CN108915625A - A kind of drilling machine outer cylinder unlocking mechanism - Google Patents

A kind of drilling machine outer cylinder unlocking mechanism Download PDF

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Publication number
CN108915625A
CN108915625A CN201810918687.5A CN201810918687A CN108915625A CN 108915625 A CN108915625 A CN 108915625A CN 201810918687 A CN201810918687 A CN 201810918687A CN 108915625 A CN108915625 A CN 108915625A
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CN
China
Prior art keywords
pin
cylinder
groove
hole
tube
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Application number
CN201810918687.5A
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Chinese (zh)
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CN108915625B (en
Inventor
谢和平
高明忠
陈领
张茹
张志龙
鲁义强
何志强
李聪
华夏
明传剑
陆彤
彭高友
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Sichuan University
Shenzhen University
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Sichuan University
Shenzhen University
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Priority to CN201810918687.5A priority Critical patent/CN108915625B/en
Publication of CN108915625A publication Critical patent/CN108915625A/en
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Publication of CN108915625B publication Critical patent/CN108915625B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors

Abstract

The present invention discloses a kind of drilling machine outer cylinder unlocking mechanism, including connecting tube, outer cylinder and lock pin, connecting tube, outer cylinder and lock pin are coaxial, lock pin is in connecting tube, connecting tube leading portion outer diameter is less than outer cylinder internal diameter, connecting tube leading portion side wall has through-hole A, the fluted A of lock pin outer wall, the fluted B of outer tube inner wall, it further include pin, length of pin is greater than through-hole A depth, pin is in through-hole A, pin outer end chamfered and/or the side groove B are inclined-plane, the width of groove A is not less than pin inner end width, the width of groove B is not less than pin outer end width, before starting, connecting tube front end is in outer cylinder, pin is in front of groove A, pin inner face is slidably matched with lock pin outer wall, pin outer end is embedded in groove B, after starting, pin inner end is embedded in groove A, the distance of pin inner face to outer tube inner wall is greater than length of pin.Drilling machine outer cylinder unlocking mechanism provided by the invention can lock outer cylinder before drilling machine works, and drilling machine is started to work, and release the constraint to outer cylinder.

Description

A kind of drilling machine outer cylinder unlocking mechanism
Technical field
The present invention relates to drilling extracting core system more particularly to a kind of drilling machine outer cylinder unlocking mechanisms.
Background technique
During oil field prospecting, core is discovery oil-gas Layer and research stratum, source bed, oil reservoirs, cap rock, construction etc. Capsule information lithology, physical property and oil-containing, the gas and water of subterranean strata can directly be understood by the observational study to core Attitude Characteristics.After the investment exploitation of oil field, oil reservoir deposition characteristics, the physical property of reservoir, hole are further studied and recognized by core Gap structure, wetability, relative permeability, lithofacies characteristics, reservoir physics simulation and reservoir water flooding rule;Understanding and grasp difference are opened It hair stage, different water cut stages reservoir water flooding feature, gets remaining oil distribution clear, is designed for oilfield development program, series of strata, well pattern tune Whole and Encryption Well provides scientific basis.
Coring is that subsurface rock is got on ground blockingly using special coring tool in drilling process, this The blocking rock of kind is called core, and the various properties of rock can be measured by it, and intuitively Study of The Underground construction and rock are heavy Product environment, understands fluid properties therein etc..In mineral exploration and development process, need by geological design stratigraphic horizon and Depth carries out drilling work, the tripping in coring tool into well, the rock sample drilled through out.
Before coring, coring equipment need to be integrally put into drilling well, after coring equipment reaches operating position, coring equipment rear portion Fixed, the continuation of front operating mechanism constraint relief works forward.
Summary of the invention
The present invention is intended to provide a kind of drilling machine outer cylinder unlocking mechanism, can lock outer cylinder, core drill before core drilling rig works Machine is started to work, and the constraint to outer cylinder is released.
In order to achieve the above objectives, the technical solution adopted by the present invention is as follows:
Drilling machine outer cylinder unlocking mechanism disclosed by the invention, including connecting tube, outer cylinder and lock pin, connecting tube, outer cylinder and lock pin Coaxially, for lock pin in connecting tube, connecting tube leading portion outer diameter is less than outer cylinder internal diameter, and connecting tube leading portion side wall has through-hole A, the lock pin The fluted A of outer wall, it further includes pin, length of pin is big that the fluted B of outer tube inner wall, groove A and groove B, which are annular groove, In through-hole A depth, for pin in through-hole A, pin outer end chamfered and/or the side groove B are inclined-plane, the width of groove A Degree is not less than pin inner end width, and the width of groove B is not less than pin outer end width, before starting, connecting tube front end in outer cylinder, In front of groove A, pin inner face is slidably matched pin with lock pin outer wall, and pin outer end is embedded in groove B, after starting, pin Inner end is embedded in groove A, and the distance of pin inner face to outer tube inner wall is greater than length of pin.
Further, the connecting tube rear connects interlocking mechanism.
Further, the lock pin rear connects actuating mechanism.
Further, the lock pin rear is connected with locking member A, and the connecting tube rear is connected with locking member B, outside locking member A Diameter is greater than locking member B internal diameter, and locking member A is at the rear locking member B.
Further, connection drill bit and hydraulic motor rotor in front of the outer cylinder.
Further, the outer end chamfer of the pin and the angle of radial section angle and the side groove B and radial section are mutual It is remaining.
Further, the side the groove A is inclined-plane.
Further, the pin includes ailhead and nail body, and through-hole A is correspondingly provided with ailhead section and nail figure.
Further, the ailhead length is less than ailhead section depth, and the nail body length is greater than nail figure depth.
Further, the through-hole A is circular hole, and through-hole A has 3, the axial distance phase of the through-hole A hole heart to connecting tube front end Together, 3 through-hole A are circumferentially uniformly distributed.
The invention has the advantages that:
1, before drilling machine starting, pin is embedded in groove B, can fixed outer cylinder;
2, drilling machine starts, and lock pin forward slip, pin inner end is slidably matched with lock pin outer wall, slide into forward as groove A and For pin in same axial position, outer cylinder utilizes self gravity, generates forward pressure, and groove B and dowel contact face are inclined-plane, Groove B squeezes pin outer end face, and pin is exited from groove B, is pressed into groove A, releases the constraint to outer cylinder;
3, groove A and groove B is annular groove, and pin is made to be easier to be embedded in groove A or groove B;
4, locking member A and locking member B cooperates, and can limit the distance of lock pin forward movement;
5, through-hole A has 3, is circumferentially uniformly distributed, and locking outer cylinder is stronger;
6, ailhead, nail body and ailhead section and the design for following closely figure, can prevent pin from skidding off from through-hole A.
Detailed description of the invention
Fig. 1 is schematic diagram before the present invention starts;
Fig. 2 is schematic diagram after present invention starting;
Fig. 3 is pin schematic diagram;
Fig. 4 is connecting tube schematic diagram;
Fig. 5 is lock pin schematic diagram;
In figure:1- lock pin, 11- groove A, 12- interconnecting piece, 13- work department, the insertion section 14-, 2- connecting tube, 21- through-hole A, 211- ailhead section, 212- nail figure, the rear portion 22- linkage section, 23- go out liquid section, 24- section, the front 25- linkage section, 26- through-hole containing nail B, 27- diversion trench, 3- outer cylinder, 31- groove B, 4- pin, 41- ailhead, 42- follow closely body.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into Row is further described.
As shown in Figure 1, drilling machine outer cylinder unlocking mechanism disclosed by the invention, including connecting tube 2, outer cylinder 3 and lock pin 1, connection Pipe 2, outer cylinder 3 and lock pin 1 are coaxial, and for lock pin 1 in connecting tube 2,2 leading portion outer diameter of connecting tube is less than 3 internal diameter of outer cylinder, before connecting tube 2 It is circular hole that section side wall, which has through-hole A21, through-hole A21, and through-hole A21 has 3, the axial distance of the through-hole A21 hole heart to 2 front end of connecting tube Identical, 3 through-hole A21 are circumferentially uniformly distributed, and 1 outer wall of lock pin has annular groove A11, and the side groove A11 is inclined-plane, outer cylinder 3 Inner wall has annular groove B31, further includes pin 4, and 4 length of pin is greater than through-hole A21 depth, 4 numbers of pin and A21 number of through-hole Identical, pin 4 is in through-hole A21,4 outer end chamfered of pin, and the side groove B31 is inclined-plane, the outer end chamfer of pin 4 and radial direction The angle of section angle and the side groove B31 and radial section is mutually remaining, and pin 4 is including ailhead 41 and follows closely body 42, including ailhead 41 Side, through-hole A21 is corresponding to be divided into ailhead section 211 and follows closely figure 212, and including ailhead section 211,211 internal diameter of ailhead section is not less than 41 outer diameter of ailhead, for nail 212 internal diameter of figure not less than nail 42 outer diameter of body, 41 length of ailhead is less than 211 depth of ailhead section, and nail body 42 is long Degree is greater than nail 212 depth of figure, and the width of groove A11 is not less than 4 inner end width of pin, and the width of groove B31 is not less than pin 4 Outer end width, 1 rear of lock pin are connected with locking member A, and 2 rear of connecting tube is connected with locking member B, and locking member A outer diameter is greater than in locking member B Diameter, locking member A can limit the distance that lock pin 1 moves forward in the rear locking member B, locking member A and locking member B mutual cooperation, make No longer forward slip, 2 rear of connecting tube connects interlocking mechanism after lock pin 1 reaches operating position, and 1 rear of lock pin connects starter motor Structure connects drill bit and hydraulic motor rotor in front of outer cylinder 3.
Before starting, 2 front end of connecting tube is in outer cylinder 3, and pin 4 is in front of groove A11,4 inner face of pin and 1 outer wall of lock pin It is slidably matched, 4 outer end of pin is embedded in groove B31, and after starting, 4 inner end of pin is embedded in groove A11, and 4 inner face of pin is outside The distance of 3 inner walls of cylinder is greater than 4 length of pin.
As shown in figure 3,4 length of pin is 17.3mm, wherein 41 length of ailhead is 4.8mm, and nail 42 length of body is 12.5mm, 41 outer diameter of ailhead is 12mm, and nail 42 outer diameter of body is 10mm, and there is the chamfering of 2.5mm × 45 ° in the inside and outside end face of pin 4.
As shown in figure 4, connecting tube 2 includes connecting tube leading portion and connecting tube back segment, connecting tube back segment is followed successively by from back to front Rear portion linkage section 22 and out liquid section 23, connecting tube leading portion are followed successively by the section 24 containing nail and front linkage section 25 from back to front, and rear portion connects It connects 22 internal diameter of section and is greater than 23 internal diameter of liquid section, linkage section 22 outer diameter in rear portion is greater than 23 outer diameter of liquid section, 22 front end of rear portion linkage section Face ecto-entad turns forward, and is 45 ° with radial section angle, and rear portion linkage section 22 has internal screw thread, and liquid section 23 has through-hole out B26, through-hole B26 are relief hole, and 23 outer diameter of liquid section is 94.5mm out, and internal diameter of the liquid section 23 at the rear through-hole B26 is 74mm out, out Internal diameter of the liquid section 23 in front of through-hole B26 is 72mm, through-hole B26 front end face and 23 inner wall of liquid section out by with radial section angle It being connected for 76 ° of inclined-planes, through-hole B26 is strip-shaped hole, and through-hole B26 width is 16mm, and through-hole B26 front and back sides are semicircle cambered surface, Semicircle cambered surface radius is 8mm, and 23 outer wall of liquid section is provided with diversion trench 27 out, and 27 width of diversion trench is 15mm, and diversion trench 27 is in through-hole The front of B26, through-hole B26 and diversion trench 27 have 2, are circumferentially uniformly distributed, and connecting tube leading portion internal diameter is 50mm, out liquid 23 inner walls of section connects with 24 inner wall of section containing nail by the inclined-plane for being 45 ° with radial section angle, contain follow closely 24 inner wall of section and with radial direction In the inclined-plane link position of 45 ° of angles in liquid section 23 out, through-hole A21 is in the section 24 containing nail, 24 pipe thickness of section containing nail in section 14mm, through-hole A21 points are ailhead section 211 and nail figure 212, and 211 depth 5mm of ailhead section follows closely 212 depth 9mm of figure, ailhead section 211 Aperture is 12.1mm, and nail 212 aperture of figure is 10mm, and through-hole A21 has 3, is circumferentially uniformly distributed, and 24 outer diameter of section containing nail is 78mm, 25 outer diameter of front linkage section are 67.9mm, and the 24 front end face ecto-entad of section containing nail tilts backwards, and are with radial section angle 15 °, linkage section 22 length in rear portion is 155mm, and 23 length of liquid section is 35mm out, and the segment length 24 containing nail is 25mm, front linkage section Length 25 is 65mm, and front linkage section 25 has external screw thread.
As shown in figure 5,1 internal diameter of lock pin is 32mm, lock pin 1 is 220mm long, and lock pin 1 is sequentially connected portion 12, work from back to front Portion 13 and insertion section 14, interconnecting piece 12 is 38mm long, and 12 outer diameter of interconnecting piece is 38mm, and 12 outer wall of interconnecting piece has the spiral shell of M40 × 1.5 Line, non-threaded no more than the region of 8mm apart from 13 front end face of work department on 12 outer wall of interconnecting piece, a length of 63mm of work department 13, outside Diameter is 50mm, and groove A11 is 22.5mm, interconnecting piece 12 apart from 1 axial line distance of lock pin in 13 outer wall of work department, the bottom surface groove A11 Front end is 59mm, groove A11 opening width 25.5mm, the bottom surface groove A11 and work department 13 apart from groove A11 opening front end distance Outer wall is connect by the inclined-plane for being 45 ° with radial section angle, insertion section 14 a length of 98mm, outer diameter 48mm.
Before drilling machine starting, pin 4 is embedded in groove B31, can fixed outer cylinder 3;Drilling machine starting, 1 forward slip of lock pin, pin 4 inner ends are slidably matched with 1 outer wall of lock pin, and when groove A11 is slided into forward with pin 4 in same axial position, outer cylinder 3 is using certainly Body gravity, generates forward pressure, and groove B31 and 4 contact surface of pin are inclined-plane, and groove B31 squeezes 4 inclined-plane of pin, pin 4 from It exits, is pressed into groove A11 in groove B31, release the constraint to outer cylinder 3.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art All it should fall within the scope of protection of the appended claims of the present invention.

Claims (10)

1. a kind of drilling machine outer cylinder unlocking mechanism, it is characterised in that:Including connecting tube (2), outer cylinder (3) and lock pin (1), connecting tube (2), coaxially, in connecting tube (2), connecting tube (2) leading portion outer diameter is less than in outer cylinder (3) lock pin (1) for outer cylinder (3) and lock pin (1) Diameter, connecting tube (2) leading portion side wall have through-hole A (21), the fluted A of lock pin (1) outer wall (11), and outer cylinder (3) inner wall has Groove B (31) further includes pin (4), and pin (4) length is greater than through-hole A (21) depth, and pin (4) is in through-hole A (21), institute It states pin (4) outer end chamfered and/or (31) side groove B is inclined-plane, the width of groove A (11) is not less than in pin (4) Width is held, the width of groove B (31) is not less than pin (4) outer end width, and before starting, connecting tube (2) front end is interior in outer cylinder (3), In front of groove A (11), pin (4) inner face is slidably matched pin (4) with lock pin (1) outer wall, and pin (4) outer end is embedded in groove In B (31), after starting, pin (4) inner end is embedded in groove A (11), and the distance of pin (4) inner face to outer cylinder (3) inner wall is big In pin (4) length.
2. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:Connecting tube (2) the rear connection connection Latch mechanism.
3. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:Lock pin (1) the rear connection starting Mechanism.
4. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:Lock pin (1) rear is connected with locking Part A, connecting tube (2) rear are connected with locking member B, and locking member A outer diameter is greater than locking member B internal diameter, and locking member A is in locking member B Rear.
5. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:Drill bit is connected in front of the outer cylinder (3) And hydraulic motor rotor.
6. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:The outer end chamfer of the pin (4) and diameter It is mutually remaining to the angle of section angle and (31) side groove B and radial section.
7. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:(11) side groove A is inclined-plane.
8. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:The pin (4) includes ailhead (41) With nail body (42), through-hole A (21) is correspondingly provided with ailhead section (211) and nail figure (212).
9. drilling machine outer cylinder unlocking mechanism according to claim 8, it is characterised in that:Ailhead (41) length is less than ailhead Section (211) depth, nail body (42) length are greater than nail figure (212) depth.
10. drilling machine outer cylinder unlocking mechanism according to claim 1, it is characterised in that:The through-hole A (21) is circular hole, is led to Hole A (21) has 3, and the axial distance of through-hole A (21) the hole heart to connecting tube (2) front end is identical, and 3 through-hole A (21) are circumferentially equal Even distribution.
CN201810918687.5A 2018-08-13 2018-08-13 A kind of drilling machine outer cylinder unlocking mechanism Active CN108915625B (en)

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CN201810918687.5A CN108915625B (en) 2018-08-13 2018-08-13 A kind of drilling machine outer cylinder unlocking mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810918687.5A CN108915625B (en) 2018-08-13 2018-08-13 A kind of drilling machine outer cylinder unlocking mechanism
PCT/CN2018/109031 WO2020034361A1 (en) 2018-08-13 2018-09-30 Unlocking mechanism of drilling rig outer barrel

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7350596B1 (en) * 2006-08-10 2008-04-01 Attaya James S Methods and apparatus for expanding the diameter of a borehole
CN203362085U (en) * 2013-06-13 2013-12-25 中国海洋石油总公司 Circumferential locking device for sediment stratum coring
CN104179469A (en) * 2014-08-07 2014-12-03 中国海洋石油总公司 Active pressure maintaining and coring tool and use method thereof
CN204200132U (en) * 2014-08-07 2015-03-11 中国海洋石油总公司 A kind of initiatively pressurize coring tool
CN106014315A (en) * 2016-07-18 2016-10-12 中国石油集团西部钻探工程有限公司 Hydraulic locking-type coring apparatus
US20180119511A1 (en) * 2014-12-10 2018-05-03 Baker Hughes, A Ge Company, Llc Radially Expandable Ratcheting Body Lock Ring for Production Packer Release

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9995090B2 (en) * 2014-09-19 2018-06-12 Baker Hughes, A Ge Company, Llc Completion method featuring a thermally actuated lock assembly for a telescoping joint
CN108286416B (en) * 2017-12-07 2020-03-20 中国海洋石油集团有限公司 Conventional coring tool for soft formation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7350596B1 (en) * 2006-08-10 2008-04-01 Attaya James S Methods and apparatus for expanding the diameter of a borehole
CN203362085U (en) * 2013-06-13 2013-12-25 中国海洋石油总公司 Circumferential locking device for sediment stratum coring
CN104179469A (en) * 2014-08-07 2014-12-03 中国海洋石油总公司 Active pressure maintaining and coring tool and use method thereof
CN204200132U (en) * 2014-08-07 2015-03-11 中国海洋石油总公司 A kind of initiatively pressurize coring tool
US20180119511A1 (en) * 2014-12-10 2018-05-03 Baker Hughes, A Ge Company, Llc Radially Expandable Ratcheting Body Lock Ring for Production Packer Release
CN106014315A (en) * 2016-07-18 2016-10-12 中国石油集团西部钻探工程有限公司 Hydraulic locking-type coring apparatus

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WO2020034361A1 (en) 2020-02-20
CN108915625B (en) 2019-09-10

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