CN104314512B - A kind of well head hanging packer - Google Patents
A kind of well head hanging packer Download PDFInfo
- Publication number
- CN104314512B CN104314512B CN201410624076.1A CN201410624076A CN104314512B CN 104314512 B CN104314512 B CN 104314512B CN 201410624076 A CN201410624076 A CN 201410624076A CN 104314512 B CN104314512 B CN 104314512B
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- China
- Prior art keywords
- glue core
- upper cover
- cover plate
- well head
- slips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003292 glue Substances 0.000 claims abstract description 65
- 241000239290 Araneae Species 0.000 claims description 29
- 238000012856 packing Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 239000011083 cement mortar Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000725 suspension Substances 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1293—Packers; Plugs with mechanical slips for hooking into the casing with means for anchoring against downward and upward movement
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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of well head hanging packer, including bottom plate, glue core, slips and upper cover plate, bottom plate, glue core, slips and upper cover plate are sequentially connected by bolt.During specific use, well head hanging packer is set on the outside of inner sleeve, tighten bolt, upper cover plate and bottom plate are extruded slips and glue core simultaneously, glue core expands, and casing annulus is insulated, slips is moved down, slip insert is embedded in inner sleeve pipe surface, prevents well head from insulating hanger and being moved upwards in the presence of annular pressure.This programme realizes that annular space is insulated by well head hanging packer, so as to efficiently solve gas blowby and annular space with pressure problem of the annular space caused by cementing quality is bad, relative in the prior art by way of rig injects cement mortar into annular space, difficulty of construction is reduced, makes whole benefit simple and reliable with regard to operation.
Description
Technical field
The present invention relates to petroleum works technical field, more particularly to a kind of well head hanging packer.
Background technology
With the extension of oil gas well mining time, because well cementation displacement efficiency is low or slurry design is unreasonable, add
Reservoir stress change, temperature change, pressure change and the passage with recovery time after well cementation, cause cement sheath packing failure,
The problems such as well head gas blowby and annular space with pressure, accordingly occurs, the safety in production of serious restriction Oil/gas Well.
Solving the well head means to save the situation more conventional with annular space problem with pressure of collaborating in the prior art is repaiied using rig
Well operations, are injected into annular space by rig or squeeze into cement come dead-end fracture, but are due to crack, the position of passage, hole
The difference of degree and permeability, cement squeeze work is possible to not close the passage of has channeling, while carrying out workover treatment using rig
Construction risk is big, easily causes personal injury, also easily equipment is caused damage or even scrapped.
Therefore, the difficulty and operating risk for solving well head gas blowby and annular space problem with pressure how are reduced, as this area skill
Art personnel technical problem urgently to be resolved hurrily.
The content of the invention
In view of this, it is with pressure to reduce solution well head gas blowby and annular space the invention provides a kind of well head hanging packer
The difficulty and operating risk of problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of well head hanging packer, including：
The bottom plate of inner sleeve pipe outer wall can be set in；
The glue core of the annular space of packing internal and external casing formation can be expanded positioned at the top of the bottom plate；
The well head hanging packer can be fixed on to the slips of the inner sleeve pipe outer wall positioned at the top of the glue core,
The slips is arranged on the top of the glue core by slip spider；
Upper cover plate positioned at the top of the slips；
The bottom plate, the glue core, the slips, the slip spider and the upper cover plate are coaxially arranged, and the bottom plate,
The glue core, the slip spider and the upper cover plate offer the corresponding bolt hole in position, and bolt is arranged in the bolt hole.
It is preferred that, in above-mentioned well head hanging packer, the bottom plate is split-type bottom plate, and the glue core is split-type glue
The side of core or the glue core opens up the weight opened up along along the joint-cutting or the glue core of its axis direction along its axis direction
Lap seam, the slips is split-type slips, and the slip spider is split-type slip spider, and the upper cover plate is split-type upper cover plate,
The bottom plate, the glue core, the slips, the slip spider and the upper cover plate are at least divided into two valves；
Also include contiguous block, the inwall of the split-type upper cover plate offers the slotted eye coordinated with the contiguous block, institute
State circumferential direction of the slotted eye along the bottom plate to open up, the split-type upper cover plate is connected by screw with the contiguous block.
It is preferred that, in above-mentioned well head hanging packer, the splicing seams of the adjacent split-type bottom plate with adjacent described point
The splicing seams of flap-type glue core are staggeredly arranged, the spelling of the splicing seams of the adjacent split-type glue core and the adjacent split-type slip spider
Seam is staggeredly arranged, and the splicing seams of the splicing seams of the adjacent split-type slip spider and the adjacent split-type upper cover plate stagger cloth
Put.
It is preferred that, in above-mentioned well head hanging packer, the thickness of the glue core is more than or equal to 5mm, the glue core
Number be one or more.
It is preferred that, in above-mentioned well head hanging packer, the number of the bolt is at least 2.
It is preferred that, in above-mentioned well head hanging packer, the slips is the slips by heat treatment.
It can be seen from the above technical proposal that the well head hanging packer that provides of the present invention, including bottom plate, glue core, slips,
Slip spider and upper cover plate, bottom plate, glue core, slips, slip spider and upper cover plate are sequentially connected by bolt.Specifically using process
In, well head hanging packer is set on the outside of inner sleeve, bolt is tightened, upper cover plate and bottom plate are carried out to slips and glue core simultaneously
Extruding, glue core expansion, is insulated, slips is moved down to casing annulus, slip insert insertion inner sleeve pipe surface, prevents that well head packing is outstanding
Hanging device is moved upwards in the presence of annular pressure.This programme realizes that annular space is insulated by well head hanging packer, so that effectively
Gas blowby and annular space with pressure problem of the annular space caused by cementing quality is bad is solved, relative in the prior art by rig to ring
The mode of injection cement mortar, reduces difficulty of construction in empty, makes whole benefit simple and reliable with regard to operation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the front view of well head hanging packer provided in an embodiment of the present invention；
Fig. 2 is the top view that well head hanging packer provided in an embodiment of the present invention coordinates with inner sleeve.
1st, bottom plate, 2, glue core, 3, slips, 4, upper cover plate, 5, contiguous block, 6, slip spider.
Embodiment
The invention discloses a kind of well head hanging packer, to reduce the difficulty for solving well head gas blowby and annular space problem with pressure
And operating risk.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 and Fig. 2 are referred to, Fig. 1 is the front view of well head hanging packer provided in an embodiment of the present invention；Fig. 2 is this
The top view that the well head hanging packer that inventive embodiments are provided coordinates with inner sleeve.
A kind of well head hanging packer, including：The bottom plate 1 of inner sleeve pipe outer wall can be set in；Can on bottom plate 1
The glue core 2 of the annular space of enough expansion packing internal and external casing formation；Well head hanging packer can be fixed on positioned at the top of glue core 2
The slips 3 of inner sleeve pipe outer wall, slips 3 is arranged on the top of glue core 2 by slip spider 6；Upper cover plate 4 positioned at the top of slips 3；
Bottom plate 1, glue core 2, slips 3, slip spider 6 and upper cover plate 4 are coaxially arranged, and bottom plate 1, glue core 2, slip spider 6 and upper cover plate 4 are opened up
There is the corresponding bolt hole in position, bolt is arranged in bolt hole.
The well head hanging packer that this programme is provided, by tightening bolt, the distance between upper cover plate 4 and bottom plate 1 shorten,
Upper cover plate 4 and bottom plate 1 are extruded glue core 2 and slips 3 simultaneously, and glue core 2 is expanded, and annular space is insulated, and slips 3 is moved down,
Slip insert is embedded in inner sleeve pipe surface, well head hanging packer is fixed on well head, prevents well head hanging packer in annular pressure
In the presence of move upwards.The device that this programme is provided, is insulated by glue core 2 to annular space, and slips 3 realizes well head suspension envelope
Realized every the packing and fixation of the fixation of device, and well head hanging packer by tightening bolt compresses glue core and slips, operation letter
Folk prescription just, and need not use large operation equipment, relative to injecting cement mortar into annular space by rig in the prior art
Mode, reduces the difficulty and operating risk for solving well head gas blowby and annular space problem with pressure.
Glue core 2 and slips 3 are set in the middle of bottom plate 1 and upper cover plate 4, slips is fixed on the upper strata of glue core 2 by slip spider 6,
During bolt is tightened, upper cover plate 4 is directly extruded slips 3, and slips 3 is moved down, and well head hanging packer is fixed
In the outer wall of inner sleeve, while glue core 2 expands under the squeezing action of slips 3 and bottom plate 1, the annular space of internal and external casing formation is entered
Row packing, is prevented effectively from annular pressure and well head gas blowby.
The packing and fixation for the well head hanging packer that this programme is provided pass through the realization of tightening to bolt, side simple to operate
Just, the risk of operation need not be reduced using extraneous large scale equipment during installation in addition, at the same install, dismounting and
Maintenance is all very convenient, and solution well head gas blowby and annular space hand labor intensity with pressure are also reduced to a certain extent.
In order to further optimize above-mentioned technical proposal, in the specific embodiment of the present invention, bottom plate 1 is split-type bottom
Plate, glue core 2 is opened up for the side of split-type glue core or glue core 2 and opened up along along the joint-cutting or glue core 2 of its axis direction along it
The overlapping joint-cutting of axis direction, slips 3 is split-type slips, and slip spider 6 is split-type slip spider, and upper cover plate 4 is on split-type
Cover plate, bottom plate 1, glue core 2, slip spider 6, slips 3 and upper cover plate 4 are at least divided into two valves, and the various pieces in the present apparatus are equal
It is arranged to split-type structure, the assembling of well head hanging packer can be facilitated, field operation is preferably adapted to.
Also include contiguous block 5, the inwall of split-type upper cover plate offers the slotted eye coordinated with contiguous block 5, a slotted eye edge point valve
The circumferential direction of formula upper cover plate is opened up, and split-type upper cover plate is connected by screw with contiguous block 5.
Bottom plate 1, glue core 2, slips 3 and upper cover plate 4 are bolted into a string, in order to ensure the globality of device, are carried
Contiguous block 5, contiguous block 5 and split-type are provided between the stability that high split-type structure is used, adjacent split-type upper cover plate
Upper cover plate is connected by screw.
Well head hanging packer only includes bottom plate 1, glue core 2, slips 3, slip spider 6, upper cover plate 4 and contiguous block 5, device
Simple in construction, production cost is low.
In order to further optimize above-mentioned technical proposal, in the specific embodiment of the present invention, adjacent split-type bottom plate
The splicing seams of splicing seams and adjacent split-type glue core are staggeredly arranged, the splicing seams of adjacent split-type glue core and adjacent split-type slips
The splicing seams of seat are staggeredly arranged, and the splicing seams of the splicing seams of adjacent split-type slip spider and adjacent split-type upper cover plate stagger cloth
Put so that well head hanging packer it is reliable and stable, and in use, do not influence each other.Certain split-type bottom
Plate, split-type glue core, split-type slip spider, split-type slips, split-type upper cover plate splicing seams can also be combined arrangement.
In order to ensure the packing effect and service life of glue core 2, the thickness of glue core 2 is more than or equal to 5mm, and glue core 2
Number be one or more.
In order to ensure the stability after bottom plate 1, glue core 2, slip spider 6 and the combination of upper cover plate 4, the number of bolt is at least 2
It is individual, and be evenly arranged on the circumference of upper cover plate 4.
In order to further optimize above-mentioned technical proposal, in the specific embodiment of the present invention, slips 3 is by heat treatment
Slips, it is hard outside the slip insert through Overheating Treatment in it is tough, service life extends and ensure that to be effectively embedded under load effect
Inner sleeve pipe surface, prevents well head hanging packer from moving under the influence of air pressure.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (5)
1. a kind of well head hanging packer, it is characterised in that including：
The bottom plate (1) of inner sleeve pipe outer wall can be set in；
The glue core (2) of packing internal and external casing formation annular space can be expanded positioned at the top of the bottom plate (1)；
The well head hanging packer can be fixed on to the slips of the inner sleeve pipe outer wall positioned at the top of the glue core (2)
(3), the slips (3) is arranged on the top of the glue core (2) by slip spider (6)；
Upper cover plate (4) positioned at the top of the slips (3)；
The bottom plate (1), the glue core (2), the slips (3), the slip spider (6) and the upper cover plate (4) are coaxially arranged,
And the bottom plate (1), the glue core (2), the slip spider (6) and the upper cover plate (4) offer the corresponding bolt hole in position,
Bolt is arranged in the bolt hole；
Tighten the bolt, the distance between the upper cover plate (4) and the bottom plate (1) are shortened, the upper cover plate (4) and described
Bottom plate (1) is while extrude the glue core (2) and the slips (3), and glue core (2) expansion is insulated to annular space,
The slips (3) moves down, slip insert insertion inner sleeve pipe surface, well head hanging packer is fixed on well head.
2. well head hanging packer according to claim 1, it is characterised in that the bottom plate (1) is split-type bottom plate, institute
The side that glue core (2) is stated for split-type glue core or the glue core (2) is opened up along its axis direction joint-cutting or the glue core (2)
On open up overlapping joint-cutting along its axis direction, the slips (3) is split-type slips, and the slip spider (6) is split-type card
Watt seat, the upper cover plate (4) is split-type upper cover plate, the bottom plate (1), the glue core (2), the slip spider (6), the card
Watt (3) and the upper cover plate (4) are at least divided into two valves；
Also include offering the slotted eye coordinated with the contiguous block (5) on contiguous block (5), the inwall of the split-type upper cover plate,
Circumferential direction of the slotted eye along the split-type upper cover plate is opened up, and the split-type upper cover plate passes through with the contiguous block (5)
Mode connects for screw.
3. well head hanging packer according to claim 2, it is characterised in that the splicing seams of the adjacent split-type bottom plate
It is staggeredly arranged with the splicing seams of the adjacent split-type glue core, the splicing seams of the adjacent split-type glue core and adjacent described point of valve
The splicing seams of formula slip spider are staggeredly arranged, the splicing seams of the adjacent split-type slip spider and the adjacent split-type upper cover plate
Splicing seams are staggeredly arranged.
4. well head hanging packer according to claim 1, it is characterised in that the thickness of the glue core (2) be more than or
Number equal to 5mm, and the glue core (2) is one or more.
5. well head hanging packer according to claim 1, it is characterised in that the number of the bolt is at least 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410624076.1A CN104314512B (en) | 2014-11-07 | 2014-11-07 | A kind of well head hanging packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410624076.1A CN104314512B (en) | 2014-11-07 | 2014-11-07 | A kind of well head hanging packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104314512A CN104314512A (en) | 2015-01-28 |
| CN104314512B true CN104314512B (en) | 2017-08-18 |
Family
ID=52369808
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410624076.1A Active CN104314512B (en) | 2014-11-07 | 2014-11-07 | A kind of well head hanging packer |
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| Country | Link |
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| CN (1) | CN104314512B (en) |
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| CN104314512A (en) | 2015-01-28 |
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