CN203905848U - Downhole self-adaptive elastic centralizer - Google Patents
Downhole self-adaptive elastic centralizer Download PDFInfo
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- CN203905848U CN203905848U CN201420340650.6U CN201420340650U CN203905848U CN 203905848 U CN203905848 U CN 203905848U CN 201420340650 U CN201420340650 U CN 201420340650U CN 203905848 U CN203905848 U CN 203905848U
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- centralizer
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Abstract
The utility model relates to a downhole self-adaptive elastic centralizer. The centralizer is characterized by mainly comprising a centralizer link mechanism, a needle bearing unit and an elastic centralizing mechanism. The centralizer can be connected with a downhole traction device or a logging instrument matched with the centralizer, the centralizer can play the centralizing role by the aid of three groups of centralizing arms of the elastic centralizing mechanism, and the included angle formed by every two groups of centralizing arms is 120 degrees; the centralizer can rotate relatively along the axis so as to be self-adapted to complex conditions of a borehole while downhole elastic diameter change is realized, and deformation of the centralizer due to torsion under the complex conditions in the borehole is reduced or overcome; the centralizer is simple in structure and convenient to operate, the stability and the overall performance of the centralizer can be improved, the centralizing effect can be guaranteed, and the traction device or the logging instrument can be prevented from being blocked during downhole operation.
Description
Technical field
The utility model relates to Horizontal Well lower traction equipment or logger centralizer in a kind of petroleum exploration and development, is specifically related to a kind of down-hole self adaptation elastic centralizer.
Background technology
Along with the drilling technologies such as horizontal well, extended reach well, multihole well are being played the part of more and more important role in petroleum exploration and development process.In oil well logging process, the mode that most of employing drilling rod is carried downhole logging instruments at present, to horizontal wellbore logging, bring a lot of inconvenience, and along with borehole condition becomes increasingly complex, the increase of hole angle is, the growth of horizontal section length, the centralizer of downhole instrument in being lowered to process becomes and is more and more difficult to ensure card.
When draw-gear and logger G.I.H, the general centralizer that adopts improves draw-gear and logger in the stability of down-hole, minimizing is to the wearing and tearing of sleeve pipe and the damage to device or instrument self, avoid draw-gear or logger to occur jam phenomenon in underground work, improve logging efficiency, shorten the well logging cycle.Therefore, simple in structure, easy to operate, the centralizer that can overcome or adapt to well complex conditions is the guarantee that down-hole draw-gear or logger are efficient, stablize operation.
Utility model content
The purpose of this utility model is to provide a kind of down-hole draw-gear or logger self adaptation elastic centralizer, by elasticity righting mechanism, three to be assembled with multi-directional ball and angle be that the righting arm of 120 ° is realized its centralizing function; Under the effect of elasticity righting mechanism and needle bearing unit, can be for the relative rotation with self adaptation well complex situations along axis in can elasticity reducing in well, overcome or reduce centralizer and in well, under complex situations, be subject to torsional deflection, stability and the overall performance of raising centralizer.
In order to achieve the above object, the utility model adopts following technical scheme:
A down-hole self adaptation elastic centralizer, is characterized in that: comprise centralizer link mechanism, needle bearing unit, elasticity righting mechanism.
Centralizer link mechanism comprises lock-on connection, connects axis, lower locking end cap; Upper lock-on connection upper external thread is connected with draw-gear or logger, inner hole thread be connected axis and connect, simultaneously in order to compress regulating spring and upper needle bearing; Connecting axis is the thin and long circular axis that there is the location shaft shoulder at two ends, and two ends external screw thread connects respectively lock-on connection and lower locking end cap, rises and connects supporting role.
Elasticity righting mechanism comprises slip ring position-limiting drum, regulating spring, slip ring, upper support sliding sleeve, support arm, multi-directional ball, righting arm, lower support cover; Slip ring position-limiting drum is thin cylinder, by screw thread and upper lock-on connection, screws, and plays protection regulating spring and limit slip ring to act in axial sliding; Regulating spring adopts Rectangular Spring, and two ends are connected with upper lock-on connection, slip ring respectively, are the key elements that this centralizer is realized reducing; Slip ring top is fluted, and in order to regulating spring to be installed, endoporus coordinates with upper lock-on connection, is the critical element that transmits regulating spring end thrust; Upper support sliding sleeve is annulus cylinder, top coordinates with slip ring, slip ring position-limiting drum, endoporus coordinates with the outer ring of upper needle bearing, bottom angle is that three directions of 120 ° are connected with support arm by removable pin respectively, upper support sliding sleeve can slide vertically, also can under the effect of upper needle bearing, around centralizer axis, rotate; Support arm two ends are connected with upper support sliding sleeve, righting arm respectively by removable pin, righting arm two ends are connected with righting arm, lower support cover respectively by removable pin equally, multi-directional ball is equipped with on the top of righting arm, multi-directional ball directly contacts with the borehole wall in down-hole, and roll along the borehole wall, be that this centralizer is realized adaptive critical element; Lower support cover is similar to upper support sliding sleeve, for annulus cylinder, top angle is that three directions of 120 ° are connected with righting arm by removable pin respectively, bottom coordinates with lower locking end cap, endoporus coordinates with the outer ring of lower needle bearing, lower support cover can slide vertically, also can under the effect of lower needle bearing, around centralizer axis, rotate.
Needle bearing unit comprises needle bearing and lower needle bearing; Upper needle bearing outer ring coordinates with the endoporus of upper support sliding sleeve, axially by the shaft shoulder and the upper lock-on connection that connect axis, compresses location; Lower needle bearing outer ring coordinates with the endoporus of lower support cover, axially by the shaft shoulder and the lower locking end cap that connect axis, compresses location; Needle bearing unit is the rotatable adaptive key component of the utility model.
The beneficial effects of the utility model are, simple in structure, easy to operate, and by three being assembled with multi-directional ball on elasticity righting mechanism, and angle is that the righting arm of 120 ° is realized its centralizing function; Under the effect of elasticity righting mechanism and needle bearing unit, can be for the relative rotation with self adaptation well complex situations along axis in can elasticity reducing in well, overcome or reduce centralizer and under complex situations, be subject to torsional deflection in well, improve stability and the overall performance of centralizer, guarantee righting effect, avoid draw-gear or logger to occur jam phenomenon in underground work.
Accompanying drawing explanation
Fig. 1 is that the master of down-hole self adaptation elastic centralizer looks schematic diagram;
Fig. 2 is the schematic top plan view of down-hole self adaptation elastic centralizer;
Fig. 3 is that down-hole self adaptation elastic centralizer is along the cross-sectional schematic of A-A in Fig. 2;
In figure: lock-on connection on 11,12 connect axis, 13 times locking end caps, 21 slip ring position-limiting drums, 22 regulating springs, 23 slip rings, 24 upper support sliding sleeves, 25 support arms, 26 multi-directional ball, 27 righting arms, 28 lower support covers, needle bearing on 31,32 times needle bearings.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment, structure, feature and the effect thereof that the utility model proposes are described, be described in detail as follows:
A down-hole self adaptation elastic centralizer, is characterized in that: comprise centralizer link mechanism 1, elasticity righting mechanism 2, needle bearing unit 3.
Centralizer link mechanism 1 comprises lock-on connection 11, connects axis 12, lower locking end cap 13; Upper lock-on connection 11 upper external thread are connected with draw-gear or logger, inner hole thread be connected axis 12 and connect, simultaneously in order to compress regulating spring 22 and upper needle bearing 31; Connecting axis 12 has the thin and long circular axis of the location shaft shoulder for two ends, and two ends external screw thread connects respectively lock-on connection 11 and lower locking end cap 13, plays connection supporting role.
Elasticity righting mechanism 2 comprises slip ring position-limiting drum 21, regulating spring 22, slip ring 23, upper support sliding sleeve 24, support arm 25, multi-directional ball 23, righting arm 27, lower support cover 28; Slip ring position-limiting drum 21 is thin cylinder, by screw thread and upper lock-on connection 11, screws, and plays protection regulating spring 22 and limit slip ring 23 to act in axial sliding; Regulating spring 22 adopts Rectangular Spring, and two ends are connected with upper lock-on connection 11, slip ring 23 respectively, are the key elements that this centralizer is realized reducing; Slip ring 23 tops are fluted, and in order to regulating spring 22 to be installed, endoporus coordinates with upper lock-on connection 11, are the critical elements that transmits regulating spring 22 end thrusts; Upper support sliding sleeve 24 is annulus cylinder, top coordinates with slip ring 23, slip ring position-limiting drum 21, endoporus coordinates with the outer ring of upper needle bearing 31, bottom angle is that three directions of 120 ° are connected with support arm (25) by removable pin respectively, upper support sliding sleeve 24 can slide vertically, also can under the effect of upper needle bearing 31, around centralizer axis, rotate; Support arm 25 two ends are connected with upper support sliding sleeve 24, righting arm 27 respectively by removable pin, righting arm two ends are connected with righting arm 27, lower support cover 28 respectively by removable pin equally, multi-directional ball 26 is equipped with on the top of righting arm 27, multi-directional ball 26 directly contacts with the borehole wall in down-hole, and roll along the borehole wall, be that this centralizer is realized adaptive critical element; Lower support cover 28 is similar to upper support sliding sleeve 24, for annulus cylinder, top angle is that three directions of 120 ° are connected with righting arm 27 by removable pin respectively, bottom coordinates with lower locking end cap 13, endoporus coordinates with the outer ring of lower needle bearing 32, lower support cover 28 can slide vertically, also can under the effect of lower needle bearing 31, around centralizer axis, rotate.
Needle bearing unit 3 comprises needle bearing 31 and lower needle bearing 32; Upper needle bearing 31 outer rings coordinate with the endoporus of upper support sliding sleeve 24, axially by the shaft shoulder and the upper lock-on connection 11 that connect axis 12, compress location; Lower needle bearing 32 outer rings coordinate with the endoporus of lower support cover 28, axially by the shaft shoulder and the lower locking end cap 13 that connect axis 12, compress location; Needle bearing unit 2 is the rotatable adaptive key components of the utility model.
The course of work of down-hole of the present utility model self adaptation elastic centralizer is as follows:
This centralizer, when G.I.H, makes regulating spring 22 have certain pre compressed magnitude, to obtain the telescopic spring of centralizer elasticity reducing, adapts to the variation of down hole problem or hole diameter; When down-hole borehole diameter has expansion, regulating spring 22 promotes slip ring 23 and upper support sliding sleeve moves axially, and makes support arm 25 strut righting arm 27, is that multi-directional ball 26 contacts with the borehole wall; When down-hole borehole diameter is dwindled, righting arm 27 is compressed and causes the axial travelling backwards of support arm 25, and then compression adjustment spring 22 is realized elasticity reducing; At down-hole draw-gear or logger, be lowered in process, while centralizer being produced to torsion due to situations such as hole anomalies, by the acting in conjunction of peace multi-directional ball 26 and needle bearing unit 3, righting arm 27 can rotate relatively along axis, overcome or reduce centralizer and be subject to torsional deflection, avoid draw-gear or logger to occur jam phenomenon.
Claims (4)
1. a down-hole self adaptation elastic centralizer, is characterized in that: comprise centralizer link mechanism (1), elasticity righting mechanism (2), needle bearing unit (3).
2. down-hole according to claim 1 self adaptation elastic centralizer, is characterized in that: described centralizer link mechanism (1) comprises lock-on connection (11), connects axis (12), lower locking end cap (13); Upper lock-on connection (11) upper external thread is connected with draw-gear or logger, inner hole thread be connected axis (12) and connect, simultaneously in order to compress regulating spring (22) and upper needle bearing (31); Connecting axis (12) has the thin and long circular axis of the location shaft shoulder for two ends, and two ends external screw thread connects respectively lock-on connection (11) and lower locking end cap (13), a connection supporting role.
3. down-hole according to claim 1 self adaptation elastic centralizer, is characterized in that: described elasticity righting mechanism (2) comprises slip ring position-limiting drum (21), regulating spring (22), slip ring (23), upper support sliding sleeve (24), support arm (25), multi-directional ball (23), righting arm (27), lower support cover (28); Slip ring position-limiting drum (21) is thin cylinder, by screw thread and upper lock-on connection (11), screws, and plays protection regulating spring (22) and limit slip ring (23) to act in axial sliding; Regulating spring (22) adopts Rectangular Spring, and two ends are connected with upper lock-on connection (11), slip ring (23) respectively, are the key elements that this centralizer is realized reducing; Slip ring (23) top is fluted, and in order to regulating spring (22) to be installed, endoporus coordinates with upper lock-on connection (11), is the critical element that transmits regulating spring (22) end thrust; Upper support sliding sleeve (24) is annulus cylinder, top coordinates with slip ring (23), slip ring position-limiting drum (21), endoporus coordinates with the outer ring of upper needle bearing (31), bottom angle is that three directions of 120 ° are connected with support arm (25) by removable pin respectively, upper support sliding sleeve (24) can slide vertically, also can under the effect of upper needle bearing (31), around centralizer axis, rotate; Support arm (25) two ends are connected with upper support sliding sleeve (24), righting arm (27) respectively by removable pin, righting arm two ends are connected with righting arm (27), lower support cover (28) respectively by removable pin equally, multi-directional ball (26) is equipped with on the top of righting arm (27), multi-directional ball (26) directly contacts with the borehole wall in down-hole, and roll along the borehole wall, be that this centralizer is realized adaptive critical element; Lower support cover (28) is similar to upper support sliding sleeve (24), for annulus cylinder, top angle is that three directions of 120 ° are connected with righting arm (27) by removable pin respectively, bottom coordinates with lower locking end cap (13), endoporus coordinates with the outer ring of lower needle bearing (32), lower support cover (28) can slide vertically, also can under the effect of lower needle bearing (31), around centralizer axis, rotate.
4. down-hole according to claim 1 self adaptation elastic centralizer, is characterized in that: described needle bearing unit (3) comprises needle bearing (31) and lower needle bearing (32); Upper needle bearing (31) outer ring coordinates with the endoporus of upper support sliding sleeve (24), axially by the shaft shoulder and the upper lock-on connection (11) that connect axis (12), compresses location; Lower needle bearing (32) outer ring coordinates with the endoporus of lower support cover (28), axially by the shaft shoulder and the lower locking end cap (13) that connect axis (12), compresses location; Needle bearing unit (2) is the rotatable adaptive key component of the utility model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340650.6U CN203905848U (en) | 2014-06-25 | 2014-06-25 | Downhole self-adaptive elastic centralizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340650.6U CN203905848U (en) | 2014-06-25 | 2014-06-25 | Downhole self-adaptive elastic centralizer |
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| CN203905848U true CN203905848U (en) | 2014-10-29 |
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| CN201420340650.6U Expired - Fee Related CN203905848U (en) | 2014-06-25 | 2014-06-25 | Downhole self-adaptive elastic centralizer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333631A (en) * | 2018-03-30 | 2018-07-27 | 中国地震局地壳应力研究所 | A kind of body strain instrument erection device |
| CN108625810A (en) * | 2018-06-15 | 2018-10-09 | 焦作市恒利水文地质工程有限责任公司 | A kind of drilling tool external application cutting tool |
| CN110607999A (en) * | 2019-08-20 | 2019-12-24 | 陕西固德石油工程有限公司 | Ball centralizer for casing pipe |
| CN110847860A (en) * | 2019-12-04 | 2020-02-28 | 贵州高峰石油机械股份有限公司 | Casing pipe scraper |
| CN114086943A (en) * | 2022-01-24 | 2022-02-25 | 中国地质科学院勘探技术研究所 | High-precision drilling track measuring nipple and measuring method |
| CN115370311A (en) * | 2022-08-19 | 2022-11-22 | 中国石油天然气集团有限公司 | Diameter-variable deblocking device and method suitable for auxiliary descending of passive magnetic steering tool |
| CN115929223A (en) * | 2023-02-24 | 2023-04-07 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN116771688A (en) * | 2023-08-18 | 2023-09-19 | 利欧集团湖南泵业有限公司 | Axial flow water pump |
-
2014
- 2014-06-25 CN CN201420340650.6U patent/CN203905848U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333631A (en) * | 2018-03-30 | 2018-07-27 | 中国地震局地壳应力研究所 | A kind of body strain instrument erection device |
| CN108333631B (en) * | 2018-03-30 | 2024-04-16 | 应急管理部国家自然灾害防治研究院 | Body strain gauge righting device |
| CN108625810A (en) * | 2018-06-15 | 2018-10-09 | 焦作市恒利水文地质工程有限责任公司 | A kind of drilling tool external application cutting tool |
| CN108625810B (en) * | 2018-06-15 | 2024-04-30 | 焦作市恒利水文地质工程有限责任公司 | External cutting tool for drilling tool |
| CN110607999A (en) * | 2019-08-20 | 2019-12-24 | 陕西固德石油工程有限公司 | Ball centralizer for casing pipe |
| CN110847860A (en) * | 2019-12-04 | 2020-02-28 | 贵州高峰石油机械股份有限公司 | Casing pipe scraper |
| CN114086943A (en) * | 2022-01-24 | 2022-02-25 | 中国地质科学院勘探技术研究所 | High-precision drilling track measuring nipple and measuring method |
| CN115370311A (en) * | 2022-08-19 | 2022-11-22 | 中国石油天然气集团有限公司 | Diameter-variable deblocking device and method suitable for auxiliary descending of passive magnetic steering tool |
| CN115929223A (en) * | 2023-02-24 | 2023-04-07 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN115929223B (en) * | 2023-02-24 | 2023-05-16 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN116771688A (en) * | 2023-08-18 | 2023-09-19 | 利欧集团湖南泵业有限公司 | Axial flow water pump |
| CN116771688B (en) * | 2023-08-18 | 2023-11-14 | 利欧集团湖南泵业有限公司 | Axial flow water pump |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20160625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |