CN208380535U - Downhole hydraulic anchoring device - Google Patents
Downhole hydraulic anchoring device Download PDFInfo
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- CN208380535U CN208380535U CN201820712979.9U CN201820712979U CN208380535U CN 208380535 U CN208380535 U CN 208380535U CN 201820712979 U CN201820712979 U CN 201820712979U CN 208380535 U CN208380535 U CN 208380535U
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Abstract
The utility model relates to undergrounds to be anchored technical field of tools, be a kind of downhole hydraulic anchoring device comprising top connection, outer cylinder, central tube, sliding sleeve, slips cover for seat, spring pushing sleeve and lower contact.The utility model reasonable and compact in structure, it is easy to use, compared with current conventional hydraulic anchor, the device of slips anchoring assembly and compressed spring linkage anchoring is realized by sliding sleeve, slips cover for seat, spring pushing sleeve and compressed spring；It is compared compared to current conventional hydraulic anchor, the utility model devises the bigger spring installation cavity in space, allow to the bigger compressed spring of installation dimension, then in the anchoring effect for releasing slips anchoring assembly, it can give slips anchoring assembly enough reset response power, slips anchoring assembly is enable to withdraw；Also, spring installation cavity is a closed cavity, avoids the impurity such as sand grains, dirty grain block, wax stone from entering spring installation cavity, enters in spring installation cavity to impurity occur after avoiding anchoring.
Description
Technical field
The utility model relates to undergrounds to be anchored technical field of tools, be a kind of downhole hydraulic anchoring device.
Background technique
Downhole hydraulic anchor tool is the tool for implementing anchoring using hydraulic pressuring difference inside and outside tubing string, at present in de-plugging, storage
It is widely used in the oil gas fields produced on-site operations such as layer transformation, underground work.
The widely used hydraulic anchor in scene is due to its own structure at present, and there are the deficiencies in terms of following two
Place: 1, it is architectural limitation, the spring compartment of hydraulic anchor is smaller, and the spring sizes of installation are limited to compared with little spring, more to pressure difference
Sensitivity, while anchor fluke retracting force provided by spring is smaller, causes the anchor fluke of hydraulic anchor to withdraw difficult；2, it is influenced, is made by structure
Used time, the spring compartment of hydraulic anchor with oil jacket annulus is directly exposed is connected to, sand grains, dirty grain block, wax stone that borehole fluid carries etc.
Impurity is easily accessible and is deposited in spring compartment, causes spring failure, and the slips after preventing anchoring is from withdrawing and meeting the feelings of card
Condition.
Summary of the invention
The utility model provides a kind of downhole hydraulic anchoring device, overcomes the defects of the prior art, and can have
Effect solves existing hydraulic anchor and is easily accessible and is deposited in its spring compartment there are impurity, causes spring failure, the card after anchoring
Watt nonrecoverable problem.
The technical solution of the utility model is realized by following measures: a kind of downhole hydraulic anchoring device, including
Top connection, outer cylinder, central tube, sliding sleeve, slips cover for seat, spring pushing sleeve and lower contact, the lower outside of top connection and outer cylinder it is upper
Portion's inner seal is fixedly mounted, and the upper outside of central tube and the lower inside of top connection are sealed and be fixedly mounted, under central tube
It seals and is fixedly mounted with the upper inner of lower contact on the outside of portion, the lower inside of slips cover for seat and the upper outside of lower contact seal
It is fixedly mounted；Sealing shroud is equipped with sliding sleeve between outer cylinder and central tube below top connection, is hingedly equipped in the lower end of sliding sleeve
The slips anchoring assembly that slip spider set upper outside anchoring can be slid onto, at the top of the top connection bottom and sliding sleeve between central tube
Hydraulic cavities are formed between on the inside of outside and outer cylinder, at least one pressure transmission communicated with hydraulic cavities is circumferentially provided on central tube
Hole；Spring installation cavity is formed between slips cover for seat below, central tube and lower contact in the middle part of the slips cover for seat, in spring installation cavity
Inner seat has compressed spring；Being set between on the outside of the lower inside of sliding sleeve and central tube can push away with the spring that sliding sleeve moves axially
Set, the lower end of spring pushing sleeve are protruded into spring installation cavity and are against in compressed spring.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution:
Above-mentioned slips anchoring assembly includes pin shaft locking ring and at least two slips that can radially stretch out, in sliding sleeve
The lower end edge circle spacing is provided with number U-shaped opening slot identical and downward opening with slips quantity, in U-shaped opening slot two sides
Sliding sleeve on be provided with corresponding a pair of of bearing pin mounting hole, slips pin shaft, slips are installed in corresponding bearing pin mounting hole
Upper end be hingedly mounted in U-shaped opening slot by slips pin shaft；Being fixed on the outside of the sliding sleeve on the outside of bearing pin mounting hole can be right
The pin shaft locking ring of slips pin shaft both ends limit；Slips cover for seat upper outside be provided with it is interior it is it is outer under inclined anchoring cone
Face.
Above-mentioned pin shaft locking ring is fixedly mounted on the lower end outside of sliding sleeve by holding screw.
Above-mentioned slip spider set upper inner is provided with sealing land, the slips cover for seat between sealing land and lower contact with
Spring installation cavity is formed between central tube；It is provided between on the inside of sealing land and on the outside of spring pushing sleeve and at least seals together
Circle.
The upper outside and upper inner of above-mentioned sliding sleeve are provided with an at least road sealing groove, are fixed in seal groove close
Seal；Mounting groove is provided on the inside of the sliding sleeve below seal groove, the top of spring pushing sleeve is sleeved in mounting groove, is pushed away in spring
The lower end of set is provided with the push top that base area is greater than spring pushing sleeve cross-sectional area.
The lower outside of above-mentioned top connection and the upper inner of outer cylinder are threadably secured installation, and the lower part of top connection
It is fixedly installed with fastening screw with the top of outer cylinder, the outer cylinder inside middle portion above sliding sleeve is provided with positive stop lug boss, sliding sleeve
The bottom end of top outer and positive stop lug boss offsets, and is arranged between positive stop lug boss on the outside of the top connection below top connection thread segment
There is at least one of sealing ring；Or/and the upper outside of central tube and the lower inside of top connection are threadably secured installation,
At least one is provided between the upper outside of central tube and the lower inside of top connection above top connection lower inside thread segment
Road sealing ring；Or/and the lower outside of central tube and the upper inner of lower contact are threadably secured installation, under central tube
At least sealing ring together, slips cover for seat are provided on the outside of central tube above portion's outside screw section between lower contact upper inner
Lower inside and the upper outside of lower contact be threadably secured installation, and the lower inside of slips cover for seat and lower contact
Upper outside is fixedly installed with fastening screw, on the outside of the lower contact above lower contact upper outside thread segment and under slips cover for seat
At least one of sealing ring is provided between on the inside of portion；Or/and the inside top connection above central tube is provided with upper limit ring
Platform is provided with lower limit land, the top of central tube and the bottom end phase of upper limit land on the inside of the lower contact of central tube of trailer
It supports；Or/and outer limited ring dais is provided on the outside of the lower contact below slips cover for seat, the bottom end of slips cover for seat and there is outer limit
The top of position land offsets；Or/and the top of top connection is provided with internal screw thread or external screw thread, it is arranged in the lower part of lower contact
There are internal screw thread or external screw thread.
The utility model reasonable and compact in structure, it is easy to use, compared with current conventional hydraulic anchor, by sliding sleeve,
Slips cover for seat, spring pushing sleeve and compressed spring realize the device of slips anchoring assembly and compressed spring linkage anchoring；Compared to mesh
Preceding conventional hydraulic anchor is compared, and the utility model devises the bigger spring installation cavity in space, and it is bigger to allow to installation dimension
Compressed spring can give slips anchoring assembly enough reset work then in the anchoring effect for releasing slips anchoring assembly
Firmly, slips anchoring assembly is enable to withdraw；Also, spring installation cavity is a closed cavity, avoid sand grains, dirty grain block,
The impurity such as wax stone enter spring installation cavity, enter in spring installation cavity to impurity occur after avoiding anchoring, compressed spring failure
Caused by the nonrecoverable situation of slips anchoring assembly.
Detailed description of the invention
Attached drawing 1 is the main view half section schematic of the best embodiment of the utility model.
Attached drawing 2 is main view half section schematic of the best embodiment of the utility model under anchoring work state.
Attached drawing 3 is the main view half section enlarged structure schematic diagram of sliding sleeve.
Coding in attached drawing is respectively as follows: 1 for top connection, and 2 be outer cylinder, manages centered on 3, and 4 be sliding sleeve, and 5 be slips cover for seat, and 6
It is lower contact for spring pushing sleeve, 7,8 be hydraulic cavities, and 9 be pressure transmission hole, and 10 be spring installation cavity, and 11 be compressed spring, and 12 be pin shaft
Locking ring, 13 be slips, and 14 be U-shaped opening slot, and 15 be bearing pin mounting hole, and 16 be slips pin shaft, and 17 be holding screw, and 18 be anchor
Determine the conical surface, 19 be sealing land, and 20 be sealing ring, and 21 be seal groove, and 22 be push top, and 23 be fastening screw, and 24 be positive stop lug boss,
25 be upper limit land, and 26 be lower limit land, and 27 be casing, and 28 be mounting groove.
Specific embodiment
The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions
Determine specific embodiment.
In the present invention, for ease of description, the description of the relative positional relationship of each component is according to specification
The Butut mode of attached drawing 1 is described, such as: front, rear, top, and bottom, left and right positional relationship be according to Figure of description 1
Butut direction determine.
The utility model is further described below with reference to examples and drawings:
As shown in attached drawing 1,2, which includes top connection 1, outer cylinder 2, central tube 3, sliding sleeve 4, slips
Cover for seat 5, spring pushing sleeve 6 and lower contact 7, the lower outside of top connection 1 and the upper inner of outer cylinder 2 are sealed and are fixedly mounted, center
The upper outside of pipe 3 and the lower inside of top connection 1 are sealed and are fixedly mounted, the lower outside of central tube 3 and the top of lower contact 7
Inner seal is fixedly mounted, and the lower inside of slips cover for seat 5 and the upper outside of lower contact 7 are sealed and be fixedly mounted；In top connection 1
Sealing shroud is equipped with sliding sleeve 4 between the outer cylinder 2 and central tube 3 of lower section, and slip spider can be slid by being hingedly equipped in the lower end of sliding sleeve 4
The slips anchoring assembly for covering the anchoring of 5 upper outsides, 3 outside of central tube and outer cylinder between 4 top of 1 bottom of top connection and sliding sleeve
Hydraulic cavities 8 are formed between 2 insides, at least one pressure transmission hole 9 communicated with hydraulic cavities 8 is circumferentially provided on central tube 3；In card
Spring installation cavity 10 is formed between 5 middle part of watt cover for seat slips cover for seat 5 below, central tube 3 and lower contact 7, in spring installation cavity
10 inner seats have compressed spring 11；It is set with and can be moved axially with sliding sleeve 4 between 3 outside of lower inside and central tube of sliding sleeve 4
Spring pushing sleeve 6, the lower end of spring pushing sleeve 6 is protruded into spring installation cavity 10 and is against in compressed spring 11.
When the utility model is used, pressure difference passes through central tube 3 by pressure transmission hole 9 and acts on sliding sleeve 4 in tubing string, and sliding sleeve 4 connects
Band the components such as slips anchoring assembly, spring pushing sleeve 6 along 3 slide downward of central tube and compress compressed spring 11, when sliding sleeve 4 to
After lower slider certain distance, slips anchoring assembly realizes anchoring.In tubing string after pressure differential collapses, compressed spring 11 resets, to make
Spring pushing sleeve 6, slips anchoring assembly and sliding sleeve 4 reset, and release anchoring effect.
Compared with current conventional hydraulic anchor, the utility model passes through sliding sleeve 4, slips cover for seat 5, spring pushing sleeve 6 and compression
Spring 11 realizes the device of slips anchoring assembly and the linkage anchoring of compressed spring 11；It is compared compared to current conventional hydraulic anchor,
The utility model devises the bigger spring installation cavity 10 in space, allows to the bigger compressed spring 11 of installation dimension, then exists
When releasing the anchoring effect of slips anchoring assembly, it can give slips anchoring assembly enough reset response power, make slips anchoring
Assembly can be withdrawn；Also, spring installation cavity 10 is a closed cavity, and the impurity such as sand grains, dirty grain block, wax stone is avoided to enter
Spring installation cavity 10 enters in spring installation cavity 10 to impurity occur after avoiding anchoring, and compressed spring 11 is blocked caused by failing
Watt nonrecoverable situation of anchor.
From the above mentioned it is found that the utility model has an anti-sticking advantage such as sands-proof check, antiscale card, while slips anchoring assembly
Anchoring and recycling are more reliable.
Spring pushing sleeve 6 is used to transmit the power between sliding sleeve 4 and compressed spring 11.
Above-mentioned downhole hydraulic anchoring device can be made further optimization and/or improvements according to actual needs:
As shown in attached drawing 1 to 3, slips anchoring assembly includes that pin shaft locking ring 12 and at least two can radially stretch out
Slips 13 is provided with number U-shaped opening identical and downward opening with 13 quantity of slips in the lower end edge circle spacing of sliding sleeve 4
Slot 14 is provided with corresponding a pair of of bearing pin mounting hole 15 on the sliding sleeve 4 of 14 two sides of U-shaped opening slot, pacifies in corresponding pin shaft
Slips pin shaft 16 is installed, the upper end of slips 13 is hingedly mounted in U-shaped opening slot 14 by slips pin shaft 16 in dress hole 15；?
The pin shaft locking ring 12 that can be limited to 16 both ends of slips pin shaft is fixed on the outside of the sliding sleeve 4 in 15 outside of bearing pin mounting hole；In slips
The upper outside of cover for seat 5 be provided with it is interior it is it is outer under the inclined anchoring conical surface 18.
Pin shaft locking ring 12 makes the both ends quilt for stretching out the slips pin shaft 16 of bearing pin mounting hole 15 for constraining slips pin shaft 16
It is limited in pin shaft locking ring 12, i.e. slips pin shaft 16 guarantees that slips pin shaft 16 can be by slips without departing from bearing pin mounting hole 15
The 13 more stable lower sections for being mounted on sliding sleeve 4.
As shown in attached drawing 1 to 2, pin shaft locking ring 12 is fixedly mounted on the lower end outside of sliding sleeve 4 by holding screw 17.
It is interior it is it is outer under the inclined anchoring conical surface 18 setting, convenient for the stretching and withdrawal of slips 13.
As shown in attached drawing 1 to 2,5 upper inner of slips cover for seat is provided with sealing land 19, is connect under in sealing land 19
Spring installation cavity 10 is formed between slips cover for seat 5 between first 7 and central tube 3；The impurity such as sand grains enter spring peace in order to prevent
It behave affectedly 10, at least sealing ring 20 together is provided between 19 inside of sealing land and 6 outside of spring pushing sleeve.
As shown in attached drawing 1 to 3, it is provided with an at least road sealing groove 21 in the upper outside and upper inner of sliding sleeve 4,
Sealing ring 20 is fixed in seal groove 21；Mounting groove 28 is provided on the inside of sliding sleeve 4 below seal groove 21, spring pushing sleeve 6
Top is sleeved in mounting groove 28, is provided with base area greater than 6 cross-sectional area of spring pushing sleeve in the lower end of spring pushing sleeve 6
Push top 22.
By the way that seal groove 21 is arranged on the outside of sliding sleeve 4, after the seal groove 21 installs sealing ring 20, it can guarantee that sliding sleeve 4 exists
Being slidingly sealed in sliding process.
Active force is acted on spring pushing sleeve 6 as far as possible convenient for sliding sleeve 4 in sliding process by the setting of mounting groove 28.
Push top 22 is bigger with the contact area of compressed spring 11, convenient for the transmitting of power.
As shown in attached drawing 1 to 3, the lower outside of top connection 1 and the upper inner of outer cylinder 2 are threadably secured installation, and
And the lower part of top connection 1 and the top of outer cylinder 2 are fixedly installed with fastening screw 23,2 inside middle portion of outer cylinder above sliding sleeve 4 is set
It is equipped with positive stop lug boss 24, the top outer of sliding sleeve 4 and the bottom end of positive stop lug boss 24 offset, upper below 1 thread segment of top connection
At least sealing ring 20 together are provided between the outside of connector 1 and positive stop lug boss 24；Or/and the upper outside of central tube 3 with above connect
First 1 lower inside is threadably secured installation, the upper outside of the central tube 3 above 1 lower inside thread segment of top connection
At least sealing ring 20 together are provided between the lower inside of top connection 1；Or/and lower outside and the lower contact of central tube 3
7 upper inner is threadably secured installation, 3 outside of central tube and lower contact 7 above the lower outside thread segment of central tube 3
At least one of sealing ring 20 is provided between upper inner, the lower inside of slips cover for seat 5 and the upper outside of lower contact 7 pass through
Be screwed installation, and the lower inside of slips cover for seat 5 and the upper outside of lower contact 7 are fixedly installed with fastening screw 23,
It is provided at least together between the lower inside of slips cover for seat 5 on the outside of lower contact 7 above 7 upper outside thread segment of lower contact
Sealing ring 20；Or/and be provided with upper limit land 25 on the inside of the top connection 1 above central tube 3, below the central tube 3 under
Lower limit land 26 is provided on the inside of connector 7, the top of central tube 3 and the bottom end of upper limit land 25 offset；Or/and in card
Outer limited ring dais, the bottom end of slips cover for seat 5 and the top for having outer limited ring dais are provided on the outside of the lower contact 7 of 5 lower section of watt cover for seat
End offsets；Or/and the top of top connection 1 is provided with internal screw thread or external screw thread, the lower part of lower contact 7 is provided with internal screw thread
Or external screw thread.
Top connection 1 is fixedly connected with fastening screw 23 with outer cylinder 2, and slips cover for seat 5 is fixedly connected with fastening screw with lower contact 7
23, can be further improved the two is fixedly connected with stability.
The above technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and best implementation
Effect can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
The use process of the best embodiment of the utility model: in live use process, firstly, the lower contact of the utility model
7 tubing threads (screw thread) tail band lower part tubing string and equipment, 1 tubing thread of top connection (screw thread) of the utility model are connected to upper tube
Column will be connected into the tubing string and equipment G.I.H of the utility model；Then, from ground pumping liquid, pumping liquid is in tubing string
After outer formation pressure difference, pressure difference is transferred in hydraulic cavities 8 by the pressure transmission hole 9 of central tube 3, is formed active force and is acted on sliding sleeve 4
Upper surface, the slide downward under the effect of the pressure of sliding sleeve 4 during 4 slide downward of sliding sleeve, drives 13 slide downward of slips,
During 13 slide downward of slips, after the support of the conical surface 18 is anchored by slips cover for seat 5, slips 13 is along anchoring 18 diameter of the conical surface
To stretching, the crest face of slips 13 is bonded with 27 inner wall of casing, is glided as sliding sleeve 4 continues stress, the crest and set of slips 13
The binding face stress of 27 inner wall of pipe is critical, and realizes anchoring；For sliding sleeve 4 while slide downward, push the spring pushing sleeve 6 is to moving down
It is dynamic, compressed spring 11 is compressed, after stopping pumping liquid, pressure differential collapses in tubing string, the compressed spring 11 in compressive state
Release elongation, push the spring pushing sleeve 6 moves up, and the spring pushing sleeve 6 slided upwards pushes 4 upward sliding of sliding sleeve, slips 13 with
4 upward sliding of sliding sleeve is simultaneously radially withdrawn, releases anchoring, slides as sliding sleeve 4 continues up, slips 13 is properly completed radial receipts
It returns.
Claims (9)
1. a kind of downhole hydraulic anchoring device, it is characterised in that including top connection, outer cylinder, central tube, sliding sleeve, slips cover for seat, bullet
Spring pushing sleeve and lower contact, the lower outside of top connection and the upper inner of outer cylinder are sealed and are fixedly mounted, the upper outside of central tube
It seals and is fixedly mounted with the lower inside of top connection, the fixed peace of upper inner sealing of the lower outside and lower contact of central tube
Dress, the lower inside of slips cover for seat and the upper outside of lower contact are sealed and are fixedly mounted；Outer cylinder and center below top connection
Sealing shroud is equipped with sliding sleeve between pipe, and the slips that can slide onto slip spider set upper outside anchoring is hingedly equipped in the lower end of sliding sleeve
Anchor, at the top of the top connection bottom and sliding sleeve between central tube on the outside of and outer cylinder on the inside of between form hydraulic cavities, in
At least one pressure transmission hole communicated with hydraulic cavities is circumferentially provided on heart pipe；In the middle part of the slips cover for seat slips cover for seat below, in
Spring installation cavity is formed between heart pipe and lower contact, has compressed spring in spring installation cavity inner seat；Sliding sleeve lower inside with
The spring pushing sleeve that can be moved axially with sliding sleeve is set between on the outside of central tube, the lower end of spring pushing sleeve is protruded into spring installation cavity
And it is against in compressed spring.
2. downhole hydraulic anchoring device according to claim 1, it is characterised in that slips anchoring assembly includes pin shaft locking
Ring and at least two slips that can radially stretch out, are provided with number and slips quantity phase in the lower end edge circle spacing of sliding sleeve
Same and downward opening U-shaped opening slot is provided with corresponding a pair of of pin shaft installation on the sliding sleeve of U-shaped opening slot two sides
Hole, is equipped with slips pin shaft in corresponding bearing pin mounting hole, and the upper end of slips is hingedly mounted on U-shaped opening by slips pin shaft
In slot；The pin shaft locking ring that can be limited to slips pin shaft both ends is fixed on the outside of the sliding sleeve on the outside of bearing pin mounting hole；In slips
The upper outside of cover for seat be provided with it is interior it is it is outer under the inclined anchoring conical surface.
3. downhole hydraulic anchoring device according to claim 2, it is characterised in that pin shaft locking ring is solid by holding screw
Dingan County is mounted in the lower end outside of sliding sleeve.
4. downhole hydraulic anchoring device according to claim 1 or 2 or 3, it is characterised in that slip spider set upper inner is set
It is equipped with sealing land, forms spring installation cavity between the slips cover for seat and central tube between sealing land and lower contact；Close
At least sealing ring together is provided between on the inside of seal ring platform and on the outside of spring pushing sleeve.
5. downhole hydraulic anchoring device according to claim 1 or 2 or 3, it is characterised in that the upper outside of sliding sleeve and upper
It is provided with an at least road sealing groove on the inside of portion, sealing ring is fixed in seal groove；It is set on the inside of the sliding sleeve below seal groove
It is equipped with mounting groove, the top of spring pushing sleeve is sleeved in mounting groove, is provided with base area greater than bullet in the lower end of spring pushing sleeve
The push top of spring pushing sleeve cross-sectional area.
6. downhole hydraulic anchoring device according to claim 4, it is characterised in that the upper outside and upper inner of sliding sleeve
It is provided with an at least road sealing groove, sealing ring is fixed in seal groove；Peace is provided on the inside of the sliding sleeve below seal groove
The top of tankage, spring pushing sleeve is sleeved in mounting groove, is provided with base area greater than spring pushing sleeve in the lower end of spring pushing sleeve
The push top of cross-sectional area.
7. downhole hydraulic anchoring device described according to claim 1 or 2 or 3 or 6, it is characterised in that the lower outside of top connection
It is threadably secured installation with the upper inner of outer cylinder, and the lower part of top connection and the top of outer cylinder are fixedly installed with fastening spiral shell
Nail, the outer cylinder inside middle portion above sliding sleeve are provided with positive stop lug boss, and the top outer of sliding sleeve and the bottom end of positive stop lug boss offset,
At least sealing ring together is provided between positive stop lug boss on the outside of the top connection below top connection thread segment；Or/and central tube
Upper outside and the lower inside of top connection be threadably secured installation, the center above top connection lower inside thread segment
At least sealing ring together is provided between the upper outside of pipe and the lower inside of top connection；Or/and the lower outside of central tube
It is threadably secured installation with the upper inner of lower contact, on the outside of the central tube above the lower outside thread segment of central tube under
At least one of sealing ring is provided between connector upper inner, the lower inside of slips cover for seat and the upper outside of lower contact pass through
Be screwed installation, and the lower inside of slips cover for seat and the upper outside of lower contact are fixedly installed with fastening screw, under connect
At least sealing ring together is provided between the lower inside of slips cover for seat on the outside of lower contact above head upper outside thread segment；
Or/and the inside top connection above central tube is provided with upper limit land, is provided on the inside of the lower contact of central tube of trailer
Lower limit land, the top of central tube and the bottom end of upper limit land offset；Or/and outside the lower contact below slips cover for seat
Side is provided with outer limited ring dais, and the bottom end of slips cover for seat offsets with there is the top of outer limited ring dais；Or/and in the upper of top connection
Portion is provided with internal screw thread or external screw thread, and the lower part of lower contact is provided with internal screw thread or external screw thread.
8. downhole hydraulic anchoring device according to claim 4, it is characterised in that the lower outside of top connection and outer cylinder
Upper inner is threadably secured installation, and the lower part of top connection and the top of outer cylinder are fixedly installed with fastening screw, in cunning
The outer cylinder inside middle portion of set top is provided with positive stop lug boss, and the top outer of sliding sleeve and the bottom end of positive stop lug boss offset, connect upper
At least sealing ring together is provided on the outside of top connection below head thread section between positive stop lug boss；Or/and the top of central tube
The lower inside of outside and top connection is threadably secured installation, the central tube above top connection lower inside thread segment it is upper
At least sealing ring together is provided on the outside of portion between the lower inside of top connection；Or/and the lower outside of central tube connects under
The upper inner of head is threadably secured installation, on the outside of the central tube above the lower outside thread segment of central tube and in lower contact
At least one of sealing ring is provided between on the inside of portion, the lower inside of slips cover for seat and the upper outside of lower contact are solid by screw thread
Dingan County's dress, and the lower inside of slips cover for seat and the upper outside of lower contact are fixedly installed with fastening screw, lower contact top
At least sealing ring together is provided on the outside of lower contact above outside screw section between the lower inside of slips cover for seat；Or/and
Inside top connection above central tube is provided with upper limit land, is provided with lower limit on the inside of the lower contact of central tube of trailer
Land, the top of central tube and the bottom end of upper limit land offset；Or/and it is arranged on the outside of the lower contact below slips cover for seat
There is outer limited ring dais, the bottom end of slips cover for seat offsets with there is the top of outer limited ring dais；Or/and it is arranged on the top of top connection
There are internal screw thread or external screw thread, the lower part of lower contact is provided with internal screw thread or external screw thread.
9. downhole hydraulic anchoring device according to claim 5, it is characterised in that the lower outside of top connection and outer cylinder
Upper inner is threadably secured installation, and the lower part of top connection and the top of outer cylinder are fixedly installed with fastening screw, in cunning
The outer cylinder inside middle portion of set top is provided with positive stop lug boss, and the top outer of sliding sleeve and the bottom end of positive stop lug boss offset, connect upper
At least sealing ring together is provided on the outside of top connection below head thread section between positive stop lug boss；Or/and the top of central tube
The lower inside of outside and top connection is threadably secured installation, the central tube above top connection lower inside thread segment it is upper
At least sealing ring together is provided on the outside of portion between the lower inside of top connection；Or/and the lower outside of central tube connects under
The upper inner of head is threadably secured installation, on the outside of the central tube above the lower outside thread segment of central tube and in lower contact
At least one of sealing ring is provided between on the inside of portion, the lower inside of slips cover for seat and the upper outside of lower contact are solid by screw thread
Dingan County's dress, and the lower inside of slips cover for seat and the upper outside of lower contact are fixedly installed with fastening screw, lower contact top
At least sealing ring together is provided on the outside of lower contact above outside screw section between the lower inside of slips cover for seat；Or/and
Inside top connection above central tube is provided with upper limit land, is provided with lower limit on the inside of the lower contact of central tube of trailer
Land, the top of central tube and the bottom end of upper limit land offset；Or/and it is arranged on the outside of the lower contact below slips cover for seat
There is outer limited ring dais, the bottom end of slips cover for seat offsets with there is the top of outer limited ring dais；Or/and it is arranged on the top of top connection
There are internal screw thread or external screw thread, the lower part of lower contact is provided with internal screw thread or external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712979.9U CN208380535U (en) | 2018-05-14 | 2018-05-14 | Downhole hydraulic anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712979.9U CN208380535U (en) | 2018-05-14 | 2018-05-14 | Downhole hydraulic anchoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380535U true CN208380535U (en) | 2019-01-15 |
Family
ID=64970527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820712979.9U Active CN208380535U (en) | 2018-05-14 | 2018-05-14 | Downhole hydraulic anchoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080697A (en) * | 2019-04-19 | 2019-08-02 | 新疆华油油气工程有限公司 | Tubing string unstability Balance Treatment device |
-
2018
- 2018-05-14 CN CN201820712979.9U patent/CN208380535U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080697A (en) * | 2019-04-19 | 2019-08-02 | 新疆华油油气工程有限公司 | Tubing string unstability Balance Treatment device |
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