CN108798574A - A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function - Google Patents
A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function Download PDFInfo
- Publication number
- CN108798574A CN108798574A CN201710296047.0A CN201710296047A CN108798574A CN 108798574 A CN108798574 A CN 108798574A CN 201710296047 A CN201710296047 A CN 201710296047A CN 108798574 A CN108798574 A CN 108798574A
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- China
- Prior art keywords
- folded spring
- folded
- suspension
- bearing
- gland
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
Abstract
The present invention discloses a kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function, including top connection, folded spring set, folded spring group, guide blot, folded spring gland, upper bearing (metal) to, ball, suspension mandrel, lower bearing be to, suspension joint.Folded spring group, guide blot and the stacked spring shock absorption assembly of folded spring gland group that folded spring set, pairing combine are positioned over intracavitary in top connection, and are provided with initial precompression, and during drilling extracting core, cushioning effect is played to inner cylinder.The fluctuating range that inner cylinder and core axial compressive load can be effectively reduced by using the present apparatus, protects core column, reduces destruction of the axial vibrations to core column, reduces and block up core probability, improves coring recovery rate.
Description
Technical field
It is specifically a kind of with shock-absorbing function the present invention relates to oil, natural gas exploration barrel of core-drilling tool technical field
Duplex bearing drilling extracting core suspension arrangement.
Background technology
During drilling extracting core, is relied primarily in coring bit rock break-off process and rock axial impact and circumferential direction are cut
It cuts, wherein axial impact vibrations are advantageous formation rock broken rock, and still, excessive axial vibrations are to same into cylinder core
When also will produce destruction, be unfavorable for core Cheng Zhu, increase and block up core probability in location of the coring procedure.
Chinese utility model patent " a kind of closed coring tool duplex bearing suspension arrangement ", the patent No.
" 201320014176.3 ", publication date " 2013-08-14 ", it is proposed that a kind of coring tool duplex bearing suspension arrangement, packet
It includes top connection, support thrust bearing, hollow divide water suspended axle, pressure-bearing thrust bearing, thrust axis support and positioning joint；Its
In：The boss for dividing water suspended axle upper end to have diameter convex divides below the boss of water suspended axle and is suspended on by pressure-bearing thrust bearing
On thrust axis support inner face, divides above water suspended axle boss and rotatable engagement is constituted by support thrust bearing and top connection；Point
Water suspended axle lower end is connect with positioning joint, and water suspended axle upper end is divided to pass through together with support thrust bearing and pressure-bearing thrust bearing
Thrust axis support is fixedly connected in top connection.The device for realizing closed coring tool " bitubular single action ", from certain journey
It solves the problems, such as that inner cores cylinder is circumferentially rotated relative to core on degree, reduces stifled core probability and occur, but be mainly used in closed
Coring tool does not promote the use of conventional coring tool, and the axial vibrations without solving the problems, such as inner cylinder.
Invention content
In response to the problems existing in the prior art, the purpose of the present invention is to provide one kind suitable for conventional drilling coring tool
Duplex bearing drilling extracting core suspension arrangement with shock-absorbing function.
Technical scheme of the present invention includes：
A kind of duplex bearing drilling extracting core suspension arrangement device with shock-absorbing function, including top connection, bearing, suspension mandrel and suspension
Connector, wherein：Top connection constitutes the outer barrel of hollow structure, the upper inside wall in top connection and suspension after being connected with suspension joint
The lower part of inner nosepiece wall is respectively provided with cut-off step, and cavity is formed between cut-off step, and setting is by folded spring set, folded spring gland in cavity
The inner cylinder that hollow structure is constituted after being sequentially connected with suspension mandrel, bearing, constitutes rotatable engagement between inner cylinder and outer barrel,
The two is connected and composed by external guide blot and guide groove after folded spring set and folded spring gland axial direction grafting and slides axially, is all
Coordinate to limit, and spring group is folded in folded spring set and the setting of folded spring gland pairing end, after folded spring gland is fixedly connected with suspension mandrel
Bearing groove is set outside it, and bearing is placed in bearing groove.
Said program further comprises：Folded spring group is placed in folded spring set inner cavity, and folded spring gland, which is inserted into, to be folded in spring set and push down folded
Spring group；There are two symmetrical bolts hole for folded spring gland, are threadedly coupled with guide blot, and guide blot threaded portion, which screws in, folds spring pressure
Lid, folded spring set ontology are opened there are two symmetrical guide groove, and guide blot socket cap part is located at folded spring and covers in guide groove.
Top connection lower end is threadedly coupled with suspension joint, and folded spring gland lower end is connect with suspension spindle thread.
For folded spring group by 1-4 folded springs to being combined into, bearing is two groups of axially spaced settings.
It is an advantage of the invention that：By applying the present apparatus, during drilling extracting core, the cushioning effect of folded spring group, drop are utilized
The fluctuating range of low inner cylinder and core axial compressive load protects core column, effectively reduces axial vibrations to core column
Destruction, reduce and block up core probability, improve coring recovery rate.And the present apparatus, it is mounted in coring tool inner cylinder assembly top, outer barrel
Inside assembly, while not influencing coring bit rock breaking efficiency, coring tool inner cylinder axial vibrations wave amplitude is reduced, it can be effective
Reduce the occurrence of core is blocked up in location of the coring procedure.
Description of the drawings
Fig. 1 is a kind of duplex bearing drilling extracting core suspension device structure diagram with shock-absorbing function of the present invention.
Fig. 2 is the cooperation schematic diagram of the inner cylinder body portion of the present invention.
In figure：1. top connection, 2. folded spring sets, 3. folded spring groups, 4. guide blots, 5. folded spring glands, 6. upper bearing (metal)s, 7. rollings
Pearl, 8. suspension mandrels, 9. lower bearings, 10. suspension joints, 11. folded springs cover guide groove.
Specific implementation mode
With reference to the accompanying drawings of the specification and specific implementation mode, the invention will be further described.
Referring to Fig.1, a kind of duplex bearing drilling extracting core suspension device structure diagram with shock-absorbing function, including top connection 1,
Folded spring set 2, folded spring group 3, guide blot 4, folded spring gland 5, upper bearing (metal) 6, ball 7, suspension mandrel 8, lower bearing 9 and suspension joint
10。
Folded spring set 3 is placed in 1 inner cavity of top connection, and places the folded spring group 3 of three groups of pairings combination, folds spring and covers 3 lower ends and folded spring
Gland 5 is combined and through guide blot 5 and carries out circumferential limit；Folded 5 lower end of spring gland is connected through a screw thread with suspension mandrel 8；It is outstanding
Keep 8 ontology of axis in mind and be machined with bearing retainer boss, upper bearing (metal) 6 and lower bearing 9 is respectively set up and down in boss, and hangs on suspension and connect
On first 10 pressure-bearing surface, suspension 8 lower end of mandrel is sequentially connected return connector and coring inner cylinder assembly by screw thread.
Referring to Fig.1,2, fold spring set 2, folded spring group 3, guide blot 4 and the stacked spring damping of 5 groups of folded spring gland that pairing combines
Assembly；Folded spring group 3 is positioned over folded spring and covers 2 inner cavities, and folded spring gland 5 is inserted into folded spring set 2 and pushes down folded spring group 3；There are two folded spring glands 5
Symmetrical bolt hole is threadedly coupled with guide blot 4, and 4 threaded portion of guide blot is completely screwed into folded spring gland 5, only reserves circle
Column cap part；Folded spring covers 2 ontologies and opens there are two symmetrical guide groove 11, and 4 socket cap of guide blot is inserted into folded spring and covers 2 guide grooves
It is interior, it limits folded spring set 2 and circumferentially rotates, folded spring set 2 is enable to slide axially along the combination of folded spring gland 5 and guide blot 4；Folded spring pressure
5 lower end of lid is threadedly coupled with suspension mandrel 8.
1 inner cavity of top connection is designed to place folded spring shock absorption assembly, and embedded SMA actuators have cut-off step, is pressed on folded spring set 2
Upper surface, folded spring set 2 can be slided up and down along 1 inner wall of top connection；1 lower end of top connection is threadedly coupled with suspension joint 10, and suspension connects
First 10 lower end is connected through a screw thread with coring outer barrel.
Folded spring shock absorption assembly is provided with initial precompression, during drilling extracting core, coring inner cylinder under bit pressure effect by
Axial compressive force is transmitted to folded spring gland 5 by hanging mandrel 8, after the axial compressive force is more than the initial pressure value of setting, folds spring
Gland 5 moves up, and folded spring group 3 is compressed and stores energy；When the axial compressive force that lower tub assembly is subject to reduces, less than folding, spring is initial
When precompression, folded spring gland 5 moves down, and folded spring group 3 is extended and released energy, and effectively reduces the wave that inner cylinder is changed by axial compressive force
Width plays cushioning effect to core, reduces and block up core probability.
Claims (4)
1. a kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function, including top connection, bearing, suspension mandrel and suspension connect
Head, it is characterised in that：Top connection connected with suspension joint after constitute hollow structure outer barrel, top connection upper inside wall and
The lower part of suspension joint inner wall is respectively provided with cut-off step, and cavity is formed between cut-off step, and setting is by folded spring set, folded spring in cavity
Gland and suspension mandrel, bearing constitute the inner cylinder of hollow structure after being sequentially connected, rotation is constituted between inner cylinder and outer barrel
Cooperation, wherein connected and composed the two by external guide blot and guide groove after folded spring set and folded spring gland axial direction grafting
It slides axially, circumferential limit cooperation, and spring group is folded in folded spring set and the setting of folded spring gland pairing end, folds spring gland and suspension mandrel
Bearing groove is set after being fixedly connected outside it, and bearing is placed in bearing groove.
2. the duplex bearing drilling extracting core suspension arrangement according to claim 1 with shock-absorbing function, it is characterised in that：Folded spring group
It is placed in folded spring set inner cavity, folded spring gland, which is inserted into, to be folded in spring set and push down folded spring group；Folded spring gland there are two symmetrical bolt hole, with
Guide blot is threadedly coupled, and guide blot threaded portion, which screws in, folds spring gland, and folded spring set ontology is opened there are two symmetrical guide groove,
Guide blot socket cap part is located at folded spring and covers in guide groove.
3. the duplex bearing drilling extracting core suspension arrangement according to claim 2 with shock-absorbing function, it is characterised in that：Top connection
Lower end is threadedly coupled with suspension joint, and folded spring gland lower end is connect with suspension spindle thread.
4. the duplex bearing drilling extracting core suspension arrangement according to claim 1,2 or 3 with shock-absorbing function, it is characterised in that：
For folded spring group by 1-4 folded springs to being combined into, bearing is two groups of axially spaced settings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296047.0A CN108798574A (en) | 2017-04-28 | 2017-04-28 | A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296047.0A CN108798574A (en) | 2017-04-28 | 2017-04-28 | A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108798574A true CN108798574A (en) | 2018-11-13 |
Family
ID=64070307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710296047.0A Pending CN108798574A (en) | 2017-04-28 | 2017-04-28 | A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798574A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173257A (en) * | 2019-07-11 | 2019-08-27 | 中石化石油工程技术服务有限公司 | Borehole logging tool guiding and damping device |
| CN113738298A (en) * | 2021-09-10 | 2021-12-03 | 中国地质大学（北京） | Pressure-maintaining coring device |
| CN113982515A (en) * | 2021-10-28 | 2022-01-28 | 中国地质大学（北京） | Pressure-maintaining coring device |
| CN114000843A (en) * | 2021-10-19 | 2022-02-01 | 中国海洋石油集团有限公司 | Coring tool suitable for ultra-high temperature high pressure well drilling |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1160409A (en) * | 1966-09-28 | 1969-08-06 | Mindrill Ltd | Core Drills. |
| US6341656B1 (en) * | 1997-07-08 | 2002-01-29 | Dresser Industries, Inc. | Core barrel |
| CN2740767Y (en) * | 2004-08-19 | 2005-11-16 | 李中华 | Pressure coring device |
| CN102155178A (en) * | 2011-04-08 | 2011-08-17 | 苏州市苏新探矿工具厂 | Large-diameter coalbed methane core drill bit |
| CN202914002U (en) * | 2012-10-09 | 2013-05-01 | 中国地质科学院勘探技术研究所 | Ball suspension type core catcher coring drill |
| US20130105227A1 (en) * | 2007-03-03 | 2013-05-02 | Longyear Tm, Inc. | High productivity core drilling system |
| CN203130005U (en) * | 2013-01-11 | 2013-08-14 | 中国石油化工股份有限公司 | Coring tool core-blocking pressure-rising warning device |
| CN206928926U (en) * | 2017-04-28 | 2018-01-26 | 中石化石油工程技术服务有限公司 | A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function |
-
2017
- 2017-04-28 CN CN201710296047.0A patent/CN108798574A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1160409A (en) * | 1966-09-28 | 1969-08-06 | Mindrill Ltd | Core Drills. |
| US6341656B1 (en) * | 1997-07-08 | 2002-01-29 | Dresser Industries, Inc. | Core barrel |
| CN2740767Y (en) * | 2004-08-19 | 2005-11-16 | 李中华 | Pressure coring device |
| US20130105227A1 (en) * | 2007-03-03 | 2013-05-02 | Longyear Tm, Inc. | High productivity core drilling system |
| CN102155178A (en) * | 2011-04-08 | 2011-08-17 | 苏州市苏新探矿工具厂 | Large-diameter coalbed methane core drill bit |
| CN202914002U (en) * | 2012-10-09 | 2013-05-01 | 中国地质科学院勘探技术研究所 | Ball suspension type core catcher coring drill |
| CN203130005U (en) * | 2013-01-11 | 2013-08-14 | 中国石油化工股份有限公司 | Coring tool core-blocking pressure-rising warning device |
| CN206928926U (en) * | 2017-04-28 | 2018-01-26 | 中石化石油工程技术服务有限公司 | A kind of duplex bearing drilling extracting core suspension arrangement with shock-absorbing function |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173257A (en) * | 2019-07-11 | 2019-08-27 | 中石化石油工程技术服务有限公司 | Borehole logging tool guiding and damping device |
| CN110173257B (en) * | 2019-07-11 | 2024-04-12 | 中石化石油工程技术服务有限公司 | Guiding and damping device for open hole logging instrument |
| CN113738298A (en) * | 2021-09-10 | 2021-12-03 | 中国地质大学（北京） | Pressure-maintaining coring device |
| CN114000843A (en) * | 2021-10-19 | 2022-02-01 | 中国海洋石油集团有限公司 | Coring tool suitable for ultra-high temperature high pressure well drilling |
| CN114000843B (en) * | 2021-10-19 | 2024-02-23 | 中国海洋石油集团有限公司 | Coring tool suitable for well drilling of super temperature high pressure well |
| CN113982515A (en) * | 2021-10-28 | 2022-01-28 | 中国地质大学（北京） | Pressure-maintaining coring device |
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