in chute 82 byA5 reaches a7 position and switches tracks through a6, and now the rear end of sliding sleeve 3 is again with lower contact 5 or lower contact 5Parts pressure cap 10 connects, and sliding sleeve 3 can not slide backward again. Liquid fails to be convened for lack of a quorum the first connector and second is connectedFitting departs from again, and the second connector landing of pitching mechanism 6 goes out flushing valve, the pressure solution of sliding sleeve 3 front endsRemove, slide block 81 arrives a9 position by a7 through a8 in chute 82, and sliding sleeve 3 can shutoff the first through hole 11And/or second through hole 51, flushing valve is closed again, can carry out seperated layer water injection. When needs are again when well-flushingWait, can repeat aforesaid operations, repeat no more herein.
In one embodiment, described resetting-mechanism 7 is elastic component, described sliding sleeve 3 be provided with can with instituteState the Access Division (not shown) of elastic component clamping, described in described elastic component coordinates with described Access Division and can makeSlide block 81 remains in described chute 82. Wherein, this elastic component can be spring.
In addition, described the first connector comprises the tube connector 9 being set in described central tube 2, described connectionRear end and the described central tube 2 of pipe 9 connect. This tube connector 9 plays and connects central tube 2 and pitching mechanismThe effect of the second connector of 6. Because rear end and the described central tube 2 of this tube connector 9 connect, like thisCan ensure that this tube connector 9 is suspended on the tube wall of central tube 2, can not fall into oil well bottom.
In one embodiment, described the second connector comprises: pull bar 61, the first pawl 62 and plug64. The first pawl 62 can connect with described tube connector 9, and described the first pawl 62 is fixed on institute by cutting off 63State the front end of pull bar 61. Plug 64 is fixed on described pull bar 61 rear ends, described plug 64Neng Duisuo centerPipe 2 seals. Described pitching mechanism 6 has at least two operating positions, and described pitching mechanism 6 is positioned atWhen the first operating position, described the first pawl 62 connects with described tube connector 9, and described plug 64 seals instituteState central tube 2; When described pitching mechanism 6 is positioned at the second operating position, described in cut off 63 fractures, describedOne pawl 62 departs from described tube connector 9, and described pull bar 61 is with the second connector of described pitching mechanism 6Landing goes out described flushing valve.
In the present embodiment, pitching mechanism 6 drops into flushing valve, and the first pawl 62 of pitching mechanism 6 is understood and connectsTake over 9 and connect, and then pitching mechanism 6 is suspended on tube connector 9, the plug 64 of pitching mechanism 6Can block the inner chamber 21 of central tube 2. In the time that injection liquid in the central tube 2 to flushing valve flows, the pressure of liquid streamFirst make sliding sleeve 2 move to backward the rear end of sliding sleeve 2 and the parts pressure cap 10 of lower contact 5 or lower contact 5Connect, sliding sleeve 2 can not move backward again. The pressure of liquid stream compresses the front end of pitching mechanism 6 gradually, throwsBall mechanism 6 cuts off 63 fractures, and the pull bar 61 of pitching mechanism 6 slides backward under the effect of hydraulic pressure, separatesSpacing except to the first pawl 62, the first pawl 62 resets and regains, no longer with tube connector 9 butts, pitching mechanismThe second connector landing of 6 goes out flushing valve
Further, described pitching mechanism 6 also has the second pawl 65, and described the second pawl 65 connects by onePin 66 is connected with described plug 64. The second pawl 65 drops into the central tube 2 of flushing valve in pitching mechanism 6When inner chamber 21, play the effect of buffering, prevent the excessive scratch central tube 2 of throwing power of pitching mechanism 6 and connectTake over 9.
In one embodiment, the front end of described sliding sleeve 3 is provided with first piston 33, after described sliding sleeve 3End is provided with the second piston 34, and described sliding sleeve 3 can drive described first piston 33 and described the second piston 34 to slideMoving. Wherein the rear end of the second piston 34 can also arrange one by cap 35. Described sliding sleeve 3 also has first and connectsFemale connector 36 and the second adapter sleeve 37, described chute 82 is located on described the first adapter sleeve 36, and described secondAdapter sleeve 37 connects described the first adapter sleeve 36 and described the second piston 34.
In another embodiment, between described housing 1 and described lower contact 5, be connected by a pressure cap 10Connect, described pressure cap 10 can shutoff described in the rear end of housing 1 and described lower contact 5. That is to say pressure cap 10Can be integrated into lower contact 5, or be the rear end of separate part shutoff lower contact 5 and housing 1,Can make rear end and the pressure cap 10 of sliding sleeve 3 connect.
In addition, refer to accompanying drawing 3, the present invention also provides a kind of tubing string 20 with above-mentioned flushing valve, itAlso comprise: sleeve pipe 201, the first oil pipe 202, packer 204, suspension inner tube 205 and the second oil pipe207. The first oil pipe 202 is set in described sleeve pipe 201, described the first oil pipe 202 and described sleeve pipe 201Between form the first annular space 203, described the first annular space 203 is connected with the first through hole 11 of described flushing valve.Packer 204 is arranged in described the first annular space 203. Hang inner tube 205 be connected to described flushing valve inCore barrel 2 rear ends, and form runner 206 with described lower contact 5, described runner 206 and described the second through hole51 are connected. The second oil pipe 207 is connected to described suspension inner tube 205 rear ends, and described the second oil pipe 207 overlapsBe located in described the first oil pipe 202 and form the second annular space 208, described second with described the first oil pipe 202Annular space 208 is connected with described runner 206, and the rear end of described the second oil pipe 207 is also connected with screen casing in turn209, tail pipe 210 and seal 211, the relatively described packer 204 of described screen casing 209 is away from oil wellUphole end.
This tubing string is in carrying out seperated layer water injection, and flushing valve is closed, respectively to the first annular space 203 and secondThe interior water filling of oil pipe 207, the water in the first annular space 203 can directly inject the first oil reservoir by sleeve pipe 201, theWater in two oil pipes 207 can first inject the second annular space through the screen casing 209 being connected on the second oil pipe 207208, then inject the second oil reservoir by sleeve pipe 201. In the time of needs well-flushing, flushing valve is opened, toThe interior injection flushing fluid of one annular space 203, the first through hole 11 that flushing fluid can be by flushing valve, the second through hole 51,The runner 206 hanging between inner tube 205 and lower contact 5 injects the second annular space 208, via screen casing 209, theAfter two oil pipes 207, counter go out well head, reach and clean the object of oil well.
Each embodiment in this description all adopts the mode of going forward one by one to describe, and each embodiment stressesBe all and the difference of other embodiment, between each embodiment, identical similar part is mutually referring toCan.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow is familiar with this skillThe personage of art can understand content of the present invention and implement according to this, can not limit protection model of the present invention with thisEnclose. All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection of the present inventionWithin scope.
Claims (11)
1. a flushing valve, is characterized in that, it comprises:
Housing, it has rear and front end along self axis direction, offers and connect described housing on described housingThe first through hole;
Have the central tube of inner chamber, it is set in described housing, on described central tube, offer with described inThe pod apertures that chamber is connected, forms annular space between described central tube and described housing;
Can be relatively described the sliding sleeve of housing motion, it is arranged in described annular space, and for by described ringShape spatial separation is separate the first chamber and the second chamber, described the first chamber and described pod apertures phaseBe communicated with, described the second chamber is connected with described the first through hole;
Top connection, its can shutoff described in the front end of the first chamber;
Lower contact, its can shutoff described in the rear end of the second chamber, in described lower contact, offer and described secondThe second through hole that chamber is connected;
Pitching mechanism, its can shutoff described in the inner chamber of central tube, described pitching mechanism comprise the first connector andSecond connector that can depart from described the first connector, when described the first connector and described the second connectorWhen disengaging, the inner chamber of described central tube is opened;
Resetting-mechanism, it is arranged on described sliding sleeve, and described resetting-mechanism can drive described sliding sleeve to travel forward;
Position-limit mechanism, it can limit the proal distance of described sliding sleeve, thereby makes described the first through hole and instituteState the second through hole and be conducted, or make described the first through hole and described the second through hole isolated.
2. flushing valve according to claim 1, is characterized in that, described flushing valve has at least fourOperating position, when described flushing valve is positioned at the first operating position, central tube described in the shutoff of described pitching mechanismInner chamber, described sliding sleeve moves backward and connects with described lower contact; Described flushing valve is positioned at the second working positionWhile putting, the second connector landing of described pitching mechanism goes out described flushing valve, described in described sliding sleeve shutoff firstThrough hole and/or described the second through hole; When described flushing valve is positioned at the 3rd operating position, the shutoff of described pitching mechanismThe inner chamber of described central tube, described sliding sleeve moves backward and connects with described lower contact; Described well-flushing valve positionIn the time of the 4th operating position, the second connector landing of described pitching mechanism goes out described flushing valve, described resetMechanism resets, and described sliding sleeve travels forward, described the first through hole and described the second through hole conducting.
3. flushing valve according to claim 1, is characterized in that, described position-limit mechanism comprises and being arranged atSlide block on described central tube, and be arranged at the chute being circumferentially arranged along it on described sliding sleeve, described slide blockCan in described chute, slide, described chute has first leading of extending vertically during along himself center deploymentThe 3rd guide part that extends to portion, along the second guide part of oblique extension, vertically, along the of oblique extensionFour guide parts and the 5th guide part extending vertically, at described the first guide part and described the second guide partBetween be provided with the first guidance part, between described the 3rd guide part and described the 4th guide part, be provided with the second guidingPortion, the length of described the first guide part is less than the length of described the 5th guide part.
4. flushing valve according to claim 1, is characterized in that, described resetting-mechanism is elastic component,Described sliding sleeve be provided with can with the Access Division of described elastic component clamping, described elastic component coordinates with described Access DivisionCan make described slide block remain in described chute.
5. flushing valve according to claim 1, is characterized in that, described the first connector comprises sheathedTube connector in described central tube, the rear end of described tube connector and described central tube connect.
6. flushing valve according to claim 5, is characterized in that, described the second connector comprises:
Pull bar,
First pawl that can connect with described tube connector, described the first pawl is fixed on described pull bar by cutting offFront end;
Be fixed on the plug of described back end of tie rod, described plug can seal institute's central tube;
Described pitching mechanism has at least two operating positions, when described pitching mechanism is positioned at the first operating position,Described the first pawl and described tube connector connect, and described plug seals described central tube; Described pitching mechanism positionIn the time of the second operating position, described in cut off fracture, described the first pawl and described tube connector depart from, described pull barGo out described flushing valve with the landing of described pitching mechanism.
7. flushing valve according to claim 6, is characterized in that, described pitching mechanism also has secondPawl, described the second pawl is connected with described plug by a connecting pin.
8. flushing valve according to claim 3, is characterized in that, the front end of described sliding sleeve is provided with firstPiston, the rear end of described sliding sleeve is provided with the second piston, and described sliding sleeve can drive described first piston and describedTwo pistons slide.
9. flushing valve according to claim 8, is characterized in that, described sliding sleeve also has the first connectionCover and the second adapter sleeve, described chute is located on described the first adapter sleeve, described in described the second adapter sleeve connectsThe first adapter sleeve and described the second piston.
10. flushing valve according to claim 1, is characterized in that, described housing and described lower contactBetween be connected by a pressure cap, the rear end of housing and described lower contact described in the shutoff of described pressure cap energy.
11. 1 kinds of bands, just like the tubing string of the flushing valve described in any one in claim 1-10, is characterized in that,It also comprises:
Sleeve pipe,
Be set in the first oil pipe in described sleeve pipe, between described the first oil pipe and described sleeve pipe, form first ringSky, described the first annular space is connected with the first through hole of described flushing valve;
Packer, it is arranged in described the first annular space;
Hang inner tube, it is connected to the central tube rear end of described flushing valve, and forms runner with described lower contact,Described runner is connected with described the second through hole;
Be connected to the second oil pipe of described suspension inner tube rear end, described the second oil pipe is set in described the first oil pipeIn and form the second annular space with described the first oil pipe, described the second annular space is connected with described runner, described theThe rear end of two oil pipes is also connected with screen casing, tail pipe and seal in turn, the relatively described packing of described screen casingDevice is away from the uphole end of oil well.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610127421.XA CN105587289B (en) | 2016-03-07 | 2016-03-07 | Well flushing valve and tubular column with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610127421.XA CN105587289B (en) | 2016-03-07 | 2016-03-07 | Well flushing valve and tubular column with same |
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| CN105587289A true CN105587289A (en) | 2016-05-18 |
| CN105587289B CN105587289B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610127421.XA Active CN105587289B (en) | 2016-03-07 | 2016-03-07 | Well flushing valve and tubular column with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869320A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | Anti- return of one kind tells flushing valve |
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| CN201857913U (en) * | 2010-09-15 | 2011-06-08 | 中国石油化工股份有限公司 | Well washing valve for completion of horizontal well |
| CN202360051U (en) * | 2011-11-04 | 2012-08-01 | 刘子君 | Safe bidirectional well washing valve |
| CN203756123U (en) * | 2014-02-18 | 2014-08-06 | 中国石油化工股份有限公司 | Sand-prevention inclined well washing valve |
| US9422792B2 (en) * | 2012-05-17 | 2016-08-23 | Halliburton Energy Services, Inc. | Washpipe isolation valve and associated systems and methods |
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| CN2213229Y (en) * | 1994-12-06 | 1995-11-22 | 北京市路达能源技术开发公司 | Sand-proof flushing valve |
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| CN201857913U (en) * | 2010-09-15 | 2011-06-08 | 中国石油化工股份有限公司 | Well washing valve for completion of horizontal well |
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| CN107869320A (en) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | Anti- return of one kind tells flushing valve |
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| CN105587289B (en) | 2017-12-05 |
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