CN103850676B - Novel casing coupling positioner for coiled tubing - Google Patents
Novel casing coupling positioner for coiled tubing Download PDFInfo
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- CN103850676B CN103850676B CN201210502372.5A CN201210502372A CN103850676B CN 103850676 B CN103850676 B CN 103850676B CN 201210502372 A CN201210502372 A CN 201210502372A CN 103850676 B CN103850676 B CN 103850676B
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- 230000008878 coupling Effects 0.000 title abstract description 6
- 238000010168 coupling process Methods 0.000 title abstract description 6
- 238000005859 coupling reaction Methods 0.000 title abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims description 63
- 230000008859 change Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 8
- 238000003825 pressing Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a novel sleeve coupling positioner for a continuous oil pipe, which relates to the field of oil-gas well downhole tools for oil development, and comprises a body, an upper cover cap, a positioning sheet, a spiral spring and a lower cover cap, wherein the body is in a hollow cylinder shape, the outer wall of the body is provided with an axial groove, the positioning sheet is embedded in the axial groove, at least three spiral springs which are uniformly distributed are arranged between the positioning sheet and the axial groove, the upper cover cap and the lower cover cap are fixed on the body, and the upper cover cap and the lower cover cap respectively block the positioning sheet. The invention can realize accurate positioning in the casing, has obvious and uniform change of the suspended weight when passing through the position of the coupling, and is very suitable for the accurate positioning of continuous oil pipe operation in the non-airtight casing.
Description
Technical field
The present invention relates to oil development Oil/gas Well downhole tool field, a kind of coiled tubing is specifically related to new
Casing collar locator (CCL), the casing collar locator (CCL) can realize underground continuous oil pipe being accurately positioned in sleeve pipe, it is adaptable to
Need pinpoint thin interbed pressing crack construction.
Background technology
There are in the vertical multiple payzones in most domestic oil-gas reservoir, and mostly relatively be thin interbed, have even up to 5 layers with
On, in order to improve single well productivity and oil gas field ultimate recovery, after oil gas well drilling construction is completed, implementing fracture acidizing is
Realize the important modification measures of well production increment.And coiled tubing and its instrument depth of setting must be entered in this transformation process
Row is more accurately controlled, and fracture acidizing effect can just be optimal.
At present, the depth counter that continuous oil pipe operation equipment is carried can not meet the pinpoint work of this kind of needs
Industry, the error that its 1000m is produced is about 2m or so, it is impossible to meet job requirements.
Authorization Notice No. is 202117663U, and authorized announcement date is that the Chinese patent literature on January 18th, 2012 is disclosed
A kind of casing collar locator (CCL), is applied to oil field well coiled tubing and determines casing collar location.It is uniform on the outer wall of body
Three axial notches are distributed with, in each axial notch of body a rectangle positioning wedged block is embedded with；Body each
Compression spring is arranged at the bottom of groove, and the outer surface of positioning wedged block is circular arc, outwardly convex on positioning wedged block outer surface
Arc convex, the upper and lower ends of arc convex have inclined-plane；The fixture block pressure in the groove of body and on the upper end of positioning wedged block has
Plate, upper pin is fixed on upper fixture block pressing plate in the groove of body；Under having in the groove of body and in the lower end of positioning wedged block
Fixture block pressing plate, lower pin is fixed on lower fixture block pressing plate in the groove of body；Upper fixture block pressing plate and lower fixture block pressing plate are blocked respectively
Positioning wedged block two ends.Effect is：Many thin layer Oil/gas Well construction operations can be carried out, and judges the position of box cupling.Using frame for movement
Realization is accurately positioned, simpler than electronics collar locator, durable, adapts to complicated severe underground construction environment.
But the prior art with above-mentioned patent document as representative, it yet suffers from following shortcoming;
1st, in above-mentioned patent document, it is provided only with a spring between the positioning wedged block and groove, such version,
Be equivalent to the strong point of lever at spring, positioning wedged block is equivalent to a lever, and coiled tubing enter under process and
During above carrying coiled tubing, the upper/lower terminal of positioning wedged block can distinguish first stress, the locator card under the support of a spring
The two ends unbalance stress of block, one end of positioning wedged block will upwarp, and the other end will sink, in addition occur positioning wedged block with it is recessed
The end portion of the relative side of groove is directly born against on groove, so that the suspending weight generation for entering under coiled tubing and above carrying is non-
Often significantly change, stationarity is also affected, and the locating effect for eventually resulting in locator is had a greatly reduced quality.
2nd, its upper and lower fixture block is that direct via pins are fixed in the groove of body, is hanging between upper and lower fixture block and groove
, the hanging place is to leave the free gap driven for positioning wedged block Jing telescopic springs, and the end of upper and lower fixture block does not have
Fix with body, such version, on the one hand, due to the hanging needs for arranging so that upper and lower fixture block consolidating in a groove
It is fixed not firm, on the other hand, because one end of upper and lower fixture block needs to receive the extruding force of positioning wedged block for a long time, and upper and lower fixture block
The other end is not affixed on body again, therefore, inherently fix illusive upper and lower fixture block and be easier stress and be deformed,
Just into the central pivot point of lever at the pin of upper and lower fixture block, final positioning wedged block can deviate from the fixation of upper and lower fixture block, cause
Life of product is substantially reduced, this kind of version, cannot be widely popularized at all in real process and be used.
The content of the invention
To solve above-mentioned technical problem, the present invention proposes a kind of coiled tubing new casing collar locator, this
It is bright to realize being accurately positioned in sleeve pipe, and can change substantially and uniform by suspending weight when through collar location, it is suitable for very much
In being accurately positioned for the continuous oil pipe operation in non-hermetically sealed big envelope pipe.
The present invention using following technical proposals by being realized：
A kind of coiled tubing new casing collar locator, including body, upper cap, spacer, helical spring is with
Block, body is hollow cylindrical, it is characterised in that：Axial notch is provided with the body outer wall, in axial notch
The spacer is embedded with, at least three equally distributed spiral bullets are provided between the spacer and axial notch
Spring, the upper cap and lower cover cap are fixed on body, and upper cap and lower cover cap block respectively the spacer.
In three helical springs, the stiffness factor of the helical spring at both ends is more than the stiffness system of the helical spring of pars intermedia
Number.
In three helical springs, near that one end of upper cap helical spring stiffness factor more than near lower cover cap that
The stiffness factor of the helical spring at end.
The helical spring is four, and the stiffness factor of middle two springs is consistent, the stiffness of the helical spring at both ends
Coefficient is more than near the stiffness factor of the helical spring of that one end of upper cap and leans on more than the stiffness factor of the helical spring of pars intermedia
The stiffness factor of the helical spring of nearly that one end of lower cover cap.
The guide slot for accommodating the helical spring is provided with the spacer.
The upper cap and lower cover cap are that Jing trip bolts are fixed on body, and upper cap and lower cover cap are close to described
On body, upper cap and lower cover cap have a dip section for extending into axial notch, and the dip section is used to block the positioning
Piece.
The outer surface of the spacer is provided with the projection in circular arc, and the raised upper end near that one end of upper cap is
Ramp, the raised lower end near that one end of lower cover cap is lower inclined plane, and the angle between ramp and spacer surface is less than
Angle between lower inclined plane and spacer surface.
The number of the axial notch is equally distributed four along body outer wall.
Compared with prior art, what the present invention was reached has the beneficial effect that：
1st, in the present invention, adopt and " at least three equally distributed institutes are provided between the spacer and axial notch
Helical spring is stated, the upper cap and lower cover cap are fixed on body, and upper cap and lower cover cap block respectively the spacer "
Mode, for prior art, three helical springs are uniformly distributed, and in stress, the two ends of spacer arrange each
The stress in place will be very uniform, and during so as to entering instantly or above carry coiled tubing, the suspending weight of coiled tubing will not be produced significantly
Change, stationarity is very good, enhances locator pinpoint effect in sleeve pipe.
2nd, in the present invention, using " in three helical springs, the stiffness factor of the helical spring at both ends is more than pars intermedia
Mode as the stiffness factor of helical spring ", in actual use, either sleeve pipe to enter still above put forward process under
In, when sleeve pipe just with projection contacts when, at first stress be spacer upper end or lower end, and middle part stress is less, and
In the present invention, because the stiffness factor of the helical spring at both ends is more than the stiffness factor of pars intermedia, so, the two ends of spacer
The helical spring in portion can greatly offset the adverse effect by larger extruding force at both ends, whole so as to preferably maintain
The stress equalization of individual spacer, the suspending weight for better ensuring that coiled tubing does not produce significantly change, and it is fixed to further enhancing
Position device pinpoint effect in sleeve pipe.
3rd, the present invention in, using " near that one end of upper cap helical spring stiffness factor more than near lower cover cap that
Mode as the stiffness factor of the helical spring of one end ", with " angle between ramp and spacer surface is less than lower inclined plane
With the angle between spacer surface " structure be engaged, sufficiently consider objective reality, the mitre of lower inclined plane with it is less
The helical spring of stiffness factor coordinates coiled tubing further smoothly can be entered down during entering under, the little angle of ramp with
The helical spring of larger stiffness factor coordinates so that coiled tubing can bear bigger bearing capacity during upper carrying.
4th, in the present invention, using side as " guide slot for accommodating the helical spring is provided with the spacer "
Formula, when spacer in axial notch along the radial floating of body when, the telescopic location of helical spring is due to the orientation of guide slot
Effect just can only be flexible without producing skew along its own axis.
5th, the present invention in, using " upper cap and lower cover cap are that Jing trip bolts are fixed on body, upper cap and
Lower cover cap is close on the body, and upper cap and lower cover cap have a dip section for extending into axial notch, the dip section
For blocking the spacer " as version, upper cap and lower cover cap be tightly held on body, it is fixed more
Plus it is firm, and only there is dip section to be used to block spacer for upper cap and lower cover cap, even if prolonged use, dip section receives body footpath
To the power in direction, because the other end of block props up body, block is not allowed to be also easy to produce loosening yet, extends service life.
6th, the present invention is designed with the spacer of four equal distributions on body circumference, and stress is equal when casing coupling
It is even, and each spacer has multigroup helical spring to support, and it is steady that spacer moves up and down stress；New casing box cupling is positioned
Device can be realized being accurately positioned in sleeve pipe, and can change substantially and uniform by suspending weight when through collar location.
Description of the drawings
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein：
Fig. 1 is the structural representation of the present invention
Mark in figure：
1st, body, 2, trip bolt, 3, upper cap, 4, spacer, 5, helical spring, 6, lower cover cap, 7, axial notch, 8,
Guide slot, 9, ramp, 10, lower inclined plane.
Specific embodiment
Embodiment 1
The invention discloses a kind of coiled tubing new casing collar locator, by body 1, upper cap 3, spacer 4,
Helical spring 5, lower cover cap 6, trip bolt 2 are constituted.From top to bottom the body 1, upper cap 3, spacer 4, helical spring 5,
Lower cover cap 6, trip bolt 2 are linked in sequence；The body 1 has centre bore for cylindrical, has screw thread in the upper and lower side of body 1, uses
In the upper lower tubular column of connection；Have four symmetrical axial notches on the body 1, each axial notch be embedded with one it is long
Square spacer 4, the bottom of spacer 4 is fluted for limiting helical spring along its own axis compression；The outer surface of spacer 4
For circular arc, there is arc-shaped convex middle part, and raised upper and lower side is circular arc intermediate incline；In the upper and lower side of spacer 4
There is upper and lower block 3,6 to limit the maximum radial displacement of spacer 4 respectively, spacer 4 is just radially movable in body recess；On
Lower cover cap 3,6 is fixed by trip bolt 2.
Embodiment 2
Used as another better embodiment of the present invention, it includes body 1, upper cap 3, spacer 4, the He of helical spring 5
Lower cover cap 6, body 1 is hollow cylindrical, and on the outer wall of the body 1 axial notch 7 is provided with, and is embedded with axial notch 7
The spacer 4, is provided with least three equally distributed helical springs between the spacer 4 and axial notch 7
5, the upper cap 3 and lower cover cap 6 are fixed on body 1, and upper cap 3 and lower cover cap 6 block respectively the spacer 4.Three
In individual helical spring 5, the stiffness factor of the helical spring 5 at both ends is more than the stiffness factor of the helical spring 5 of pars intermedia.
Embodiment 3
With reference to Figure of description 1, the preferred forms of the present invention are：Including body 1, upper cap 3, spacer 4, spiral
Spring 5 and lower cover cap 6, body 1 be hollow cylindrical, be provided with the outer wall of the body 1 four it is evenly distributed axial recessed
Groove 7, in axial notch 7 spacer 4 is embedded with, and four uniform point is provided between the spacer 4 and axial notch 7
The helical spring 5 of cloth, the upper cap 3 and lower cover cap 6 are fixed on body 1, and upper cap 3 and lower cover cap 6 keep off respectively
State spacer 4 in residence.The stiffness factor of middle two springs is consistent, and the stiffness factor of the helical spring 5 at both ends is more than centre
The stiffness factor of the helical spring 5 in portion, the stiffness factor near the helical spring 5 of that one end of upper cap 3 is more than near lower cover cap 6
The stiffness factor of the helical spring 5 of that one end.The guide slot 8 for accommodating the helical spring 5 is provided with the spacer 4.
The upper cap 3 and lower cover cap 6 are that Jing trip bolts 2 are fixed on body 1, and upper cap 3 and lower cover cap 6 are close to described
On body 1, upper cap 3 and lower cover cap 6 have a dip section for extending into axial notch 7, and the dip section is described fixed for blocking
Bit slice 4.The outer surface of the spacer 4 is provided with the projection in circular arc, and the raised upper end near that one end of upper cap 3 is
Ramp 9, near that one end of lower cover cap 6 raised lower end be lower inclined plane 10, the folder between ramp 9 and the surface of spacer 4
Angle is less than the angle between lower inclined plane 10 and the surface of spacer 4.
Operation principle is as follows：
Coiled tubing connects new casing collar locator, under enter in sleeve pipe, then slowly above carry coiled tubing and determine set
Pipe collar location.When the spacer 4 of new casing collar locator protrudes out into casing coupling gap, in helical spring 5
Under effect, the external diameter of spacer 4 can be expanded, and projection can be snapped in casing coupling gap, now continue slowly above to carry coiled tubing, fixed
Projection on bit slice 4 can be gradually tapered up in the presence of upper lifting power, so as to cause coiled tubing well head suspending weight to increase, work as increase
When value reaches 2 tons or so, in the sleeve pipe that the projection of spacer 4 will be more than sleeve pipe box cupling, now recover can be normal for suspending weight
The suspending weight for above carrying, because the bevel angle of raised upper end is more than lower end bevel angle, and bevel angle change in lower end is more gentle,
Suspending weight does not have and obviously changes during decentralization coiled tubing.
Claims (6)
1. a kind of coiled tubing new casing collar locator, including body（1）, upper cap（3）, spacer（4）, spiral bullet
Spring（5）And lower cover cap（6）, body（1）For hollow cylindrical, it is characterised in that：Axial direction is provided with body (1) outer wall
Groove (7), in axial notch (7) spacer is embedded with（4）, in the spacer（4）And axial notch（7）Between arrange
There are at least three equally distributed helical springs（5）, the upper cap（3）And lower cover cap（6）It is fixed on body（1）On,
And upper cap（3）And lower cover cap（6）The spacer is blocked respectively（4）；
Three helical springs（5）In, the helical spring at both ends（5）Stiffness factor more than pars intermedia helical spring（5）'s
Stiffness factor.
2. coiled tubing according to claim 1 new casing collar locator, it is characterised in that：The upper cap
（3）And lower cover cap（6）It is Jing trip bolts（2）It is fixed on body（1）On, upper cap（3）And lower cover cap（6）It is close to described
Body（1）On, upper cap（3）And lower cover cap（6）Axial notch is extended into one（7）Dip section, the dip section is used for
Block the spacer（4）.
3. coiled tubing according to claim 1 new casing collar locator, it is characterised in that：The axial notch
（7）Number be along body（1）Outer wall is equally distributed four.
4. a kind of coiled tubing new casing collar locator, including body（1）, upper cap（3）, spacer（4）, spiral bullet
Spring（5）And lower cover cap（6）, body（1）For hollow cylindrical, it is characterised in that：Axial direction is provided with body (1) outer wall
Groove (7), in axial notch (7) spacer is embedded with（4）, in the spacer（4）And axial notch（7）Between arrange
There are at least three equally distributed helical springs（5）, the upper cap（3）And lower cover cap（6）It is fixed on body（1）On,
And upper cap（3）And lower cover cap（6）The spacer is blocked respectively（4）；
Three helical springs（5）In, near upper cap（3）The helical spring of that one end（5）Stiffness factor more than near lower cover
Cap（6）The helical spring of that one end（5）Stiffness factor.
5. a kind of coiled tubing new casing collar locator, including body（1）, upper cap（3）, spacer（4）, spiral bullet
Spring（5）And lower cover cap（6）, body（1）For hollow cylindrical, it is characterised in that：Axial direction is provided with body (1) outer wall
Groove (7), in axial notch (7) spacer is embedded with（4）, in the spacer（4）And axial notch（7）Between arrange
There are at least three equally distributed helical springs（5）, the upper cap（3）And lower cover cap（6）It is fixed on body（1）On,
And upper cap（3）And lower cover cap（6）The spacer is blocked respectively（4）；
The helical spring（5）For four, the stiffness factor of middle two springs is consistent, the helical spring at both ends（5）Strength
Helical spring of the degree coefficient more than pars intermedia（5）Stiffness factor, near upper cap（3）The helical spring of that one end（5）Strength
Degree coefficient is more than near lower cover cap（6）The helical spring of that one end（5）Stiffness factor.
6. the coiled tubing new casing collar locator according to claim 1 or 2 or 4 or 5, it is characterised in that：Institute
State spacer（4）Outer surface be provided with the projection in circular arc, near upper cap（3）The raised upper end of that one end is upper oblique
Face（9）, near lower cover cap（6）The raised lower end of that one end is lower inclined plane（10）, ramp（9）With spacer（4）Surface it
Between angle be less than lower inclined plane（10）With spacer（4）Angle between surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502372.5A CN103850676B (en) | 2012-11-30 | 2012-11-30 | Novel casing coupling positioner for coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502372.5A CN103850676B (en) | 2012-11-30 | 2012-11-30 | Novel casing coupling positioner for coiled tubing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103850676A CN103850676A (en) | 2014-06-11 |
| CN103850676B true CN103850676B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502372.5A Active CN103850676B (en) | 2012-11-30 | 2012-11-30 | Novel casing coupling positioner for coiled tubing |
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| CN (1) | CN103850676B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120109A (en) * | 2017-06-05 | 2017-09-01 | 中国石油天然气股份有限公司 | Split type sand prevention cutting ferrule coupling positioner |
| 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) |
| CN110748336B (en) * | 2019-08-06 | 2024-01-23 | 中国石油天然气集团有限公司 | Magnetic signal control electromagnetic force driving mechanical positioner and method |
| CN110439541B (en) * | 2019-08-21 | 2023-11-03 | 中国石油天然气集团有限公司 | Casing coupling positioner and positioning method by means of friction positioning |
| RU199692U1 (en) * | 2020-02-21 | 2020-09-15 | Салават Анатольевич Кузяев | Mechanical Coupling Locator |
| CN111663907B (en) * | 2020-06-16 | 2020-12-22 | 大庆市傲阳石油科技开发有限公司 | Heat-preservation type lining underground tubing coupling and installation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2447519Y (en) * | 2000-08-25 | 2001-09-12 | 胜利石油管理局东辛采油厂 | Oil riser bleeder |
| CN2485410Y (en) * | 2001-04-30 | 2002-04-10 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Stabilizer for underground tools |
| CN2550503Y (en) * | 2002-07-17 | 2003-05-14 | 窦锡陆 | Mechanical connection hoop |
| CN201095964Y (en) * | 2007-08-24 | 2008-08-06 | 阜新驰宇石油机械有限公司 | Jet-proof anchoring equipment |
| CN201486495U (en) * | 2009-08-04 | 2010-05-26 | 徐伟国 | Screw pump anchor |
| CN101624901B (en) * | 2009-08-04 | 2012-10-10 | 徐伟国 | Anchoring device of screw pump |
| CN202031510U (en) * | 2011-05-13 | 2011-11-09 | 中国石油天然气股份有限公司 | Casing coupling locator |
| CN202117663U (en) * | 2011-06-10 | 2012-01-18 | 中国石油天然气股份有限公司 | Casing coupling locator |
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2012
- 2012-11-30 CN CN201210502372.5A patent/CN103850676B/en active Active
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| CN103850676A (en) | 2014-06-11 |
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Effective date of registration: 20200915 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |
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