CN109505551A - A kind of underground fishing type hydraulic booster release device - Google Patents
A kind of underground fishing type hydraulic booster release device Download PDFInfo
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- CN109505551A CN109505551A CN201811612539.7A CN201811612539A CN109505551A CN 109505551 A CN109505551 A CN 109505551A CN 201811612539 A CN201811612539 A CN 201811612539A CN 109505551 A CN109505551 A CN 109505551A
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- 238000004873 anchoring Methods 0.000 claims abstract description 30
- 241000935974 Paralichthys dentatus Species 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 3
- 241000251468 Actinopterygii Species 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 15
- 230000008439 repair process Effects 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 abstract description 3
- 239000004576 sand Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (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 discloses the outer tubes that a kind of underground fishing type hydraulic booster release device, anchoring body (1), spline housing (2) and piston bush (3) including being from top to bottom threadedly coupled are constituted；The inner tube that the splined shaft (4) being from top to bottom threadedly coupled, mandrel (5) and piston (6) are constituted is equipped in outer tube；Piston (6) lower end is threadedly coupled through lower contact (7) with fishing anchor (8) are lifted.The present invention changes the force way of tubing string, generates pulling force directly to underground fish in such a way that oil pipe is suppressed, and underground fish is made to generate movement, realizes that horizontal well is salvaged.It replaces heavy repair task to carry out unfreezing with light maintenance routine work to realize, solves the problems, such as that oil-water well heavy repair task input cost is high, it is poor to salvage effect.
Description
Technical field
The present invention relates to a kind of underground fishing type hydraulic booster release devices, belong to oil well operation equipment technical field.
Background technique
At present during underground construction, due to shaking out, fouling, tube corrosion, casing deformation etc. often cause card oil pipe
Phenomenon causes oil pipe not mention not come out.Especially in horizontal well development production process, oil-water well needs tripping in sand screen, layering envelope
Horizontal well operations are carried out every tools such as devices.These tool long-term works are in underground, due to corrosion and scaling, casing deformation and damage
Etc. reasons, card well accident frequent occurrence.After sand screen and layer separating packer failure, implementing fishing just becomes recovery production
The only resource of energy；There are three types of the common salvaging modes of sand screen and layer separating packer: activity unfreezing；Set milling, back-off are salvaged；
Common activity unfreezing is taken by common workover rig, above proposes unfreezing, vibration unfreezing and back-off overshot unfreezing often completely energetically
Foot does not know about the requirement of card or ground is above mentioned with hydraulic lifting, thus often pulls off oil pipe or solution card crash.If unfreezing is lost
It loses, then need replacing large-tonnage derrick and changes drilling rod, waste a large amount of man power and material.Cause heavy repair task frequent, thus greatly
Oil-water well heavy repair task expense is increased greatly.For common light maintenance operation workover rig load, small, most of upper lifting force is by tubing string
Flexible, friction and self weight are consumed, and can only be met common inspection pump, inspection pipe, be changed the characteristics of job requirements such as envelope, underground hydraulic solution
Card technique is the first-elected technology that Horizontal Well lower tubular column (especially sand screen) is salvaged, and divides supporting tool underground to beat by increased portion
Type hydraulic booster release device+lifting type fishing spear is fished out, changes the force way of tubing string, directly in card in such a way that oil pipe is suppressed
Point directly generates pulling force, realizes that horizontal well sand screen is salvaged.
The technological core for salvaging unfreezing is that the i.e. unfreezing power of power of the guarantee effect on fish is sufficiently large, to overcome fish institute
The clamp force received.The lifting load of operating equipment will overcome the frictional force ability between fishing string gravity and casing and fishing string
It is transmitted to fish.Operating equipment hoisting power, fishing string intensity, well depth and hole curvature are to influence special wells to salvage solution
The principal element of card.
(1) the light maintenance operating equipment of people is thrown in requirement oil field of the unfreezing power to operating equipment at present, is mentioned for 390 kN grades with configuration
Based on the tractor hoist of the system of liter, workover derrick ultimate load is 750kN, and deep-well, special wells unfreezing power are often beyond logical
Well machine maximum allowable service load is not able to satisfy the needs of fishing construction, it is necessary to be completed using heavy repair task truck-mounted drilling rig
Unfreezing construction, to increase considerably construction cost, extension is lain the well time, reduces oil well output.
(2) influence special wells of the special casing programme to unfreezing power are mostly directional well, are generally had in inclination section
Biggish hole curvature, when well head lifts energetically, Multi-contact occurs for fishing string and internal surface of sleeve pipe, generates pure cunning in contact
The relative motion of 3 kinds of forms of dynamic, pure rolling and sliding and rolling etc., the lifting load of ground installation, which is mostly used in, overcomes salvaging
Frictional force between tubing string and internal surface of sleeve pipe, this part unfreezing power acts on casing, and cannot act directly on fish, real
It is very small that border acts on the unfreezing power on fish, and well is deeper, and hole curvature is bigger, and power transmission efficiency is lower.
(3) limitation of the fishing string intensity to unfreezing power: oil well is often 88.9mm oil pipe and 73mm oil pipe with flow string,
Deep-well, special wells are improved generally according to actual conditions using variable diameter, change grade of steel combined string with the safety of top tubing string
Coefficient.And 88.9ram oil pipe and 73mm tubing round thread minimum the surrender pulling force of grade of steel N80 is 707.22-921.04kN, simultaneously
The quality of fishing string itself will also consume part lifting power and cause the fatigue damage of fishing string when above proposing unfreezing energetically,
Often with fishing string pull-off or pulls off and come to an end, the operation that then carries out large repairs processing.
(3) security risk of fishing is larger, energetically lift unfreezing when, be easy to cause the pull-off of derrick guy wire earth anchor,
Oil pipe tripping spring hurts sb.'s feelings, rope job-hopping, the accidents such as derrick of falling greatly.
The difficult point that horizontal well is salvaged
(1) due to the effect of inclination section in horizontal well, the upper lifting force of well head can not be effectively passed in down-hole horizontal section, be gone out simultaneously
In the reason of the protection sleeve pipe, what is generallyd use in straight well above mentions energetically, is real in the fishing process technical level well such as activity unfreezing
Apply effect variation.
(2) also due to the influence of inclination section, well head torque can not also be effectively passed to down-hole horizontal section, therefore in level
It is relatively difficult that well implements the fishing process such as conventional set milling, back-off.
(3) general straight well sand control pipe length only has several meters to more than ten meters, and the horizontal perforated interval of horizontal well is long, therefore
Sand screen is also long, and general length is tens meters or more, and some is even up to 300 meters.Every sand screen has centralizer,
There is variable diameter at centralizer, which increases salvage difficulty.
Summary of the invention
The purpose of the present invention is to provide a kind of underground fishing type hydraulic booster release devices, to change the stress side of tubing string
Formula generates pulling force directly to underground fish in such a way that oil pipe is suppressed, and underground fish is made to generate movement, realizes that horizontal well is beaten
Fishing replaces heavy repair task to carry out unfreezing to realize with light maintenance routine work, solves oil-water well heavy repair task input cost height, beats
Fish out the problem of effect difference.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of underground fishing type hydraulic booster release device of the invention, including be from top to bottom threadedly coupled anchoring body 1, spline housing
The outer tube constituted with piston bush；The interior of the splined shaft being from top to bottom threadedly coupled, connection mandrel and piston composition is equipped in outer tube
Pipe；Piston is threadedly coupled through lower contact with fishing anchor is lifted.
In aforementioned device, the anchoring body is circular tube structure, and anchoring body upper end is equipped with the cone cell internal screw thread connecting with drilling rod,
Anchoring body lower end is equipped with the cone cell external screw thread connecting with spline housing；The peace that at least one circle is uniformly distributed along the circumference is equipped in the middle part of anchoring body 1
Hole is filled, is equipped with anchor fluke in mounting hole, anchor fluke is slidably connected with mounting hole；Anchor fluke top is equipped with anchor palm and groove；Outside mounting hole
Aperture is equipped with pressing plate groove, and pressing plate groove both ends are equipped with threaded hole, and threaded hole is fixedly connected with the pressing plate through screw；Bullet is equipped in groove
Spring.
In aforementioned device, the spline housing is circular tube structure；Spline set upper side is equipped with spiral shell in the cone cell connecting with anchoring body 1
Line, spline housing lower end are equipped with the external screw thread connecting with piston bush；Spline housing inner hole is rectangle spline hole, aperture under rectangle spline hole
Equipped with positive stop lug boss.
In aforementioned device, the piston bush is Circular Pipe structure；Piston set upper side is equipped with the internal screw thread connecting with spline housing；
Piston bush inner hole is three-level variable diameter hole, and the large aperture section in three-level variable diameter hole is equipped with relief hole.
In aforementioned device, the splined shaft is short circular tube structure；Splined shaft outer circle is equipped with rectangular spline；Rectangular spline and flower
Rectangle spline hole in key set is slidably connected；Splined shaft inner hole be second level variable diameter hole, second level variable diameter hole large aperture section be equipped with
The internal screw thread of mandrel connection, splined shaft upper orifice are horn mouth.
In aforementioned device, the mandrel is Circular Pipe structure；Mandrel upper end is equipped with the external screw thread with spline axis connection, mandrel
Lower end is equipped with the external screw thread connecting with piston.
In aforementioned device, the piston is Circular Pipe structure；Piston upper end is equipped with the internal screw thread that connect with mandrel, under piston
End is equipped with the external screw thread connecting with lower contact；Outside piston is equipped with piston boss, and the round tube below piston boss is equipped with pressure transmission
Hole.
In aforementioned device, the lower contact is short circular tube structure；Lower contact upper end is equipped with the internal screw thread connecting with piston, under
Connector lower end is equipped with the cone cell external screw thread connecting with handling fishing anchor；Lower contact inner hole be three-level variable diameter hole, three-level variable diameter hole it is big
Aperture section is equipped with the internal screw thread connecting with piston；The middle aperture section in three-level variable diameter hole is that conical transition is connect with small-bore section.
In aforementioned device, the top of the piston and lower contact is equipped with lock hole, is equipped with lock screw in lock hole.
In aforementioned device, the small-bore inner headed face and piston boss periphery in the piston bush three-level variable diameter hole are equipped with resistance to
Bull ring.
By adopting the above-described technical solution, combination is just compared with prior art, the present invention the present invention has structure simple
Prompt, the characteristics of being easily worked, the scope of application is big, safe and reliable.Such unfreezing mode can shift the upper lifting force of fish
It is applied on casing, does not increase the load of derrick, realize and replace heavy repair task with light maintenance routine work to carry out unfreezing work.
The stress rupture of fishing string can be prevented, the appearance of down hole problem is effectively prevented.Go out in drilling well, workover operation construction
Existing lock of tool drilling processing has good using effect.Especially for handling high angle hole, horizontal well tubing string sand card accident,
Its effect is more obvious, and economic benefit is more significant.
The present invention does not increase the load of derrick in the upper lifting force transferance to casing of fish, realizes normal with light maintenance
Rule operation replaces heavy repair task to carry out unfreezing work.Prevent the stress rupture of fishing string, effectively prevention down hole problem
Occur.Stuck-releasing device upper lifting force is big, and whole lifting forces are all acted directly on fish, is not required to by increasing to fishing string
Excessive pulling force, which is realized, salvages unfreezing, and oil pipe is solely subjected to the pulling force of ground hook.Reduce the shadow of flexible tubing string, friction and self weight etc.
It rings, the direct active force to fish is the several times of the direct lifting force of common workover rig or more.It acts on direct, active force and does not wane
Subtract, significant effect.The present invention, which multistage can couple, to be used, and is managed the interior 20MPa that pressurizes, can theoretically be realized above mentioning more than 1000 kN
Power, unfreezing power is big, is not required to dedicated salvaging drilling rod and large-tonnage derrick.Guarantee that fishing string internal channel is unimpeded, it can be according to live need
It wants, carries out direct circulation or reverse circulation washing top of fish at any time, fishing suppresses salvaging after obtaining fish again, first clears up top of fish in this way, prevent well
Sand, wax etc. salvage successfully the influence into fish operation, guarantee in cylinder.Using liquid operation, the reliability and construction of power transmission are improved
The stationarity of operation, and fishing string is fixed in casing can avoid unfreezing operation and cause the accident due to drawing energetically.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of anchoring body；
Fig. 3 is the structural schematic diagram of spline housing；
Fig. 4 is the structural schematic diagram of splined shaft；
Fig. 5 is the structural schematic diagram of lower contact；
Fig. 6 is the structural schematic diagram of piston；
Fig. 7 is the structural schematic diagram of piston bush.
In the figure, it is marked as 1- anchoring body, 11- mounting hole, 12- anchor fluke, 13- anchor palm, 14- groove, 15- pressing plate groove, 16- spiral shell
Pit, 17- screw, 18- pressing plate, 19- spring, 20- wear ring, 2- spline housing, 20- wear ring, 21- rectangle spline hole, 22- limit
Position boss, 23- hydraulic cavities, 3- piston bush, 31- relief hole, 4- splined shaft, 41- rectangular spline, 42- horn mouth, 5- mandrel, 6-
Piston, 61- piston boss, 62- pressure transmission hole, 7- lower contact, 71- steel ball, 8- lift fishing anchor, 9- lock hole, 10- lock screw.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
A kind of underground fishing type hydraulic booster release device of the invention, as shown in Figure 1, including from top to bottom being threadedly coupled
The outer tube that anchoring body 1, spline housing 2 and piston bush 3 are constituted；The splined shaft 4 being from top to bottom threadedly coupled, the connection heart are equipped in outer tube
The inner tube that axis 5 and piston 6 are constituted；6 lower end of piston is threadedly coupled through lower contact 7 with fishing anchor 8 is lifted.As shown in Fig. 2, anchoring body 1
For circular tube structure, 1 upper end of anchoring body is equipped with the cone cell internal screw thread connecting with drilling rod, and 1 lower end of anchoring body is equipped with and connect with spline housing 2
Cone cell external screw thread；It is equipped with the mounting hole 11 that at least one circle is uniformly distributed along the circumference in the middle part of anchoring body 1, is equipped with anchor fluke in mounting hole 11
12, anchor fluke 12 is slidably connected with mounting hole 11；12 top of anchor fluke is equipped with anchor palm 13 and groove 14；The outer aperture of mounting hole 11 is equipped with
Pressing plate groove 15,15 both ends of pressing plate groove are equipped with threaded hole 16, and threaded hole 16 is fixedly connected through screw 17 with pressing plate 18；It is set in groove 14
There is spring 19.As shown in figure 3, spline housing 2 is circular tube structure；2 upper end of spline housing is equipped with spiral shell in the cone cell connecting with anchoring body 1
Line, 2 lower end of spline housing are equipped with the external screw thread connecting with piston bush 3；2 inner hole of spline housing is rectangle spline hole 21, rectangle spline hole
21 lower apertures are equipped with positive stop lug boss 22.As shown in fig. 7, piston bush 3 is Circular Pipe structure；3 upper end of piston bush is equipped with and spline housing 2
The internal screw thread of connection；3 inner hole of piston bush is three-level variable diameter hole, and the large aperture section in three-level variable diameter hole is equipped with relief hole 31.Such as Fig. 4 institute
Show, splined shaft 4 is short circular tube structure；4 outer circle of splined shaft is equipped with rectangular spline 41；Rectangle in rectangular spline 41 and spline housing 2
Splined hole 21 is slidably connected；4 inner hole of splined shaft is second level variable diameter hole, and the large aperture section in second level variable diameter hole is equipped with to be connect with mandrel 5
Internal screw thread, 4 upper orifice of splined shaft be horn mouth 42.The mandrel 5 is Circular Pipe structure；5 upper end of mandrel is equipped with and splined shaft 4
The external screw thread of connection, 5 lower end of mandrel are equipped with the external screw thread connecting with piston 6.As shown in fig. 6, piston 6 is Circular Pipe structure；It is living
It fills in 6 upper ends and is equipped with the internal screw thread connecting with mandrel 5,6 lower end of piston is equipped with the external screw thread connecting with lower contact 7；6 outer circle of piston is set
There is piston boss 61, the round tube of 61 lower section of piston boss is equipped with pressure transmission hole 62.As shown in figure 5, lower contact 7 is short round tube knot
Structure；7 upper end of lower contact is equipped with the internal screw thread connecting with piston 6, and 7 lower end of lower contact is equipped with and lifts outside the cone cell that fishing anchor 8 is connect
Screw thread；7 inner hole of lower contact is three-level variable diameter hole, and the large aperture section in three-level variable diameter hole is equipped with the internal screw thread connecting with piston 6；Three-level
The middle aperture section in variable diameter hole is that conical transition is connect with small-bore section.9, device according to claim 1, it is characterised in that:
The top of the piston 6 and lower contact 7 is equipped with lock hole 9, is equipped with lock screw 10 in lock hole 9.10, according to claim
1 described device, it is characterised in that: the small-bore inner headed face and 61 periphery of piston boss in the 3 three-level variable diameter hole of piston bush are equal
Equipped with wear ring 20.
Embodiment
The invention mainly has anchoring body 1, spline housing 2, splined shaft 4, mandrel 5, piston bush 3, piston 6, lower contact 7, steel ball
The composition such as 13 and all kinds of sealing elements.
1 lower end of anchoring body of the present invention is connect with the internal screw thread of 2 upper end of spline housing；The upper end of spline housing 2 lower end and piston bush 3
Internal screw thread connection；.Installation is equipped with spring 19 there are six anchor fluke 12 in anchoring body 1 in the spring eye of anchor fluke 12, and anchor fluke 12 is logical
It crosses pressing plate 18 to be mounted in the mounting hole 11 of anchoring body 1, splined shaft 4 and spline housing 2 are rectangular spline cooperation, 4 lower end of splined shaft
Internal screw thread is connect with 5 upper external screw thread of mandrel, and 5 lower end external screw thread of mandrel is connect with 6 upper end internal screw thread of piston, outside 6 lower end of piston
Screw thread is connect with the internal screw thread of 7 upper end of lower contact；Piston 6 be the component with pressure transmission hole 62 and sealing element, using sealing element with
3 larger diameter internal bore of piston bush mutually seals, and the liquid of piston area is formed between 6 reduced diameter section of enlarged diameter section and piston of piston bush 3
Chamber 23 is pressed, single-stage lifting device is constituted.The present invention can also be connected using multiple pistons 6 and multiple piston bush 3, constituted multiple groups and mentioned
Rise device.For the series of lifting device depending on the pulling force that underground is needed to propose by card fish, every increase level-one lifting device can
Increase 200KN or so and promotes pulling force.Design can play close after having steel ball sealing structure, steel ball 71 to be pressurized at 7 inner hole of lower contact
Envelope effect.Relief hole 31 on piston bush 3 is located at the large aperture of piston bush 3, piston 6 is when the small-bore of piston bush 3 is slided,
Liquid in sealing state, when at the large aperture that the piston boss 61 of piston 6 is moved upward to piston bush 3, in hydraulic cavities 23
Body is released by the gap between piston boss 61 and large aperture inner wall from relief hole 31.
The device of the invention is suppressed ball seat three parts by casing anchor mechanism, force-increasing mechanism, level and is formed.Casing is anchored machine
The effect of structure is underground fishing strengthening device to be anchored on casing, and bear pulling force caused by reinforcement part.Force-increasing mechanism is
The component for directly generating pulling force, is mainly made of piston and piston bush, structure is simple.Force-increasing mechanism can be used as the case may be
Single-stage reinforcement can use plural serial stage structure reinforcement.It is underground fishing reinforcement in lower contact that level of the present invention, which suppresses ball seat,
One critical component of device, its structure snd size pass through optimization design, it is ensured that tool is suppressed close under horizontality
Envelope.
The course of work and principle of the invention is described as follows:
At work, the device of the invention upper end stacks, lower termination lifts fishing lance 8 to the present invention, transfers under the device of the invention
It puts to fish top, fishes out 8 engaging fish of lance by lifting, above propose drilling rod load certain load, making the device of the invention is in pull open
State.It is suppressed from drill pipe bore, at this point, steel ball 71 is crushed on the ball seat in lower contact 7, ball seat is made to be sealed in action of hydraulic force
Under, the anchor fluke 12 in anchoring body 1 overcomes the protruding internal surface of sleeve pipe that withstands on of the active force of spring 19 to form anchoring.For lower part handling
It fishes out lance 8 and fixed supporting point is provided.Continue to suppress, the fluid in tubing string is by the pressure transmission hole 62 on piston, into piston 6 and piston
In hydraulic cavities 23 between set 3, piston 6 is pushed to move up, a upward pulling force is generated to underground fish, then will by piston 6
Pulling force is transferred in lower contact 7, and the fishing lance 8 of the handling by being connected in lower contact 7 is applied on the underground fish by card.By
In the effect of anchoring device, the reaction force that piston 6 is generated passes through on spline housing 2 and the effect of piston bush 3 and casing, and for
The operating equipment on ground and tubing string more than anchoring device do not generate additional active force, when lifting device is drawn by lower contact 7
After dynamic underground fish rises a certain distance, when both piston 6 is displaced to the major diameter position of piston bush 3, pressure release in tubing string, anchor fluke
It is reduced in anchoring body under the action of the spring, at this point, above mentioning drilling rod, keeps underground fishing type hydraulic booster release device each section multiple
Position continues to repeat above procedure, until the complete unfreezing of trouble of lost tool in hole.
Claims (10)
1. a kind of underground fishing type hydraulic booster release device, including be from top to bottom threadedly coupled anchoring body (1), spline housing (2)
The outer tube constituted with piston bush (3)；It is characterized by: being equipped with the splined shaft (4) being from top to bottom threadedly coupled, mandrel in outer tube
(5) and piston (6) constitute inner tube；Piston (6) lower end is threadedly coupled through lower contact (7) with fishing anchor (8) are lifted.
2. underground fishing type hydraulic booster release device according to claim 1, it is characterised in that: the anchoring body (1) is circle
Pipe structure, anchoring body (1) upper end are equipped with the cone cell internal screw thread connecting with drilling rod, and anchoring body (1) lower end is equipped with spline housing (2) even
The cone cell external screw thread connect；It is equipped with the mounting hole (11) that at least one circle is uniformly distributed along the circumference in the middle part of anchoring body (1), is set in mounting hole (11)
Have anchor fluke (12), anchor fluke (12) is slidably connected with mounting hole (11)；Anchor fluke (12) top is equipped with anchor palm (13) and (14) groove；Peace
The outer aperture for filling hole (11) is equipped with pressing plate groove (15), and pressing plate groove (15) both ends are equipped with threaded hole (16), and threaded hole (16) is through screw
(17) it is fixedly connected with pressing plate (18)；Spring (19) are equipped in groove (14).
3. underground fishing type hydraulic booster release device according to claim 1, it is characterised in that: the spline housing (2) is circle
Pipe structure；Spline housing (2) upper end is equipped with the cone cell internal screw thread connecting with anchoring body (1), and spline housing (2) lower end is equipped with and piston bush
(3) external screw thread connected；Spline housing (2) inner hole is rectangle spline hole (21), and aperture is equipped with limit convex under rectangle spline hole (21)
Platform (22).
4. underground fishing type hydraulic booster release device according to claim 1, it is characterised in that: the piston bush (3) is length
Circular tube structure；Piston bush (3) upper end is equipped with the internal screw thread connecting with spline housing (2)；Piston bush (3) inner hole is three-level variable diameter hole,
The large aperture section in three-level variable diameter hole is equipped with relief hole (31).
5. underground fishing type hydraulic booster release device according to claim 1, it is characterised in that: the splined shaft (4) is short
Circular tube structure；Splined shaft (4) outer circle is equipped with rectangular spline (41)；Rectangle spline hole in rectangular spline (41) and spline housing (2)
(21) it is slidably connected；Splined shaft (4) inner hole is second level variable diameter hole, and the large aperture section in second level variable diameter hole is equipped with to be connect with mandrel (5)
Internal screw thread, splined shaft (4) upper orifice be horn mouth (42).
6. device according to claim 1, it is characterised in that: the mandrel (5) is Circular Pipe structure；Mandrel (5) upper end is set
There is the external screw thread connecting with splined shaft (4), mandrel (5) lower end is equipped with the external screw thread connecting with piston (6).
7. underground fishing type hydraulic booster release device according to claim 1, it is characterised in that: the piston (6) is oval
Pipe structure；Piston (6) upper end is equipped with the internal screw thread that connect with mandrel (5), and piston (6) lower end with lower contact (7) equipped with connecting
External screw thread；Piston (6) outer circle is equipped with piston boss (61), and the round tube below piston boss (61) is equipped with pressure transmission hole (62).
8. underground fishing type hydraulic booster release device according to claim 1, it is characterised in that: the lower contact (7) is short
Circular tube structure；Lower contact (7) upper end is equipped with the internal screw thread connecting with piston (6), and lower contact (7) lower end is equipped with and lifts fishing anchor
(8) the cone cell external screw thread connected；Lower contact (7) inner hole is three-level variable diameter hole, and the large aperture section in three-level variable diameter hole is equipped with and piston
(6) internal screw thread connected；The middle aperture section in three-level variable diameter hole is that conical transition is connect with small-bore section.
9. according to the underground fishing type hydraulic booster release device of claim 7 or 8, it is characterised in that: the piston (6) and under
The top of connector (7) is equipped with lock hole (9), is equipped with lock screw (10) in lock hole (9).
10. according to the underground fishing type hydraulic booster release device of claim 4 or 7, it is characterised in that: the piston bush (3)
The small-bore inner headed face and piston boss (61) periphery in three-level variable diameter hole are equipped with wear ring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811612539.7A CN109505551A (en) | 2018-12-27 | 2018-12-27 | A kind of underground fishing type hydraulic booster release device |
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| CN110566145A (en) * | 2019-10-19 | 2019-12-13 | 海塔石油科技有限公司 | Well workover salvage reinforcement auxiliary device |
| CN111911103A (en) * | 2020-08-11 | 2020-11-10 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
| CN112196484A (en) * | 2020-09-08 | 2021-01-08 | 中国石油天然气股份有限公司 | Hydraulic anchor releasing tool |
| CN112302545A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole small tubing device and tubing string |
| CN113685152A (en) * | 2021-09-17 | 2021-11-23 | 成都西南石大石油工程技术有限公司 | Hydraulic-based reinforcement upward-pulling and releasing device |
| CN113685152B (en) * | 2021-09-17 | 2024-06-11 | 成都西南石大石油工程技术有限公司 | Boosting up-pulling and unlocking device based on hydraulic pressure |
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| CN111911103B (en) * | 2020-08-11 | 2023-10-20 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
| CN112196484A (en) * | 2020-09-08 | 2021-01-08 | 中国石油天然气股份有限公司 | Hydraulic anchor releasing tool |
| CN112196484B (en) * | 2020-09-08 | 2022-04-26 | 中国石油天然气股份有限公司 | Hydraulic anchor releasing tool |
| CN113685152A (en) * | 2021-09-17 | 2021-11-23 | 成都西南石大石油工程技术有限公司 | Hydraulic-based reinforcement upward-pulling and releasing device |
| CN113685152B (en) * | 2021-09-17 | 2024-06-11 | 成都西南石大石油工程技术有限公司 | Boosting up-pulling and unlocking device based on hydraulic pressure |
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