CN104405319B - Continuous tube coupling stream hangs tubing string positioning anchor and its positioning anchorage method - Google Patents
Continuous tube coupling stream hangs tubing string positioning anchor and its positioning anchorage method Download PDFInfo
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- CN104405319B CN104405319B CN201410748417.6A CN201410748417A CN104405319B CN 104405319 B CN104405319 B CN 104405319B CN 201410748417 A CN201410748417 A CN 201410748417A CN 104405319 B CN104405319 B CN 104405319B
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- 230000008878 coupling Effects 0.000 title claims abstract description 75
- 238000010168 coupling process Methods 0.000 title claims abstract description 75
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 210000000078 claw Anatomy 0.000 claims description 57
- 239000000523 sample Substances 0.000 claims description 57
- 238000004519 manufacturing process Methods 0.000 claims description 24
- 239000004047 hole gas Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
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Abstract
The invention provides a kind of continuous tube coupling stream hangs tubing string positioning anchor and its positioning anchorage method, the positioning anchor includes body with through hole, the piston being axially and movably placed in through hole, at least two elastic tension mechanisms, moving part, and the position-limit mechanism for being overlapped on elastic tension mechanism edge；The arrangement holding tank equal with elastic tension mechanism quantity on the outer wall of body, each elastic tension mechanism are corresponded to respectively and are positioned in each holding tank；The bottom of holding tank opens up the radial direction through hole for placing moving part；Undergauge section is set on piston, and the inner of moving part is slidably abutting against the outer surface of undergauge section, and the outer end of moving part is resisted against in elastic tension mechanism；The undergauge section that moves vertically promotes moving part radially overhanging, elastic tension mechanism is extruded by the outer end of moving part to be radially expanded, until elastic tension mechanism and extraneous casing coupling seam grappling, provide larger frictional force in shaft bottom, it is achieved that the reliable grappling of tubing string.
Description
Technical field
The present invention relates to the underground work technical field such as oil, coal, natural gas, more particularly to a kind of for continuous pipe well
The positioning anchor of tubing string and its positioning anchorage method are hung in the throttling of lower gas production.
Background technology
Under continuous pipe well, operation technique has advantages below compared with conventional tubing string operation, mainly：1st, required corollary equipment
Quantity is few, and column apparatus move maneuverability；2nd, lower tubular column speed is played fast, operating efficiency is high；3rd, operating worker quantity required is few,
Some mining area working areas can be solved big, it is to avoid the shortage of manpower；4th, integrated cost is low.Under continuous pipe well, mining operations are related to recover the oil
And gas production.
In current down-hole gas production operation both at home and abroad, for preventing shaft bottom air pressure from producing top effect to tubing string, typically will
A set of single anchor is attached after configuration with down-hole gas production instrument, and being transferred in operation well together carries out gas production operation.
In prior art, frictional force of the tubing string in down-hole is inadequate, and bottom pressure is raised, and pushes up, easily cause impact failure on down-hole string,
Upper top effect also results in down the tubing string for entering and will be shifted up a longer segment distance.
The deeply conventional mode in down-hole string school has two kinds, one kind be using conventional logging cable magnetic orientation school depth, another kind of
It is that school depth is carried out using casing collar locator (CCL).According to conventional logging cable school depth, then can increase duty cycle.According to set
Pipe collar locator school depth, then need to reconnect a single casing collar locator (CCL) on working string, increased operation
The connection configuration complexity of tubing string.
Content of the invention
For solving above-mentioned technical problem, the present invention proposes a kind of continuous tube coupling stream and hangs tubing string positioning anchor in shaft bottom
There is provided larger frictional force, it is to avoid the upper top effect of shaft bottom air pressure causes down-hole string impact failure, is simultaneously achieved tubing string
Reliable grappling.The present invention also proposes the positioning anchorage method that a kind of continuous tube coupling stream hangs tubing string, continuously will be managed by the method
The grappling that tubing string positioning anchor forms larger frictional force in shaft bottom is hung in throttling.
A kind of continuous tube coupling stream of the present invention hangs tubing string positioning anchor, including the body with through hole, axially lives
The piston that is placed in the through hole dynamicly, at least two elastic tension mechanisms, there is the moving part of inner and outer end, and overlap joint
Position-limit mechanism at elastic tension mechanism edge；Arrange on the outer wall of the body and the elastic tension mechanism quantity phase
Deng holding tank, each described elastic tension mechanism respectively correspondence is positioned in each described holding tank；
The bottom of the holding tank opens up the radial direction through hole for placing the moving part；Undergauge section, institute are set on the piston
The inner for stating moving part is slidably abutting against the outer surface of the undergauge section, and the outer end of the moving part is resisted against the elasticity
In tight mechanism；The undergauge section that moves vertically promotes the moving part radially overhanging, by the outer end of the moving part
Extrude the elastic tension mechanism to be radially expanded, until the elastic tension mechanism and extraneous casing coupling seam grappling.
Used as a kind of enforceable mode, the position-limit mechanism includes top board and lower platen；The elastic tension mechanism
Including probe claw and arc elastic part, the probe claw is covered in the outside of the arc elastic part；The upper and lower ends of the probe claw are divided
Do not overlap with the top board, the lower platen, the middle part of the probe claw inner surface arranges locking boss；
Outwardly, the length direction of the arc elastic part is along the axial direction of the body for the arc opening of the arc elastic part
Arrangement；The moving part radially through hole to overhanging, the outer end of the moving part extrudes the middle part of the arc elastic part, described
The two ends of arc elastic part promote the probe claw to be radially expanded, until the arc elastic part is contacted with the locking boss.
Used as a kind of enforceable mode, the middle part of the probe claw outer surface is provided for and extraneous casing coupling seam
The inclined-plane boss of grappling.
Used as a kind of enforceable mode, the outer surface of the locking boss is sphere or cambered surface, the center of the cambered surface
Axle is parallel with the central shaft of the adjacent arc elastic part.
Used as a kind of enforceable mode, the inner of the moving part is resisted against the upper end of the undergauge section, the gearing
Part is radially overhanging, and the inner of the moving part is along the downwardly slip of the undergauge section.
Used as a kind of enforceable mode, the bottom of the holding tank arranges cushion pad, and the top of the cushion pad is higher than
The lower surface of the holding tank, the probe claw are resisted against on the cushion pad when inclining.
Used as a kind of enforceable mode, the outer surface of the undergauge section is terrace with edge face or round table surface.
Used as a kind of enforceable mode, the lower end of the body connects the lower contact with through hole, the piston
Lower end is placed in the through hole of the lower contact；
The through hole of the body is stepped hole, and the through hole lower end of the body has first step；The undergauge section
Lower section the shaft shoulder being closely slidably matched with the vertical walls of the first step is set, the lower surface of the shaft shoulder with described under
Joint against；
The piston outer wall below the shaft shoulder and piston is opened up between the through hole hole wall of the lower contact and push away
Dynamic chamber, arranges the pressure port of insertion on the through hole hole wall of the lower contact, the pressure port is connected with the piston push chamber.
As a kind of enforceable mode, on the piston, back-moving spring is set with, one end of the back-moving spring is resisted against
The upper surface of the shaft shoulder, its other end are resisted against on the horizontal wall surface of the first step.
As a kind of enforceable mode, the vertical section that end is sequentially connected and expanding is set in the top of the undergauge section
Section.
The present invention also proposes the positioning anchorage method that a kind of continuous tube coupling stream hangs tubing string, using described continuous tube coupling stream
Tubing string positioning anchor is hung, the positioning anchorage method that the continuous tube coupling stream hangs tubing string includes：
S10, the continuous tube coupling stream is hung tubing string positioning anchor and down-hole gas production instrument is transferred in sleeve pipe；
S20, the continuous tube coupling stream hang the elastic tension mechanism of tubing string positioning anchor and the contact internal walls of sleeve pipe；
S30, the down-hole gas production instrument start gas production operation, and shaft bottom air pressure rises, and air pressure promotes piston along the axle of body
Move upwards；
S40, the undergauge section of the piston promote moving part radially overhanging, and the outer end of the moving part extrudes the body
Holding tank in the elastic tension mechanism be radially expanded, position-limit mechanism be overlapped on the edge of the elastic tension mechanism with
Limit its position；
S50, the elastic tension mechanism are radially expanded, until the casing coupling seam grappling with the external world.
Used as a kind of enforceable mode, the S50 includes S51, and the probe claw outer surface of the elastic tension mechanism is squeezed
Enter described sleeve pipe box cupling seam, move in the piston continuation, promote the moving part to continue the extruding elastic tension mechanism
Arc elastic part, the arc elastic part promote the probe claw to continue to be radially expanded, until forming locking grappling.
As a kind of enforceable mode, there is S60 after the S50, the gas production end of job, shaft bottom air pressure reduce, institute
State piston to reset downwards, the moving part radially bounces back；Above carry continuous tube coupling stream and tubing string is hung, the probe claw is from described sleeve pipe
Extract in box cupling seam, release grappling.
The present invention is compared to the beneficial effect of prior art：Continuous tube coupling stream hangs tubing string positioning anchor can be in well
Bottom provides larger frictional force, it is to avoid down-hole string is impacted by the upper top effect of bottom pressure.Formed reliably in down-hole
Grappling, anchorage force overcome the upper top effect that down-hole pressure is produced to working string, move distance so as to limit in working string maximum.
Will be integrated for the deep two big functions of grappling and school, simplify the connection configuration of working string；Using arc elastic part
Coordinate with probe claw, probe claw can provide the signal for effectively crossing casing coupling, realize lower one-trip string, you can complete instrument and transfer simultaneously
Grappling, deep two purposes in tubing string school, save time than normal cable school depth mode and save trouble, shorten duty cycle.When probe claw is in sleeve pipe
Interior due to movement topple when, cushion pad can be supported to probe claw, it is to avoid probe claw be subject to tilting moment act on and fracture.
It is deep simultaneously that the positioning anchor is positioned school in shaft bottom by the positioning anchorage method for hanging tubing string by continuous tube coupling stream
Reliable grappling, larger frictional force prevent top effect from impacting, and damage tubing string；Anchorage force overcomes upper top to act on, so as to limit
Distance is moved in manufacturing tubing string maximum.
Description of the drawings
Fig. 1 hangs the revolved section schematic diagram of (installment state) before tubing string positioning anchor is gone into the well for continuous tube coupling stream；
Fig. 2 is that continuous tube coupling stream hangs revolved section schematic diagram when entering sleeve pipe under tubing string positioning anchor；
Fig. 3 hangs the revolved section schematic diagram of tubing string positioning anchor anchoring process (moving on piston) for continuous tube coupling stream；
Fig. 4 is the revolved section schematic diagram that continuous tube coupling stream hangs that tubing string positions anchor anchor sleeve seam.
Reference：
The continuous tube coupling stream of 1- hangs tubing string positioning anchor；
10- body；110- holding tank；120- cushion pad；130- first step；
20- piston；210- undergauge section；The 220- shaft shoulder；
30- elastic tension mechanism；
310- probe claw；312- locks boss；314- inclined-plane boss；320- arc elastic part；
410- radial direction through hole；420- moving part；
50- position-limit mechanism；510- top board；520- lower platen；
60- lower contact；610- piston push chamber；620- pressure port；
70- back-moving spring；
2- sleeve pipe.
Specific embodiment
Below in conjunction with accompanying drawing, the above-mentioned He other technical characteristic of the present invention and advantage are clearly and completely described,
Obviously, described embodiment is only the section Example of the present invention, rather than whole embodiments.
Refer to shown in Fig. 1, which is that continuous tube coupling stream hangs tubing string positioning installment state of the anchor 1 before going into the well, even
Continuous tube coupling stream hangs tubing string positioning anchor 1 includes body 10 with through hole, the work being axially and movably placed in through hole
20, at least two elastic tension mechanisms 30 of plug, moving part 420 and position-limit mechanism 50 with inner and outer end, position-limit mechanism 50
30 edge of elastic tension mechanism is overlapped on for limiting its position.
The arrangement holding tank 110 equal with elastic tension mechanism 30 quantity, each elastic tension machine on the outer wall of body 10
Correspondence is positioned in each holding tank 110 structure 30 respectively.The bottom of holding tank 110 opens up the radial direction through hole for placing moving part 420
410.More preferably, the quantity of elastic tension mechanism 30 and holding tank 110 is three, and is circumferentially evenly arranged.In the present embodiment,
Moving part 420 is shaft-like.
Undergauge section 210 is set on piston 20, the inner of moving part 420 is slidably abutting against the outer surface of undergauge section 210, even
The outer end of moving part 420 is resisted against in elastic tension mechanism 30.The undergauge section 210 that moves vertically promotes moving part 420 radially
Overhanging, elastic tension mechanism 30 is extruded by the outer end of moving part 420 and is radially expanded, until elastic tension mechanism 30 and the external world
Casing coupling seam grappling.
Continuous tube coupling stream hangs tubing string positioning anchor 1 and is mainly used in aiding in continuous pipe downhole tool to complete gas production operation,
When tubing string downhole choke is produced, bottom pressure raises to down-hole string the top effect that produces, and the invention can provide larger in shaft bottom
Frictional force, it is to avoid down-hole string by bottom pressure upper top effect impact.Continuous tube coupling stream is made to hang tubing string during decentralization
Positioning anchor 1 be located at box cupling lower 1 meter～2 meters, during the gas production of down-hole on push up a segment distance after, by continuous tube coupling stream hang tubing string
Positioning anchor 1 makes tubing string reliably grappling, and anchorage force overcomes the upper top effect that down-hole pressure is produced to working string, so as to limit
Distance is moved in manufacturing tubing string maximum.
Used as a kind of enforceable mode, position-limit mechanism 50 includes top board 510 and lower platen 520；Elastic tension mechanism
30 include probe claw 310 and arc elastic part 320.Probe claw 310 is covered in the outside of arc elastic part 320；Up and down the two of probe claw 310
End is overlapped with top board 510, lower platen 520 respectively, and the middle part of 310 inner surface of probe claw arranges locking boss 312.Arc elastic part
Outwardly, the length direction of arc elastic part 320 is along the axial arranged of body 10 for 320 arc opening.
The undergauge section 210 moved vertically promote moving part 420 radially through hole 410 to overhanging, the outer end of moving part 420
The middle part of extruding arc elastic part 320, the two ends of arc elastic part 320 promote probe claw 310 to be radially expanded, until arc elastic part
320 are contacted with locking boss 312.Refer to shown in Fig. 2, which is to enter sleeve pipe 2 under continuous tube coupling stream suspension tubing string positioning anchor 1
State, now, the two ends of arc elastic part 320 abut to 310 inner surface of probe claw, and arc elastic part 320 has not occurred deformation.
Refer to shown in Fig. 3, in the present embodiment, the inner of moving part 420 is spherical, and spherical end face is conducive to reducing company
Resistance when moving part 420 is slided in undergauge section 210, makes motion process smooth；The outer end of moving part 420 is plane, and plane has
Strength is reliably transmitted to two ends beneficial to arc elastic part 320 when stress is extruded.More preferably, can be by arc elastic part 320
Middle part be fixedly attached to the outer end of moving part 420 by welding or the mode such as bolt, it is to avoid arc elastic part 320 is in holding tank
Upper-lower position vibration in 110.
As a kind of enforceable mode, refer to shown in Fig. 4, the middle part of 310 outer surface of probe claw is provided for and the external world
Casing coupling seam grappling inclined-plane boss 314, when inclined-plane boss 314 is through casing coupling seam, inclined-plane boss 314 squeeze
Enter casing coupling seam, piston 20 continues to rise the promotion extruding arc elastic of moving part 420 part 320, until moving part 420 is interior
End slides into the lower end end points of undergauge section 210, reaches the extreme position being radially expanded.More preferably, the side of inclined-plane boss 314 with
Angle between 310 outer surface of probe claw is more than the angle between 90 degree, and top side and 310 outer surface of probe claw and is less than lower side
Angle between face and 310 outer surface of probe claw.
Further, the outer surface for locking boss 312 on 310 inner surface of probe claw is sphere or cambered surface, round and smooth contact surface
Avoid excessive with the local pressure of arc elastic part 320 during arc elastic 320 rigid contact of part, cause 320 folding of arc elastic part
Disconnected, the central shaft of cambered surface is parallel with the central shaft of adjacent arc elastic part 320, makes the circumferentially uniform force of probe claw 310.
As a kind of enforceable mode, during initial mounting state, the inner of moving part 420 is resisted against undergauge section 210
Upper end, when down-hole gas production, shaft bottom air pressure rises, and moving part 420 is radially overhanging, and the inner of moving part 420 is along undergauge section 210
Downwardly slip.
Used as a kind of enforceable mode, the bottom of holding tank 110 arranges cushion pad 120, and the top of cushion pad 120 is higher than
The lower surface of holding tank 110, probe claw 310 are resisted against on cushion pad 120 when inclining, it is to avoid probe claw 310 is directly knocked with body 10
Touch and damage.More preferably, cushion pad 120 is arranged on the lower end of probe claw 310, also cushion pad 120 can be arranged on probe claw 310
Upper end near.In the present embodiment, cushion pad 120 is the pad pin being diametrically mounted in body 10.When probe claw 310 is in sleeve pipe 2
Interior due to movement topple when, pad pin probe claw 310 can be supported, it is to avoid probe claw 310 be subject to tilting moment act on and roll over
Disconnected.
Used as a kind of enforceable mode, the outer surface of undergauge section 210 is terrace with edge face or round table surface.When undergauge section 210
When outer surface is terrace with edge face, the rib number in terrace with edge face is consistent with the quantity of holding tank 110, the moving part 420 in each holding tank 110
Slide on each side in terrace with edge face.
Further, the lower end of body 10 connects the lower contact 60 with through hole, and the lower end of piston 20 is placed in lower contact
In 60 through hole.The through hole of body 10 is stepped hole, and the through hole lower end of body 10 has first step 130；Undergauge section
210 lower section is arranged and the close-fitting shaft shoulder 220 of the vertical walls of first step 130, and the shaft shoulder 220 can be in first step 130
Interior slip, the lower surface of the shaft shoulder 220 and lower contact 60 against.More preferably, first step 130 is located at the lower section of holding tank 110.
Piston push chamber is opened up between 20 outer wall of piston and the through hole hole wall of lower contact 60 of 220 lower section of the shaft shoulder
610, the pressure port 620 of insertion is set on the through hole hole wall of lower contact 60, pressure port 620 is connected with piston push chamber 610.This
In embodiment, during original state, the lower surface of the shaft shoulder 220 is with lower contact 60 against, when starting gas production, shaft bottom air pressure is raised, air pressure
The lower surface of the shaft shoulder 220, the lower surface of the shaft shoulder 220 and 60 points of lower contact is acted on by pressure port 620, piston push chamber 610
From making piston 20 move vertically.
As a kind of enforceable mode, on piston 20, back-moving spring 70 is set with, one end of back-moving spring 70 is resisted against axle
The upper surface of shoulder 220, its other end are resisted against on the horizontal wall surface of first step 130, and during original state, back-moving spring is also unchanged
Shape.
Ground coiled tubing unit will configure complete down-hole gas production tubing string and continuous tube coupling stream hangs tubing string and positions grappling
Down-hole transferred to together by device 1, the inclined-plane boss 314 on probe claw 310 under the resilient force of arc elastic part 320, probe claw 310
Contact condition is always maintained at the inwall of sleeve pipe 2, is often connect by a sleeve pipe when continuous tube coupling stream hangs tubing string positioning anchor 1
Hoop, probe claw 310 are contacted with the casing coupling seam on sleeve pipe 2, and casing coupling seam can produce a change to probe claw 310
Up or down and the axial force consistent with the axis direction of sleeve pipe 2.As probe claw 310 is arranged on continuous tube coupling stream suspended tubes
On post positioning anchor 1, and because continuous tube coupling stream is hung between tubing string positioning anchor 1 and working string as being rigidly connected, institute
Tubing string positioning anchor 1 can be hung by continuous tube coupling stream with this axial force for changing to be delivered on whole working string, ground
Face monitoring system can record the axial force change produced on working string, so as to calculating down the depth of sleeve pipe 2, determine and make
Industry tubing string carries out underground location school depth, using casing coupling positioning mode than normal cable school depth side in the depth location of down-hole
Formula saves time and saves trouble, and shortens duty cycle.
Existing anchor can not realize the deep two kinds of functions of grappling and positioning school simultaneously, working string when causing underground mining
Connection complicated.Continuous tube coupling stream hangs tubing string positioning anchor 1 will be integrated for the deep two big functions of grappling and positioning school, simplifies
The connection configuration of working string；Probe claw 310 is coordinated using arc elastic part 320, makes continuous tube coupling stream hang tubing string positioning anchor
Determine device 1 and the effective pressure signal for crossing casing coupling can be provided to ground detection system, realize lower one-trip string, you can complete work
Tool decentralization grappling, deep two purposes in tubing string school.
In the present embodiment, the through hole upper end of body 10 has second step, and the area of section of second step diminishes, in well
When spirit presses through big, so that the piston 20 of rising is resisted against on the horizontal plane of second step, prevent the distance that moves on piston 20 excessive,
So that successfully can not reset.
A kind of continuous tube coupling stream of the present invention hangs the positioning anchorage method of tubing string, hangs tubing string using continuous tube coupling stream fixed
Position anchor 1, continuous tube coupling stream hangs the positioning anchorage method of tubing string to be included：
S10, continuous tube coupling stream is hung tubing string positioning anchor 1 and down-hole gas production instrument is transferred in sleeve pipe 2；
S20, continuous tube coupling stream hang the elastic tension mechanism 30 of tubing string positioning anchor 1 and the contact internal walls of sleeve pipe 2；
S30, down-hole gas production instrument start gas production operation, and shaft bottom air pressure rises, and air pressure promotes piston 20 along the axle of body 10
Move upwards；
S40, the undergauge section 210 of piston 20 promote moving part 420 radially overhanging, the outer end extrusion body of moving part 420
Elastic tension mechanism 30 in 10 holding tank 110 is radially expanded, and position-limit mechanism 50 is overlapped on the side of elastic tension mechanism 30
Edge is to limit its position；
S50, elastic tension mechanism 30 are radially expanded, until the casing coupling seam grappling with the external world.
Used as a kind of enforceable mode, S50 includes S51, and 310 outer surface of probe claw of elastic tension mechanism 30 gets into set
Pipe box cupling seam, moves in the continuation of piston 20, promotes moving part to continue the arc elastic part 320 of extruding elastic tension mechanism 30, arc
Shape elastic component 320 promotes probe claw 310 to continue to be radially expanded, until locking grappling is formed, the now inner slip of moving part 420
To the lower end end points of undergauge section 210, the extreme position being radially expanded is reached, as shown in Figure 4.
As a kind of enforceable mode, there is S60 after S50, the gas production end of job, shaft bottom air pressure reduce, piston 20
Reset downwards, moving part 420 is radially bounced back under the elastic reaction of arc elastic part 320, and arc elastic part 320 no longer exerts a force
In probe claw 310, in the present embodiment, now arc elastic part 320 is separated with the inner surface of probe claw 310；Above carry continuous tube coupling stream to hang
Hanging tube post, probe claw 310 are extracted from casing coupling seam, are released grappling, are returned to initial installment state, complete a job
Cycle.
More preferably, during piston 20 resets downwards, excessive for preventing piston 20 from moving down, in undergauge section 210
Top the vertical section that is sequentially connected of end and extension diameter section are set, the external diameter of vertical section is equal with the external diameter of undergauge section upper end.Perpendicular
Straight section and extension diameter section are used for the downward motion of damper piston 20.When moving part 420 is moved in vertical section, will not be radially outer
Stretch, elastic tension mechanism 30 will not be extruded.
Under normal circumstances, by back-moving spring 70, or release pitching makes piston 20 reset to set up tubing string internal pressure, from
And can upper lifting pipe post, normal rise, the pulling force for above carrying ensures to extract by need to only guaranteeing normally to cross box cupling.
Particular embodiments described above, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, it will be appreciated that the foregoing is only the specific embodiment of the present invention, the protection being not intended to limit the present invention
Scope.Particularly point out, to those skilled in the art, all within the spirit and principles in the present invention, done any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of continuous tube coupling stream hangs tubing string positioning anchor, it is characterised in that the continuous tube coupling stream hangs tubing string positioning
Anchor includes body with through hole, the piston being axially and movably placed in the through hole, at least two elastic tensions
Mechanism, the moving part with inner and outer end, and the position-limit mechanism for being overlapped on elastic tension mechanism edge；The body
The holding tank equal with elastic tension mechanism quantity is arranged on outer wall, and each described elastic tension mechanism is corresponding respectively to place
In each described holding tank；
The bottom of the holding tank opens up the radial direction through hole for placing the moving part；Undergauge section, the company are set on the piston
The inner of moving part is slidably abutting against the outer surface of the undergauge section, and the outer end of the moving part is resisted against the elastic tension machine
On structure；The undergauge section that moves vertically promotes the moving part radially overhanging, is extruded by the outer end of the moving part
The elastic tension mechanism is radially expanded, until the elastic tension mechanism and extraneous casing coupling seam grappling；
The position-limit mechanism includes top board and lower platen；The elastic tension mechanism includes probe claw and arc elastic part, described
Probe claw is covered in the outside of the arc elastic part；The upper and lower ends of the probe claw respectively with the top board, the lower platen
Overlap joint, the middle part of the probe claw inner surface arrange locking boss；
Outwardly, the length direction of the arc elastic part is along the axial cloth of the body for the arc opening of the arc elastic part
Put；The moving part radially through hole to overhanging, the outer end of the moving part extrudes the middle part of the arc elastic part, the arc
The two ends of shape elastic component promote the probe claw to be radially expanded, until the arc elastic part is contacted with the locking boss；Using
The arc elastic part coordinates the probe claw, can provide the effective pressure signal for crossing casing coupling to ground detection system.
2. continuous tube coupling stream according to claim 1 hangs tubing string positioning anchor, it is characterised in that the probe claw appearance
The middle part in face is provided for the inclined-plane boss with extraneous casing coupling seam grappling.
3. continuous tube coupling stream according to claim 1 hangs tubing string positioning anchor, it is characterised in that the locking boss
Outer surface be sphere or cambered surface, the central shaft of the cambered surface is parallel with the central shaft of the adjacent arc elastic part.
4. the continuous tube coupling stream according to any one of claims 1 to 3 hangs tubing string positioning anchor, it is characterised in that institute
The inner for stating moving part is resisted against the upper end of the undergauge section, and the moving part is radially overhanging, the inner edge of the moving part
The downwardly slip of the undergauge section.
5. continuous tube coupling stream according to claim 4 hangs tubing string positioning anchor, it is characterised in that the holding tank
Bottom arranges cushion pad, and the top of the cushion pad is resisted against during the probe claw inclination higher than the lower surface of the holding tank
On the cushion pad.
6. continuous tube coupling stream according to claim 1 hangs tubing string positioning anchor, it is characterised in that the undergauge section
Outer surface is terrace with edge face or round table surface.
7. continuous tube coupling stream according to claim 1 hangs tubing string positioning anchor, it is characterised in that under the body
Lower contact of the end connection with through hole, the lower end of the piston is placed in the through hole of the lower contact；
The through hole of the body is stepped hole, and the through hole lower end of the body has first step；Under the undergauge section
Side arranges the shaft shoulder being closely slidably matched with the vertical walls of the first step, the lower surface of the shaft shoulder and the lower contact
Against；
The piston outer wall below the shaft shoulder and piston push chamber is opened up between the through hole hole wall of the lower contact,
The pressure port of insertion is set on the through hole hole wall of the lower contact, and the pressure port is connected with the piston push chamber.
8. continuous tube coupling stream according to claim 7 hangs tubing string positioning anchor, it is characterised in that cover on the piston
Dress back-moving spring, one end of the back-moving spring are resisted against the upper surface of the shaft shoulder, and its other end is resisted against the First
On the horizontal wall surface of rank.
9. continuous tube coupling stream according to claim 1 hangs tubing string positioning anchor, it is characterised in that in the undergauge section
Top the vertical section that is sequentially connected of end and extension diameter section are set.
10. a kind of continuous tube coupling stream hangs the positioning anchorage method of tubing string, using the company as described in any one of claim 1 to 9
Continuous tube coupling stream hangs tubing string positioning anchor, it is characterised in that the continuous tube coupling stream hangs the positioning anchorage method bag of tubing string
Include：
S10, the continuous tube coupling stream is hung tubing string positioning anchor and down-hole gas production instrument is transferred in sleeve pipe；
S20, the continuous tube coupling stream hang the elastic tension mechanism of tubing string positioning anchor and the contact internal walls of sleeve pipe；
S30, the down-hole gas production instrument start gas production operation, and shaft bottom air pressure rises, and air pressure promotes piston in the axial direction of body
Move；
S40, the undergauge section of the piston promote moving part radially overhanging, and the outer end of the moving part extrudes the appearance of the body
The elastic tension mechanism received in groove is radially expanded, and position-limit mechanism is overlapped on the edge of the elastic tension mechanism to limit
Its position；
S50, the elastic tension mechanism are radially expanded, until the casing coupling seam grappling with the external world.
11. continuous tube coupling streams according to claim 10 hang the positioning anchorage method of tubing string, it is characterised in that described
S50 includes S51, and the probe claw outer surface of the elastic tension mechanism gets into described sleeve pipe box cupling seam, in the piston continuation
Move, promote the moving part to continue the arc elastic part of the extruding elastic tension mechanism, the arc elastic part promotes described
Probe claw continues to be radially expanded, until forming locking grappling.
12. continuous tube coupling streams according to claim 11 hang the positioning anchorage method of tubing string, it is characterised in that described
There is S60 after S50, the gas production end of job, shaft bottom air pressure reduce, and the piston resets downwards, and the moving part radially bounces back；
Above carry continuous tube coupling stream and tubing string is hung, the probe claw is extracted from described sleeve pipe box cupling seam, release grappling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748417.6A CN104405319B (en) | 2014-12-09 | 2014-12-09 | Continuous tube coupling stream hangs tubing string positioning anchor and its positioning anchorage method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748417.6A CN104405319B (en) | 2014-12-09 | 2014-12-09 | Continuous tube coupling stream hangs tubing string positioning anchor and its positioning anchorage method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405319A CN104405319A (en) | 2015-03-11 |
| CN104405319B true CN104405319B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410748417.6A Active CN104405319B (en) | 2014-12-09 | 2014-12-09 | Continuous tube coupling stream hangs tubing string positioning anchor and its positioning anchorage method |
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| CN (1) | CN104405319B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285643B (en) * | 2015-06-01 | 2019-06-11 | 中国石油天然气股份有限公司 | Casing coupling positioner and casing coupling positioning method |
| CN107514239B (en) * | 2017-07-19 | 2019-11-08 | 中国石油天然气股份有限公司 | Positioning mechanism, positioning device and positioning pipe column |
| CN107313738B (en) | 2017-09-06 | 2019-12-20 | 刘书豪 | Fluid separation device, well structure, and method for producing oil or natural gas |
| CN108005588A (en) * | 2017-11-02 | 2018-05-08 | 中国石油集团渤海钻探工程有限公司 | A kind of rotatable mechanical casing collar locator (CCL) |
| CN110939400A (en) * | 2018-09-25 | 2020-03-31 | 中国煤炭地质总局勘查研究总院 | Differential pressure hydraulic anchor |
| CN109915053B (en) * | 2019-04-15 | 2024-08-13 | 成都百胜野牛科技有限公司 | Clamping device, downhole tool and downhole release structure |
| CN111048365B (en) * | 2019-11-26 | 2021-10-22 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Quick locking and tripping device for repulsion mechanism |
| CN116446827B (en) * | 2023-06-16 | 2024-06-28 | 山东普瑞思德石油技术有限公司 | Self-adjustable bottom filling tool |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4007904A (en) * | 1975-03-28 | 1977-02-15 | Cameron Iron Works, Inc. | Annular blowout preventer |
| US6729399B2 (en) * | 2001-11-26 | 2004-05-04 | Schlumberger Technology Corporation | Method and apparatus for determining reservoir characteristics |
| CN1676865A (en) * | 2005-05-12 | 2005-10-05 | 刘志洲 | Oil well casing reconditioning tool |
| CN102337860B (en) * | 2010-09-03 | 2014-04-16 | 中国石油大学(北京) | Packer |
| CN202483546U (en) * | 2011-09-16 | 2012-10-10 | 西南石油大学 | Fracture sliding sleeve assembly capable of being opened and closed |
| CN202832325U (en) * | 2012-10-28 | 2013-03-27 | 大庆泰泽机械加工有限公司 | Hydraulic type oil pipe anchor device of oil pumping machine well |
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