CN105507869A - Sliding sleeve opening-closing string - Google Patents

Sliding sleeve opening-closing string Download PDF

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Publication number
CN105507869A
CN105507869A CN201410504823.8A CN201410504823A CN105507869A CN 105507869 A CN105507869 A CN 105507869A CN 201410504823 A CN201410504823 A CN 201410504823A CN 105507869 A CN105507869 A CN 105507869A
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CN
China
Prior art keywords
sliding sleeve
pipe nipple
downstream
hydraulic
housing
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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.)
Granted
Application number
CN201410504823.8A
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Chinese (zh)
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CN105507869B (en
Inventor
朱玉杰
朱和明
马兰荣
杨德锴
薛占峰
李富平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering
Original Assignee
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering
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Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Research Institute of Petroleum Engineering filed Critical China Petroleum and Chemical Corp
Priority to CN201410504823.8A priority Critical patent/CN105507869B/en
Publication of CN105507869A publication Critical patent/CN105507869A/en
Application granted granted Critical
Publication of CN105507869B publication Critical patent/CN105507869B/en
Active legal-status Critical Current
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Abstract

The invention relates to a sliding sleeve opening-closing string, comprising a coiled tube, a hydraulic sub and an anchor sub. An opening-closing sub that may engage with a sliding sleeve under third hydraulic pressure is disposed on the coiled tube. The hydraulic sub is disposed at the upstream of the opening-closing sub and can drive the opening-closing sub to axially move under first hydraulic pressure. The anchor sub comprises an anchor member that can protrude radially out under second hydraulic pressure so as to be fixedly connected with the sliding sleeve and can return after the second hydraulic pressure is removed; the first hydraulic pressure is greater than the second hydraulic pressure, and the second hydraulic pressure is greater than the third hydraulic pressure. The sliding sleeve opening-closing string can effectively transfer driving force to the sliding sleeve, and sliding sleeve opening-closing construction is highly reliable.

Description

Sliding sleeve switch tubing string
Technical field
The present invention relates to Oil/gas Well field, particularly a kind of sliding sleeve switch tubing string.
Background technology
Horizontal well multistage sliding sleeve staged fracturing technology is a kind of important means of unconventionaloil pool resource exploitation, has that structure is simple, construction reliability high.This fracturing technique is widely used in the fracturing yield increasing transformation of shale gas, hyposmosis payzone, oil sheet.In the oil gas well mining later stage, as run into payzone water outlet, selective exploitation and the situation such as pressure break again, then needing down sliding sleeve switch tubing string to carry out sliding sleeve switch operation, to the selective closedown of sliding sleeve, reaching and realizing bottom water plugging, layering shutoff test, ask the objects such as product.
Under enter switch tubing string switching manipulation is carried out to horizontal segment sliding sleeve time, because the rigidity of switch tubing string is low, flexible large, load transfer is very difficult, and driving force effectively can not pass to sliding sleeve, is difficult to the switching manipulation realizing sliding sleeve.Therefore, a kind of switch tubing string that driving force effectively can be passed to sliding sleeve is needed.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of sliding sleeve switch tubing string.Switch drive power effectively can be passed to sliding sleeve by sliding sleeve switch tubing string of the present invention effectively, thus improves the reliability of sliding sleeve switch construction.
According to the present invention, propose a kind of sliding sleeve switch tubing string, comprise coiled tubing, coiled tubing is provided with the switch pipe nipple that can engage with sliding sleeve under the 3rd hydraulic coupling, be arranged on switch pipe nipple upstream and the hydraulic pressure pipe nipple of driving switch pipe nipple axially-movable under the first hydraulic coupling, and grappling pipe nipple, grappling pipe nipple comprises and radially outward can protrude and the anchor log that is fixedly connected with sliding sleeve under the second hydraulic coupling, and after removing the second hydraulic coupling, anchor log resets; First hydraulic coupling is greater than the second hydraulic coupling, and the second hydraulic coupling is greater than the 3rd hydraulic coupling, in use, enters in fracturing string by under switch tubing string, is filled with liquid and is pressurized to the 3rd hydraulic coupling, switch pipe nipple is engaged with sliding sleeve in coiled tubing; By liquid pressing to the second hydraulic coupling, anchor log is fixedly connected with sliding sleeve; By liquid pressing to the first hydraulic coupling, make the pipe nipple axially-movable of hydraulic pressure pipe nipple driving switch and realize opening or closing sliding sleeve.
As those skilled in the art knows, " fracturing string " is formed by connecting by multiple sliding sleeve, and therefore sliding sleeve switch tubing string of the present invention can be used for some or certain some sliding sleeve of opening or closing in fracturing string.According to sliding sleeve switch tubing string of the present invention, after grappling pipe nipple is fixedly connected with sliding sleeve, sliding sleeve switch tubing string entirety just can not be moved, except switch pipe nipple relative to fracturing string (or sliding sleeve).When sliding sleeve switch tubing string overall motionless, hydraulic pressure pipe nipple can effectively the axially-movable of driving switch pipe nipple to open or close corresponding sliding sleeve.This horizontal segment being in depths, stratum for horizontal well is particularly advantageous, this is the rigidity very low (direction with adaptation level well) due to current used common sliding sleeve switch tubing string, upper carry or transfer this common sliding sleeve switch tubing string time, be difficult to effectively switch drive power be passed to sliding sleeve, thus be difficult to realization and open or close sliding sleeve.In addition, sliding sleeve switch tubing string of the present invention can realize opening for one time, closing multiple sliding sleeve, significantly improves efficiency of construction.
In one embodiment, grappling pipe nipple is adjacent to the upstream being arranged on hydraulic pressure pipe nipple.Like this, grappling pipe nipple and sliding sleeve be fixedly connected with the motion that can not affect switch pipe nipple.
In one embodiment, switch pipe nipple comprises: the cylindrical body that upstream end thereof is connected with hydraulic pressure pipe nipple, the external surface upstream portion of cylindrical body is provided with groove, joining tool, it comprises the lock dog be arranged in groove, lock dog comprises the lead-in chamfered being in its catchment, the first elastic component is provided with between lock dog and groove, be set in the guide housing at the middle part of cylindrical body, guide housing comprise be in its upstream portion with the interactional leading end of lead-in chamfered and the force structure body being in leading end downstream, force structure physical efficiency is born towards the 3rd hydraulic coupling in downstream or is made guide housing axially-movable towards upstream First Driving Force, when leading end is towards downstream movement, joining tool protrudes and engages with sliding sleeve, when leading end is towards movements upstream, joining tool is retracted and separates with sliding sleeve.
By hydraulic control power, just can realize sliding sleeve switch instrument being engaged with sliding sleeve automatically or separating, thus facilitate follow-up taking-up sliding sleeve switch tubing string.The transmission of hydraulic coupling, not by means of any other physical unit, therefore contributes to realizing long distance transmission fluid pressure.In addition, the structure of the switch pipe nipple of this use hydraulic coupling operation is also comparatively compact, and consumable accessory is longer for less thus application life.The source applying hydraulic coupling on the ground, is easy to the size of hydraulic control power.
In one embodiment, joining tool also comprises the retaining groove be arranged in groove, and retaining groove is connected with cylindrical body by shear pin, and lock dog is arranged in retaining groove and the first elastic component is between lock dog and retaining groove.By this structure, when sliding sleeve switch tubing string can not depart from sliding sleeve smoothly, by carry sliding sleeve switch tubing string and cut off shear pin and lock dog can be pushed back in retaining groove by force, realize the safe retrieving of sliding sleeve switch tubing string.
In one embodiment, the downstream that the sidewall of cylindrical body is in groove is provided with the fluid apertures run through, force structure body comprise be positioned at fluid apertures downstream and with the outer wall of cylindrical body be slidably matched first protruding, the upstream stress surface of the first projection is communicated with fluid apertures to bear the 3rd hydraulic coupling, and downstream stress surface contacts with the second elastic component on the downstream portion being arranged on cylindrical body and bears First Driving Force.In one embodiment, cylindrical body comprise be positioned at fluid apertures upstream and with the inwall of guide housing be slidably matched second protruding, first protruding and the second projection surrounds hydraulic cavities.Hydraulic cavities contributes to applying the 3rd hydraulic coupling to force structure body and moves to drive guide housing.
In one embodiment, guide housing also comprises the extension being in force structure body downstream, and extension forms the second elastic component chamber together with the downstream portion of cylindrical body, and the second elastic component is in described second elastic component chamber.Second elastic component chamber can play a protective role to the second elastic component, extends the application life of sliding sleeve switch instrument.
In one embodiment, hydraulic pressure pipe nipple comprises: fixing housing, the piston rod passing the hollow of housing downstream face is extended in housing, piston rod comprises reception first hydraulic coupling and the upstream portion coordinated with housing slidingtype, extend to the downstream portion be connected outside housing downstream face and with the cylindrical body of switch pipe nipple, and the middle part be between upstream portion and downstream portion, the fitting face of upstream portion and housing is provided with jump ring, the middle part of piston rod is provided with the return springs contacted with upstream portion; In the initial state, piston rod is connected by jump ring with housing, when upstream portion is subject to the first hydraulic coupling, piston rod relative to housing to downstream movement driving switch pipe nipple to downstream movement and pressed home elastic component; After removing the first hydraulic coupling, return springs piston rod is upstream moved relative to housing and is returned to original state.The control member of this hydraulic pressure pipe nipple only comprises jump ring and return springs, and structure is simple, reliable, is convenient to manufacture and safeguard.
In one embodiment, the middle part of piston rod forms hydraulic reposition chamber together with housing, and return springs is arranged in hydraulic reposition chamber.Hydraulic reposition chamber can play a protective role to return springs, extends the application life of sliding sleeve switch instrument.
In one embodiment, housing is provided with the flowing hole by hydraulic reposition chamber and external environment connect.By arranging flowing hole, hydraulic reposition chamber is not dead space but and external environment connect.During piston rod movement, the air in hydraulic reposition chamber can be passed through discharge orifice and flows into or flow out hydraulic pressure reseting cavity, it reduces the resistance of motion of piston rod.
In this application, term " original state " refers to the state before the operation of sliding sleeve switch tubing string.It is upstream that term " downstream ", " upstream " are defined as near well head, is downstream away from well head.Term " inclined-plane " is defined as the face angled with the radial direction of cylindrical body.
Compared with prior art, the invention has the advantages that: driving force effectively can be passed to sliding sleeve by (1) sliding sleeve switch tubing string of the present invention effectively, the reliability of sliding sleeve switch construction is high, and is specially adapted to horizontal well.(2) sliding sleeve switch tubing string of the present invention can realize the switch of control well low sleeve on the ground, is very easy to operation.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows the schematic diagram according to sliding sleeve switch tubing string of the present invention.
Fig. 2 shows the schematic diagram of the switch pipe nipple according to sliding sleeve switch tubing string of the present invention.
Fig. 3 is the zoomed-in view of I part in Fig. 2.
Fig. 4 shows the schematic diagram of the hydraulic pressure pipe nipple according to sliding sleeve switch tubing string of the present invention.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the ratio of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 show schematically show the structure according to sliding sleeve switch tubing string 100 of the present invention.As shown in Figure 1, sliding sleeve switch tubing string 100 comprises coiled tubing 1, and coiled tubing 1 is provided with grappling pipe nipple 2, hydraulic pressure pipe nipple 3 and switch pipe nipple 4.Grappling pipe nipple 2 is for being fixedly connected with sliding sleeve (not shown); Switch pipe nipple 4 can engage with sliding sleeve or separate; When switch pipe nipple 4 engages with sliding sleeve, the axially-movable of hydraulic pressure pipe nipple 3 meeting driving switch pipe nipple 4 is to open or close sliding sleeve.In one embodiment, grappling pipe nipple 2 is adjacent to the upstream being arranged on hydraulic pressure pipe nipple 3, and switch pipe nipple 4 is adjacent to the downstream being arranged on hydraulic pressure pipe nipple 3, like this after grappling pipe nipple 2 is fixedly connected with sliding sleeve, can not affect the motion of switch pipe nipple 4.In addition, be also provided with differential opening mechanism 5 at the extreme ends of sliding sleeve switch tubing string 100, the 26S Proteasome Structure and Function of differential opening mechanism 5 is known by those skilled in the art, repeats no more here.Below, grappling pipe nipple 2, hydraulic pressure pipe nipple 3 and switch pipe nipple 4 is described in detail respectively.
As shown in Figure 1, grappling pipe nipple 2 comprises anchor log 21, and anchor log 21 can radially outward protrude under the second action of hydraulic force in grappling pipe nipple 2 and be fixedly connected with fracturing string or sliding sleeve.In one embodiment, anchor log 21 can be the hydraulic anchor known by those skilled in the art, repeats no more here.
Fig. 2 shows the structure of switch pipe nipple 4.As shown in Figure 2, switch pipe nipple 4 comprises cylindrical body 22, and the upstream end thereof of cylindrical body 22 is connected with the piston rod 11 (as shown in Figure 3) of hydraulic pressure pipe nipple 3, and the external surface upstream portion of cylindrical body 22 is provided with groove 30.
Switch pipe nipple 4 also comprises joining tool, and joining tool comprises the lock dog 17 be arranged in groove 30, arranges the first elastic component 18, such as spring between lock dog 17 and groove 30.Lock dog 17 is provided with engage with sliding sleeve be engaged body 31, the external surface of downstream edge of occlusion body 31 is configured to lead-in chamfered 32.
Switch pipe nipple 4 also comprises guide housing 19.Guide housing 19 is set in the middle part of cylindrical body 22, and comprises the leading end 33 being in upstream and the force structure body 34 being in leading end 33 downstream.Fig. 3 show in more detail the structure of force structure body 34.As shown in Figure 3, the sidewall of cylindrical body 22 is provided with the fluid apertures 20 run through in the downstream of groove 30.Force structure body 34 comprises the first projection 47, first projection 47 being positioned at fluid apertures 20 downstream and protrudes towards cylindrical body 22 from guide housing 19.The second projection 48 radially outward protruded from cylindrical body 22 is also had in the upstream of fluid apertures 20.First protruding 47 is slidably matched with the outer wall of cylindrical body 22, and the second projection 48 is slided with the inwall of guide housing 19 and joined, thus the first protruding 47 and second projection 48 defines hydraulic cavities 35, and fluid apertures 20 is in the scope of hydraulic cavities 35.Thus, the upstream stress surface 50 of the first projection 47 can accept the 3rd hydraulic coupling.The downstream portion of cylindrical body 22 is provided with the second elastic component 21, such as, is wrapped in the helical spring on the downstream portion of cylindrical body 22.Second elastic component 21 contacts with the downstream stress surface 51 of the first projection 47, thus the downstream stress surface 51 of the first projection 48 can accept the First Driving Force that produced by the second elastic component 21.In a preferred embodiment, guide housing 19 also comprises the extension 36 being in force structure body 34 downstream.Extension 36 forms the second elastic component chamber 37, second elastic component 21 and is arranged in the second elastic component chamber 37 to protect the second elastic component 21 not by the impact of external object together with the downstream portion of cylindrical body 22.
Switch pipe nipple 4 according to Fig. 2 and 3, in the initial state, the leading end 33 of guide housing 19 overcomes the active force of the first elastic component 18 and lock dog 17 is pressed to retracted position.When applying towards the 3rd hydraulic coupling in downstream, force structure body 34 (or first projection 47) can bear the 3rd hydraulic coupling and make guide housing 19 towards downstream movement.Leading end 33 also can leave lead-in chamfered 32 therefore and towards downstream movement.Lock dog 17 radially outward protrudes and engages with sliding sleeve under the effect of the first elastic component 18.In the process, the second elastic component 21 is squeezed.After removing the 3rd hydraulic coupling, second elastic component 21 can apply towards upstream First Driving Force force structure body 34 (or first projection 47), and guide housing 19 is therefore and towards movements upstream and make leading end 33 press down lock dog 17 along lead-in chamfered 32 to make its radial direction retract to separate with sliding sleeve inwards.
Fig. 4 show schematically show the structure of hydraulic pressure short circuit 3.As shown in Figure 4, hydraulic pressure pipe nipple 3 comprises fixing housing 9 and in housing 9, extends the piston rod 11 outside the downstream end face passing housing 9.Piston rod 11 is hollow structure, to be filled with hydraulic fluid in piston rod 11.
The upstream portion 6 of piston rod 11 coordinates with housing 9 slidingtype, and the end face 42 of upstream portion 6 is configured to accept the first hydraulic coupling.The downstream portion 13 of piston rod 11 to extend to outside housing 9 and is connected with the upstream extremity of the cylindrical body 22 of switch pipe nipple 4.The middle part 8 be between upstream portion 6 and downstream portion 13 of piston rod 11 forms hydraulic reposition chamber 41 together with housing 9.The return springs 10 contacted with upstream portion 6 is installed in hydraulic reposition chamber 41, such as, is wrapped in the helical spring on middle part 8.In addition, the fitting face of upstream portion 6 with housing 9 is provided with the jump ring 7 for being connected with housing 9 by piston rod 11.When piston rod 11 is subject to the first hydraulic coupling, jump ring 7 can be extruded piston rod 11 can be moved relative to housing 9.This jump ring 7 is known by those skilled in the art, repeats no more here.
Hydraulic pressure pipe nipple 3 according to Fig. 4, in the initial state, piston rod 11 is connected by jump ring 7 with housing 9.When being filled with hydraulic fluid and being pressurized to the first hydraulic coupling in sliding sleeve switch tubing string 100, piston rod 11 is relative to housing 9 to downstream movement, thus driving switch pipe nipple 4 is to downstream movement.In the process, return springs 10 is squeezed.After removing the first hydraulic coupling, return springs 10 piston rod 11 upstream can be moved relative to housing 9 and is returned to original state.
Preferably, housing 9 is provided with the flowing hole 12 of hydraulic reposition chamber 41 with external environment connect.Like this, hydraulic reposition chamber 41 is not dead space but and external environment connect.Between the moving period of piston rod 11, the air in hydraulic reposition chamber 41 can be passed through discharge orifice 12 and flows into or flow out hydraulic pressure reseting cavity 41, it reduces the resistance of motion of piston rod 11.
The operating process of sliding sleeve switch tubing string 100 is described according to Fig. 1 to Fig. 4 below.
Sliding sleeve switch tubing string 100 is lowered into the predetermined sliding sleeve position of down-hole, then in coiled tubing 1, pumps into a certain amount of hydraulic fluid.
First, hydraulic fluid is pressurized to the 3rd hydraulic coupling of 3 ~ 4MPa.The guide housing 19 of the 3rd hydraulic coupling pull switch pipe nipple 4 moves towards downstream, makes lock dog 17 radially outward protrude in the effect of the first elastic component 18 and engage with predetermined sliding sleeve.In the process, the second elastic component 21 is squeezed.
Then, hydraulic fluid is pressurized to further second hydraulic coupling of 6 ~ 7MPa.The anchor log 21 of grappling pipe nipple 2 radially outward protrudes and is fixedly connected with other sliding sleeves of fracturing string under the second hydraulic coupling.It should be noted that, the sliding sleeve be fixedly connected with anchor log 21 is the sliding sleeve being in predetermined sliding sleeve upstream.
Then, hydraulic fluid is pressurized to further first hydraulic coupling of 9 ~ 10MPa.The piston rod 11 of hydraulic pressure pipe nipple 3 makes jump ring 7 shrink and relative to housing 9 to downstream movement, thus driving switch pipe nipple 4 is to downstream movement.Due to now, switch pipe nipple 4 and predetermined sliding sleeve combine, and therefore can realize opening or closing this sliding sleeve.
Complete after predetermined sliding sleeve opens or closes operation, by pressure release in coiled tubing 1 to pressure lower than the 3rd hydraulic coupling.Second elastic component 21 promotes guide housing 19 and moves towards upstream, and lock dog 17 and predetermined sliding sleeve are thrown off.Anchor log 21 is no longer fixedly linked with fracturing string.Return springs 10 piston rod 11 is upstream moved relative to housing 9 and is returned to original state.Now, sliding sleeve switch tubing string 100 can be tripped out in well.
In abnormal conditions, lock dog 17 can not normally be retracted and be difficult to sliding sleeve switch tubing string 100 to trip out in well.For this reason, also in groove 30, be provided with retaining groove 15, and retaining groove 15 is connected with cylindrical body 22 by shear pin 16.In such an implementation, lock dog 17 to be arranged in retaining groove 15 and the first elastic component 18 is between lock dog 17 and retaining groove 15.Like this, when lock dog 17 can not normally be retracted, continuation is carried sliding sleeve switch tubing string 100, shear pin 16 is cut off.Like this, guide housing 19 can be made to be pushed back by force by lock dog 17, and realize safe retrieving sliding sleeve switch tubing string 100.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristic mentioned in each embodiment all can combine in any way.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.

Claims (10)

1. a sliding sleeve switch tubing string, comprising:
Coiled tubing, described coiled tubing is provided with the switch pipe nipple that can engage with sliding sleeve under the 3rd hydraulic coupling, is arranged on described switch pipe nipple upstream and under the first hydraulic coupling, drives the hydraulic pressure pipe nipple of described switch pipe nipple axially-movable, and grappling pipe nipple,
Wherein, described grappling pipe nipple comprises and radially outward can protrude and the anchor log that is fixedly connected with described sliding sleeve under the second hydraulic coupling, and after removing described second hydraulic coupling, described anchor log resets; Described first hydraulic coupling is greater than the second hydraulic coupling, and described second hydraulic coupling is greater than the 3rd hydraulic coupling,
In use, will enter in fracturing string under described switch tubing string, in described coiled tubing, be filled with liquid and be pressurized to the 3rd hydraulic coupling, described switch pipe nipple is engaged with described sliding sleeve; By described liquid pressing to the second hydraulic coupling, described anchor log is fixedly connected with sliding sleeve; By described liquid pressing to the first hydraulic coupling, described hydraulic pressure pipe nipple is made to drive the axially-movable of described switch pipe nipple and realize opening or closing described sliding sleeve.
2. sliding sleeve switch tubing string according to claim 1, is characterized in that, described switch pipe nipple comprises:
The cylindrical body that upstream end thereof is connected with described hydraulic pressure pipe nipple, is provided with groove at the external surface upstream portion of described cylindrical body,
Joining tool, it comprises the lock dog be arranged in described groove, and described lock dog comprises the lead-in chamfered being in its catchment, is provided with the first elastic component between described lock dog and groove,
Be set in the guide housing at the middle part of cylindrical body, described guide housing comprise be in its upstream portion with the interactional leading end of described lead-in chamfered and the force structure body being in leading end downstream, described force structure physical efficiency is born towards the 3rd hydraulic coupling in downstream or is made guide housing axially-movable towards upstream First Driving Force;
Wherein, when described leading end is towards downstream movement, described joining tool protrudes and engages with sliding sleeve; When described leading end is towards movements upstream, described joining tool is retracted and separates with sliding sleeve.
3. sliding sleeve switch tubing string according to claim 2, it is characterized in that, the downstream that the sidewall of described cylindrical body is in described groove is provided with the fluid apertures run through, described force structure body comprise be positioned at described fluid apertures downstream and with the outer wall of described cylindrical body be slidably matched first protruding, the upstream stress surface of described first projection is communicated with described fluid apertures to bear the 3rd hydraulic coupling, and downstream stress surface contacts with the second elastic component on the downstream portion being arranged on described cylindrical body and bears First Driving Force.
4. sliding sleeve switch tubing string according to claim 3, is characterized in that, described cylindrical body comprise be positioned at described fluid apertures upstream and with the inwall of described guide housing be slidably matched second protruding, described first protruding and the second projection surrounds hydraulic cavities.
5. the sliding sleeve switch tubing string according to claim 3 or 4, it is characterized in that, described guide housing also comprises the extension being in described force structure body downstream, described extension forms the second elastic component chamber together with the downstream portion of described cylindrical body, and described second elastic component is in described second elastic component chamber.
6. the sliding sleeve switch tubing string according to any one of claim 1 to 5, it is characterized in that, described joining tool also comprises the retaining groove be arranged in described groove, described retaining groove is connected with described cylindrical body by shear pin, and described lock dog is arranged in described retaining groove and described first elastic component is between described lock dog and retaining groove.
7. the sliding sleeve switch tubing string according to any one of claim 1 to 6, is characterized in that, described hydraulic pressure pipe nipple comprises:
Fixing housing, the piston rod passing the hollow of housing downstream face is extended in described housing, described piston rod comprises reception first hydraulic coupling and the upstream portion coordinated with described housing slidingtype, extend to the downstream portion be connected outside described housing downstream face and with the cylindrical body of described switch pipe nipple, and the middle part be between described upstream portion and downstream portion, the fitting face of described upstream portion and housing is provided with jump ring, the middle part of described piston rod is provided with the return springs contacted with described upstream portion
In the initial state, described piston rod is connected by described jump ring with described housing, and when described upstream portion is subject to the first hydraulic coupling, described piston rod drives described switch pipe nipple to downstream movement and pressed home elastic component relative to housing to downstream movement; After removing the first hydraulic coupling, described return springs drives described piston rod upstream move relative to housing and be returned to original state.
8. sliding sleeve switch tubing string according to claim 7, is characterized in that, the middle part of described piston rod forms hydraulic reposition chamber together with described housing, and described return springs is in described hydraulic reposition chamber.
9. sliding sleeve switch tubing string according to claim 8, is characterized in that, is provided with the flowing hole by described hydraulic reposition chamber and external environment connect on the housing.
10. the sliding sleeve switch tubing string according to any one of claim 1 to 9, is characterized in that, described grappling pipe nipple is adjacent to the upstream being arranged on described hydraulic pressure pipe nipple.
CN201410504823.8A 2014-09-26 2014-09-26 Sliding sleeve switch tubing string Active CN105507869B (en)

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Application Number Priority Date Filing Date Title
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CN105507869B CN105507869B (en) 2018-03-30

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109838217A (en) * 2017-11-28 2019-06-04 中国石油大学(北京) With brill pipeline scraper
CN110578498A (en) * 2019-08-12 2019-12-17 浙江大学 Self-adaptive air release rod and shallow layer air controlled air release recovery system and method
CN114059963A (en) * 2020-07-31 2022-02-18 中国石油化工股份有限公司 Underground pipe column and hydraulic opening tool for opening sliding sleeve switch
CN114059964A (en) * 2020-07-31 2022-02-18 中国石油化工股份有限公司 Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly

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US4603741A (en) * 1985-02-19 1986-08-05 Hughes Tool Company Weight actuated tubing valve
US6763892B2 (en) * 2001-09-24 2004-07-20 Frank Kaszuba Sliding sleeve valve and method for assembly
CN102383760B (en) * 2011-07-22 2014-04-30 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Design method of sliding sleeve switch
CN102373900B (en) * 2011-09-30 2014-03-12 中国石油化工股份有限公司 Staged fracturing well completion method using hydraulic-controlled switch to open/close controllable valves
CN103573215B (en) * 2012-07-31 2016-06-01 中国石油化工股份有限公司 For the switching tools of the sliding cover of switched attenuator switched-mode
CN103775047B (en) * 2012-10-25 2016-03-02 中国石油化工股份有限公司 Sliding sleeve switch device
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CN103061709B (en) * 2013-01-22 2015-11-18 中国石油天然气股份有限公司 Sliding sleeve control tool and the hydraulic control sliding sleeve of operation can be surmounted
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109838217A (en) * 2017-11-28 2019-06-04 中国石油大学(北京) With brill pipeline scraper
CN110578498A (en) * 2019-08-12 2019-12-17 浙江大学 Self-adaptive air release rod and shallow layer air controlled air release recovery system and method
CN114059963A (en) * 2020-07-31 2022-02-18 中国石油化工股份有限公司 Underground pipe column and hydraulic opening tool for opening sliding sleeve switch
CN114059964A (en) * 2020-07-31 2022-02-18 中国石油化工股份有限公司 Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly

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