CN104453757B - Thick oil steam flooding and deblocking two-way anchoring tubing anchor - Google Patents
Thick oil steam flooding and deblocking two-way anchoring tubing anchor Download PDFInfo
- Publication number
- CN104453757B CN104453757B CN201410654948.9A CN201410654948A CN104453757B CN 104453757 B CN104453757 B CN 104453757B CN 201410654948 A CN201410654948 A CN 201410654948A CN 104453757 B CN104453757 B CN 104453757B
- Authority
- CN
- China
- Prior art keywords
- tube
- lock ring
- slips
- cone
- central tube
- 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.)
- Active
Links
- 238000010795 Steam Flooding Methods 0.000 title claims abstract description 29
- 238000004873 anchoring Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009191 jumping Effects 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
- 239000003129 oil well Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating 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
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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)
- Earth Drilling (AREA)
Abstract
The invention provides a thickened oil steam drive deblocking two-way anchoring oil pipe anchor which comprises slips, a central pipe, a lower cone, a liquid cylinder barrel and a fixed piston, wherein the slips are sleeved outside the upper end of the central pipe; the fixed piston is fixedly sleeved in the middle of the central tube, the liquid cylinder barrel is slidably sleeved outside the fixed piston, the upper end of the liquid cylinder barrel is fixedly connected with the lower end of the lower cone in a sealing manner, the central tube, the lower cone, the liquid cylinder barrel and the fixed piston surround to form a hydraulic cavity, and the central tube is provided with a through hole at a position corresponding to the hydraulic cavity; the lower end of the fixed piston is connected with an elastic piece, a connector sleeved outside the central tube in a sliding manner is arranged below the elastic piece, the upper end of the connector is fixedly connected with the lower end of the hydraulic cylinder barrel, and the elastic piece can be compressed by the connector. The invention has the advantages of firm setting and reliable unsealing performance.
Description
Technical field
The present invention relates to oil-gas field development heavy crude heat extraction anchoring device, particularly a kind of thick oil steam drive deblocking bidirectionally anchoring
Tubing anchor.
Background technology
The tubing anchor of oil-gas field development is all to be applied to thin oil mining tubular column at present, and thin oil exploitation is used for tubing anchor
Oil well pump flow string, grappling oil pipe prevent tubing string from extending, and increase pump efficiency.For the thermal recovery work such as thick oil steam drive, steam soak
Skill, heavy crude heat extraction technique are typically due to poor underground working, well temperature height and long the production cycle, can cause tubing string frequency in production adjustment
It is numerous to wriggle up and down, therefore the tubing anchor of thin oil production cannot meet the requirement of heavy crude heat extraction technique at all.Liaohe Oil Field tradition
It is that this packer can be with using band slip-type thermal packer that steam drive process pipe string to be used to prevent the instrument of string creep
String creep is effectively prevented, lift pipe string packer is difficult deblocking after protecting upper strata sleeve pipe, but long-term steam injection, have often Ka Jing existing
As occurring, difficulty is brought to construction, increase cost, reduce production efficiency.
The content of the invention
In order to overcome prior art to prevent the packer of string creep to be difficult the problem for unsealing, the present invention provides a kind of viscous crude
Steam drives deblocking bidirectionally anchoring tubing anchor, and it is firm to set, and tubing anchor can be unsealed using triple solution sealing mechanisms, possesses
Reliable solution sealing property.
The technical solution adopted for the present invention to solve the technical problems is：The thick oil steam drive unseals bidirectionally anchoring oil pipe
Anchor includes slips, central tube, lower cone, liquid cylinder and fixed piston, and slip sleeve outside the upper end of central tube, slide by lower cone
It is dynamic to be sheathed on that central tube is outer and the top contact slips of lower cone, slips can with lower cone along the axial direction of central tube it is up or
It is descending and realize grappling or deblocking；Fixed piston fixed cover is located at the middle part of central tube, and liquid cylinder slip cap is located at fixed work
Beyond the Great Wall, the upper end of liquid cylinder is sealedly and fixedly connected with the lower end of lower cone, and central tube, lower cone, liquid cylinder and fixed piston are closed
Enclose to form hydraulic cavities, central tube is provided with through hole in the position of the correspondence hydraulic cavities；The lower end connection of fixed piston is flexible
Part, is provided with connector of the slip cap outside central tube, under the upper end of connector and liquid cylinder below the elastic component
End is fixedly connected, and the elastic component can be compressed as connector is up along central tube.
Central tube upper end is connected with upper cone by external screw thread, and the bottom of upper cone is provided with radius and from top to bottom gradually decreases
The first male cone (strobilus masculinus)；The top of lower cone is provided with the second male cone (strobilus masculinus) that radius from top to bottom gradually increases；The top of slips is provided with
With the first inner conical surface of the mating shapes of first male cone (strobilus masculinus), the bottom of slips is provided with the shape with second male cone (strobilus masculinus)
The second inner conical surface for matching.
Outside wall surface in the middle part of slips is provided with groove, and sheath is arranged with outside slips, and the upper and lower of sheath is respectively equipped with
Through hole and lower through-hole, the top of slips and the bottom of slips can be corresponded to through the upper through hole and the lower through-hole；Under sheath
End is fixedly connected with lower cone.
Semielliptic spring is provided with groove；When the top and the bottom of slips pass sheath, semielliptic spring energy
Compressed by groove and sheath.
Sleeve cap is provided between the lower end of sheath and lower cone, sleeve cap is threadedly coupled with sheath, sleeve cap and lower cone
Body is slidably connected.
The elastic component be spring, the bottom of the upper end contact fixed piston of spring, the lower end contact connector of spring.
The lower end of central tube is from inside to outside arranged with lower center tube, locking tube and lock sleeve, central tube, lower center tube successively
Can be fixedly connected with locking tube, the upper end of lock sleeve is fixedly connected with the lower end of connector, between lock sleeve and locking tube also
The lock ring set that lock sleeve and locking tube can be made to be connected is provided with, to set split ring jaggy, it is interior that lock ring covers lock ring set
Surface is provided with internal thread, and the outer surface of lock ring set is provided with external screw thread.
The lower end of lower center tube connects locking tube by unsealing pin, and after deblocking pin is cut off, locking tube being capable of phase
For lower center tube slides.
Through hole is provided with the side wall of lower center tube, jump closing piece in the through hole, is provided with；On the outer wall of central tube
The external groove of energy embedded part jump closing piece is provided with, the indent of energy embedded part jump closing piece on the inwall of locking tube, is provided with
Groove, jump closing piece can be arranged in the external groove and the through hole or in the inner groovy and the through hole.
The bottom surface of jump closing piece is inclined-plane, and the inclined-plane is to downward-sloping from inside to outside along center pipe axle；When jump lock
When block is located in the external groove and the through hole, relative can slide between lower center tube and locking tube, when jump closing piece
When in the inner groovy and the through hole, relative can slide between central tube and lower center tube.
The bottom surface on the inclined-plane, the bottom surface of the external groove and the inner groovy is parallel to each other.
Lock ring covers and is also arranged with lock ring and locking tube between, and the inner surface of lock ring is connected with the outer surface thread of locking tube,
The inner surface that the outer surface of lock ring is covered with lock ring is threadedly coupled, the inner surface screw thread of the lower end of the outer surface and lock sleeve of lock ring set
Connection, the external screw thread of lock ring is coarse thread, and the internal thread of lock ring is fine thread, and the externally threaded pitch of lock ring is more than lock ring
The pitch of the internal thread of set, the lower end of lock sleeve are threaded with lower connector, and the lower end of lower connector is fixedly connected with and sets
Ring, is provided with step in the middle part of lower center tube, when lower center tube relative to set ring it is descending when, the middle part for setting ring can stop institute
State step.
The internal thread of the external screw thread of locking tube, the internal thread of lock ring, the external screw thread of lock ring and lock ring set is saw-tooth thread.
Screw thread is gone back outside lower center tube and is arranged with retaining ring, the lower end for setting ring is connected with retaining ring by setting pin.
The beneficial effect of the thick oil steam drive deblocking bidirectionally anchoring tubing anchor of the present invention is to set simple structure, action spirit
Living, grappling reliability can be effectively reduced as steam flooding well well temperature changes and produce the impact that string creep is caused, meet and steam
Vapour drives thermal recovery technology and requires, and has triple deblocking modes, can complete reliable deblocking action under the conditions of severe hole condition,
Possesses higher construction success rate.
Description of the drawings
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation that the thick oil steam drive of the present invention unseals bidirectionally anchoring tubing anchor；
Fig. 2 is the structural representation of the lock ring set of the present invention；
Fig. 3 is the structural representation of the lock ring of the present invention.
Description of reference numerals：
1. upper cone, 2. sheath, 201. retainer rings, 3. slips, 301. grooves, 4. central tube, 5. semielliptic spring, 6. lower to bore
Body, 7. sleeve cap, 8. liquid cylinder, 9. fixed piston, 10. spring, 11. connectors, 12. lock sleeves, 13. locking tubes, in 14. times
Heart pipe, 15. jump closing pieces, 16. lock ring sets, 17. lock rings, 18. times connectors, 19. deblocking pins, 20. set ring, and 21. set
Pin, 22. retaining rings.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now control illustrates this
Bright specific embodiment.
As shown in Figure 1 to Figure 3, the present invention proposes a kind of thick oil steam drive deblocking bidirectionally anchoring tubing anchor, including slips
3rd, central tube 4, lower cone 6, liquid cylinder 8 and fixed piston 9, slips 3 are sheathed on outside the upper end of central tube 4, and lower cone 6 slides
It is sheathed on that central tube 4 is outer and the top contact slips 3 of lower cone 6, slips 3 can be as lower cone 6 be along in the axial direction of central tube 4
It is capable or descending and realize grappling or deblocking；9 fixed cover of fixed piston is located at located at the middle part of central tube 4, and 8 slip cap of liquid cylinder
Outside fixed piston 9, upper end and the lower end of lower cone 6 of liquid cylinder 8 are sealedly and fixedly connected, central tube 4, lower cone 6, liquid cylinder 8
Surround to form hydraulic cavities with fixed piston 9, central tube 4 is provided with through hole in the position of the correspondence hydraulic cavities；Fixed piston 9
Lower end is connected with elastic component, and connector 11 of the slip cap outside central tube 4, connector 11 are provided with below the elastic component
Upper end be fixedly connected with the lower end of liquid cylinder 8, the elastic component can be pressed as connector 11 is up along central tube 4
Contracting.
The thick oil steam drive deblocking bidirectionally anchoring tubing anchor simple structure of the present invention, sets club envelope by auxiliary when setting
Stifled bottom oil pipe inner chamber, you can realization is suppressed and set, above carries central tube 4 and is capable of achieving deblocking, flexible movements.During setting,
Liquid enters the hydraulic cavities by the through hole on central tube 4, and lower cone 6 is in the presence of hydraulic pressure along 4 axle of central tube
Grappling is opened to up push card watt 3 is radially outward, the tubing anchor of the present invention completes to set.At the same time, 6 band of lower cone
Along central tube 4 axially upwards, the compression of connector 11 is arranged at fixed piston 9 and connector 11 for hydrodynamic cylinder pressure 8, connector 11
Between the elastic component.When above carry central tube 4 disanchor slips 3 when, fixed piston 9 is up with central tube 4, the elastic component
Elastic force assist fixed piston 9 it is up, lower cone 6 is descending relative to central tube 4, and slips 3 is disanchored therewith.
The hydraulic cavities are by the outside wall surface of central tube 4, the bottom surface of lower cone 6, the internal face of liquid cylinder 8 and fixed piston 9
Top surface surround to be formed, in order to simplify the present invention tubing anchor structure, be set in inner small and outside big in the bottom surface of lower cone 6
The conical surface, the inner conical surface form hydraulic cavities of the vertical section for triangle with central tube 4, fixed piston 9.The bottom surface of lower cone 6
The shape of hydraulic cavities can be formed with other.
Grappling and the dependence to lower cone of disanchoring in view of slips 3, it is preferred to use the design of cone structure, so that card
Watts 3 are easy to set and unseal.Upper cone 1 is connected by external screw thread in the upper end of central tube 4, the bottom of upper cone 1 is provided with radius
The first male cone (strobilus masculinus) for from top to bottom gradually decreasing；The top of lower cone 6 is provided with the second outer cone that radius from top to bottom gradually increases
Face；The top of slips 3 is provided with the first inner conical surface with the mating shapes of first male cone (strobilus masculinus), the bottom of slips 3 be provided with
Second inner conical surface of the mating shapes of second male cone (strobilus masculinus).When the contact slips 3 upwards of the lower cone 6, lower cone 6
Second male cone (strobilus masculinus) is engaged with the second inner conical surface of slips 3, enables slips 3 relatively easily up by 6 contact of lower cone；With this
Meanwhile, the first inner conical surface of slips 3 is engaged with the second male cone (strobilus masculinus) of upper cone 1, and slips 3 is up to climb up the second of upper cone 1
Male cone (strobilus masculinus), slips 3 complete grappling along radially against to casing wall.
During lower cone 6 promotes slips 3 radially outward to open, the restriction of a radial direction is set up, is beneficial to slips 3
Axial movement, the outside wall surface in the middle part of the slips 3 arranges groove 301, is arranged with sheath 2 outside slips 3, the top of sheath 2 and under
Portion is respectively equipped with through hole and lower through-hole, and sheath 2 is formed between through hole and the lower through-hole corresponding to groove 301 on described
Retainer ring 201, the top of slips 3 and the bottom of slips 3 can be corresponded to through the upper through hole and the lower through-hole；Under sheath 2
End is fixedly connected with lower cone 6.During slips 3 is radially expanded, the top of slips 3 and the bottom of slips 3 can only correspond to
Described upper through hole and the lower through-hole through sheath 2 carries out grappling, and the design of sheath 2 not only provides a footpath to slips 3
To restraint, can more reduce the abrasion of slips 3, extend the service life of slips 3.
In order to the radial direction for assisting slips 3 is return, semielliptic spring 5 is provided with groove 301；When the top of slips 3
When passing sheath 2 with the bottom, semielliptic spring 5 can be compressed by groove 301 and sheath 2.Semielliptic spring 5 after compression can be promoted
Along 4 radial inward movement of central tube, during slips 3 shrinks, semielliptic spring 5 can help slips 3 from sheath 2 to slips 3
Radially-inwardly return.
In addition, being additionally provided with to protect the sleeve cap 7 of sheath 2, sleeve cap 7 between the lower end of sheath 2 and lower cone 6
It is threadedly coupled with sheath 2, sleeve cap 7 is slidably connected with lower cone 6.
In a specific embodiment, the elastic component is spring 10, the upper end contact fixed piston 9 of spring 10
Bottom, the lower end contact connector 11 of spring 10.
Hydraulic pressure is laid down after 3 grappling of slips, in order to ensure, after hydraulic pressure is laid down, 8 grade part of hydraulic cylinder will not be in gravity
The axial direction whereabouts of effect lower edge central tube 4, is from inside to outside arranged lower center tube 14, locking tube 13 successively in the lower end of central tube 4
With lock sleeve 12, central tube 4, lower center tube 14 can be fixedly connected with locking tube 13, upper end and the connector 11 of lock sleeve 12
Lower end be fixedly connected, being additionally provided between lock sleeve 12 and locking tube 13 to make what lock sleeve 12 and locking tube 13 were connected
Lock ring set 16, to set split ring jaggy, the inner surface of lock ring set 16 is provided with internal thread, the appearance of lock ring set 16 to lock ring set 16
Face is provided with external screw thread.When hydraulic pressure enters the hydraulic cylinder, lower cone 6 can drive connector 11, lock ring set 12 up, due to lock
The open ring structure of ring set 16, locking tube 13 can strut lock ring set 16,3 smooth grappling of slips；After hydraulic pressure is laid down, locking tube 13
16 can be covered by internal thread and the lock ring of lock ring set 16 engage, tubing anchor of the invention is locked, 8 grade part of hydraulic cylinder will not under
Fall.
The tubing anchor of the present invention of lock ring set 16 has been used, in deblocking, larger deblocking power has been needed.In order to ensure deblocking
When be supplied to the deblocking power of slips 3 to be enough to open the grappling of slips 3, the lower end of lower center tube 14 by unseal pin 19 connect
Locking tube 13, after deblocking pin 19 is cut off, locking tube 13 can slide relative to lower center tube 14.When needing deblocking, on
Carrying central tube 4 drives lower center tube 14 up, and deblocking pin 19 is cut off, and locking tube 13 and is fixedly connected with locking tube 13
Lock ring set 16, lock sleeve 12, connector 11, the gravity of hydraulic cylinder 8, are unsealed again to the offer slips 3 of lower cone 6 is disanchored first
Power.
The external screw thread that can be spirally connected with tubing string is set in the lower end of lower center tube 14, tubing string is connected on lower center tube 14.
In order to become the deblocking power of the deblocking of slips 3, in one preferred embodiment, the side of lower center tube 14 using the weight of tubing string
Through hole is provided with wall, jump closing piece 15 in the through hole, is provided with；Being provided with the outer wall of central tube 4 can embedded part jump
The external groove of jump closing piece 15, the lower end of lower center tube 14 is provided with the external screw thread that can be spirally connected with tubing string, is set on the inwall of locking tube 13
The inner groovy of energy embedded part jump closing piece 15 is equipped with, jump closing piece 15 can be arranged in the external groove and the through hole
Or in the inner groovy and the through hole.When the closing piece 15 that jumps is arranged in the external groove and the through hole, center
Pipe 4 is fixedly connected with lower center tube 14 by the closing piece 15 that jumps, and what lower center tube 14 can be with central tube 4 is up and up；Jump
When jump closing piece 15 is arranged in the through hole and the inner groovy, locking tube 13 can be by closing piece 15 and the lower center tube 14 of jumping
It is fixedly connected, the tubing string being spirally connected with lower center tube 14 is fixedly connected with connector 11 by lower center tube 14 and locking tube 13, shape
Into the deblocking of slips 3 second unseals power again, enables slips 3 to be easier to be unsealed, and realizes the unblock of the tubing anchor of the present invention.
In order that jump closing piece 15 successfully can be slid to the inner groovy of locking tube 13, jump from the external groove of central tube 4
The bottom surface of closing piece 15 is set to inclined-plane, and the inclined-plane is axially downward-sloping from inside to outside along central tube 4；When jump closing piece 15
When in the external groove and the through hole, relative can slide between lower center tube 14 and locking tube 13, when jump closing piece
15 when being located in the inner groovy and the through hole, relative can slide between central tube 4 and lower center tube 14.Instantly center
Pipe 14 can be up and axially up with the axial direction of central tube 4, and due to the effect of gravity, jump closing piece 15 can be from described outer recessed
Slide to the through hole and the inner groovy in groove and the through hole.Further, the inclined-plane, the external groove
The bottom surface of bottom surface and the inner groovy is parallel to each other, lower center tube 14 can with the axial direction of central tube 4 go upward to a certain position when,
The inclined-plane, the bottom surface of the inner groovy, the bottom surface of the external groove can be generally aligned in the same plane.
Lock ring 17 is also arranged between lock ring set 16 and locking tube 13, makes the inner surface of lock ring 17 outer with locking tube 13
Thread surface connects, and the outer surface of lock ring 17 is threadedly coupled with the inner surface of lock ring set 16, outer surface and the locking of lock ring set 16
The inner surface threaded connection of the lower end of set 12, meanwhile, the external screw thread of lock ring 17 is coarse thread, and the internal thread of lock ring 17 is closely-pitched
Screw thread, the externally threaded pitch of lock ring 17 cover the pitch of 16 internal thread more than lock ring, and the lower end of lock sleeve 12 is threaded with
Lower connector 18, the lower end of lower connector 18 are fixedly connected with and set ring 20, and the middle part of lower center tube 14 is provided with step, instantly
Central tube 14 relative to set ring 20 it is descending when, the middle part for setting ring 20 can stop the step.During setting, lock ring 17
External screw thread replace the external screw thread of aforementioned middle locking tube 13, strut lock ring set 16, enable 3 smooth grappling of slips, it is of the invention
Tubing anchor sets.During deblocking, central tube 4 drives lower center tube 14 up until jump closing piece 15 slides to described and runs through
In hole and the inner groovy, lower center tube 14 is fixedly connected with locking tube 13 by the closing piece 15 that jumps, the drive lock ring of locking tube 13
17 is up relative to lock ring set 16, as lock ring 17 and lock ring cover the pitch of 16 screw threads for engaging more than lock ring 17 and locking tube 13
The pitch of the screw thread of engagement, when load is unsealed within the specific limits, lock ring 17 cannot strut lock ring set 16, and lower center tube 14 is still
So it is fixedly connected with connector 11.If during deblocking, deblocking load is excessive, and engaging between lock ring 17 and lock ring set 16 is de-
From when, the lower end tubing string of the tubing anchor of the present invention can be with lower center tube 14, locking tube 13 and lock ring 17 simultaneously under central tube 4
OK, the step of central tube 14 can be subject to set the stop of ring 20 and clash into and set ring 20, and impact and set what ring 20 was connected
The parts such as liquid cylinder 8, lower cone 6, form triple deblocking power.
The internal thread of the external screw thread of locking tube 13, the internal thread of lock ring 17, the external screw thread of lock ring 17 and lock ring set 16 is preferred
Be set to saw-tooth thread, be conducive to lock ring set 16 relative to lock ring 17 it is up when, lock ring 17 smoothly can strut lock ring set 16, with
And lock ring set 16, when stopping up, lock ring 17 and lock ring set 16 engages locking, while being also beneficial to lock ring 17 and locking tube 13
Locking engagement.
Screw thread is gone back outside lower center tube 14 and is arranged with retaining ring 22, the lower end of ring 20 is set by setting pin 21 and retaining ring 22
It is connected.
Alloy plating is taken in the surface of all moving components of the thick oil steam drive deblocking bidirectionally anchoring tubing anchor of the present invention
Technological measure, to avoid long-term steam injection from causing downhole tool easily to produce the problems such as oxidation and rusting and fouling.
The thick oil steam drive that the present invention is exemplified below unseals the course of work of bidirectionally anchoring tubing anchor.
When setting, highly pressurised liquid is injected in central tube 4, liquid enters the liquid by the through hole on central tube 4
Pressure chamber, lower cone 6 are axially up along central tube 4 in the presence of hydraulic pressure, push up that slips 3 is radially outward to be opened,
Under the restriction of sheath 2, slips 3 climbs up the conical surface of upper cone 1, radially to casing wall, realizes the grappling of slips 3,
During this, lower cone 6 drives hydraulic cylinder 8, connector 11, lock sleeve 12, lower connector 18, to set ring 20 up, cuts off seat
Offset nail 21, lock sleeve 12 drive lock ring set 16 up, and lock ring 17 produces relative displacement, the tubing anchor of the present invention with locking tube 13
It is locked.
During deblocking, above carry oil pipe, oil pipe drives upper cone 1, central tube 4 up, due to the effect of the closing piece 15 that jumps, it is lower in
Stress, slips 3 and the sleeve pipe grappling upwards together of heart pipe 14, can produce downward reaction force, promote lower cone 6 and be connected other
Part is cut off by down force, deblocking pin 19, and at this moment spring 10 is laid in elasticity and can be discharged, and promotes 11 grade part of connector
To lower stress, lower cone 6 can be extracted from slips 3, if this mechanism is failed due to long-time down-hole steam injection, or normal work
Make, in continuation, put on cone 1 and central tube 4, lower center tube 14 can produce relative displacement with locking tube 13, and jump closing piece 15 is under
The weight of the tubing string connected by central tube 14 is applied on locking tube 13 and the part such as coupled, on lower side tubing string weight reality
Existing double deblocking, if deblocking load is very big, lock ring 17 is disengaged with lock ring set 16, and tubing anchor lower end tubing string can be with lower center
Pipe 14, locking tube 13, lock ring 17 are moved downward, and the step of lower center tube 14 clashes into and sets ring 20, impacts the fluid cylinder being attached thereto
8th, the part such as lower cone 6, realizes triple deblockings.
From the foregoing, the tubing anchor of the present invention and is set by arranging lock ring set 16 and lock ring 17 makes to set very firm
Put triple solution sealing mechanisms to unseal tubing anchor, possess reliable solution sealing property.
Schematically specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, the equivalent variations made on the premise of the design without departing from the present invention and principle and modification, all should
Belong to the scope of protection of the invention.And it should be noted that each part of the present invention be not limited in above-mentioned entirety should
With each technical characteristic described in the specification of the present invention can select one individually to adopt or select multinomial according to actual needs
Combine use, therefore, the present invention naturally covers other combinations relevant with this case innovative point and concrete application.
Claims (13)
1. a kind of thick oil steam drive unseals bidirectionally anchoring tubing anchor, it is characterised in that the thick oil steam drive unseals bidirectionally anchoring
Tubing anchor includes slips (3), central tube (4), lower cone (6), liquid cylinder (8) and fixed piston (9), during slips (3) is sheathed on
Outside the upper end of heart pipe (4), lower cone (6) slip cap is located at central tube (4) outward and top contact slips (3) of lower cone (6),
Slips (3) can realize grappling or deblocking along the axial upstream or downstream of central tube (4) with lower cone (6)；Fixed piston
(9) fixed cover located at central tube (4) middle part, and liquid cylinder (8) slip cap located at fixed piston (9) outward, liquid cylinder (8) it is upper
The lower end with lower cone (6) is held to be sealedly and fixedly connected, central tube (4), lower cone (6), liquid cylinder (8) and fixed piston (9) are closed
Enclose to form hydraulic cavities, central tube (4) is provided with through hole in the position of the correspondence hydraulic cavities；The lower end connection of fixed piston (9)
Flexible part, is provided with slip cap located at central tube (4) connector (11) outward below the elastic component, connector (11)
Upper end is fixedly connected with the lower end of liquid cylinder (8), the elastic component can with connector (11) along central tube (4) is up and quilt
Compression；The lower end of central tube (4) is from inside to outside arranged with lower center tube (14), locking tube (13) and lock sleeve (12) successively, in
Heart pipe (4), lower center tube (14) can be fixedly connected with locking tube (13), under the upper end of lock sleeve (12) and connector (11)
End is fixedly connected, and being additionally provided between lock sleeve (12) and locking tube (13) to make lock sleeve (12) and locking tube (13) connection solid
Fixed lock ring set (16), to set split ring jaggy, the inner surface of lock ring set (16) is provided with internal thread, lock ring to lock ring set (16)
The outer surface of set (16) is provided with external screw thread.
2. thick oil steam drive according to claim 1 unseals bidirectionally anchoring tubing anchor, it is characterised in that on central tube (4)
End is connected with upper cone (1) by external screw thread, and the bottom of upper cone (1) is provided with the first outer cone that radius is from top to bottom gradually decreased
Face；The top of lower cone (6) is provided with the second male cone (strobilus masculinus) that radius from top to bottom gradually increases；The top of slips (3) is provided with and institute
The first inner conical surface of the mating shapes of the first male cone (strobilus masculinus) is stated, the bottom of slips (3) is provided with the shape with second male cone (strobilus masculinus)
The second inner conical surface for matching.
3. thick oil steam drive according to claim 1 unseals bidirectionally anchoring tubing anchor, it is characterised in that in the middle part of slips (3)
Outside wall surface be provided with groove (301), be arranged with sheath (2) outside slips (3), the upper and lower of sheath (2) is respectively equipped with logical
Hole and lower through-hole, the top of slips (3) and the bottom of slips (3) can be corresponded to through the upper through hole and the lower through-hole；Sheath
(2) lower end is fixedly connected with lower cone (6).
4. thick oil steam drive according to claim 3 unseals bidirectionally anchoring tubing anchor, it is characterised in that in groove (301)
It is provided with semielliptic spring (5)；When the top and the bottom of slips (3) pass sheath (2), semielliptic spring (5) can quilt
Groove (301) and sheath (2) compression.
5. thick oil steam drive according to claim 3 unseals bidirectionally anchoring tubing anchor, it is characterised in that under sheath (2)
Sleeve cap (7) is provided between end and lower cone (6), sleeve cap (7) is threadedly coupled with sheath (2), sleeve cap (7) and lower cone
(6) it is slidably connected.
6. thick oil steam drive according to claim 1 unseals bidirectionally anchoring tubing anchor, it is characterised in that the elastic component is
Spring (10), the bottom of upper end contact fixed piston (9) of spring (10), lower end contact connector (11) of spring (10).
7. thick oil steam drive according to claim 1 unseals bidirectionally anchoring tubing anchor, it is characterised in that lower center tube (14)
Lower end by unseal pin (19) connect locking tube (13), when unseal pin (19) cut off after, locking tube (13) being capable of phase
For lower center tube (14) slides.
8. thick oil steam drive according to claim 1 unseals bidirectionally anchoring tubing anchor, it is characterised in that lower center tube (14)
Side wall in be provided with through hole, be provided with the through hole jump closing piece (15)；Being provided with the outer wall of central tube (4) can be embedding
Enter the external groove of part jump closing piece (15), on the inwall of locking tube (13), be provided with the interior of energy embedded part jump closing piece (15)
Groove, jump closing piece (15) can be arranged in the external groove and the through hole or the inner groovy and the through hole
It is interior.
9. thick oil steam drive according to claim 8 unseals bidirectionally anchoring tubing anchor, it is characterised in that jump closing piece (15)
Bottom surface be inclined-plane, the inclined-plane is axially downward-sloping from inside to outside along central tube (4)；When jump closing piece (15) is positioned at described
When in external groove and the through hole, relative can slide between lower center tube (14) and locking tube (13), when jump closing piece
(15), when in the inner groovy and the through hole, relative can slide between central tube (4) and lower center tube (14).
10. thick oil steam drive according to claim 9 unseals bidirectionally anchoring tubing anchor, it is characterised in that the inclined-plane, institute
The bottom surface of the bottom surface and the inner groovy of stating external groove is parallel to each other.
11. thick oil steam drives according to claim 1 unseal bidirectionally anchoring tubing anchor, it is characterised in that lock ring set (16)
Lock ring (17) is arranged with and locking tube (13) between also, the inner surface of lock ring (17) is connected with the outer surface thread of locking tube (13)
Connect, the outer surface of lock ring (17) is threadedly coupled with the inner surface of lock ring set (16), the outer surface and lock sleeve of lock ring set (16)
(12) the inner surface threaded connection of lower end, the external screw thread of lock ring (17) is coarse thread, and the internal thread of lock ring (17) is closely-pitched
Screw thread, the externally threaded pitch of lock ring (17) are more than the pitch of the internal thread of lock ring set (16), the lower end screw thread of lock sleeve (12)
Lower connector (18) is connected with, the lower end of lower connector (18) is fixedly connected with and sets ring (20), the middle part of lower center tube (14)
Be provided with step, when lower center tube (14) relative to set ring (20) it is descending when, the middle part for setting ring (20) can stop described
Rank.
12. thick oil steam drives according to claim 11 unseal bidirectionally anchoring tubing anchor, it is characterised in that locking tube (13)
External screw thread, the internal thread of lock ring (17), the internal thread of the external screw thread of lock ring (17) and lock ring set (16) be saw-tooth thread.
13. thick oil steam drives according to claim 11 unseal bidirectionally anchoring tubing anchor, it is characterised in that lower center tube
(14) screw thread being gone back outside and being arranged with retaining ring (22), the lower end for setting ring (20) is connected solid by setting pin (21) with retaining ring (22)
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654948.9A CN104453757B (en) | 2014-11-17 | 2014-11-17 | Thick oil steam flooding and deblocking two-way anchoring tubing anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654948.9A CN104453757B (en) | 2014-11-17 | 2014-11-17 | Thick oil steam flooding and deblocking two-way anchoring tubing anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104453757A CN104453757A (en) | 2015-03-25 |
| CN104453757B true CN104453757B (en) | 2017-04-05 |
Family
ID=52900433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410654948.9A Active CN104453757B (en) | 2014-11-17 | 2014-11-17 | Thick oil steam flooding and deblocking two-way anchoring tubing anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104453757B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505547B (en) * | 2018-11-27 | 2019-08-02 | 大庆市晟威机械制造有限公司 | Tubing anchor |
| CN110630197B (en) * | 2019-10-30 | 2020-10-09 | 南通市华业石油机械有限公司 | Hydraulic anchor |
| CN111894565B (en) * | 2020-07-14 | 2024-03-22 | 中煤科工开采研究院有限公司 | Device for testing crack expansion in surrounding rock |
| CN111946281B (en) * | 2020-08-07 | 2022-04-29 | 中国石油大学(北京) | Liner hanger |
| CN111927390B (en) * | 2020-08-17 | 2021-10-29 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN115680531B (en) * | 2021-07-30 | 2024-06-25 | 中国石油天然气股份有限公司 | Anti-seize bidirectional anchor and method of use thereof |
| CN115263258B (en) * | 2022-09-19 | 2022-12-13 | 东营华辰石油装备有限公司 | Reduce calorific loss's viscous crude heat and adopt gas injection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239266A (en) * | 1978-01-16 | 1980-12-16 | Bill B. Berryhill | Pipe connector apparatus |
| CN2599213Y (en) * | 2003-04-14 | 2004-01-14 | 郎庆业 | Bidirectional rotation slips oil pipe anchor |
| CN2648044Y (en) * | 2003-10-21 | 2004-10-13 | 盘锦辽河油田科技实业有限公司 | Mechanical type hydraulic oil pipe anchor |
| CN2916104Y (en) * | 2006-05-01 | 2007-06-27 | 中国石化股份胜利油田分公司采油工艺研究院 | Hydraulic oil pipe anchoring tools |
| CN101165310A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | One-way slip hydraulic base sealed packer |
| CN103982153A (en) * | 2014-05-30 | 2014-08-13 | 四机赛瓦石油钻采设备有限公司 | Ball injecting de-blocking hydraulic tubing anchor |
-
2014
- 2014-11-17 CN CN201410654948.9A patent/CN104453757B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239266A (en) * | 1978-01-16 | 1980-12-16 | Bill B. Berryhill | Pipe connector apparatus |
| CN2599213Y (en) * | 2003-04-14 | 2004-01-14 | 郎庆业 | Bidirectional rotation slips oil pipe anchor |
| CN2648044Y (en) * | 2003-10-21 | 2004-10-13 | 盘锦辽河油田科技实业有限公司 | Mechanical type hydraulic oil pipe anchor |
| CN2916104Y (en) * | 2006-05-01 | 2007-06-27 | 中国石化股份胜利油田分公司采油工艺研究院 | Hydraulic oil pipe anchoring tools |
| CN101165310A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | One-way slip hydraulic base sealed packer |
| CN103982153A (en) * | 2014-05-30 | 2014-08-13 | 四机赛瓦石油钻采设备有限公司 | Ball injecting de-blocking hydraulic tubing anchor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104453757A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104453757B (en) | Thick oil steam flooding and deblocking two-way anchoring tubing anchor | |
| CN103321604B (en) | With the packer of safety valve | |
| US10450837B2 (en) | Sleeve fracturing assembly, device using the same and method for using the same | |
| CN204357385U (en) | Unlockable hydraulic casing anchoring device | |
| CN105201446B (en) | Bidirectional bearing blanking plug | |
| CN111075388B (en) | Hydraulic releasing packer and method for preventing midway setting | |
| CN104074491A (en) | Oil pipe bridge plug | |
| CN204252969U (en) | Sand prevention tubular column and production tubular column | |
| CN103573210A (en) | Quick drill composite pipe bridge plug | |
| CN104047563B (en) | Deblocking packer is pressed under hydraulic setting | |
| CN103216210A (en) | Top packer used for preventing sand | |
| CN205778731U (en) | A kind of sliding sleeve switch bridging plug | |
| CN207296937U (en) | High-pressure oil-gas well hydraulic oil pipe anchoring device | |
| CN203978373U (en) | Hydraulic setting presses down deblocking packer | |
| CN201794552U (en) | Large-diameter fracturing packer | |
| CN114809980A (en) | Hydraulic temporary bridge plug | |
| CN107542418A (en) | High-pressure oil-gas well hydraulic oil pipe anchoring device and its method of work | |
| CN206280047U (en) | Temporary blocking type big orifice bridging plug | |
| CN104329046B (en) | Rotary hydraulic packer | |
| CN203383783U (en) | Closed-type bottom reversing switch | |
| CN110529068A (en) | Special packer for underground non-metal pipe | |
| CN103291235A (en) | Tool for sending hydraulic packer into well | |
| CN108999589B (en) | Downhole blowout preventer for workover operation | |
| CN203347718U (en) | Running tool for hydraulic packer | |
| CN103321599B (en) | A kind of Multifunctional ground anchor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |