CN102966330B - The valve that fluid power pressure break is used is carried out by cement trocar sheath - Google Patents

Abstract

The present invention relates to carry out, by cement trocar sheath, the valve that fluid power pressure break is used.A kind of valve includes: have the housing of opening；The mandrel being arranged in housing, described mandrel has opening；The dish that can rupture being arranged in the passage of mandrel；The sliding sleeve being arranged between housing and mandrel；And the ball seat being arranged in mandrel.A kind of method driving valve includes: allow fluid flow valve；Spheroid is made to fall；Spheroid is placed in ball seat and block fluid is through the flowing of mandrel；Allow fluid flow passage and flow to sliding sleeve；Make sliding sleeve axially-movable in valve；The opening of the opening and mandrel that enable flow through housing flows out.A kind of valve includes: have the housing of opening；The mandrel being arranged in housing, described mandrel has opening and passage；The sliding sleeve being arranged between housing and mandrel；And the ball seat being arranged in mandrel, described ball seat blocks the fluid communication between mandrel and passage.

Description

The valve that fluid power pressure break is used is carried out by cement trocar sheath

Cross-Reference to Related Applications

The application is JIUYUE in 2011 submission, U.S. of Serial No. No.13/223,909 on the 1st The part continuation application of state's patent application, the complete disclosure of this U. S. application is with the side quoted Formula is hereby incorporated by.

Technical field

Embodiments disclosed herein relates to carrying out down-hole formation used in fluid power pressure break Apparatus and method.More specifically, embodiments disclosed herein relates in fluid power fracturing operation The downhole valve used.

Background technology

This introduction herein relevant with background technology and/or obtain from background technology Information, this background technology can provide for theme described here and/or the theme hereafter claimed In background or provide the background relevant to this theme.This part provide background information in order to In understanding the most to various aspects of the present invention.This is the discussion to " being correlated with " technology. Such technology is correlation technique and implies that this technology is also " existing " technology by no means.This phase Pass technology can be that prior art may not be prior art.Discussion in part herein Should read with this angle, and should be as admission of prior art.

Owing to, after cement grouting process completes, the opening of valve can be by cement or the shadow of other chip Ringing, the existing design of the valve used in completion method the most disclosed above was easily lost efficacy.Logical The sliding sleeve often used or a part for piston are exposed in above-mentioned cement stream or expose extremely exist The cement of flowing between pit shaft and sleeve pipe tubing string.

Summary of the invention

Valve according to the present invention is by being isolated in sliding sleeve between external shell and internal mandrel And overcome difficulties described above.Rupturable dish in internal mandrel occurs under selected pressure Rupture.Pressure will then act against one end of sliding sleeve and makes sliding sleeve move to open position Put so that fracturing fluid directly acts on cement sleeve pipe.Sliding sleeve includes locking annular spiral shell Female to prevent described sleeve from sliding back to a closing position.

In the first aspect, valve includes: have the housing of opening；The mandrel being arranged in housing, Described mandrel has opening；The dish that can rupture being arranged in the passage of described mandrel；Arrange Sliding sleeve between described housing and described mandrel；And the ball seat being arranged in mandrel.

Second aspect includes the method driving valve, and described valve includes: have the housing of opening； There is the mandrel of opening and passage；The sliding sleeve being arranged between housing and mandrel；It is arranged on Ball seat in mandrel.Described method includes: allow fluid flow described valve；Ball is made to fall；By institute State in ball is placed in ball seat and block the motion by mandrel of the described fluid；Described fluid is made to pass through Described passage flows to described sliding sleeve；Make the axially-movable in described valve of described sliding sleeve； Described fluid is made to flow out through the opening of described housing and the opening of described mandrel.

In a third aspect, valve includes: have the housing of opening；The mandrel being arranged in housing, Described mandrel has opening and passage；It is arranged on the slip cap between described housing and described mandrel Cylinder；And the ball seat being arranged in mandrel, described ball seat block described mandrel and described passage it Between fluid communication.

It is presented above the simple general introduction of the present invention to provide basic in terms of some of the present invention Understand.This general introduction is not the summary of the exhaustive to the present invention.This general introduction is not intended as really Determine essential element or the key element of the present invention, be not intended to describe the scope of the present invention.It is only The purpose of one is the preamble as the more detailed description that will be described later and with simply Form provides some concepts.

Accompanying drawing explanation

It is appreciated that the present invention with reference to explained below, accompanying drawing similar in the accompanying drawings in conjunction with accompanying drawing Labelling represents similar element, and:

Fig. 1 is the side view of valve according to an embodiment of the invention；

Fig. 2 is the sectional view of the valve in the closed position that the 2-2 line along Fig. 1 is cut open；

Fig. 3 is the sectional view of the valve that the 3-3 line along Fig. 2 is cut open；

Fig. 4 is the sectional view of sliding sleeve；

Fig. 5 is locked out the sectional view of ring holding portion；

Fig. 6 is locked out the sectional view of ring；

Fig. 7 is locked out the end view of ring；

Fig. 8 is in the sectional view of the valve of open position；

Fig. 9 is the enlarged drawing in the region irised out in Fig. 8；

Figure 10 is the cross section of the valve in the closed position according to embodiment disclosed by the invention Figure；

Figure 11 is the cross section of the valve in an open position according to embodiment disclosed by the invention Figure；

Figure 12 is the flow chart of the driving method of the valve according to embodiment disclosed by the invention；

Figure 13 is the cross section of the valve in the closed position according to embodiment disclosed by the invention Figure；

Figure 14 is the cross section of the valve in an open position according to embodiment disclosed by the invention Figure；

Figure 15 is the flow chart of the driving method of the valve according to embodiment disclosed by the invention.

Although the present invention allows various improvement and replaceable form, but accompanying drawing here it is shown that with The particular implementation that the mode of example is described in detail.It should be understood, however, that herein to specific The description of embodiment is not intended as limiting the invention to disclosed concrete form, on the contrary, It is intended to cover the institute falling in the spirit and scope of the invention defined by the claims There are improvement embodiment, equivalent embodiments and replaceable embodiment.

Detailed description of the invention

Illustrative embodiments of the present invention are described below.For the sake of clarity, this specification does not has It is described whole features of physical device.Certainly it is understood that in any such reality In the research and development of embodiment, it is necessary to make many decisions performed especially to realize developer's Specific objective, such as, follow the restriction that system is relevant or business is relevant, and these restrictions described will depend on The difference of equipment and different.Further, it is to be understood that, such R&D work, even Complicated and time-consuming, for having benefited from those of ordinary skill in the art of the disclosure of invention and Speech also will be conventional work.

As shown in fig. 1, an embodiment of the valve 10 of the present invention includes main casing 13 and two Individual similar end coupling part 11,12.

Main casing 13 is the hollow cylinder in each end with threaded portion 61, each described Threaded portion 61 receives the threaded portion 18 of each end coupling.End coupling 11 and 12 can have There are female thread or external screw thread to be connected to sleeve pipe tubing string.As shown in Figure 2, main casing 13 includes One or more opening 19, described opening 19 is overlapped 40 cinctures by ring protection.Ring protection Set 40 is made up of the material with resistance to high impact.

Valve 10 include mandrel 30, described mandrel 30 be formed as end coupling 11,12 it Between extend hollow cylindrical tube (as shown in Figure 2).Mandrel 30 includes one or more The aperture 23 extended through the outer wall of mandrel.Mandrel 30 also has the middle screw being in its outside Stricture of vagina portion 51.One or more rupturable dish 41,42 is positioned at mandrel (as shown in Figure 3). Rupturable dish 41,42 is located between inner surface and the outer surface of mandrel 30 in the passage extended. The outer surface of mandrel is provided with annular recess 17 and 27 to accommodate suitable sealing member.

By the shoulder 15 of mandrel is bonded in the inner surface of end coupling so that mandrel 30 are limited between end coupling 11 and 12.End coupling 11 and 12 includes longitudinal direction Extension 18, described longitudinal extension part 18 make main casing 13 spaced apart with mandrel 30 and thus Define chamber 36.The annular that longitudinal extension part 18 has for accommodating suitable sealing member is recessed Portion 32.Sliding sleeve parts 20 are positioned at described chamber 36 and are generally hollow cylindricals Structure (as shown in Figure 4).Sliding sleeve parts 20 include having the diameter of threaded portion 66 relatively Little part 24.Sliding sleeve parts 20 are additionally provided with the end for accommodating shear pin 21 Groove 43.Sliding sleeve parts 20 also include the cannelure 16 accommodating suitable lip ring With 22.

As shown in Figure 9, locking ring maintaining part 25 has ratchet 61 and this locking ring maintaining part 25 keep locking rings 50, locking ring 50 its outer surface have ratchet 51 and within it surface tool There is ratchet 55.Locking ring 50 includes that opening 91(is as shown in Figure 7), along with sliding sleeve Move to open position from closed position, described opening 91 can make described locking ring diameter increase.

Locking ring maintaining part 25 has enough diameter nargin, so that locking ring 50 can be nibbled Close to the ratchet 63 of mandrel and locking ring 50 will never be made to connect with the screw thread of locking ring maintaining part 25 Connect and get loose.Locking ring maintaining part 25 there is threaded portion 26 in case with the spiral shell on sliding sleeve parts Stricture of vagina portion 24 is meshed.Locking ring maintaining part 25 also has multiple for arranging screw rod (not shown) Hole 46 and 62.

In use, valve 10 can be connected to sleeve pipe tubing string by end coupling 11,12. One or more valve 10 can be incorporated in sleeve pipe tubing string.It is configured at sleeve pipe tubing string After in well, as mode conventional in prior art, cement is pumped down thus passes through Sleeve pipe in the annular space that sleeve bottom exits between pit shaft and sleeve pipe.At cement stream After dynamic termination, stopper or other device pump down with wiping sleeve pipe and valve thus are removed residual Cement.When described stopper or other device are locked or are sealed in bottom hole assembly, increase To make under a predetermined, rupturable hair updo is raw to be ruptured pressure.Fluid pressure will act at slip On sleeve part 20 with cause shear pin to fracture and then make sliding sleeve parts 20 downstream or Move right (as shown in Figure 8).This motion can be passed through making fracturing fluid in mandrel Opening 19 in aperture 23 and shell flows out.Fracturing fluid under pressure will remove annular guarantor Sheath 40 also makes cement sheath tracheal rupture and also by the stratum near valve described in pressure break 10.

Due to the flow insulated of sliding sleeve parts 20 major part with cement, therefore sliding sleeve portion Part 20 is not readily susceptible to blocking or need not higher driving pressure.

At open position, locking ring 50 engages with the threaded portion 63 in mandrel in case sliding stop set Closed position retracted by cylinder.

Main casing 13 is provided with air vent 37 to allow air to flow out when valve assembles. Air vent 37 is closed by suitable stopper after mounting.

Referring now to Figure 10, it illustrates and be in close stance according to embodiment disclosed by the invention The sectional view of the valve put.Shown valve 100 and upper tool assembly 106 and lower tool assembly 107 Connect.Upper tool assembly 106 and lower tool assembly 107 can include appointing for downhole operations The instrument of what quantity, described instrument e.g. packer, subassembly, volume control device etc.. Valve 100, upper tool assembly 106 and lower tool assembly 107 are threaded connection portion 108 and connect. In this embodiment, valve 100 includes housing 105 and mandrel 110.Housing 105 and mandrel 110 can be formed by metal well known in the prior art (steel of the most various grades).

Housing 105 has one or more opening 111 being positioned at around valve 100.Opening 111 Quantity, positions and dimensions can change according to the needs of the detailed description of the invention of valve 110. Such as, in some embodiments, the length range of opening 111 can be from several inches to several English Chi.It addition, the geometry of opening 111 can change according to the needs of concrete operations.Example As, in some embodiments, opening 11 can be somewhat rectangular in, and implements at other In mode, opening 111 in size and geometry can more inclined round/circular.Except in housing 105 Opening 111 beyond, valve 100 also includes one or more opening 112 corresponding of mandrel. The opening 112 of mandrel 110 is in position corresponding to the opening 111 in housing 105, so, The geometry of the opening 112 of mandrel 110 and size can be along with the openings 111 of housing 105 Geometry and the change of size and change

Sliding sleeve 115 is arranged between housing 105 and mandrel 110.In this embodiment, First chamber 120 is formed between housing 105 and mandrel 110 and is axially in sliding sleeve The top of 115.Similarly, the second chamber 125 is formed between housing 105 and mandrel 110 And it is in the lower section of sliding sleeve 115.When sliding sleeve 115 is in the closed position, first Chamber 120 and the second chamber 125 are under atmospheric pressure.Due to the pressure in the first chamber 120 Pressure in power and the second chamber 125 is balance, i.e. two chambers all under atmospheric pressure, Therefore there is not axially-movable in sliding sleeve in the first chamber 120 and the second chamber 125, because of And valve 100 is maintained in its closed position.

Passage 130 is axially positioned in the top of sliding sleeve 115 and passage 130 by mandrel Inner chamber and first chamber 120 of 110 are in fluid communication.In closed position, it is possible to the dish 135 ruptured May be located in passage 130, thus block fluid enters the first chamber from the through hole 140 of valve 100 Flowing in room 120.As explained above, it is possible to the dish 135 ruptured can be by being set The material being calculated as cracking or fracturing at a particular pressure is formed.

Such as, in one embodiment, it is possible to the dish 135 ruptured can be designed as about 3000PSI(pound/square inch) under rupture.In other embodiments, it is possible to rupture Dish 135 can be designed as lower or higher pressure (such as 1000PSI, 5000PSI, 10000PSI or 15000PSI) under rupture.The dish 135 that can rupture ruptures Pressure can change according to the concrete design of valve 100 and the needs of operation, has benefited from the present invention Those skilled in the art of disclosure will can readily determine that the mode of above-mentioned change.Such as, The rated pressure of the dish 135 that can rupture can be according to the degree of depth of well, be just pumped into down-hole The character of fluid, the size etc. of valve 100 and change.

In some embodiments, multiple dishes 135 that can rupture are around the internal diameter of mandrel 110 Arrange.For example, it is possible to arrange two dishes that can rupture 135 each other approximately becoming 180 °.This Field those of ordinary skill is it will be appreciated that during to horizontal well setting of casing, due to described instrument Side relatively low, cement may trend towards being deposited on the relatively downside of described instrument.In order to The cement preventing deposition postpones or hinders the actuating of valve 100, can include multiple energy in valve 100 The dish 135 enough ruptured.Even if one of them dish 135 that can rupture of the relatively downside at valve 100 Covered by cement and can not rupture, but it is superfluous to arrange second in the upper side of described instrument The remaining dish 135 that can rupture.Owing to cement will not cover described in the upper side of valve 100 The dish 135 that can rupture, the most once valve is driven, and is positioned at the dish that can rupture of upper side 135 just will rupture, so that valve 100 is opened.To have benefited from the disclosure of invention The mode that can readily determine that of those skilled in the art, can include many in some valve 100 In the dish 135 that can rupture of two.For example, it is possible to include three, four, five or more Multiple dishes 135 that can rupture are to provide extra redundancy.

Valve 100 also includes the ball seat 145 being arranged in through hole 140.In this embodiment, Ball seat 145 be connected with the internal diameter of mandrel 110 and be axially positioned in housing opening 111 and The lower section of the opening 112 of mandrel.Valve seat 145 is configured to accommodate spheroid (not shown), Described spheroid can fall from earth's surface to drive described valve 100.Those of ordinary skill in the art Can be easily it is well established that the size passing the opening 150 of ball seat 145 can change to hold Receive the spheroid of certain diameter.Such as, in the operation employing multiple valve 100, sphere diameter Or size can be changed with the increment of 1/16 inch.In order to make multiple valve 100 can be along well Length is driven, relative to earth's surface far from being provided with corresponding to minimum in well The valve seat 145 of diameter sphere, and can be provided with corresponding to maximum on the position on earth's surface The valve seat 145 of diameter sphere.Therefore, it can sequentially make bigger spheroid fall, so that Multiple valves 100 are opened.

With reference to Figure 11, it illustrates according to embodiment disclosed by the invention is in an open position The sectional view of valve.As described above, the assembly of valve 100 is corresponding to shown in Figure 10 Assembly.At open position, sliding sleeve 115 is axial in the bottom of housing 105 and mandrel 110 Location, ground, thus allow the fluid between the annular space (not shown) of through hole 140 and sleeve pipe Connection.

In order to be driven by valve 100 to open position, spheroid 150 falls from the earth's surface of well.Spheroid 150 be pumped down along pit shaft until described spheroid contact and be placed on ball seat 145 (as Shown in figure).Owing to fluid continues to build up in through hole 140, therefore pressure is increased up always Pressure has reached the selected pressure that the described dish 135 that can rupture can be caused to rupture.Due to described The dish 135 that can rupture ruptures, and fluid is in passage 130 flows into the first chamber 120. Fluid pressure in pipe forces sliding sleeve 115 to be moved downwardly into the second chamber in the axial direction In 125.Then sliding sleeve 115 can be by corresponding on locking ring 155 and mandrel 105 The engagement of tooth 160 and lock in place.Then locking ring 155 may insure that sliding sleeve 115 is long It is in an open position for a long time, so that all fluid flows through opening 111 and the mandrel of housing Opening 112.

With reference to Figure 12, it illustrates the driving method of valve according to embodiment disclosed by the invention Flow chart.There is provided this flow chart for further illustrating and the driving of valve the most discussed herein above Dynamic.During completion, before exploitation, carry out adding of well by cement being pumped into Jing Zhonglai Set operation.Cement is pumped into down-hole by the through hole of valve.Cement is from sleeve pipe tubing string (not shown) Flow out in the annular region of the well formed between sleeve pipe tubing string and stratum.In cementing Operation complete after, make wiping arrangement (not shown) such as wiping stopper in a conventional manner Move across sleeve pipe tubing string.The flowing of fluid promotes wiping stopper to move downward, described wiper plug Son is designed to the internal diameter from sleeve pipe tubing string and removes (including the internal diameter along valve) cement of residual, As discussed above.

Sleeve pipe tubing string can include many instruments, such as isolating the packer of well section.Due to Well includes that multiple mining area is common, and therefore specific mining area can be by under mining area Side and/or be provided above one or more packer and be isolated.One or more valves can To arrange along the sleeve pipe tubing string between each packer, so that fluid (such as fracturing fluid) Down-hole can be pumped into fracturing stratum.

In order to valve is driven and makes fracturing fluid fracturing stratum, first allow fluid flow valve (step 200).In this embodiment, valve has and is provided with the housing of opening, is provided with opening And the mandrel of passage, the sliding sleeve being arranged between housing and mandrel and be arranged in mandrel Ball seat.In order to valve is driven, spheroid is made to fall (step 205) downwards from earth's surface Pumping.Described spheroid is once positioned at valve, and this spheroid is then seated in (step 210) in ball seat, Thus blocked the fluid flowing by mandrel.Owing to the flowing of fluid is blocked, it is being placed Spheroid above and below define pressure differential.Above the spheroid being placed, pressure increases always Add until pressure has reached the raw selected pressure ruptured of hair updo that can allow to rupture, then fluid Flow through passage through hole and first chamber of valve being connected.

Enable flow across described passage and enter in the first chamber and the (step that contacts with sliding sleeve 215).Make sliding sleeve move axially downwards (step 220) between housing and mandrel thus Enter in the second chamber.Owing to sliding sleeve moves down (step 220), therefore make valve Can be in fluid communication between through hole and the sleeve pipe of well and/or the stratum of well.More specifically, fluid passes through Opening in housing and the opening in mandrel flow out valve (step 225).

In some embodiments, sliding sleeve can be by the ratchet of the locking ring of sliding sleeve Engagement to the corresponding ratchet of mandrel and be locked in open position.In alternate embodiments, Sliding sleeve can not be locked into position.In such embodiment, fluid pressure can make Sliding sleeve is maintained at open position.

With reference to Figure 13, it illustrates according to embodiment disclosed by the invention is in the closed position The sectional view of valve.Shown valve 300 and upper tool assembly 306 and lower tool assembly 307 Connect.As explained above, upper tool assembly 306 and lower tool assembly 307 can wrap Include any amount of instrument for downhole operations, described instrument e.g. packer, subassembly, Volume control device etc..Valve 300, upper tool assembly 306 and lower tool assembly 307 pass through Threaded joints 308 connects.In this embodiment, valve 300 includes housing 305 and mandrel 310。

Housing 305 has around valve 300 one or more that arrange on diverse location and opens Mouth 311.In addition to the opening 311 in housing 305, valve 300 also includes the corresponding of mandrel One or more opening 312.The opening 312 of mandrel 310 is in position corresponding to housing The opening 311 of 305, so, the geometry of the opening 312 of mandrel 310 and size can be with The geometry of opening 311 of housing 305 and the change of size and change.

Sliding sleeve 315 is arranged between housing 305 and mandrel 310.In this embodiment, First chamber 320 is formed between housing 305 and mandrel 310 and is axially in sliding sleeve Above in the of 315.Similarly, the second chamber 325 is formed between housing 305 and mandrel 310 also It is in below sliding sleeve 315.When sliding sleeve 315 is in the closed position, the first chamber 320 and second chamber 325 be under atmospheric pressure.Due to the pressure in the first chamber 320 and Pressure in second chamber 325 is balance, i.e. two chambers all under atmospheric pressure, because of Axially-movable is there is not in this sliding sleeve in the first chamber 320 and the second chamber 325, thus Valve 300 is maintained in its closed position.

Passage 330 is axially in above sliding sleeve 315 and described passage 330 makes the heart Inner chamber and first chamber 320 of axle 310 are in fluid communication.Valve 300 also includes being arranged on through hole 340 In ball seat 345.Opening 312 in opening 311 that ball seat is positioned in housing and mandrel upper Side being in can stop the position of fluid communication between through hole 340 and the first chamber 320.Ball seat 345 are connected to mandrel 310 by one or more shear pin 365.It addition, at passage 330 Above and below ball seat 345 and mandrel 310 between can be provided with one or more Sealing member 370, thus effectively make passage 330 be isolated with through hole 340.Due to passage 330 It is isolated with through hole 340, in the first chamber 320 and the second chamber 325, balance can be kept Pressure.

Referring now to accompanying drawing 14, it illustrates Figure 13's according to embodiment disclosed by the invention Sectional view when valve is in an open position.As described above, the assembly of valve 300 corresponds to Figure 13 In assembly.At open position, sliding sleeve 315 is axially in opening 311 He of housing The lower section of the opening 312 of mandrel, so that fluid between through hole 340 and sleeve pipe (not shown) Connection.

In order to drive valve 300 to open position, spheroid 350 is made to fall from the earth's surface of well.Right Spheroid 350 carry out pumping in down-hole until described spheroid contact and be placed on ball seat 345 (as Shown in figure).Owing to fluid is persistently pumped in through hole 340, therefore pressure increases directly always The selected pressure that shear pin 360 can be caused to fracture has been reached to pressure.Shear pin 360 Fracture and cause ball seat 345 axially to move to final open position in through hole 340.Along with ball The motion of seat 345, fluid flows through passageway 330 enters in the first chamber 320.Fluid in pipe Pressure forces sliding sleeve 315 to be moved downwardly in the axial direction in the second chamber 325.Then Sliding sleeve 315 can be by the engagement of tooth 360 corresponding on locking ring 355 and mandrel 305 And lock in place.Then locking ring 355 may insure that sliding sleeve 315 is in muchly and opens Position, so that all fluid flows through the opening 311 of housing and the opening 312 of mandrel.

In some embodiments, passage 330 can arrange the dish (not shown) that can rupture. In such embodiment, it is possible to the suppression component that the dish ruptured can serve as adding is to prevent Too early driving to valve 300.Therefore, even if ball seat 345 moves prematurely, valve 300 is in pressure Power also will not be opened before increasing to selected pressure.

With reference to Figure 15, it illustrates Figure 13 and Figure 14 according to embodiment disclosed by the invention The flow chart of driving method of valve.Described flow chart is provided above to discuss for the clearest and the most definite The driving of the valve stated.

In order to valve is driven and makes fracturing fluid fracturing stratum, first allow fluid flow valve (step 400).In this embodiment, valve has and is provided with the housing of opening, is provided with opening And the mandrel of passage, the sliding sleeve being arranged between housing and mandrel and be arranged in mandrel Ball seat.In order to be driven valve, spheroid falls (step 405) and to down-hole from earth's surface Pumping.Described spheroid is once positioned at valve, and this spheroid is seated in (step 410) in ball seat, Thus the flowing that block fluid is by mandrel.Owing to the flowing of fluid is blocked, pressure is applied in On ball seat so that for keeping the shear pin of ball seat to fracture, and cause ball seat in the axial direction to Lower motion (step 415).

Enable flow across described passage and enter in the first chamber and the (step that contacts with sliding sleeve 420).Make sliding sleeve move axially downwards (step 425) between housing and mandrel thus Enter in the second chamber.Owing to sliding sleeve moves downward (step 425), therefore valve is logical Can be in fluid communication between hole and the sleeve pipe of well and/or the stratum of well.

Advantageously, use during embodiment disclosed by the invention can be provided in fluid power fracturing operation Full opening of valve, it is thus possible to realize more effective fracturing operation.Advantageously also, this Bright disclosed embodiment can provide the valve with redundant system to prevent driving too early of downhole valve Dynamic.

Although the embodiment of limited quantity is described by the present invention, but has benefited from the present invention Those skilled in the art it will be appreciated that described without departing from here scope of the disclosure In the case of, it is also possible to other embodiment designed.Therefore, the scope of the present invention should be only It is limited only by the following claims.

Claims (20)

1. a valve, including:

There is the housing of opening；

Being arranged on the mandrel in described housing, described mandrel has opening；

The dish that can rupture being arranged in the passage of described mandrel；

It is arranged on the sliding sleeve between described housing and described mandrel；And

It is arranged on the ball seat in described mandrel.

2. valve as claimed in claim 1, wherein when described valve is in the closed position, described Sliding sleeve blocks the fluid communication between opening and the opening in mandrel in housing.

3. valve as claimed in claim 1, wherein said sliding sleeve is configured to can be in institute State and move in the axial direction between housing and described mandrel.

4. valve as claimed in claim 1, described valve also includes the spheroid being arranged in ball seat.

5. valve as claimed in claim 1, the wherein said dish that can rupture is axially positioned in The top of described sliding sleeve.

6. valve as claimed in claim 1, wherein said ball seat be axially positioned in described can The lower section of the dish ruptured.

7. valve as claimed in claim 1, wherein between described mandrel and described housing and The opening of described mandrel and the opening of described housing be axially provided above the first chamber, in institute State between mandrel and described housing and in opening axial of the opening of described mandrel and described housing Lower section is provided with the second chamber.

8. valve as claimed in claim 7, wherein when described valve is in the closed position, described First chamber and described second chamber are under atmospheric pressure.

9., for the method driving valve, described method includes:

Allowing fluid flow valve, described valve includes:

Having the housing of opening, the opening of this housing is through the wall radially location of housing；

Having the mandrel of opening and passage, the opening of this mandrel is through the wall radially location of mandrel；

Being arranged on the sliding sleeve between described housing and described mandrel, described sliding sleeve is used In moving between a closed position and a open position, in described closed position, in described housing Opening and described mandrel in opening between fluid communication be blocked, and open position described In putting, then realize the opening in described housing and the fluid communication between the opening in described mandrel； And

It is arranged on the ball seat in described mandrel；

Spheroid is made to fall；

Make described spheroid be seated in described ball seat and block fluid is through the flowing of mandrel；

In described spheroid is seated in described ball seat and block fluid is through the situation of the flowing of mandrel Under, allow fluid flow described passage and flow to described sliding sleeve；

The fluid pressure that response is applied by the fluid flowing through described passage, makes described sliding sleeve Axially-movable in described valve；And

When making described sliding sleeve carry out axially-movable, pass fluid through the opening of described housing Flow out with the opening of described mandrel.

10. method as claimed in claim 9, wherein said valve also includes: be arranged on described The dish that can rupture in passage.

11. methods as claimed in claim 10, described method farther includes: by making State spheroid to be seated in described ball seat and make the described dish that can rupture rupture.

12. methods as claimed in claim 9, wherein make described spheroid be seated in described ball seat In described ball seat is slid axially in described mandrel.

13. methods as claimed in claim 9, described method also includes making described sliding sleeve Lock onto at least one in described mandrel and described housing.

14. methods as claimed in claim 9, wherein said ball seat is presented axially in described Opening in housing and the lower section of the opening in described mandrel.

15. 1 kinds of valves, including:

Having the housing of opening, the opening of this housing is through the wall radially location of housing；

Being arranged on the mandrel in described housing, described mandrel has opening and passage, this mandrel Opening is through the wall radially location of mandrel；

Being arranged on the sliding sleeve between described housing and described mandrel, described sliding sleeve is used for Move between a closed position and a open position, in described closed position, in described housing The fluid communication between opening in opening and described mandrel is blocked, and at described open position In, then realize the opening in described housing and the fluid communication between the opening in described mandrel； And

Be arranged on the ball seat in described mandrel, described ball seat block described mandrel and described passage it Between fluid communication.

16. valves as claimed in claim 15, described valve farther includes: be arranged on described logical The dish that can rupture in road.

17. valves as claimed in claim 15, wherein said ball seat is configured at the described heart Axially-movable in axle.

18. valves as claimed in claim 15, axial in described mandrel of wherein said ball seat Motion makes to be in fluid communication between described mandrel and described passage.

19. valves as claimed in claim 15, wherein between described mandrel and described housing and The opening of described mandrel and described housing opening be axially provided above the first chamber, Between described mandrel and described housing and at the opening of described mandrel and the axle of the opening of described housing It is provided with downwards the second chamber.

20. valves as claimed in claim 19, the pressure in wherein said first chamber is with described Pressure balance in second chamber.