CN202970706U - Novel casing coupling positioner for coiled tubing - Google Patents
Novel casing coupling positioner for coiled tubing Download PDFInfo
- Publication number
- CN202970706U CN202970706U CN 201220647428 CN201220647428U CN202970706U CN 202970706 U CN202970706 U CN 202970706U CN 201220647428 CN201220647428 CN 201220647428 CN 201220647428 U CN201220647428 U CN 201220647428U CN 202970706 U CN202970706 U CN 202970706U
- Authority
- CN
- China
- Prior art keywords
- spacer
- helical spring
- lower cover
- coiled tubing
- cover cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 title abstract description 8
- 238000010168 coupling process Methods 0.000 title abstract description 8
- 238000005859 coupling reaction Methods 0.000 title abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims abstract description 63
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000003825 pressing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000013475 authorization Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 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
- 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
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a coiled tubing is with novel sleeve joint hoop locator relates to oil gas well downhole tool field for oil development, including body, last block, spacer, coil spring and lower block, the body is hollow cylinder, it has the axial recess to open on the body outer wall, is embedded at the axial recess the spacer be provided with at least three evenly distributed between spacer and the axial recess coil spring, go up the block and fix on the body with lower block, and go up block and block respectively with lower block the spacer. The utility model discloses can realize the accurate positioning in the sleeve pipe to can change obviously and even through the weight of hanging when coupling position, be applicable to very much the accurate positioning of continuous oil pipe operation in the airtight sleeve pipe of non-, the accurate positioning of connecting.
Description
Technical field
The utility model relates to oil development with Oil/gas Well downhole tool field, exactly relate to a kind of coiled tubing new casing collar locator, this casing collar locator (CCL) can be realized the accurate location of underground continuous oil pipe in sleeve pipe, need to be applicable to pinpoint thin interbed pressing crack construction.
Background technology
There are a plurality of payzones in the vertical in most domestic oil-gas reservoir, and mostly be thin interbed, what have even reaches more than 5 layers, in order to improve single well productivity and oil gas field ultimate recovery, after the oil gas well drilling construction was completed, implementing fracture acidizing was the important modification measures of realizing well production increment.And must control comparatively accurately coiled tubing and instrument depth of setting thereof in this transformation process, just can make the fracture acidizing effect reach optimum.
At present, the depth counter that continuous oil pipe operation equipment carries can not satisfy the pinpoint operation of these class needs, and the error that its 1000m produces is about the 2m left and right, can't satisfy job requirements.
Notice of authorization number is 202117663U, and notice of authorization day is that the Chinese patent literature on January 18th, 2012 discloses a kind of casing collar locator (CCL), is applied to the oil field well coiled tubing and measures the casing coupling position.Be evenly distributed with three axial notches on the outer wall of body, be embedded with a rectangle positioning wedged block at each axial notch of body; Compress Spring is arranged at the bottom at each groove of body, and the external surface of positioning wedged block is circular arc, the arc convex of oriented outer lug on the positioning wedged block external surface, and there is the inclined-plane at the two ends up and down of arc convex; Fixture block pressing plate in the groove of body and on the upper and lower end of positioning wedged block has, upper pin is fixed on upper fixture block pressing plate in the groove of body; Upper fixture block pressing plate and lower fixture block pressing plate block respectively positioning wedged block two ends.Effect is: can carry out the position that coiled tubing carries out many thin layer oils gas well construction operation judgement box cupling.Adopt frame for movement to realize accurately location, simpler, durable than electronics collar locator, adapt to complicated abominable underground construction environment.
But the prior art take above-mentioned patent documentation as representative, still there is following shortcoming in it;
1, in above-mentioned patent documentation, only be provided with a spring between this positioning wedged block and groove, such form of structure, the spring place just is equivalent to the strong point of lever, positioning wedged block just is equivalent to a lever, and coiled tubing be lowered to process and on put forward the process of coiled tubing, positioning wedged block upper, lower two ends can be distinguished first stressed, the two ends unbalance stress of positioning wedged block under the support of a spring, one end of positioning wedged block will upwarp, the other end will sink, the end portion that the positioning wedged block side relative with groove even can occur directly is pressed on groove, thereby make coiled tubing be lowered to and on the suspending weight carried produce very significantly and change, stationarity also is affected, finally can cause the locating effect of locator to be had a greatly reduced quality.
2, on it, lower fixture block is that direct via pins is fixed in the groove of body, on, unsettled between lower fixture block and groove, this unsettled place leaves for the free gap of positioning wedged block through the telescopic spring drive, on, the end of lower fixture block is not fixed with body, such form of structure, on the one hand, needs due to unsettled setting, make, not fixing not firm in groove of lower fixture block, on the other hand, due to upper, one end of lower fixture block need to be subjected to the extruding force of positioning wedged block for a long time, and on, the other end of lower fixture block is not fixed on body again, therefore, itself just fixing illusive on, the easier stressed generation distortion of lower fixture block, on, the pin place of lower fixture block has just become the central pivot point of lever, on final positioning wedged block can be deviate from, fixing of lower fixture block, cause life of product greatly to reduce, this kind form of structure, can't extensively promote the use of in real process at all.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of coiled tubing new casing collar locator, the utility model can be realized accurate location in sleeve pipe, and can change obviously and evenly, be highly suitable for the accurate location of continuous oil pipe operation in non-hermetic seal sleeve pipe by suspending weight through the box cupling position time.
The utility model is by adopting following technical proposals to realize:
A kind of coiled tubing new casing collar locator, comprise body, upper cap, spacer, helical spring and lower cover cap, body is the cylindrical of hollow, it is characterized in that: have axial notch on described body outer wall, be embedded with described spacer at axial notch, be provided with at least three equally distributed described helical springs between described spacer and axial notch, described upper cap and lower cover cap are fixed on body, and upper cap and lower cover cap block respectively described spacer.
In three helical springs, the helical spring stiffness factor at both ends is greater than the helical spring stiffness factor of pars intermedia.
In three helical springs, the helical spring stiffness factor of close that end of upper cap is greater than the helical spring stiffness factor near that end of lower cover cap.
Described helical spring is four, the stiffness factor of middle two springs is consistent, the helical spring stiffness factor at both ends is greater than the helical spring stiffness factor of pars intermedia, and the helical spring stiffness factor of close that end of upper cap is greater than the helical spring stiffness factor near that end of lower cover cap.
Be provided with on described spacer and hold described helical spring guide slot.
Described upper cap and lower cover cap are fixed on body through trip bolt, and upper cap and lower cover cap are close on described body, and upper cap and lower cover cap have a dip section that extends into axial notch, and this dip section is used for blocking described spacer.
The external surface of described spacer is provided with the projection that is circular arc, the upper end of the projection of close that end of upper cap is ramp, lower end near the projection of that end of lower cover cap is lower inclined plane, and the angle between ramp and spacer surface is less than the angle between lower inclined plane and spacer surface.
The number of described axial notch is along the body outer wall equally distributed four.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
1, in the utility model, adopt and " be provided with at least three equally distributed described helical springs between described spacer and axial notch, described upper cap and lower cover cap are fixed on body, and upper cap and lower cover cap block respectively described spacer " mode, with respect to prior art, three helical springs evenly distribute, when stressed, the two ends of spacer arrange the stressed of each place will be very even, thereby when be lowered to or on when carrying coiled tubing, the suspending weight of coiled tubing can not produce obvious variation, stationarity is very good, strengthened locator pinpoint effect in sleeve pipe.
2, in the utility model, adopt " in three helical springs, the helical spring stiffness factor at both ends is greater than the helical spring stiffness factor of pars intermedia " such mode, in actual use, no matter be sleeve pipe be lowered to or on put forward process, when sleeve pipe just contacts with projection, stressed is upper end or the lower end of spacer at first, and the middle part is stressed less, and in the utility model, due to the helical spring stiffness factor at the both ends stiffness factor greater than pars intermedia, so, the helical spring at the both ends of spacer can be offset the adverse effect that is subjected to larger extruding force at both ends greatly, thereby kept better the stress equalization of whole spacer, the suspending weight that guarantees better coiled tubing does not produce obvious variation, further strengthened locator pinpoint effect in sleeve pipe.
3, in the utility model, adopt " the helical spring stiffness factor of close that end of upper cap is greater than the helical spring stiffness factor near that end of lower cover cap " such mode, with " on projection, angle between the above and spacer surface is less than the angle between lower inclined plane and spacer surface " structure match, considered fully objective reality, the mitre of lower inclined plane coordinates with the helical spring of less stiffness factor and makes coiled tubing can be lowered to more smoothly in being lowered to process, the little angle of ramp coordinates with the helical spring of handing over large stiffness factor and makes coiled tubing can bear larger bearing capacity upper in putting forward process.
4, in the utility model, " be provided with on described spacer and hold described helical spring guide slot " such mode of employing, in axial notch during along the radial floating of body, helical spring telescopic location is because the orientation of guide slot is just can only be along himself axis flexible and can not produce skew when spacer.
5, in the utility model, " described upper cap and lower cover cap are fixed on body through trip bolt in employing, upper cap and lower cover cap are close on described body, upper cap and lower cover cap have a dip section that extends into axial notch, this dip section is used for blocking described spacer " such form of structure, upper cap and lower cover cap are to be fixed on tightly on body, fixing more firm, and upper cap and lower cover cap only have dip section and are used for blocking spacer, even prolonged use, dip section is subjected to the power of body radial direction, because another of blocking a shot props up body, block also is not easy to produce loosening, extended application life.
6, be designed with the spacer of four equal distribution in the utility model on the body circumference, stressed when the casing coupling evenly and each spacer all has many group helical springs to support, spacer move up and down stressed steadily; The new casing collar locator can be realized accurate location in sleeve pipe, and can change obviously and be even by suspending weight through the box cupling position time.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is structural representation of the present utility model
Mark in figure:
1, 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.
The specific embodiment
Embodiment 1
The utility model discloses a kind of coiled tubing new casing collar locator, formed by body 1, upper cap 3, spacer 4, helical spring 5, lower cover cap 6, trip bolt 2.Described body 1, upper cap 3, spacer 4, helical spring 5, lower cover cap 6, trip bolt 2 are linked in sequence from top to bottom; Described body 1 has screw thread for cylindrical has centre bore at body 1 upper and lower side, is used for connecting upper lower tubular column; Four symmetrical axial notches are arranged on described body 1, be embedded with a rectangle spacer 4 at each axial notch, the bottom of spacer 4 is fluted for limiting helical spring along himself axis compression; Spacer 4 external surfaces are circular arc, and there is arc-shaped convex the middle part, and the upper and lower side of projection is circular arc transition inclined-plane; The maximum radial displacement of 3, the 6 restriction spacers 4 of blocking a shot is up and down arranged respectively, just radially motion in body recess of spacer 4 at the upper and lower side of spacer 4; Block a shot up and down and 3,6 fixed by trip bolt 2.
Embodiment 2
As another better embodiment of the present utility model, it comprises body 1, upper cap 3, spacer 4, helical spring 5 and lower cover cap 6, body 1 is the cylindrical of hollow, have axial notch 7 on described body 1 outer wall, be embedded with described spacer 4 at axial notch 7, be provided with at least three equally distributed described helical springs 5 between described spacer 4 and axial notch 7, described upper cap 3 and lower cover cap 6 are fixed on body 1, and upper cap 3 and lower cover cap 6 block respectively described spacer 4.In three helical springs 5, the stiffness factor of the helical spring 5 at both ends is greater than the stiffness factor of the helical spring 5 of pars intermedia.
With reference to Figure of description 1, preferred forms of the present utility model is: comprise body 1, upper cap 3, spacer 4, helical spring 5 and lower cover cap 6, body 1 is the cylindrical of hollow, have four equally distributed axial notches 7 on described body 1 outer wall, be embedded with described spacer 4 at axial notch 7, be provided with four equally distributed described helical springs 5 between described spacer 4 and axial notch 7, described upper cap 3 and lower cover cap 6 are fixed on body 1, and upper cap 3 and lower cover cap 6 block respectively described spacer 4.The stiffness factor of middle two springs is consistent, the stiffness factor of the helical spring 5 at both ends is greater than the stiffness factor of the helical spring 5 of pars intermedia, and the stiffness factor of the helical spring 5 of close upper cap 3 those ends is greater than the stiffness factor of the helical spring 5 of close lower cover cap 6 those ends.Be provided with the guide slot 8 that holds described helical spring 5 on described spacer 4.Described upper cap 3 and lower cover cap 6 are fixed on body 1 through trip bolt 2, upper cap 3 and lower cover cap 6 are close on described body 1, upper cap 3 and lower cover cap 6 have a dip section that extends into axial notch 7, and this dip section is used for blocking described spacer 4.The external surface of described spacer 4 is provided with the projection that is circular arc, the upper end of the projection of close upper cap 3 those ends is ramp 9, lower end near the projection of lower cover cap 6 those ends is lower inclined plane 10, and the angle between ramp 9 and spacer 4 surfaces is less than the angle between lower inclined plane 10 and spacer 4 surfaces.
Operating principle is as follows:
Coiled tubing connects the new casing collar locator, is lowered in sleeve pipe, then carries coiled tubing on slowly and determines the casing coupling position.when spacer 4 projections of new casing collar locator enter the casing coupling gap, under the effect of helical spring 5, spacer 4 external diameters can be expanded, projection can snap in the casing coupling gap, carry coiled tubing on continuing this moment slowly, projection on spacer 4 can be shunk under the effect of the upper power of lifting gradually, thereby cause that coiled tubing well head suspending weight increases, when value added reaches 2 tons of left and right, the projection of spacer 4 will enter in the above sleeve pipe of casing coupling, the suspending weight of carrying on suspending weight recovery meeting this moment is normal, due to the bevel angle of protruding upper end greater than the lower end bevel angle, and the lower end bevel angle changes comparatively mild, when transferring coiled tubing, suspending weight does not have very significantly and changes.
Claims (7)
1. coiled tubing new casing collar locator, comprise body (1), upper cap (3), spacer (4), helical spring (5) and lower cover cap (6), body (1) is the cylindrical of hollow, it is characterized in that: have axial notch (7) on described body (1) outer wall, be embedded with described spacer (4) at axial notch (7), be provided with at least three equally distributed described helical springs (5) between described spacer (4) and axial notch (7), described upper cap (3) and lower cover cap (6) are fixed on body (1), and upper cap (3) and lower cover cap (6) block respectively described spacer (4), be provided with the guide slot (8) that holds described helical spring (5) on described spacer (4).
2. a kind of coiled tubing new casing collar locator according to claim 1, it is characterized in that: in three helical springs (5), the stiffness factor of the helical spring at both ends (5) is greater than the stiffness factor of the helical spring (5) of pars intermedia.
3. a kind of coiled tubing new casing collar locator according to claim 1, it is characterized in that: in three helical springs (5), the stiffness factor of the helical spring (5) of close that end of upper cap (3) is greater than the stiffness factor of the helical spring (5) of close that end of lower cover cap (6).
4. a kind of coiled tubing new casing collar locator according to claim 1, it is characterized in that: described helical spring (5) is four, the stiffness factor of middle two springs is consistent, the stiffness factor of the helical spring at both ends (5) is greater than the stiffness factor of the helical spring (5) of pars intermedia, and the stiffness factor of the helical spring (5) of close that end of upper cap (3) is greater than the stiffness factor of the helical spring (5) of close that end of lower cover cap (6).
5. a kind of coiled tubing new casing collar locator according to claim 1, it is characterized in that: described upper cap (3) and lower cover cap (6) are fixed on body (1) through trip bolt (2), upper cap (3) and lower cover cap (6) are close on described body (1), upper cap (3) and lower cover cap (6) have a dip section that extends into axial notch (7), and this dip section is used for blocking described spacer (4).
6. according to claim 1 and 2 or 3 or 4 described a kind of coiled tubing new casing collar locators, it is characterized in that: the external surface of described spacer (4) is provided with the projection that is circular arc, the upper end of the projection of close that end of upper cap (3) is ramp (9), lower end near the projection of that end of lower cover cap (6) is lower inclined plane (10), and the angle between ramp (9) and spacer (4) surface is less than the angle between lower inclined plane (10) and spacer (4) surface.
7. a kind of coiled tubing new casing collar locator according to claim 1 is characterized in that: the number of described axial notch (7) is for along equally distributed four of body (1) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647428 CN202970706U (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 |
|---|---|---|---|
| CN 201220647428 CN202970706U (en) | 2012-11-30 | 2012-11-30 | Novel casing coupling positioner for coiled tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970706U true CN202970706U (en) | 2013-06-05 |
Family
ID=48511793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647428 Expired - Lifetime CN202970706U (en) | 2012-11-30 | 2012-11-30 | Novel casing coupling positioner for coiled tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882550A (en) * | 2017-11-15 | 2018-04-06 | 烟台杰瑞石油装备技术有限公司 | A kind of closed well head box cupling detection means |
| CN109252822A (en) * | 2018-11-12 | 2019-01-22 | 中国石油集团渤海钻探工程有限公司 | Coiled tubing casing collar locator (CCL) |
-
2012
- 2012-11-30 CN CN 201220647428 patent/CN202970706U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882550A (en) * | 2017-11-15 | 2018-04-06 | 烟台杰瑞石油装备技术有限公司 | A kind of closed well head box cupling detection means |
| CN109252822A (en) * | 2018-11-12 | 2019-01-22 | 中国石油集团渤海钻探工程有限公司 | Coiled tubing casing collar locator (CCL) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103850676A (en) | Novel casing coupling positioner for coiled tubing | |
| CN202031510U (en) | Casing coupling locator | |
| CN202970706U (en) | Novel casing coupling positioner for coiled tubing | |
| CN103485744A (en) | Directional well zonal injection centralizing packer | |
| CN203559864U (en) | Quick drilling composite bridge plug for fracturing | |
| CN104847266B (en) | A kind of anchor pole multi-section reaming equipment and its application | |
| CN206830169U (en) | Casing coupling locator | |
| US20120125692A1 (en) | Force compensator for top drive assembly | |
| CN103510905A (en) | Underground stratification testing sampling instrument variable-diameter packing structure | |
| CN104832158A (en) | Anti-sand mechanical coupling positioning tool | |
| CN203594406U (en) | Novel two-direction-setting packer | |
| CN203452723U (en) | Double-tube double-slip high-pressure water injection packer | |
| CN201306133Y (en) | Variable-nominal-diameter centralizer | |
| CN208330332U (en) | A kind of oil exploration drilling detection and localization equipment | |
| CN104075860A (en) | Detection tool for threaded connection air seal and detection method | |
| CN204457741U (en) | Sand-proof type machinery box cupling orientation tool | |
| CN202467716U (en) | Automatic spinner for petroleum drilling | |
| CN104963640A (en) | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system | |
| CN202000924U (en) | Hydraulic centralizer in sleeving for oil field | |
| CN203640627U (en) | Hydraulic bushing centralizer | |
| CN202441311U (en) | Annulus logging wellhead device | |
| CN204591142U (en) | A kind of anchor pole multi-section reaming facility | |
| CN204344006U (en) | With the Operating Pressure machine of anti-torque device | |
| CN205805508U (en) | The voltage-controlled multiple-circulation valve of full-bore | |
| CN205477554U (en) | A locator pushes down for well completion sand control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |