CN104453757A - 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
- CN104453757A CN104453757A CN201410654948.9A CN201410654948A CN104453757A CN 104453757 A CN104453757 A CN 104453757A CN 201410654948 A CN201410654948 A CN 201410654948A CN 104453757 A CN104453757 A CN 104453757A
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- Prior art keywords
- tube
- deblocking
- slips
- lock ring
- lock
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- 238000010795 Steam Flooding Methods 0.000 title claims abstract description 30
- 238000004873 anchoring Methods 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000013011 mating Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 5
- 241000282472 Canis lupus familiaris Species 0.000 description 25
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000010793 Steam injection (oil industry) Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005065 mining 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
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- 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 current oil-gas field development is all be applied to thin oil mining tubular column, and thin oil exploitation tubing anchor is used for oil well pump flow string, and grappling oil pipe prevents tubing string from extending, and increases pump efficiency.For the thermal recovery technology such as thick oil steam drive, steam soak, heavy crude heat extraction technique is usually because underground working is poor, well temperature is high and the production cycle is long, tubing string can be caused frequently to wriggle up and down when producing adjustment, the tubing anchor of therefore thin oil production cannot meet the requirement of heavy crude heat extraction technique at all.It is adopt band slip-type thermal packer that Liaohe Oil Field conventional vapor drives process pipe string for preventing the instrument of string creep; this packer effectively can prevent string creep; protection upper strata sleeve pipe; but lift pipe string packer not easily deblocking after long-term steam injection; often card well phenomenon is had to occur; bring difficulty to construction, increase cost, reduce production efficiency.
Summary of the invention
In order to overcome the problem of packer that prior art prevents string creep not easily deblocking, the invention provides a kind of thick oil steam drive deblocking bidirectionally anchoring tubing anchor, it is firm to set, and triple solution sealing mechanism can be adopted to carry out deblocking to tubing anchor, possesses and separates sealing property reliably.
The technical solution adopted for the present invention to solve the technical problems is: described thick oil steam drive deblocking bidirectionally anchoring tubing anchor comprises slips, central tube, lower cone, liquid cylinder and fixed piston, the upper end that slip sleeve is located at central tube is outside, lower cone slip cap is located at the outer and top contact slips of lower cone of central tube, and slips can realize grappling or deblocking along with lower cone along the axial upstream or downstream of central tube; Fixed piston fixed cover is located at the middle part of central tube, and liquid cylinder slip cap is located at outside fixed piston, the upper end of liquid cylinder and the lower end of lower cone are sealedly and fixedly connected, central tube, lower cone, liquid cylinder and fixed piston surround formation hydraulic cavities, and central tube is provided with through hole in the position of the described hydraulic cavities of correspondence; The lower end of fixed piston is connected with elastic component, and the below of described elastic component is provided with slip cap and is located at connector outside central tube, and the upper end of connector is fixedly connected with the lower end of liquid cylinder, and described elastic component can be up and compressed along central tube along with connector.
Central tube upper end is connected with upper cone by external screw thread, and the bottom of upper cone is provided with the first male cone (strobilus masculinus) that radius reduces gradually from top to bottom; The top of lower cone is provided with the second male cone (strobilus masculinus) that radius increases gradually from top to bottom; The top of slips is provided with the first inner conical surface with the mating shapes of described first male cone (strobilus masculinus), and the bottom of slips is provided with the second inner conical surface with the mating shapes of described second male cone (strobilus masculinus).
Outside wall surface in the middle part of slips is provided with groove, is arranged with sheath outside slips, and the upper and lower of sheath is respectively equipped with through hole and lower through-hole, and the top of slips and the bottom of slips can be corresponding to described upper through hole and described lower through-hole; The lower end of sheath is fixedly connected with lower cone.
Semielliptic spring is provided with in groove; When the described top of slips and described bottom pass sheath, semielliptic spring can be compressed by groove and sheath.
Be provided with sleeve cap between the lower end of sheath and hypocentrum, sleeve cap is threaded with sheath, and sleeve cap and hypocentrum are slidably connected.
Described elastic component is 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 successively, central tube, lower center tube can be fixedly connected with locking tube, the upper end of lock sleeve is fixedly connected with the lower end of connector, the lock ring cover that lock sleeve and locking tube can be made to be connected and fixed also is provided with between lock sleeve and locking tube, lock ring cover is for establishing split ring jaggy, the inner surface of lock ring cover is provided with internal thread, and the external surface of lock ring cover is provided with external screw thread.
The lower end of lower center tube connects locking tube by deblocking pin, and after deblocking pin is cut off, locking tube can slide relative to lower center tube.
Be provided with through hole in the sidewall of lower center tube, in described through hole, be provided with jump lock dog; The outer wall of central tube is provided with the outer groove of energy embedded part jump lock dog, the inwall of locking tube is provided with can the inner groovy of embedded part jump lock dog, and jump lock dog can be arranged in described outer groove and described through hole or in described inner groovy and described through hole.
The bottom surface of jump lock dog is inclined-plane, and described inclined-plane is that centrally pipe is axially downward-sloping from inside to outside; When jump lock dog is positioned at described outer groove and described through hole, can relative sliding between lower center tube and locking tube, when jump lock dog is positioned at described inner groovy and described through hole, can relative sliding between central tube and lower center tube.
Described inclined-plane, the bottom surface of described outer groove and the bottom surface of described inner groovy are parallel to each other.
Also lock ring is arranged with between lock ring cover and locking tube, the inner surface of lock ring is connected with the outer surface thread of locking tube, the inner surface that external surface and the lock ring of lock ring overlap is threaded, the external surface of lock ring cover is threaded with the inner surface of the lower end of lock sleeve, the external screw thread of lock ring is coarse thread, the internal thread of lock ring is fine thread, the externally threaded pitch of lock ring is greater than the pitch of the internal thread of lock ring cover, the lower end of lock sleeve has been threaded lower connector, the lower end of lower connector is fixedly connected with and sets ring, the middle part of lower center tube is provided with step, when lower center tube relative to set ring descending time, the middle part setting ring can stop described step.
The internal thread of the external screw thread of the external screw thread of locking tube, the internal thread of lock ring, lock ring and lock ring cover is saw-tooth thread.
Go back thread bush outside lower center tube and be provided with retaining ring, the lower end setting ring is by setting pin and retaining ring is connected and fixed.
The beneficial effect of thick oil steam drive deblocking bidirectionally anchoring tubing anchor of the present invention is, set structure simple, flexible movements, grappling is reliable, effectively can reduce the impact producing string creep because steam flooding well well temperature changes and cause, meet the requirement of steam flooding thermal recovery technology, and there is triple deblocking mode, under severe hole condition condition, reliable deblocking action can be completed, possess and higher be constructed into power.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention will be further described.
Fig. 1 is the structural representation of thick oil steam drive deblocking bidirectionally anchoring tubing anchor of the present invention;
Fig. 2 is the structural representation of lock ring of the present invention cover;
Fig. 3 is the structural representation of 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 cone, 7. sleeve cap, 8. liquid cylinder, 9. fixed piston, 10. spring, 11. connectors, 12. lock sleeves, 13. locking tubes, 14. lower center tubes, 15. jump lock dogs, 16. lock ring covers, 17. lock rings, 18. times connectors, 19. deblocking pins, 20. set ring, and 21. set pin, 22. retaining rings.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
As shown in Figure 1 to Figure 3, the present invention proposes a kind of thick oil steam drive deblocking bidirectionally anchoring tubing anchor, comprise slips 3, central tube 4, lower cone 6, liquid cylinder 8 and fixed piston 9, the upper end that slips 3 is sheathed on central tube 4 is outside, lower cone 6 slip cap is located at the outer and top contact slips 3 of lower cone 6 of central tube 4, and slips 3 can realize grappling or deblocking along with lower cone 6 along the axial upstream or downstream of central tube 4; Fixed piston 9 fixed cover is located at the middle part of central tube 4, and liquid cylinder 8 slip cap is located at outside fixed piston 9, the upper end of liquid cylinder 8 and the lower end of lower cone 6 are sealedly and fixedly connected, central tube 4, lower cone 6, liquid cylinder 8 and fixed piston 9 surround formation hydraulic cavities, and central tube 4 is provided with through hole in the position of the described hydraulic cavities of correspondence; The lower end of fixed piston 9 is connected with elastic component, the below of described elastic component is provided with slip cap and is located at connector 11 outside central tube 4, the upper end of connector 11 is fixedly connected with the lower end of liquid cylinder 8, and described elastic component can be up and compressed along central tube 4 along with connector 11.
Thick oil steam drive deblocking bidirectionally anchoring tubing anchor structure of the present invention is simple, relies on to assist to set club shutoff bottom oil pipe inner chamber when setting, and can realize suppressing setting, above carry central tube 4 and can realize deblocking, flexible movements.Set in process, liquid enters described hydraulic cavities by the described through hole on central tube 4, lower cone 6 under the effect of hydraulic pressure along central tube 4 axially up push card watts 3 radially outwards open grappling, tubing anchor of the present invention completes and sets.Meanwhile, lower cone 6 drive hydraulic cylinder 8, connector 11 along central tube 4 axially upwards, connector 11 compresses the described elastic component be arranged between fixed piston 9 and connector 11.When on carry central tube 4 disanchor slips 3 time, fixed piston 9 along with central tube 4 up, the elastic force of described elastic component assists fixed piston 9 up, and lower cone 6 is descending relative to central tube 4, and slips 3 is disanchored thereupon.
Described hydraulic cavities is surrounded by the end face of 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 and is formed, in order to simplify the structure of tubing anchor of the present invention, be set to inner small and outside big inner conical surface in the bottom surface of lower cone 6, it is leg-of-mutton hydraulic cavities that described inner conical surface and central tube 4, fixed piston 9 form longitudinal section.The bottom surface of lower cone 6 also other can form the shape of hydraulic cavities.
Consider the grappling of slips 3 and disanchor to the dependence of hypocentrum, preferably adopting the design of cone structure, set and deblocking to make slips 3 be easy to.Connect upper cone 1 in the upper end of central tube 4 by external screw thread, the bottom of upper cone 1 is provided with the first male cone (strobilus masculinus) that radius reduces gradually from top to bottom; The top of lower cone 6 is provided with the second male cone (strobilus masculinus) that radius increases gradually from top to bottom; The top of slips 3 is provided with the first inner conical surface with the mating shapes of described first male cone (strobilus masculinus), and the bottom of slips 3 is provided with the second inner conical surface with the mating shapes of described second male cone (strobilus masculinus).When described lower cone 6 upwards contact slips 3 time, the second male cone (strobilus masculinus) of lower cone 6 matches with the second inner conical surface of slips 3, makes slips 3 can be up by lower cone 6 contact relatively easily; Meanwhile, the first inner conical surface of slips 3 matches with the second male cone (strobilus masculinus) of upper cone 1, and up second male cone (strobilus masculinus) of climbing up upper cone 1 of slips 3, slips 3 radially against on casing wall, completes grappling.
Promote in the process that slips 3 radially outward opens at hypocentrum 6, set up a radial restriction, be beneficial to moving axially of slips 3, outside wall surface in the middle part of slips 3 arranges groove 301, sheath 2 is arranged with outside slips 3, the upper and lower of sheath 2 is respectively equipped with through hole and lower through-hole, and sheath 2 forms the retainer ring 201 corresponding to groove 301 on described between through hole and described lower through-hole, and the top of slips 3 and the bottom of slips 3 can be corresponding to described upper through hole and described lower through-hole; The lower end of sheath 2 is fixedly connected with lower cone 6.In the process that slips 3 radial direction is opened, grappling the corresponding described upper through hole through sheath 2 and described lower through-hole can only be carried out in the top of slips 3 and the bottom of slips 3, the design of sheath 2 not only provides a radial restraint to slips 3, more can reduce the wearing and tearing of slips 3, extend the application life of slips 3.
In order to assist the radial direction of slips 3 to return, in groove 301, be provided with semielliptic spring 5; When the described top of slips 3 and described bottom pass sheath 2, semielliptic spring 5 can be compressed by groove 301 and sheath 2.Semielliptic spring 5 after compression can promote slips 3 and radially-inwardly move along central tube 4, and in the process that slips 3 shrinks, semielliptic spring 5 can help slips 3 radially-inwardly to return from sheath 2.
In addition, between the lower end of sheath 2 and hypocentrum 6, be also provided with the sleeve cap 7 protecting sheath 2, sleeve cap 7 is threaded with sheath 2, and sleeve cap 7 and hypocentrum 6 are slidably connected.
In a concrete embodiment, described elastic component is spring 10, the bottom of the upper end contact fixed piston 9 of spring 10, the lower end contact connector 11 of spring 10.
Hydraulic pressure is laid down after slips 3 grappling, in order to ensure after laying down hydraulic pressure, parts such as hydraulic cylinder 8 grade can not under gravity centrally pipe 4 axis fall, the from inside to outside sheathed lower center tube 14 successively in the lower end of central tube 4, locking tube 13 and lock sleeve 12, central tube 4, lower center tube 14 can be fixedly connected with locking tube 13, the upper end of lock sleeve 12 is fixedly connected with the lower end of connector 11, the lock ring cover 16 that lock sleeve 12 and locking tube 13 can be made to be connected and fixed also is provided with between lock sleeve 12 and locking tube 13, lock ring cover 16 is for establishing split ring jaggy, the inner surface of lock ring cover 16 is provided with internal thread, the external surface of lock ring cover 16 is provided with external screw thread.When hydraulic pressure enters described hydraulic cylinder, hypocentrum 6 can drive connector 11, lock ring overlaps 12 up, and due to the open ring structure of lock ring cover 16, locking tube 13 can strut lock ring cover 16, slips 3 grappling smoothly; After laying down hydraulic pressure, locking tube 13 overlaps 16 with lock ring engage by the internal thread of lock ring cover 16, and tubing anchor of the present invention is locked, and parts such as hydraulic cylinder 8 grade can not fall.
Employ the tubing anchor of the present invention of lock ring cover 16, when deblocking, need larger deblocking power.Be enough to the grappling of opening slips 3 in order to ensure the deblocking power being supplied to slips 3 during deblocking, connect locking tube 13 in the lower end of lower center tube 14 by deblocking pin 19, after deblocking pin 19 is cut off, locking tube 13 can slide relative to lower center tube 14.When needing deblocking, on carry central tube 4 and drive lower center tube 14 up, deblocking pin 19 is cut off, and locking tube 13 and the lock ring be fixedly connected with locking tube 13 overlap 16, the gravity of lock sleeve 12, connector 11, hydraulic cylinder 8, to the first heavy deblocking power that hypocentrum 6 provides slips 3 to disanchor.
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 the deblocking power utilizing the weight of tubing string to become slips 3 deblocking, in one preferred embodiment, in the sidewall of lower center tube 14, be provided with through hole, in described through hole, be provided with jump lock dog 15; The outer wall of central tube 4 is provided with the outer groove of energy embedded part jump lock dog 15, the lower end of lower center tube 14 is provided with the external screw thread that can be spirally connected with tubing string, the inwall of locking tube 13 is provided with can the inner groovy of embedded part jump lock dog 15, and jump lock dog 15 can be arranged in described outer groove and described through hole or in described inner groovy and described through hole.When jump lock dog 15 is arranged in described outer groove and described through hole, central tube 4 is fixedly connected with lower center tube 14 by jump lock dog 15, and lower center tube 14 can up and up along with central tube 4; When jump lock dog 15 is arranged in described through hole and described inner groovy, locking tube 13 is fixedly connected with lower center tube 14 by jump lock dog 15, the tubing string be spirally connected with lower center tube 14 is fixedly connected with connector 11 with locking tube 13 by lower center tube 14, form the second heavy deblocking power of slips 3 deblocking, make slips 3 more easily by deblocking, the unblock of tubing anchor of the present invention can be realized.
In order to make jump lock dog 15 can successfully from the outer groove landing of central tube 4 to the inner groovy of locking tube 13, the bottom surface of jump lock dog 15 be set to inclined-plane, and described inclined-plane is that centrally pipe 4 is axially downward-sloping from inside to outside; When jump lock dog 15 is positioned at described outer groove and described through hole, can relative sliding between lower center tube 14 and locking tube 13, when jump lock dog 15 is positioned at described inner groovy and described through hole, can relative sliding between central tube 4 and lower center tube 14.When lower center tube 14 can axis be up along with the axis of central tube 4 is up, due to the effect of gravity, jump lock dog 15 can from landing in described outer groove and described through hole in described through hole and described inner groovy.Further, described inclined-plane, the bottom surface of described outer groove and the bottom surface of described inner groovy are parallel to each other, lower center tube 14 can along with central tube 4 axially walk to a certain position time, the bottom surface of described inclined-plane, described inner groovy, the bottom surface of described outer groove can be positioned at same plane.
Lock ring 17 is also arranged with between lock ring cover 16 and locking tube 13, the inner surface of lock ring 17 is connected with the outer surface thread of locking tube 13, the inner surface that external surface and the lock ring of lock ring 17 overlap 16 is threaded, the external surface of lock ring cover 16 is threaded with the inner surface of the lower end of lock sleeve 12, simultaneously, the external screw thread of lock ring 17 is coarse thread, the internal thread of lock ring 17 is fine thread, the externally threaded pitch of lock ring 17 is greater than the pitch of the internal thread of lock ring cover 16, the lower end of lock sleeve 12 has been threaded lower connector 18, the lower end of lower connector 18 is fixedly connected with and sets ring 20, the middle part of lower center tube 14 is provided with step, when lower center tube 14 relative to set ring 20 descending time, the middle part setting ring 20 can stop described step.Setting in process, the external screw thread of lock ring 17 replaces the external screw thread of aforementioned middle locking tube 13, struts lock ring cover 16, makes slips 3 can grappling smoothly, and tubing anchor of the present invention sets.In deblocking process, central tube 4 drives lower center tube 14 up until jump lock dog 15 landing is in described through hole and described inner groovy, lower center tube 14 is fixedly connected with locking tube 13 by jump lock dog 15, it is 16 up that locking tube 13 drives lock ring 17 to overlap relative to lock ring, the pitch of overlapping the screw thread that 16 engage due to lock ring 17 and lock ring is greater than the pitch of the screw thread that lock ring 17 engages with locking tube 13, when deblocking load within the specific limits time, lock ring 17 cannot strut lock ring cover 16, and lower center tube 14 is still fixedly connected with connector 11.If in deblocking process, deblocking load is excessive, lock ring 17 and lock ring overlap engaging between 16 when departing from, the lower end tubing string of tubing anchor of the present invention can centrally pipe 4 be descending simultaneously with lower center tube 14, locking tube 13 and lock ring 17, the step of central tube 14 can be subject to setting the stop of ring 20 and clash into and set ring 20, and impact and the parts such as liquid cylinder 8, hypocentrum 6 setting ring 20 and be connected, the triple deblocking power of formation.
The internal thread of the external screw thread of the external screw thread of locking tube 13, the internal thread of lock ring 17, lock ring 17 and lock ring cover 16 is preferably set to saw-tooth thread, be conducive to lock ring cover 16 up relative to lock ring 17 time, lock ring 17 can strut lock ring cover 16 smoothly, and lock ring cover 16 stop up time, lock ring 17 and lock ring overlap 16 and engage and lock, and are also conducive to lock ring 17 simultaneously and engage with the locking of locking tube 13.
Outside lower center tube 14, go back thread bush be provided with retaining ring 22, the lower end setting ring 20 is connected and fixed with retaining ring 22 by setting pin 21.
Alloy plating technological measure is all taked on the surface of all moving components of thick oil steam drive deblocking bidirectionally anchoring tubing anchor of the present invention, causes downhole tool easily to produce the problem such as oxidation and rusting and fouling to avoid long-term steam injection.
Illustrate the course of work of thick oil steam drive deblocking bidirectionally anchoring tubing anchor of the present invention below.
When setting, highly pressurised liquid is injected in central tube 4, liquid enters described hydraulic cavities by the described through hole on central tube 4, hypocentrum 6 is axially up along central tube 4 under the effect of hydraulic pressure, upwardly slips 3 radially outwards opens, under the restriction of sheath 2, slips 3 climbs up the conical surface of centrum 1, radially support on casing wall, realize the grappling of slips 3, in the process, hypocentrum 6 drives hydraulic cylinder 8, connector 11, lock sleeve 12, lower connector 18, set ring 20 up, cut off and set pin 21, it is 16 up that lock sleeve 12 drives lock ring to overlap, lock ring 17 and locking tube 13 produce relative displacement, tubing anchor of the present invention is locked.
During deblocking, on carry oil pipe, oil pipe drives upper centrum 1, central tube 4 is up, due to the effect of jump lock dog 15, lower center tube 14 is upwards stressed together, slips 3 and sleeve pipe grappling, downward reaction force can be produced, impel hypocentrum 6 and connected miscellaneous part by downward active force, deblocking pin 19 is cut off, at this moment spring 10 is laid in elasticity and can be discharged, promote parts such as connector 11 grade to lower stress, hypocentrum 6 can be drawn out of from slips 3, if this mechanism is due to the inefficacy of long-time down-hole steam injection, or normally work, continuation is put on centrum 1 and central tube 4, lower center tube 14 and locking tube 13 can produce relative displacement, the weight of the tubing string that jump lock dog 15 connects lower center tube 14 is applied on locking tube 13 and the parts such as coupled, tubing string weight realizes double deblocking on lower side, if deblocking load is very large, lock ring 17 and lock ring overlap 16 and throw off, tubing anchor lower end tubing string can with lower center tube 14, locking tube 13, lock ring 17 moves downward, the step of lower center tube 14 clashes into and sets ring 20, impact the fluid cylinder 8 be attached thereto, parts such as hypocentrum 6 grade, realize triple deblocking.
From the above, tubing anchor of the present invention makes to set very firm by arranging lock ring cover 16 and lock ring 17, and is provided with triple solution sealing mechanism and carries out deblocking to tubing anchor, possess and separate sealing property reliably.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.And it should be noted that, each ingredient of the present invention is not limited in above-mentioned overall applicability, the each technical characteristic described in manual of the present invention can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the present invention naturally covers other relevant with this case innovative point and combines and embody rule.
Claims (14)
1. a thick oil steam drive deblocking bidirectionally anchoring tubing anchor, it is characterized in that, described thick oil steam drive deblocking bidirectionally anchoring tubing anchor comprises slips (3), central tube (4), lower cone (6), liquid cylinder (8) and fixed piston (9), the upper end that slips (3) is sheathed on central tube (4) is outside, lower cone (6) slip cap is located at central tube (4) and top contact slips (3) of lower cone (6) outward, slips (3) can realize grappling or deblocking along with lower cone (6) along the axial upstream or downstream of central tube (4), fixed piston (9) fixed cover is located at the middle part of central tube (4), and liquid cylinder (8) slip cap is located at fixed piston (9) outward, the upper end of liquid cylinder (8) and the lower end of lower cone (6) are sealedly and fixedly connected, central tube (4), lower cone (6), liquid cylinder (8) and fixed piston (9) surround formation hydraulic cavities, and central tube (4) is provided with through hole in the position of the described hydraulic cavities of correspondence, the lower end of fixed piston (9) is connected with elastic component, the below of described elastic component is provided with slip cap and is located at central tube (4) connector outward (11), the upper end of connector (11) is fixedly connected with the lower end of liquid cylinder (8), and described elastic component can be up and compressed along central tube (4) along with connector (11).
2. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 1, it is characterized in that, central tube (4) upper end is connected with upper cone (1) by external screw thread, and the bottom of upper cone (1) is provided with the first male cone (strobilus masculinus) that radius reduces gradually from top to bottom; The top of lower cone (6) is provided with the second male cone (strobilus masculinus) that radius increases gradually from top to bottom; The top of slips (3) is provided with the first inner conical surface with the mating shapes of described first male cone (strobilus masculinus), and the bottom of slips (3) is provided with the second inner conical surface with the mating shapes of described second male cone (strobilus masculinus).
3. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 1, it is characterized in that, the outside wall surface at slips (3) middle part is provided with groove (301), sheath (2) is arranged with outside slips (3), the upper and lower of sheath (2) is respectively equipped with through hole and lower through-hole, and the top of slips (3) and the bottom of slips (3) can be corresponding to described upper through hole and described lower through-hole; The lower end of sheath (2) is fixedly connected with lower cone (6).
4. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 3, is characterized in that, be provided with semielliptic spring (5) in groove (301); When the described top of slips (3) and described bottom pass sheath (2), semielliptic spring (5) can by groove (301) and sheath (2) compression.
5. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 3, it is characterized in that, sleeve cap (7) is provided with between the lower end of sheath (2) and hypocentrum (6), sleeve cap (7) is threaded with sheath (2), and sleeve cap (7) and hypocentrum (6) are slidably connected.
6. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 1, it is characterized in that, described 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 deblocking bidirectionally anchoring tubing anchor according to claim 1, it is characterized in that, the lower end of central tube (4) is from inside to outside arranged with lower center tube (14) successively, locking tube (13) and lock sleeve (12), central tube (4), lower center tube (14) can be fixedly connected with locking tube (13), the upper end of lock sleeve (12) is fixedly connected with the lower end of connector (11), the lock ring cover (16) that lock sleeve (12) and locking tube (13) can be made to be connected and fixed also is provided with between lock sleeve (12) and locking tube (13), lock ring cover (16) is for establishing split ring jaggy, the inner surface of lock ring cover (16) is provided with internal thread, the external surface of lock ring cover (16) is provided with external screw thread.
8. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 7, it is characterized in that, the lower end of lower center tube (14) connects locking tube (13) by deblocking pin (19), after deblocking pin (19) is cut off, locking tube (13) can slide relative to lower center tube (14).
9. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 7, is characterized in that, be provided with through hole in the sidewall of lower center tube (14), be provided with jump lock dog (15) in described through hole; The outer wall of central tube (4) is provided with the outer groove of energy embedded part jump lock dog (15), the inwall of locking tube (13) is provided with can the inner groovy of embedded part jump lock dog (15), and jump lock dog (15) can be arranged in described outer groove and described through hole or in described inner groovy and described through hole.
10. thick oil steam drive deblocking bidirectionally anchoring tubing anchor according to claim 9, is characterized in that, the bottom surface of jump lock dog (15) is inclined-plane, and described inclined-plane is that centrally pipe (4) is axially downward-sloping from inside to outside; When jump lock dog (15) is positioned at described outer groove and described through hole, can relative sliding between lower center tube (14) and locking tube (13), when jump lock dog (15) is positioned at described inner groovy and described through hole, can relative sliding between central tube (4) and lower center tube (14).
11. thick oil steam drive deblocking bidirectionally anchoring tubing anchors according to claim 10, it is characterized in that, described inclined-plane, the bottom surface of described outer groove and the bottom surface of described inner groovy are parallel to each other.
12. thick oil steam drive deblocking bidirectionally anchoring tubing anchors according to claim 7, it is characterized in that, lock ring (17) is also arranged with between lock ring cover (16) and locking tube (13), the inner surface of lock ring (17) is connected with the outer surface thread of locking tube (13), the external surface of lock ring (17) is threaded with the inner surface of lock ring cover (16), the external surface of lock ring cover (16) is threaded with the inner surface of the lower end of lock sleeve (12), the external screw thread of lock ring (17) is coarse thread, the internal thread of lock ring (17) is fine thread, the externally threaded pitch of lock ring (17) is greater than the pitch of the internal thread of lock ring cover (16), the lower end of lock sleeve (12) has been threaded lower connector (18), the lower end of lower connector (18) is fixedly connected with and sets ring (20), the middle part of lower center tube (14) is provided with step, when lower center tube (14) relative to set ring (20) descending time, the middle part setting ring (20) can stop described step.
13. thick oil steam drive deblocking bidirectionally anchoring tubing anchors according to claim 12, it is characterized in that, the external screw thread of locking tube (13), the internal thread of lock ring (17), the external screw thread of lock ring (17) and the internal thread of lock ring cover (16) are saw-tooth thread.
14. thick oil steam drive deblocking bidirectionally anchoring tubing anchors according to claim 12, it is characterized in that, go back thread bush outside lower center tube (14) and be provided with retaining ring (22), the lower end setting ring (20) is connected and fixed with retaining ring (22) by setting pin (21).
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| 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 |
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| CN201410654948.9A CN104453757B (en) | 2014-11-17 | 2014-11-17 | Thick oil steam flooding and deblocking two-way anchoring tubing anchor |
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| CN104453757A true CN104453757A (en) | 2015-03-25 |
| CN104453757B CN104453757B (en) | 2017-04-05 |
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| CN110630197A (en) * | 2019-10-30 | 2019-12-31 | 南通市华业石油机械有限公司 | Hydraulic anchor |
| CN111894565A (en) * | 2020-07-14 | 2020-11-06 | 中煤科工开采研究院有限公司 | Device for testing crack expansion in surrounding rock |
| CN111927390A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN111946281A (en) * | 2020-08-07 | 2020-11-17 | 中国石油大学(北京) | Liner hanger |
| CN115263258A (en) * | 2022-09-19 | 2022-11-01 | 东营华辰石油装备有限公司 | Reduce calorific loss's viscous crude heat and adopt gas injection device |
| CN115680531A (en) * | 2021-07-30 | 2023-02-03 | 中国石油天然气股份有限公司 | Anti-seize bi-directional anchor and method of use thereof |
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| CN115680531A (en) * | 2021-07-30 | 2023-02-03 | 中国石油天然气股份有限公司 | Anti-seize bi-directional anchor and method of use thereof |
| 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 |
| CN115263258A (en) * | 2022-09-19 | 2022-11-01 | 东营华辰石油装备有限公司 | Reduce calorific loss's viscous crude heat and adopt gas injection device |
| 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 |
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