CN109138880A - Bidirectionally anchoring device - Google Patents
Bidirectionally anchoring device Download PDFInfo
- Publication number
- CN109138880A CN109138880A CN201811262808.1A CN201811262808A CN109138880A CN 109138880 A CN109138880 A CN 109138880A CN 201811262808 A CN201811262808 A CN 201811262808A CN 109138880 A CN109138880 A CN 109138880A
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- Prior art keywords
- cone
- tubing string
- connector
- shear pin
- slips
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- 238000004873 anchoring Methods 0.000 title claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000003129 oil well Substances 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000008034 disappearance Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 15
- 238000013461 design Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of bidirectionally anchoring devices, including releasing gadget, unfreezing mechanism, anchor mechanism and seat card locking mechanism, the releasing gadget includes top connection (1), sliding sleeve (2), it first shear pin (3) and mentions hanging steel ball (4), it is internal that sliding sleeve (2) is built in the top connection (1), top connection (1) is fixed together by the first shear pin (3) with sliding sleeve (2), top connection (1) middle and lower part is provided with bellmouth, hanging steel ball (4) is mentioned to be built in bellmouth, the present invention uses releasing type structure, anchoring is reliable, structure is simple, it can satisfy minor diameter cased well process requirement, or mating other tools meet special requirement.
Description
Technical field
The present invention relates to a kind of anchors, especially bidirectionally anchoring device.
Background technique
Oil well pipe anchor is commonly used a kind of supporting tool in oil extraction, is mainly used for anchoring string and exists
On casing wall, stratum or other strength is blocked to transmit along tubing string, prevents drilling pipe bending from perhaps wriggling or other productions is protected to use
Main tool etc., most common to determine device just like hydranlic tubing holddown in production, this tool generally connect use with packer,
Principle is to reach anchoring purpose, hydraulic disappearance using hydraulic inside tubing string, and anchorage force also just disappears, and tubing string anchoring releases,
Be commonly used in fracturing string, a kind of tubing spinning anchor usually used in oil mining tubing string, it be by rotation pipeline,
It realizes anchor anchoring movement, realizes that anchoring releases by upper lifting pipe post, this kind of anchor is used in whole tubing string and uses, right
In Back-off Pipe String, the anchoring function of anchor is generally combined into one with packer packing plugging function, that is, is designed to that Y441, Y445 type seal
Every device, this kind of packer design structure is complicated, for normal casing oil well, has mature tool and matches, there is no ask
Topic, for the casing deformation well after overhaul, since casing has carried out internal subsidy, internal diameter becomes smaller, and required packer is minor diameter
Packer, design are limited, and a kind of relatively good scheme is exactly that anchoring function and closure function are separated, that is, use minor diameter anchor
Realize that Back-off Pipe String is anchored hanging function, mating minor diameter Y341 packer, which is realized, to be blocked, and is based on considerations above, is devised the hair
Bright, the present invention uses releasing type structure, and anchoring is reliable, and structure is simple, can satisfy minor diameter cased well process requirement, Huo Zhepei
It covers other tools and meets special requirement.
Summary of the invention
The object of the present invention is in view of the above shortcomings of the prior art, provide a kind of bidirectionally anchoring device, which is used
Releasing type structure, anchoring is reliable, and structure is simple, can satisfy minor diameter cased well process requirement or mating other tools are full
Sufficient special requirement.
To reach above-mentioned technical effect, the technical solution adopted in the present invention is as follows:
Bidirectionally anchoring device of the present invention, including releasing gadget, unfreezing mechanism, anchor mechanism and seat card locking mechanism, the loss mobile phone
Structure includes top connection, sliding sleeve, the first shear pin and mentions hanging steel ball, and sliding sleeve is built in inside the top connection, and top connection is logical
It crosses the first shear pin to be fixed together with sliding sleeve, top connection middle and lower part is provided with bellmouth, mentions hanging steel ball and is built in
In bellmouth, described proposes hanging steel ball medial support on sliding sleeve lower outside face, mentions and protruding under top connection on the outside of hanging steel ball
End disc forms spherical shape and mentions hanging platform rank.
As a preferred solution of the present invention, the unfreezing mechanism include fishing head, connector, spring detent, the second shear pin,
Supporter, connector, central tube and lower contact, the fishing head, which is internally provided with, mentions extension groove, and fishing head lower part is provided with screw thread,
The spherical shape of the releasing gadget proposes the proposing extension groove formation that hanging platform rank proposes inside the fishing head described in hanging over and proposes extension relationship, described
Spring detent connect with the connector upper end by screw thread, supporter be built in described in spring detent upper end, the branch
Support body is connect with spring detent by the second shear pin；There are the boss with cone angle, the bullet in the spring detent upper end outer
Spring pawl lower end and the connector screwed connection form first step, the spring detent upper end exterior boss and and First
Recess section is formed between rank, is step-like through-hole inside the connector, the connector front end is located in recess section, and
Spring detent forms limit connection relationship；Screw thread, connector and fishing head is provided with outside the connector front end to connect by the way that screw thread is fixed
It connects, the connector lower end is connect by screw thread with the central tube, and the central tube and lower contact are connected by screw thread
It connects.
As a preferred solution of the present invention, the anchor mechanism be located at central tube periphery, anchor mechanism include upper cone,
Bi-directional slip, sheath, reset spring, lower cone and third shear pin, the upper cone upper end are connected by screw thread and connector
It connects, sheath is articulated on upper cone outer steps by interior step, and the bi-directional slip is placed in position in the sheath
It sets, the bi-directional slip upper end conical surface abuts against on the epicone body cone, has barrier in the middle part of the sheath, resets
Spring is placed in the middle part of the sheath between barrier and bi-directional slip middle part, and the lower cone is located inside the sheath,
The lower cone conical surface abuts against under the bi-directional slip in end cone face, and third shear pin is the sheath and lower cone
Body links together.
As a preferred solution of the present invention, the seat card locking mechanism is located at central tube periphery, sits card locking mechanism packet
Anti- dynamic set, the 4th shear pin, lock ring, lock pillar, cylinder sleeve and piston are included, anti-move is socketed in outside the lower cone
Portion, the 4th shear pin link together the lower cone and the described anti-dynamic set, the cylinder sleeve with it is described
Anti- dynamic set lower end inside screwed connection, slot between being formed between the cylinder sleeve and the anti-dynamic threading connection is described
Between lock ring is located in slot, by screwed connection, piston is placed between central tube and cylinder sleeve for the cylinder sleeve and the lower contact.
As a preferred solution of the present invention, it is equipped with cotter slot in the middle part of sliding sleeve, pin thread hole is equipped in the middle part of top connection,
The first shear pin main body screw is connect with pin thread hole, and partial insertion is sheared in the first shear pin front end
In the sliding sleeve cotter slot, the top connection is fixedly connected on one by first shear pin and the sliding sleeve
It rises.
As a preferred solution of the present invention, there are four the quantity of the bellmouth, four bellmouth minimum diameters are less than
The diameter for mentioning hanging steel ball.
As a preferred solution of the present invention, the connector lower end connect to form second with central tube by screw thread
Rank, the upper cone inner hole are staircase structural model, and upper cone reduced diameter section is socketed on the central tube, second step pair
The upper cone moves up to form limit.
As a preferred solution of the present invention, there is cylindric step outside the upper cone, have circle inside the sheath
Columnar step, the sheath interior step are articulated on the upper cone outer steps.
As a preferred solution of the present invention, cotter slot there are two opening outside the lower cone, the sheath lower end is set
It is equipped with pin thread hole, the third shear pin front end is inserted into the cotter slot outside the lower cone sheath under
Cone links together.
As a preferred solution of the present invention, it is equipped with third step outside the cylinder sleeve upper end, is provided on third step
Screw thread, the anti-dynamic set inside is staircase structural model, and screw thread is provided in anti-dynamic set interior step, and described prevents in dynamic set
The screw thread of portion's setting is fixedly connected with the screw thread outside cylinder sleeve upper end, between being formed between the cylinder sleeve and anti-dynamic threading connection
Slot, lock ring be located at it is described between in slot.
The application method of bidirectionally anchoring device of the present invention is as follows:
A, tubing string is transferred；
B, it is anchored；
C, it blocks；
D, anchoring is reinforced；
E, tubing string unfreezing；
It is specific:
A, it transfers tubing string: on the oil pipe that above-mentioned bidirectionally anchoring device is connected to plugging tubing string by Oil Field, keeping a grip on, bidirectionally anchoring
Device and oil pipe are together in tripping in oil well casing；
B, it is anchored: after tubing string decentralization in place, sitting card bidirectionally anchoring device, squeeze into liquid from well head cementing truck to tubing string, hydraulic coupling is logical
Cross tubing string and be passed to bidirectionally anchoring device central tube, then the inlet opening by opening up on central tube enters in plunger shaft, push piston to
Preceding movement then pushes lock pillar, lower cone to move forward, and when thrust reaches setting dynamics, the 4th shear pin is first cut,
At this point, piston continues to move forward, lock pillar, upper cone are pushed, pushes slips sheath to move forward by third shear pin, slips shield
Set pushes slips Forward, and under the action of epicone body cone, slips Forward constantly expands radially outward simultaneously, when slips is expanded to
It when being adjacent to internal surface of sleeve pipe, can not continue to move to, sheath can not also move, and piston is still moving forward, and thrust passes through lock pillar, upper cone
Cotter slot is transmitted on third shear pin, cuts third shear pin, and lower cone continues to move to, and the final lower cone conical surface is adjacent to
On the lower conical surface of slips, slips is forced tightly to be anchored on casing wall under the action of the thrust of piston and upper/lower cone face,
Realize anchor anchoring movement, in the process, lock pillar is constantly engaged with lock ring, is locked, realizes anchor anchoring movement；
C, block: after anchor implements anchoring movement, discharge line hydraulic coupling removes ground and suppresses pipeline, puts into out of oil pipe
Trip rod, trip rod movement of falling object in tubing string form impact force, and when trip rod encounters sliding sleeve, which passes through
Sliding sleeve acts on the first shear pin, cuts the first shear pin, and sliding sleeve falls, and causes the groove on sliding sleeve to be aligned and mentions extension steel
Ball, mention hanging steel ball radially recycle, top connection lower outside face formed four spherical shapes mention hanging platform rank disappearance, top connection, sliding sleeve and
Steel ball is then deviate from from fishing head, and realization is given up movement, at this point, the above tubing string of top connection from well out, in the anchoring of anchor
Under, plugging tubing string or matched other tools are then suspended on oil well lower part, realize and block function；
D, reinforce anchoring: when bidirectionally anchoring device lower part, which is connected with packer, implements oil well plugging, stratum lower thrust can pass through
Packer, oil pipe are transmitted to the lower contact of bidirectionally anchoring device, and lower contact passes through cylinder sleeve, lock ring, lock pillar and lower cone again, this is pushed away
Power passes to the conical surface under slips, forces slips is stronger to be anchored on casing wall, prevents tubing string from moving up, when strata pressure is given
When tubing string implements downward pulling force, which can be transmitted to lower contact by the central tube and oil pipe of packer, and lower contact passes through again
Strength is passed to upper cone by bidirectionally anchoring device central tube, connector, spring detent, connector etc., and upper cone passes to the strength
The conical surface on slips forces slips is stronger to be anchored on casing wall, prevents tubing string from moving down, in this way, guaranteeing that plugging tubing string exists
It cannot be moved up and down in oil well；
E, tubing string unfreezing: when unfreezing, tripping in fishing string is needed, fishing string front end is connected with fishing tool, and running string is in place
Afterwards, fishing tool impact head can accurately touch the supporter of anchor, under tubing string self weight strength effect, cut the second shear pin
Nail, supporter move down into the root of spring detent, lose and act on spring detent inner support, above mention fishing string at this time, tubing string mentions extension
Fishing head moves up, and fishing head drives connector to move up, and upper end of joint portion forces in spring detent and receives, and continues upper lifting pipe post, fishing head, connector and on
Cone moves up, at this point, spring detent, connector, central tube, lower contact, piston, lock pillar and lower cone remain stationary, slips is lost
Upper support, top unfreezing continue to implement upper actuating work, and upper cone pulls sliding sleeve to move up, and sliding sleeve pulls slips to move up again, slips
The lower conical surface leaves the lower cone conical surface, realizes the unfreezing of slips lower part, so far, completes tubing string solution card motion, rectification Back-off Pipe String is risen
Producing well.
Compared with prior art, the beneficial effects of the present invention are:
1, using releasing type structure, anchoring is reliable, and structure is simple.
2, it can satisfy smaller diameter cased well process requirement or mating other tools meet special requirement.
3, oil well running string can be implemented to be anchored, so that the strength being transmitted on tubing string is transmitted on oil well casing,
It prevents from altering or being bent on tubing string, and then protects other string matching tools.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is schematic structural view of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
Bidirectionally anchoring device of the present invention, including releasing gadget, unfreezing mechanism, anchor mechanism and seat card locking mechanism, by setting
It sets releasing gadget, unfreezing mechanism, anchor mechanism and sits card locking mechanism formation anchor.Bidirectionally anchoring device of the present invention, for oil
The exploitation of field oil well crude oil, it is a kind of oil recovery auxiliary tool, major function be oil well running string can be implemented to be anchored so that
The strength being transmitted on tubing string is transmitted on oil well casing, prevents from altering or being bent on tubing string, and then protects other string matchings
Tool.
Specifically, the releasing gadget includes top connection 1, sliding sleeve 2, the first third shear pin and mentions hanging steel ball 4, sliding sleeve
2 are built in inside the top connection 1, and top connection 1 is fixed together by the first third shear pin with sliding sleeve 2,
1 middle and lower part of top connection is provided with bellmouth, it is preferred that there are four the quantity of the bellmouth, mentions hanging steel ball 4 and is built in taper
In hole, described proposes 4 medial support of hanging steel ball on 2 lower outside face of sliding sleeve, mentions and is protruded under top connection 1 on the outside of hanging steel ball 4
End disc forms spherical shape and mentions hanging platform rank.Preferably, four bellmouth minimum diameters are less than the diameter for mentioning hanging steel ball 4.
Unfreezing mechanism includes fishing head 5, connector 6, spring detent 7, the second shear pin 8, supporter 9, connector 10, central tube
11 and lower contact 12, the fishing head 5, which is internally provided with, mentions extension groove, and fishing 5 lower part of head is provided with screw thread, the releasing gadget
Spherical shape mention hanging platform rank and mention the mentioning extension groove hung over inside the fishing head 5 and formed and propose extension relationship, the spring detent 7 passes through
Screw thread is connect with 10 upper end of connector, and supporter 9 is built in 7 upper end of spring detent, the supporter 9 and bullet
Spring pawl 7 is connected by the second shear pin 8；There are the boss with cone angle, the spring detent 7 in the 7 upper end outer of spring detent
Lower end and the connector screwed connection form first step, the 7 upper end exterior boss of spring detent and and first step
Between form recess section, be step-like through-hole inside the connector 6,6 front end of connector is located in recess section, and
Spring detent 7 forms limit connection relationship；Screw thread is provided with outside 6 front end of connector, connector 6 and fishing head 5 are solid by screw thread
Fixed connection, 10 lower end of connector are connect by screw thread with the central tube 11, the central tube 11 and lower contact
12 pass through screwed connection.Further, it is formed between the spring detent upper end exterior boss and the step formed with connector
Be recessed section, and the recess section butt joint forms limit.
Anchor mechanism is located at central tube periphery, and anchor mechanism includes upper cone 13, bi-directional slip 1, sheath 15, reset spring
16, lower cone 17 and the three the first shear pins 8,10 lower end of connector are connect with central tube 11 by screw thread and form second
Rank, 13 inner hole of upper cone are staircase structural model, and 13 reduced diameter section of upper cone is socketed on the central tube 11, second
Step moves up to form limit to the upper cone 13.
13 upper end of upper cone is connect by screw thread with connector 6, and sheath 15 is articulated in outside upper cone 13 by interior step
On step, the bi-directional slip 14 is placed in 15 medium position of sheath, and the 14 upper end conical surface of bi-directional slip is tight
It leans against on 13 conical surface of upper cone, there is barrier in the middle part of the sheath 15, reset spring 16 is placed in the sheath 15
Between 14 middle part of portion's barrier and bi-directional slip, the lower cone 17 is located inside the sheath 15, the lower cone 17
The conical surface abuts against in the lower end cone face of the bi-directional slip 14, and the three the first shear pins 8 are the sheath 15 and lower cone
17 link together.
Further, there is cylindric step outside upper cone 13, there is cylindric step, the shield inside the shield 15
15 interior steps are covered to be articulated on 13 outer steps of upper cone.
Cotter slot there are two opening outside the lower cone 17,15 lower end of sheath is provided with pin thread hole, institute
Cotter slot outside the three the first 8 front end of the shear pin insertions the stated lower cone 17 is interior to connect sheath 15 and lower cone 17
It is connected together.
It sits card locking mechanism and is located at 11 periphery of central tube, sitting card locking mechanism includes the 19, the 4th shear pin 20 of anti-dynamic set, lock
Ring 21, lock pillar 22, cylinder sleeve 23 and piston 24, it is described it is anti-it is dynamic be socketed in described in lower cone 17 outside, described the four the
Two shear pins 0 link together the lower cone 17 and the anti-dynamic set 19, and the cylinder sleeve 23 is prevented with described
Screwed connection inside 19 lower ends of dynamic set, slot between being formed between the cylinder sleeve 23 and 19 screwed connections of anti-dynamic set are described
Lock ring 21 be located between in slot, by screwed connection, piston 24 is placed in central tube for the cylinder sleeve 23 and the lower contact 12
Between 11 and cylinder sleeve 23.
It is equipped with cotter slot in the middle part of sliding sleeve 2, pin thread hole, the first third shearing are equipped in the middle part of top connection 1
Pin main body screw is connect with pin thread hole, sliding sleeve described in the first third shear pin front end shearing partial insertion
In cotter slot, the top connection 1 is fixed together by the first third shear pin and the sliding sleeve 2.
The sliding sleeve lower half is provided with a baltimore groove, and when giving up, after the sliding sleeve downlink, the hanging steel ball that mentions can
It falls after rise wherein.
It is equipped with third step outside 23 upper end of cylinder sleeve, screw thread, the anti-dynamic set 19 are provided on third step
Inside is staircase structural model, and screw thread, the screw thread that anti-dynamic 19 inside of set is arranged are provided in 19 interior steps of anti-dynamic set
It is fixedly connected with the screw thread outside 23 upper end of cylinder sleeve, slot between being formed between 19 screwed connections of the cylinder sleeve 23 and anti-dynamic set, lock
Ring 21 be located at it is described between in slot.
The working principle of the invention:
The plugging tubing string that above-mentioned anchor and matched other tools are connected to design in Oil Field application is (or other
Tubing string) oil pipe on, together in tripping in oil well casing, after tubing string decentralization in place, start to sit card anchor and (or set envelope simultaneously
Every supporting tools such as devices), liquid is squeezed into from well head cementing truck, hydraulic coupling is passed to central tube by running string, then passes through center
The inlet opening opened up on pipe enters in plunger shaft, pushes piston advances forward, and lock pillar, lower cone is then pushed to move forward, when
When thrust reaches setting dynamics, the 4th shear pin is first cut, at this point, piston continues to move forward, is pushed lock pillar, upper cone, is led to
Crossing third shear pin pushes slips sheath to move forward, and slips sheath pushes slips Forward, under the action of epicone body cone,
Slips Forward simultaneously constantly expands radially outward, when slips, which is expanded to, is adjacent to internal surface of sleeve pipe, can not continue to move to, sheath also without
Method is mobile, and piston is still moving forward, and thrust is transmitted on third shear pin by lock pillar, upper cone cotter slot, cuts third
Shear pin, lower cone continue to move to, and the final lower cone conical surface is adjacent on the lower conical surface of slips, the thrust of piston and upper and lower
Cone forces slips to be tightly anchored on casing wall under the action of face, realizes anchor anchoring movement, in the process, lock pillar
It is constantly engaged with lock ring, is locked, realizing anchor lock out action, after preventing hydraulic coupling from discharging, lower cone retracts, and causes anchor
Failure.
After anchor implements anchoring movement, discharge line hydraulic coupling removes ground and suppresses pipeline, puts into and hits out of oil pipe
Bar, trip rod movement of falling object in tubing string form certain impact force, when trip rod encounters anchor sliding sleeve, the punching
It hits power to act on the first shear pin by sliding sleeve, cuts the first shear pin, sliding sleeve falls, and is causing groove on sliding sleeve just
Good alignment mentions hanging steel ball, mentions hanging steel ball and radially recycles, and four spherical shapes that top connection lower outside face is formed propose the disappearance of hanging platform rank, on
Connector, sliding sleeve, steel ball etc. are then deviate from from fishing head, movement of giving up are realized, at this point, the above tubing string of top connection can be from well
Out, under the anchoring of anchor, plugging tubing string or matched other tools are then suspended on oil well lower part, realize and block function
Deng.
If anchor lower part, which is connected with packer, implements oil well plugging, stratum lower thrust can pass through packer, oil pipe
It is transmitted to the lower contact of anchor, lower contact passes through cylinder sleeve, lock ring, lock pillar, lower cone again, which is passed to and is bored under slips
Face forces slips is stronger to be anchored on casing wall, prevents tubing string from moving up, when strata pressure implements downward pulling force to tubing string
When, which can be transmitted to lower contact by packer central tube, oil pipe, lower contact pass through again anchor central tube, connector,
Strength is passed to upper cone by spring detent, connector etc., which is passed to the conical surface on slips by upper cone, forces slips more firm
Solid be anchored on casing wall, prevent tubing string from moving down, in this way, guarantee plugging tubing string cannot be moved up and down in oil well.
When unfreezing, tripping in fishing string is needed, fishing string front end is connected with special fishing tool, and running string is in place
Afterwards, fishing tool impact head can accurately touch the supporter of anchor, under tubing string self weight strength effect, cut the second shearing
Pin, supporter move down into the root of spring detent, lose and act on spring detent inner support, above propose fishing string, tubing string meeting at this time
It mentions extension fishing head to move up, fishing head drives connector to move up, and upper end of joint portion forces in spring detent and receives, and continues upper lifting pipe post, and fishing head connects
Head, upper cone etc. move up (at this point, spring detent, connector, central tube, lower contact, piston, lock pillar, lower cone etc. remain stationary),
Slips loses upper support, and top unfreezing continues to implement upper actuating work, and upper cone pulls sliding sleeve to move up, and sliding sleeve pulls slips again
It moves up, the conical surface leaves the lower cone conical surface under slips, realizes the unfreezing of slips lower part, so far, completes tubing string solution card motion, so that it may
It rectifies and improves Back-off Pipe String and plays producing well.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of bidirectionally anchoring device, including releasing gadget, unfreezing mechanism, anchor mechanism and seat card locking mechanism, it is characterised in that:
The releasing gadget includes top connection (1), sliding sleeve (2), the first shear pin (3) and mentions hanging steel ball (4), and sliding sleeve (2) is built in
The top connection (1) is internal, and top connection (1) is fixed together by the first shear pin (3) with sliding sleeve (2), upper
Connector (1) middle and lower part is provided with bellmouth, mentions hanging steel ball (4) and is built in bellmouth, and described proposes hanging steel ball (4) medial support
On sliding sleeve (2) lower outside face, mentions protruding from top connection (1) lower end disc on the outside of hanging steel ball (4) and forming spherical shape and mention hanging platform rank.
2. bidirectionally anchoring device according to claim 1, it is characterised in that: the unfreezing mechanism includes fishing head (5), connector
(6), spring detent (7), the second shear pin (8), supporter (9), connector (10), central tube (11) and lower contact (12), institute
The fishing head (5) stated, which is internally provided with, mentions extension groove, and fishing head (5) lower part is provided with screw thread, and the spherical shape of the releasing gadget mentions extension
Step, which mentions hanging over internal the proposing of the fishing head (5) and hanging groove formation, proposes extension relationship, the spring detent (7) by screw thread with
Described connector (10) the upper end connection, supporter (9) are built in described spring detent (7) upper end, the supporter (9) with
Spring detent (7) is connected by the second shear pin (8)；There is the boss with cone angle in described spring detent (7) the upper end outer, described
Spring detent (7) lower end and the connector screwed connection form first step, the spring detent (7) upper end exterior boss and
Recess section is formed between first step, is step-like through-hole, the connector (6) front end position inside the connector (6)
In recess section in, and spring detent (7) formed limit connection relationship；Screw thread, connector are provided with outside described connector (6) front end
(6) it is fixedly connected with fishing head (5) by screw thread, the connector (10) lower end is connected by screw thread and the central tube (11)
It connects, the central tube (11) and lower contact (12) pass through screwed connection.
3. bidirectionally anchoring device according to claim 2, it is characterised in that: the anchor mechanism is located at central tube periphery,
Anchor mechanism includes that upper cone (13), bi-directional slip (14), sheath (15), reset spring (16), lower cone (17) and third are cut
It cuts pin (18), the upper cone (13) upper end is connect by screw thread with connector (6), and sheath (15) is mounted by interior step
On upper cone (13) outer steps, the bi-directional slip (14) is placed in described sheath (15) medium position, and described is double
It is abutted against to slips (14) upper end conical surface on described upper cone (13) conical surface, has barrier in the middle part of the sheath (15), it is multiple
Position spring (16) is placed in the middle part of the sheath (15) between barrier and bi-directional slip (14) middle part, the lower cone (17) position
Internal in the sheath (15), described lower cone (17) conical surface abuts against under the bi-directional slip (14) in end cone face,
Third shear pin (18) links together the sheath (15) with lower cone (17).
4. bidirectionally anchoring device according to claim 3, it is characterised in that: the seat card locking mechanism is located at central tube
(11) peripheral, sitting card locking mechanism includes anti-dynamic set (19), the 4th shear pin (20), lock ring (21), lock pillar (22), cylinder sleeve
(23) and piston (24), anti-move are socketed in lower cone (17) outside, the 4th shear pin (20)
The lower cone (17) and the anti-dynamic set (19) are linked together, the cylinder sleeve (23) and the anti-dynamic set
(19) screwed connection inside lower end, slot between being formed between the cylinder sleeve (23) and described anti-dynamic set (19) screwed connection, institute
Between the lock ring (21) stated is located in slot, the cylinder sleeve (23) and the lower contact (12) pass through screwed connection, piston (24)
It is placed between central tube (11) and cylinder sleeve (23).
5. bidirectionally anchoring device according to claim 1, it is characterised in that: be equipped with cotter slot in the middle part of sliding sleeve (2), connect upper
Pin thread hole is equipped in the middle part of head (1), the first shear pin (3) main body screw is connect with pin thread hole, described
First shear pin (3) front end is sheared described in partial insertion in sliding sleeve cotter slot, and the top connection (1) passes through described the
One shear pin (3) and the sliding sleeve (2) are fixed together.
6. bidirectionally anchoring device according to claim 2, it is characterised in that: there are four the quantity of the bellmouth, and four
Bellmouth minimum diameter is less than the diameter for mentioning hanging steel ball (4)；Connector (10) lower end passes through screw thread and center
Pipe (11) connection forms second step, and the upper cone (13) inner hole is staircase structural model, upper cone (13) reduced diameter section set
It connects on the central tube (11), second step moves up to form limit to the upper cone (13).
7. bidirectionally anchoring device according to claim 3, it is characterised in that: have cylindric outside the upper cone (13)
Rank, the sheath (15) is internal cylindric step, and the sheath (15) interior step is articulated in the upper cone
(13) on outer steps.
8. bidirectionally anchoring device according to claim 4, it is characterised in that: pin there are two being opened outside the lower cone (17)
Slot is followed closely, the sheath (15) lower end is provided with pin thread hole, and third shear pin (18) front end is inserted into described
Sheath (15) and lower cone (17) are linked together in the external cotter slot of lower cone (17).
9. bidirectionally anchoring device according to claim 4, it is characterised in that: be equipped with third outside described cylinder sleeve (23) upper end
Step is provided with screw thread on third step, is staircase structural model inside the anti-dynamic set (19), in anti-dynamic internal platform of set (19)
Screw thread is provided on rank, the screw thread outside the screw thread being arranged inside the anti-dynamic set (19) and cylinder sleeve (23) upper end is fixed to be connected
Connect, slot between being formed between the cylinder sleeve (23) and anti-dynamic set (19) screwed connection, lock ring (21) be located at it is described between in slot.
10. bidirectionally anchoring device according to claim 1, it is characterised in that application method is as follows:
A, tubing string is transferred；
B, it is anchored；
C, it blocks；
D, anchoring is reinforced；
E, tubing string unfreezing；
It is specific:
A, it transfers tubing string: on the oil pipe that above-mentioned bidirectionally anchoring device is connected to plugging tubing string by Oil Field, keeping a grip on, bidirectionally anchoring
Device and oil pipe are together in tripping in oil well casing；
B, it is anchored: after tubing string decentralization in place, sitting card bidirectionally anchoring device, squeeze into liquid from well head cementing truck to tubing string, hydraulic coupling is logical
Cross tubing string and be passed to bidirectionally anchoring device central tube, then the inlet opening by opening up on central tube enters in plunger shaft, push piston to
Preceding movement then pushes lock pillar, lower cone to move forward, and when thrust reaches setting dynamics, the 4th shear pin is first cut,
At this point, piston continues to move forward, lock pillar, upper cone are pushed, pushes slips sheath to move forward by third shear pin, slips shield
Set pushes slips Forward, and under the action of epicone body cone, slips Forward constantly expands radially outward simultaneously, when slips is expanded to
It when being adjacent to internal surface of sleeve pipe, can not continue to move to, sheath can not also move, and piston is still moving forward, and thrust passes through lock pillar, upper cone
Cotter slot is transmitted on third shear pin, cuts third shear pin, and lower cone continues to move to, and the final lower cone conical surface is adjacent to
On the lower conical surface of slips, slips is forced tightly to be anchored on casing wall under the action of the thrust of piston and upper/lower cone face,
Realize anchor anchoring movement, in the process, lock pillar is constantly engaged with lock ring, is locked, realizes anchor anchoring movement；
C, block: after anchor implements anchoring movement, discharge line hydraulic coupling removes ground and suppresses pipeline, puts into out of oil pipe
Trip rod, trip rod movement of falling object in tubing string form impact force, and when trip rod encounters sliding sleeve, which passes through
Sliding sleeve acts on the first shear pin, cuts the first shear pin, and sliding sleeve falls, and causes the groove on sliding sleeve to be aligned and mentions extension steel
Ball, mention hanging steel ball radially recycle, top connection lower outside face formed four spherical shapes mention hanging platform rank disappearance, top connection, sliding sleeve and
Steel ball is then deviate from from fishing head, and realization is given up movement, at this point, the above tubing string of top connection from well out, in the anchoring of anchor
Under, plugging tubing string or matched other tools are then suspended on oil well lower part, realize and block function；
D, reinforce anchoring: when bidirectionally anchoring device lower part, which is connected with packer, implements oil well plugging, stratum lower thrust can pass through
Packer, oil pipe are transmitted to the lower contact of bidirectionally anchoring device, and lower contact passes through cylinder sleeve, lock ring, lock pillar and lower cone again, this is pushed away
Power passes to the conical surface under slips, forces slips is stronger to be anchored on casing wall, prevents tubing string from moving up, when strata pressure is given
When tubing string implements downward pulling force, which can be transmitted to lower contact by the central tube and oil pipe of packer, and lower contact passes through again
Strength is passed to upper cone by bidirectionally anchoring device central tube, connector, spring detent, connector etc., and upper cone passes to the strength
The conical surface on slips forces slips is stronger to be anchored on casing wall, prevents tubing string from moving down, in this way, guaranteeing that plugging tubing string exists
It cannot be moved up and down in oil well；
E, tubing string unfreezing: when unfreezing, tripping in fishing string is needed, fishing string front end is connected with fishing tool, and running string is in place
Afterwards, fishing tool impact head can accurately touch the supporter of anchor, under tubing string self weight strength effect, cut the second shear pin
Nail, supporter move down into the root of spring detent, lose and act on spring detent inner support, above mention fishing string at this time, tubing string mentions extension
Fishing head moves up, and fishing head drives connector to move up, and upper end of joint portion forces in spring detent and receives, and continues upper lifting pipe post, fishing head, connector and on
Cone moves up, at this point, spring detent, connector, central tube, lower contact, piston, lock pillar and lower cone remain stationary, slips is lost
Upper support, top unfreezing continue to implement upper actuating work, and upper cone pulls sliding sleeve to move up, and sliding sleeve pulls slips to move up again, slips
The lower conical surface leaves the lower cone conical surface, realizes the unfreezing of slips lower part, so far, completes tubing string solution card motion, rectification Back-off Pipe String is risen
Producing well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811262808.1A CN109138880B (en) | 2018-10-27 | 2018-10-27 | Bidirectional anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811262808.1A CN109138880B (en) | 2018-10-27 | 2018-10-27 | Bidirectional anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109138880A true CN109138880A (en) | 2019-01-04 |
| CN109138880B CN109138880B (en) | 2023-10-20 |
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ID=64810101
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811262808.1A Active CN109138880B (en) | 2018-10-27 | 2018-10-27 | Bidirectional anchor |
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| CN110485958A (en) * | 2019-08-30 | 2019-11-22 | 大庆华油石油科技开发有限公司 | A kind of oil jacket annulus suppresses the tubing anchor set |
| CN110924905A (en) * | 2019-12-13 | 2020-03-27 | 孙肖 | Layered oil production device for petroleum deformation cased well |
| CN113802994A (en) * | 2020-06-12 | 2021-12-17 | 中国石油化工股份有限公司 | Suspension device |
| CN114427361A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Electro-hydraulic anchoring tool and anchoring method thereof |
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|---|---|
| CN109138880B (en) | 2023-10-20 |
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