CN205422632U - Cage anchoring slips and packer slip mechanism - Google Patents
Cage anchoring slips and packer slip mechanism Download PDFInfo
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- CN205422632U CN205422632U CN201620203282.XU CN201620203282U CN205422632U CN 205422632 U CN205422632 U CN 205422632U CN 201620203282 U CN201620203282 U CN 201620203282U CN 205422632 U CN205422632 U CN 205422632U
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Abstract
The utility model provides a cage anchoring slips, including the slips body that is equipped with the inner chamber, be equipped with the anchor tooth on the outer peripheral face of the slips body, the material of the slips body is low carbon alloy steel. The utility model provides a packer slip mechanism, including installing cone, slips and lower cone on the packer heart is epaxial, the slips is for as above cage anchoring slips, the lower extreme of going up the cone from the upper end of the slips body stretch into in the inner chamber and with the slips body for cone combined with, down the cone the upper end from the lower extreme of the slips body stretch into in the inner chamber and with the slips body for cone combined with. In this application, after the slips body adopted low carbon alloy steel, it self had better elasticity, the anchor tooth anchoring sleeve pipe completely so it can open when packer setting smoothly, its shrink of can kick -backing smoothly when the packer deblocking for the product property of cage anchoring slips can obtain great improvement, has satisfied the operation requirement of packer under the high voltage ring border.
Description
Technical field
This utility model relates to downhole tool and manufactures field, particularly relates to a kind of cage grappling slips and packer slip mechanism.
Background technology
Packer is the downhole tool of a kind of annular space for insulating between tubing string and well and between tubing string and tubing string, mainly includes the parts such as mandrel, packing element, piston, piston bush, upper cone, slips, lower cone；Wherein, upper cone, slips and lower cone constitute packer slip mechanism.Slips is arranged between upper cone and lower cone, and upper cone is connected with other parts of packer with lower cone again.
In process of production, packer is gone into the well with completion tubular column after putting in place, by pitching or under enter blanking plug closure oil pipe and the passage of annular space.During packer setting, suppressing from oil pipe, fluid enters hydraulic cylinder through the pressure transmission hole of packer mandrel；Under the effect of hydraulic pressure, first the shear pin that sets on packer piston is cut off, therefore descent of piston promotes upper cone descending so that the spacing between upper cone and lower cone is gradually reduced, therefore the two ends up and down of slips are flared out, and make slips anchoring on the tube wall of sleeve pipe.During removing seal for packer, upper cone and lower cone reset, then the resilience of two ends up and down of slips is shunk and is separated with tube wall.Therefore, the quality opening performance and resilience shrinkage of slips directly influences oil well yield and production safety.
But, there is following defect in the slips of most of packers: due to difference and the difference of use environment of material property, slips often can not be anchored on the tube wall of sleeve pipe completely, therefore slips also cannot play the effect that packer is fixed on sleeve pipe.At present, oil-water well is more and more higher to the requirement of packer serviceability, how to improve complete anchor sleeve when slips opens and can resilience is shunk smoothly performance just seem ever more important.
Utility model content
The shortcoming of prior art in view of the above, the technical problems to be solved in the utility model is to provide a kind of cage grappling slips, its fully anchor sleeve can successfully resilience shrinking when removing seal for packer when packer setting.
For achieving the above object, this utility model provides a kind of cage grappling slips, and including being provided with the slips body of inner chamber, the outer peripheral face of described slips body is provided with anchoring tooth, and the material of described slips body is low-carbon alloy steel.
Further, the two ends up and down of described slips body all offer the elastic groove that multiple tracks is axially extending, the most through, the upper end of the elastic groove being positioned at slips body upper end side extends upwardly to the upper end surface of slips body, and the lower end of the elastic groove being positioned at slips body lower end side extends downward at the lower surface of slips body.
Preferably, described elastic groove is formed on slips body by the processing mode that line cuts.
Preferably, the relation between axial length L 1 and the axial length L 2 of slips body of described elastic groove is: L1=0.8L2～0.95L2.
Further, the outer surface of described anchoring tooth crown is provided with carburized layer.
To be solved in the utility model another problem is that provides a kind of packer slip mechanism, and packer slips when setting can successfully open and be anchored on sleeve pipe, and packer slips when deblocking can successfully be regained, thus ensures the serviceability of packer.
For achieving the above object, this utility model provides a kind of packer slip mechanism, including the upper cone being arranged on packer mandrel, slips and lower cone, described slips is cage grappling slips as above, the lower end of described upper cone is stretched into from the upper end of slips body inner chamber and is cone match with slips body, and the upper end of described lower cone is stretched into from the lower end of slips body inner chamber and is cone match with slips body.
Further, the junction of described upper cone and slips body is provided with the equally distributed shear pin of multiple circumference, and the upper end of described slips body offers the equally distributed stopper slot of multiple circumference, and described shear pin is located in stopper slot.
Further, the junction of described lower cone and slips body is provided with the equally distributed steady pin of multiple circumference, and the lower end of described slips body offers multiple circumference and is uniformly distributed and axially extended spacing gathering sill, and described steady pin is located in spacing gathering sill.
As it has been described above, the cage grappling slips that relates to of this utility model and packer slip mechanism, have the advantages that
The material of cage grappling slips uses low-carbon alloy steel, its material property is good, quenching degree is higher, without temper brittleness, weldability is fairly good, the tendency forming cold cracking is the least, machinability and cold strain plasticity are good, therefore slips body self has preferable elasticity, therefore, when packer setting, under the effect in opposite directions of upper cone and lower cone, the two ends up and down of slips body can successfully be flared out so that the anchoring tooth on the external side face of slips can be anchored on the tube wall of sleeve pipe completely, and then is firmly secured on sleeve pipe by packer；When removing seal for packer, upper cone and lower cone reset, due to the elastic reaction of slips body self, therefore the automatic rebounding retracted for clearance of two ends up and down of slips body.So, in the application, the properties of product of cage grappling slips are greatly improved, and meet packer use requirement under environment under high pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of cage grappling slips in this utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the upward view of Fig. 1.
Fig. 4 is the sectional view of Fig. 1.
Fig. 5 is cage grappling slips anchoring tooth crown Surface heat-treatent figure in Fig. 1.
Fig. 6 is the structural representation of packer slip mechanism in this utility model.
Element numbers explanation
1 slips body
11 elastic grooves
12 stopper slots
13 spacing gathering sills
2 anchoring teeth
3 upper cones
4 lower cones
5 mandrels
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model being described below, those skilled in the art can be understood other advantages of the present utility model and effect easily by the content disclosed by this specification.
Notice, structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate the content disclosed in description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of this utility model, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still fall in the range of the technology contents disclosed in this utility model obtains and can contain.Simultaneously, in this specification cited as " on ", D score, "left", "right", the term of " middle " etc., it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of this utility model, being altered or modified of its relativeness, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.
As it is shown in figure 1, this utility model provides a kind of cage grappling slips, including being provided with the slips body 1 of inner chamber, the outer peripheral face of described slips body 1 is provided with anchoring tooth 2, and the material of described slips body 1 is low-carbon alloy steel.As shown in Figure 6, this utility model also provides for a kind of packer slip mechanism, including the upper cone 3 being from top to bottom sequentially connected, slips and lower cone 4, described slips is cage grappling slips as above, the lower end of described upper cone 3 is stretched into inner chamber from the upper end of slips body 1, and the inner peripheral surface of the outer peripheral face of upper cone 3 and slips body 1 is cone match, the upper end of described lower cone 4 is stretched into inner chamber from the lower end of slips body 1, and the inner peripheral surface of the outer peripheral face of lower cone 4 and slips body 1 is cone match；When upper cone 3, slips and lower cone 4 assembling constitute packer slip mechanism after, then using this slip mechanism as integral installation in the mandrel 5 of packer.
Further, as depicted in figs. 1 and 2, the junction of described upper cone 3 and slips body 1 is provided with six equally distributed shear pins of circumference, the upper end of described slips body 1 offers six equally distributed stopper slots of circumference 12, described shear pin is located in stopper slot 12, it is achieved the axial limiting between upper cone 3 and slips body 1 and radial direction are the most spacing.
Further, as shown in figures 1 and 3, the junction of described lower cone 4 and slips body 1 is provided with six equally distributed steady pins of circumference, the lower end of described slips body 1 offers six circumferences and is uniformly distributed and axially extended spacing gathering sill 13, described steady pin is located in spacing gathering sill 13, it is achieved the axially directed and radial direction between lower cone 4 and slips body 1 is the most spacing.
Cage grappling slips and the operation principle of packer slip mechanism that the application relates to be:
During packer setting, under hydraulic action, first the shear pin that sets on piston is cut off, descent of piston promotes upper cone 3 descending, the shear pin being then located in slips body 1 upper end stopper slot 12 is cut off, upper cone 3 continues traveling downwardly so that the spacing between upper cone 3 and lower cone 4 constantly reduces, therefore upper cone 3 and lower cone 4 two-way function are in slips body 1.Owing to the material of slips body 1 uses low-carbon alloy steel, low-carbon alloy steel material property is good, quenching degree is higher, without temper brittleness, weldability is fairly good, the tendency forming cold cracking is the least, machinability and cold strain plasticity are good, therefore slips body 1 self has preferable elasticity, therefore, when packer setting, under the effect in opposite directions of upper cone 3 and lower cone 4, and by upper cone 3 and the cone match of slips body 1 and lower cone 4 and the cone match of slips body 1, the two ends up and down making slips body 1 can successfully be flared out, so that the anchoring tooth 2 on slips body 1 outer peripheral face can be anchored on the tube wall of sleeve pipe completely, and then packer is firmly secured on sleeve pipe.When removing seal for packer, mandrel 5 first band moving sleeve is up, releases the compression of packing element in packer, makes packing element resilience reset；Drive afterwards to move on piston and upper cone 3 and depart from slips body 1, due to the elastic reaction of slips body 1 self, therefore the automatic rebounding retracted for clearance of two ends up and down of slips body 1, release the grappling to packer.So, in the application, the properties of product of cage grappling slips are greatly improved, and meet packer use requirement under various hole conditions, particularly meet packer use requirement under environment under high pressure.
Additionally, during packer setting, slips body 1 has along the most descending the moving of slips body 1 for lower cone 4, and during removing seal for packer, slips body 1 has along the most up the moving of slips body 1 for lower cone 4, slips body 1 along its axially with respect to lower cone 4 downlink or uplink time, can ensure that slips body 1 can only be along its axial downlink or uplink by steady pin and cooperating of the spacing gathering sill 13 being located at slips body 1 lower end, and then play good axially directed effect, improve the reliability of motion between packer setting or deblocking Shi Ge mechanism.Therefore, the axial length of the spacing gathering sill 13 being opened in slips body 1 lower end is greater than the axial length of the stopper slot 12 being opened in slips body 1 upper end.
Further, this utility model also provides for the processing technique of a kind of cage grappling slips, comprises the following steps successively:
A, the Internal periphery of rough turn slips body 1 and outline, as shown in Figure 4, the tentatively outer peripheral face at slips body 1 is got on the bus and is processed anchoring tooth 2；
B, ultrasonic examination, it is possible to accurate, convenient, with no damage detect slips body 1 internal whether exist crackle, be mingled with, the defect such as pore, sand holes；
C, the Internal periphery of finish turning slips body 1 and outline, make each dimensional accuracy of slips body 1 all meet the requirements；
D, heat treatment: as shown in Figure 5, two region A are thermal treatment zone, i.e. the crown surface anchoring tooth 2 on slips body 1 outer peripheral face is used nitrogencase hardening lonneal, thus forming the carburized layer covered at anchoring tooth 2 crown outer surface so that the hardness of the crown surface acquisition higher hardness and anchoring tooth 2 crown case-carbonizing layer that anchor tooth 2 on slips body 1 outer peripheral face should be greater than the hardness of sleeve pipe；Therefore, when packer setting, slips body 1 are flared out, anchoring tooth 2 can reliably be anchored on the tube wall of sleeve pipe；
E, at the two ends up and down of slips body 1 linear cutter groove；As shown in Figure 1 to Figure 3, cut out the 12 road elastic grooves 11 being formed at slips body 1 upper end and the 12 road elastic grooves 11 being formed at slips body 1 lower end, the through slips body 1 of the described elastic groove 11 radial direction along the axially extending of slips body 1 and along slips body 1, the upper end of the elastic groove 11 being positioned at slips body 1 upper end side extends upwardly to the upper end surface of slips body 1, and the lower end of the elastic groove 11 being positioned at slips body 1 lower end side extends downward at the lower surface of slips body 1；By all arranging the 12 road equally distributed elastic grooves 11 of circumference at the upper end of slips body 1 and lower end, can be further ensured that slips body 1 can successfully open anchor sleeve and successfully resilience can shrink releasing grappling when removing seal for packer when packer setting；
F, slips use magnetic powder inspection to be magnetized by product, the leakage field utilizing its rejected region can adsorb the feature of magnetic powder, demonstrate surface defect and the near surface flaw of tested slips according to the distribution of magnetic powder, finally the defect of slips is repaired, thus be greatly improved the quality of slips.
Further, in described step E, relation between axial length L 1 and the axial length L 2 of slips body 1 of the elastic groove 11 that line cuts out is: L1=0.8L2～0.95L2, that is, the lower end of the 12 road elastic grooves 11 being positioned at slips body 1 upper end all extends to the lower section of slips body 1, the lower end of the 12 road elastic grooves 11 being positioned at slips body 1 upper end all extends to the lower section of slips body 1, advantageously when packer setting slips body about 1 two ends open and the resilience at slips body about 1 two ends is shunk during removing seal for packer.
Preferably, in order to ensure the structural strength of slips body 1, as in figure 2 it is shown, the top-stitching at two adjacent stopper slots 12 cuts twice elastic groove 11；As it is shown on figure 3, the top-stitching at two adjacent spacing gathering sills 13 cuts twice elastic groove 11.
In sum, slips body 1 in the application has after have employed low-carbon alloy steel and preferably opens and rebound performance, the crown surface of the anchoring tooth 2 on slips body 1 surface carries out quenching after carbunse process simultaneously, make the crown hardness anchoring tooth 2 reach requirement, therefore the cage grappling slips core hardness in the application is relatively low, good toughness, it is not easily broken, it is easy to open and resilience, and the anchoring tooth crown of cage grappling slips is harder, it is simple to it is anchored on tube wall.So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for limiting this utility model.Above-described embodiment all can be modified under spirit and the scope of the present utility model or change by any person skilled in the art.Therefore, art has all equivalence modification or changes that usually intellectual is completed under without departing from the spirit disclosed in this utility model and technological thought such as, must be contained by claim of the present utility model.
Claims (8)
1. a cage grappling slips, including being provided with the slips body (1) of inner chamber, the outer peripheral face of described slips body (1) is provided with anchoring tooth (2), it is characterised in that: the material of described slips body (1) is low-carbon alloy steel.
Cage grappling slips the most according to claim 1, it is characterized in that: the two ends up and down of described slips body (1) all offer axially extending, the most through elastic groove of multiple tracks (11), the upper end of the elastic groove (11) being positioned at slips body (1) upper end side extends upwardly to the upper end surface of slips body (1), and the lower end of the elastic groove (11) being positioned at slips body (1) lower end side extends downward at the lower surface of slips body (1).
Cage grappling slips the most according to claim 2, it is characterised in that: described elastic groove (11) is formed on slips body (1) by the processing mode that line cuts.
Cage grappling slips the most according to claim 2, it is characterised in that: the relation between axial length L 1 and the axial length L 2 of slips body (1) of described elastic groove (11) is: L1=0.8L2～0.95L2.
Cage grappling slips the most according to claim 1, it is characterised in that: the outer surface of described anchoring tooth (2) crown is provided with carburized layer.
6. a packer slip mechanism, including the upper cone (3) being arranged on packer mandrel (5), slips and lower cone (4), it is characterized in that: described slips is the cage grappling slips as described in any one of claim 1-5, the lower end of described upper cone (3) is stretched into inner chamber from the upper end of slips body (1) and is cone match with slips body (1), and the upper end of described lower cone (4) is stretched into inner chamber from the lower end of slips body (1) and is cone match with slips body (1).
Packer slip mechanism the most according to claim 6, it is characterized in that: the junction of described upper cone (3) and slips body (1) is provided with the equally distributed shear pin of multiple circumference, the upper end of described slips body (1) offers the equally distributed stopper slot of multiple circumference (12), and described shear pin is located in stopper slot (12).
Packer slip mechanism the most according to claim 6, it is characterized in that: the junction of described lower cone (4) and slips body (1) is provided with the equally distributed steady pin of multiple circumference, the lower end of described slips body (1) offers multiple circumference and is uniformly distributed and axially extended spacing gathering sill (13), and described steady pin is located in spacing gathering sill (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620203282.XU CN205422632U (en) | 2016-03-16 | 2016-03-16 | Cage anchoring slips and packer slip mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620203282.XU CN205422632U (en) | 2016-03-16 | 2016-03-16 | Cage anchoring slips and packer slip mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN205422632U true CN205422632U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620203282.XU Active CN205422632U (en) | 2016-03-16 | 2016-03-16 | Cage anchoring slips and packer slip mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505559A (en) * | 2018-11-29 | 2019-03-22 | 成都铭鉴知源油田工程科技有限公司 | A kind of solvable bridge plug |
| CN112031698A (en) * | 2020-09-01 | 2020-12-04 | 四机赛瓦石油钻采设备有限公司 | Combined type anchoring slip |
| CN113236178A (en) * | 2021-07-12 | 2021-08-10 | 山东柏源技术有限公司 | High-temperature-resistant and pressure-resistant packer for oil drilling |
| WO2022245360A1 (en) * | 2021-05-20 | 2022-11-24 | Halliburton Energy Services, Inc. | Expandable metal slip ring for use with a sealing assembly |
-
2016
- 2016-03-16 CN CN201620203282.XU patent/CN205422632U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505559A (en) * | 2018-11-29 | 2019-03-22 | 成都铭鉴知源油田工程科技有限公司 | A kind of solvable bridge plug |
| CN112031698A (en) * | 2020-09-01 | 2020-12-04 | 四机赛瓦石油钻采设备有限公司 | Combined type anchoring slip |
| WO2022245360A1 (en) * | 2021-05-20 | 2022-11-24 | Halliburton Energy Services, Inc. | Expandable metal slip ring for use with a sealing assembly |
| GB2618943A (en) * | 2021-05-20 | 2023-11-22 | Halliburton Energy Services Inc | Expandable metal slip ring for use with a sealing assembly |
| CN113236178A (en) * | 2021-07-12 | 2021-08-10 | 山东柏源技术有限公司 | High-temperature-resistant and pressure-resistant packer for oil drilling |
| CN113236178B (en) * | 2021-07-12 | 2021-09-17 | 山东柏源技术有限公司 | High-temperature-resistant and pressure-resistant packer for oil drilling |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201805 Anting Jiading District Town Park Road, No. 2, building 338, No. Patentee after: Shanghai superior automation equipment Limited by Share Ltd Address before: 201805 Anting Jiading District Town Park Road, No. 2, building 338, No. Patentee before: Shanghai Genie-Robot Automatic Co., Ltd. |