CN104153734B - Hydraulic pressure type coring tool - Google Patents

Hydraulic pressure type coring tool Download PDF

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Publication number
CN104153734B
CN104153734B CN201410427660.8A CN201410427660A CN104153734B CN 104153734 B CN104153734 B CN 104153734B CN 201410427660 A CN201410427660 A CN 201410427660A CN 104153734 B CN104153734 B CN 104153734B
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CN
China
Prior art keywords
core
surges
seat
sealed
pressurized
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Application number
CN201410427660.8A
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Chinese (zh)
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CN104153734A (en
Inventor
李伟成
陈晓彬
陈立
姚建林
刘彬
何超
胡畔
唐聪
陈文才
Original Assignee
四川川庆石油钻采科技有限公司
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Priority to CN201410427660.8A priority Critical patent/CN104153734B/en
Publication of CN104153734A publication Critical patent/CN104153734A/en
Application granted granted Critical
Publication of CN104153734B publication Critical patent/CN104153734B/en

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Abstract

The invention discloses a hydraulic pressure type coring tool which comprises a safe joint, a hydraulic pressurizing device, an outer cylinder assembly, an inner cylinder assembly and a core catcher assembly. The safe joint is of a big-end-up cone shape, the bottom and the top of the safe joint are opened, the middle of the safe joint is connected with the outer cylinder assembly through threads, the lower portion of the safe joint is connected with the hydraulic pressurizing device through threads, the inner cylinder assembly is hung below the hydraulic pressurizing device through a hanging device, the core catcher assembly is arranged on the lower side of the inner cylinder assembly, and the hydraulic pressurizing device, the inner cylinder assembly and the core catcher assembly are located in the outer cylinder assembly. After the hydraulic pressurizing device exerts hydraulic pressure, the hanging device falls off, the inner cylinder assembly and the core catcher assembly fall along with the hanging device, and the core catcher assembly clamps under the action of hydraulic pressure to achieve the aim of completely wrapping a smashing core. When plastic deformation of a core sealing sleeve reaches a certain degree, drilling fluid is discharged from a gap between the core sealing sleeve and a connection sleeve, so that the core can not be compressed excessively, and integrity of the core is guaranteed.

Description

A kind of pressurized coring tool that surges

Technical field

The invention belongs to drilling and coring delivery field is and in particular to a kind of pressurized coring tool that surges.

Background technology

In soft, broken formation coring operation, it is primarily present a following difficult problem: formation cementation thing low intensity causes rock core It is difficult to shape, be difficult to enter coring tool.When rock core cement has compared with strong retraction, rock core under water-base drilling fluid erosion Bearing capacity reduces, it is broken easily to cave in, and causes the stifled heart, the generation of mill heart phenomenon, thus affecting CORING TECHNOLOGY index.In cementing pine During scattered, heterogeneity conglomeratic sand conglomerate is cored, core bit and tool vibration easily cause rock core fracture, crush.The going out of rock core During cylinder, because core column stress changes, rock core easily caves in broken, reduces the sampling model of rock core geological analysis Enclose, reduce the accuracy of geologic information.Because the presence of these difficult problems is so that difficult in soft, broken formation coring operation Degree is big, core recovery is relatively low.In prior art for coring tool used in soft, broken formation coring operation still relatively For backwardness, average core recovery is extremely low, adversely affects for geological prospecting.Therefore, adapt in the urgent need to research and development are a kind of Soft, broken formation coring tool, to meet field demand.

Content of the invention

Present invention aim at providing a kind of structure simple, easy to use, soft, broken formation can be effectively improved and core receipts Obtain the pressurized coring tool that surges of rate.

For realizing above-mentioned technical purpose, using technical scheme once:

A kind of pressurized coring tool that surges, including safety joint, the pressue device that surges, outer barrel component, interior cartridge module and Core grabber assembly, wherein safety joint are bottom and the up big and down small cone of top hollow, with outer tube group in the middle part of safety joint Part is threaded, threadeded with the pressue device that surges in bottom;Interior cartridge module hangs on, by suspension arrangement, the pressue device that surges Lower section, core grabber assembly is arranged at below interior cartridge module;Pressue device, interior cartridge module and the core grabber assembly of surging is located at outer tube group In part.After the pressue device that surges applies hydraulic pressure, suspension arrangement comes off, and interior cartridge module is removed with suspension arrangement one with core grabber assembly Fall, core grabber assembly clamping in the presence of hydraulic pressure, realize the purpose fully wrapped around to broken rock core.

For making the present invention be more suitable for practicality, it is further improved below:

The described pressue device that surges includes heart axle and sealed ball seat, and mandrel sidewall medium position is provided with least one pressure release Hole, is provided with least one putting hole below relief hole;Sealed ball seat is arranged inside heart axle by pin, by relief hole with put Put hole sealing.When needing pressurization, inwardly put into pressurization steel ball from safety joint, after careful axle, fall into sealed ball seat, pressurize steel Ball forms sealing with sealed ball seat, and sealed ball seat cuts short pin under hydraulic action, under sealed ball seat is under self gravitation effect, Fall, exposes relief hole and putting hole.

Described relief hole is set to four.

Described putting hole is set to two.

Described suspension arrangement includes hanging steel ball, inner core connector, single current valve seat and sealed steel ball, inner core connector bottom Be connected with interior cartridge module, inner core connector inside sidewalls face is provided with and hangs the one-to-one groove of steel ball, hang steel ball with Putting hole corresponds, and hangs steel ball half and is located at putting hole, half positioned at groove;Be additionally provided with the wall of inner core connector side to A few circulation port, circulation port is located at below sealed ball seat;Single current valve seat is arranged at inner core connector bottom, and sealed steel ball is arranged Above single current valve seat, form ball-and-seat.

Described circulation port is set to four.

Described relief hole and circulation port are downward-sloping from inside to outside, to prevent drilling fluid from blowing back into inner core.

Described core grabber assembly includes adapter sleeve, rock core sealing shroud, clip and clip seat, and adapter sleeve side wall is provided with least Two are arranged inside adapter sleeve, pressure holes are sealed in the symmetrical pressure holes in same cross section, rock core sealing shroud;Connect It is provided with annular protrusion one below set side-wall outer side face, pressure holes;Clip seat is arranged at below adapter sleeve, and clip is arranged at clip In seat.

For convenience of describing, do following abbreviation: suspension arrangement comes off, interior cartridge module and core grabber assembly are with suspension arrangement Decline, the distance that it declines is referred to as dropping distance.The width of the convex top of annular protrusion one is convex one wide, annular protrusion two The width of convex top be convex two wide, the convex top midpoint of annular protrusion one and the convex top midpoint of annular protrusion two it Between vertical dimension be convex middle-range.

Described outer barrel component includes outer tube, Pressurized short joint and protection pipe nipple, and Pressurized short joint is arranged at below outer tube and is located at Outside adapter sleeve, protection pipe nipple is arranged at below Pressurized short joint and is located at outside clip seat, and Pressurized short joint inside sidewalls face is arranged There is annular protrusion two;Annular protrusion two be located at annular protrusion one below, its convex top contact with each other after sealing interior cartridge module with Annular space space between outer barrel component, convex middle-range deducts 1/2nd convex one more than dropping distance and wide deducts 1/2nd convex two again Wide, add 1/2nd convex one wide to add 1/2nd convex two wide less than dropping distance.

Described outer barrel component also includes difference pipe nipple, and difference pipe nipple is arranged above or below outer tube, for adjusting outer tube Assembly entire length.

Described convex middle-range is equal to dropping distance.

The present invention has the beneficial effects that: can rationally utilize the hydraulic coupling of drilling fluid to realize fully wrapped around to broken rock core Purpose.During drilling and coring delivery, drilling fluid flows into inner/outer tube from circulation port after safety joint flows through heart axle and sealed ball seat Between annular section, after flow out through bit port, realize shaft bottom landwaste is taken back the purpose on ground.After drilling and coring delivery terminates Put into pressurization steel ball, pressurization steel ball falls into sealed ball seat after safety joint and heart axle, and so that drilling fluid runner is sealed cannot let out Pressure, thus apply hydraulic coupling to pressurization steel ball.Hydraulic coupling is passed to sealed ball seat by pressurization steel ball, causes sealed ball seat in hydraulic pressure Cut off pin in the presence of power and decline, and then expose relief hole and putting hole.Drilling fluid flows out from relief hole, places in the hole The steel ball that hangs lose support from sealed ball seat, lead to hang steel ball inward roll, so that suspension arrangement comes off, hang After device comes off, interior cartridge module is declined with suspension arrangement with core grabber assembly.Annular protrusion one and convex annular is made after decline Rise two convex top contact with each other, thus sealing the annular space space between interior cartridge module and outer barrel component.Drilling fluid is from pressure release After hole is flowed out, because the annular space space between interior cartridge module and outer barrel component is sealed so that the hydraulic coupling of drilling fluid is from pressure Hole presses to rock core sealing shroud, leads to rock core sealing shroud that strong plastic deformation occurs.The plastic deformation of rock core sealing shroud reaches simultaneously When to a certain extent, drilling fluid is released with adapter sleeve gap from rock core sealing shroud, makes rock core will not be subject to excess compression, Bao Zhengyan The integrity of the heart.Finally realize the rock core sealing shroud purpose fully wrapped around to broken rock core.Unexpectedly ensure that on soft, broken ground The core recovery of layer.

Brief description

Fig. 1 is the structural representation during drilling and coring delivery of the present invention.

Fig. 2 is the a-a generalized section of Fig. 1.

Fig. 3 is the b enlarged schematic partial view of Fig. 2.

Fig. 4 is the c enlarged schematic partial view of Fig. 2.

Fig. 5 terminate for drilling and coring delivery of the present invention after structural representation.

Fig. 6 is the f-f generalized section of Fig. 5.

Fig. 7 is the d enlarged schematic partial view of Fig. 6.

Fig. 8 is the e enlarged schematic partial view of Fig. 6.

Fig. 9 is surge pressue device and suspension arrangement structural representation.

Figure 10 is the g-g generalized section of Fig. 9.

Figure 11 is core grabber assembly structural representation.

Figure 12 is the h-h generalized section of Figure 11.

In accompanying drawing: 1- safety joint, 21- heart axle, 22- pin, 23- sealed ball seat, 24- relief hole, 25- pressurization steel ball, 31- inner core connector, 32- hangs steel ball, 33- circulation port, 34- sealed steel ball, 35- single current valve seat, 36- groove, and 37- places Hole, 41- outer tube, 42- Pressurized short joint, 43- annular protrusion two, 44- protection pipe nipple, 45- difference pipe nipple, 5- interior cartridge module, 61- is even Female connector, 62- rock core sealing shroud, 63- annular protrusion one, 64- pressure holes, 65- clip seat, 66- clip.

Specific embodiment

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of pressurized coring tool that surges, including safety joint 1, pressurization of surging Device, outer barrel component, interior cartridge module 5 and core grabber assembly, wherein safety joint 1 are bottom and the up big and down small circle of top hollow Taper, being threadeded with outer barrel component in safety joint 1 middle part, is threadeded with the pressue device that surges in bottom;Interior cartridge module 5 is passed through Suspension arrangement hangs on below the pressue device that surges, and core grabber assembly is arranged at below interior cartridge module 5;Surge pressue device, interior Cartridge module 5 and core grabber assembly are located in outer barrel component.After the pressue device that surges applies hydraulic pressure, suspension arrangement comes off, inner core group Part 5 and core grabber assembly decline with suspension arrangement, core grabber assembly clamping in the presence of hydraulic pressure, realize to broken rock core Fully wrapped around purpose.As shown in Fig. 9, Fig. 3, Fig. 5, Fig. 6, Fig. 7 and Figure 10, the pressue device that surges includes heart axle 21 and ball sealer Seat 23, heart axle 21 side wall medium position is provided with least one relief hole 24, is provided with least one placement below relief hole 24 Hole 37;Sealed ball seat 23 is arranged inside heart axle 21 by pin 22, and relief hole 24 is sealed with putting hole 37.Needing to pressurize When, inwardly put into pressurization steel ball 25 from safety joint 1, after careful axle 21, fall into sealed ball seat 23, pressurization steel ball 25 and ball sealer Seat 23 forms sealing, and sealed ball seat 23 cuts short pin 22 under hydraulic action, and sealed ball seat 23 declines under self gravitation effect, Expose relief hole 24 and putting hole 37.Suspension arrangement includes hanging steel ball 32, inner core connector 31, single current valve seat 35 and sealing Steel ball 34, inner core connector 31 bottom is connected with interior cartridge module 5, and inner core connector 31 inside sidewalls face is provided with and hangs steel ball 32 one-to-one grooves 36, are hung steel ball 32 and are corresponded with putting hole 37, hang steel ball 32 half and are located at putting hole 37, Half is located at groove 36;It is additionally provided with least one circulation port 33, circulation port 33 is located at sealed ball seat on inner core connector 31 side wall Below 23;Single current valve seat 35 is arranged at inner core connector 31 bottom, and sealed steel ball 34 is arranged above single current valve seat 35, is formed single Stream valve.As shown in Figure 11, Figure 12, Fig. 4 and Fig. 8, core grabber assembly includes adapter sleeve 61, rock core sealing shroud 62, clip 66 and card Hoop seat 65, adapter sleeve 61 side wall is provided with least two in the symmetrical pressure holes in same cross section 64, rock core sealing shroud 62 It is arranged inside adapter sleeve 61, pressure holes 64 are sealed;It is provided with convex annular below adapter sleeve 61 side-wall outer side face, pressure holes 64 Play 1;Clip seat 65 is arranged at below adapter sleeve 61, and clip 66 is arranged in clip seat 65.As shown in Figure 1, Figure 2, Fig. 3 and Fig. 4 institute Show, outer barrel component includes outer tube 41, Pressurized short joint 42 and protection pipe nipple 44, Pressurized short joint 42 is arranged at outer tube 41 lower section and is located at Outside adapter sleeve 61, protection pipe nipple 44 is arranged at Pressurized short joint 42 lower section and is located at outside clip seat 65, Pressurized short joint 42 side wall Medial surface is provided with annular protrusion 2 43;Annular protrusion 2 43 is located at below annular protrusion 1, and its convex top contacts with each other Annular space space between sealing interior cartridge module 5 and outer barrel component afterwards, it is wide that convex middle-range deducts 1/2nd convex one more than dropping distance Deduct that 1/2nd convex two wide, add 1/2nd convex one wide to add 1/2nd convex two wide less than dropping distance again.Pressure release Hole 24 is set to four.Putting hole 37 is set to two.Circulation port 33 is set to four.Relief hole 24 and circulation port 33 by interior to Downward-sloping outward, to prevent drilling fluid from blowing back into inner core.Outer barrel component also includes difference pipe nipple 45, and difference pipe nipple 45 is arranged at outer Above or below cylinder 41, for adjusting outer barrel component entire length.Convex middle-range is equal to dropping distance.

The present invention is in the course of the work: during drilling and coring delivery, drilling fluid flows through heart axle 21 and ball sealer from safety joint 1 Flow into the annular section between inner/outer tube 41 from circulation port 33 after seat 23, after flow out through bit port, realize shaft bottom landwaste Take back the purpose on ground.After drilling and coring delivery terminates, put into pressurization steel ball 25, pressurization steel ball 25 is after safety joint 1 and heart axle 21 Fall into sealed ball seat 23, make drilling fluid runner sealed cannot pressure release, thus to pressurization steel ball 25 apply hydraulic coupling.Pressurization steel ball Hydraulic coupling is passed to sealed ball seat 23 by 25, causes sealed ball seat 23 to cut off pin 22 in the presence of hydraulic coupling and decline, enters And expose relief hole 24 and putting hole 37.Drilling fluid flows out from relief hole 24, and the suspension steel ball 32 in putting hole 37 loses The support of self sealss ball seat 23, leads to hang steel ball 32 inward roll, so that suspension arrangement comes off, the pressue device that surges pressurizes When, suspension arrangement comes off, and interior cartridge module 5 and core grabber assembly decline with suspension arrangement.Annular protrusion 1 is made after decline Contact with each other with the convex top of annular protrusion 2 43, thus sealing the annular space space between interior cartridge module 5 and outer barrel component.Bore Well liquid after relief hole 24 outflow, because annular space space between interior cartridge module 5 and outer barrel component is sealed so that drilling fluid Hydraulic coupling presses to rock core sealing shroud 62 from pressure holes 64, leads to rock core sealing shroud 62 that strong plastic deformation occurs.Rock simultaneously When heart sealing shroud 62 plastic deformation reaches to a certain degree, drilling fluid is let out through ball-and-seat with adapter sleeve 61 gap from rock core sealing shroud 62 Put, make rock core will not be subject to excess compression, protect the integrity of positive rock core.Finally realize rock core sealing shroud 62 complete to broken rock core The purpose of parcel.Unexpectedly ensure that in soft, broken formation core recovery.

Claims (9)

1. a kind of pressurized coring tool that surges it is characterised in that: include safety joint (1), the pressue device that surges, outer tube group Part, interior cartridge module (5) and core grabber assembly, wherein safety joint (1) are bottom and the up big and down small cone of top hollow, peace Threaded with outer barrel component in the middle part of full joint (1), threadeded with the pressue device that surges in bottom, interior cartridge module (5) is passed through outstanding Hang device hangs on below the pressue device that surges, and core grabber assembly is arranged at below interior cartridge module (5), the pressue device that surges, interior Cartridge module (5) and core grabber assembly are located in outer barrel component, and the described pressue device that surges includes heart axle (21) and sealed ball seat (23), heart axle (21) side wall medium position is provided with least one relief hole (24), and relief hole is provided with least one below (24) Individual putting hole (37);Sealed ball seat (23) is arranged inside heart axle (21) by pin (22), by relief hole (24) and putting hole (37) seal;It is provided with pressurization steel ball (25), pressurization steel ball (25) and sealed ball seat (23) form close above sealed ball seat (23) Envelope, sealed ball seat (23) cuts off pin (22), and sealed ball seat (23) declines and exposes relief hole (24) and putting hole (37).
2. pressurized coring tool that surges as claimed in claim 1 it is characterised in that: described suspension arrangement include hang steel ball (32), inner core connector (31), single current valve seat (35) and sealed steel ball (34), inner core connector (31) bottom and interior cartridge module (5) connect, inner core connector (31) inside sidewalls face is provided with and hangs the one-to-one groove (36) of steel ball (32), hangs steel Ball (32) is corresponded with putting hole (37), hangs steel ball (32) part and is located at groove positioned at putting hole (37), a part (36);At least one circulation port (33) is additionally provided with the wall of inner core connector (31) side, circulation port (33) is located at sealed ball seat (23) below;Single current valve seat (35) is arranged at inner core connector (31) bottom, and sealed steel ball (34) is arranged at single current valve seat (35) Top, forms ball-and-seat.
3. as claimed in claim 1 pressurized coring tool that surges it is characterised in that: described core grabber assembly includes adapter sleeve (61), rock core sealing shroud (62), clip (66) and clip seat (65), adapter sleeve (61) side wall is provided with least two in same horizontal stroke The symmetrical pressure holes in section (64), rock core sealing shroud (62) is arranged inside adapter sleeve (61), and pressure holes (64) are sealed; It is provided with annular protrusion one (63) below adapter sleeve (61) side-wall outer side face, pressure holes (64);Clip seat (65) is arranged at connection Below set (61), clip (66) is arranged in clip seat (65).
4. pressurized coring tool that surges as claimed in claim 3 it is characterised in that: described outer barrel component include outer tube (41), Pressurized short joint (42) and protection pipe nipple (44), Pressurized short joint (42) is arranged at below outer tube (41) and is located at adapter sleeve (61) outward Side, protection pipe nipple (44) is arranged at below Pressurized short joint (42) and is located at outside clip seat (65), in the wall of Pressurized short joint (42) side Side is provided with annular protrusion two (43);Annular protrusion two (43) is located at below annular protrusion one (63), annular protrusion two (43) And the convex top of annular protrusion one (63) seals annular space space and outer barrel component between for the interior cartridge module (5) after contacting with each other.
5. pressurized coring tool that surges as claimed in claim 1 it is characterised in that: described relief hole (24) and circulation port (33) It is set to 2-5.
6. described pressurized coring tool that surges as arbitrary in claim 1 or 2 it is characterised in that: the setting of described putting hole (37) For 2-5.
7. pressurized coring tool that surges as claimed in claim 1 it is characterised in that: described relief hole (24) and circulation port (33) Downward-sloping from inside to outside.
8. pressurized coring tool that surges as claimed in claim 4 it is characterised in that: convex middle-range deducts two points more than dropping distance One of convex one wide deduct that 1/2nd convex two wide, add 1/2nd convex one wide to add 1/2nd convex less than dropping distance again Two is wide.
9. pressurized coring tool that surges as claimed in claim 8 it is characterised in that: described convex middle-range be equal to dropping distance.
CN201410427660.8A 2014-08-27 2014-08-27 Hydraulic pressure type coring tool CN104153734B (en)

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Application Number Priority Date Filing Date Title
CN201410427660.8A CN104153734B (en) 2014-08-27 2014-08-27 Hydraulic pressure type coring tool

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CN104153734A CN104153734A (en) 2014-11-19
CN104153734B true CN104153734B (en) 2017-01-25

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105672923B (en) * 2015-12-16 2018-09-11 中国地质科学院勘探技术研究所 A kind of single action assembly for preventing inner tube assembly from falling off
CN109025874A (en) * 2018-08-13 2018-12-18 四川大学 Core drilling rig self-starter structure
CN108999583A (en) * 2018-08-13 2018-12-14 四川大学 Pressure maintaining cylinder top seal structure with explosion prevention function
CN108952610B (en) * 2018-09-10 2020-05-08 长江大学 Hydraulic drive coring tool for complex well

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1530744A1 (en) * 1988-02-29 1989-12-23 Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности "Укргипрониинефть Core tool
CN201723190U (en) * 2010-06-10 2011-01-26 大庆油田有限责任公司 Unconsolidated deposit hydraulic pressure type sealed coring tool
CN201778709U (en) * 2010-08-12 2011-03-30 大庆石油管理局 Pressurization relief mechanism of pressurized coring tool
CN102900390A (en) * 2012-11-09 2013-01-30 中国石油集团川庆钻探工程有限公司 Pressurized coring tool
CN204311998U (en) * 2014-08-27 2015-05-06 四川川庆石油钻采科技有限公司 One is surged pressurized coring tool
CN204311999U (en) * 2014-08-27 2015-05-06 四川川庆石油钻采科技有限公司 A kind of rock core sealing device being applied to the pressurized coring tool that surges

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1530744A1 (en) * 1988-02-29 1989-12-23 Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности "Укргипрониинефть Core tool
CN201723190U (en) * 2010-06-10 2011-01-26 大庆油田有限责任公司 Unconsolidated deposit hydraulic pressure type sealed coring tool
CN201778709U (en) * 2010-08-12 2011-03-30 大庆石油管理局 Pressurization relief mechanism of pressurized coring tool
CN102900390A (en) * 2012-11-09 2013-01-30 中国石油集团川庆钻探工程有限公司 Pressurized coring tool
CN204311998U (en) * 2014-08-27 2015-05-06 四川川庆石油钻采科技有限公司 One is surged pressurized coring tool
CN204311999U (en) * 2014-08-27 2015-05-06 四川川庆石油钻采科技有限公司 A kind of rock core sealing device being applied to the pressurized coring tool that surges

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Inventor after: Li Weicheng

Inventor after: Chen Xiaobin

Inventor after: Chen Li

Inventor after: Yao Jianlin

Inventor after: Liu Bin

Inventor after: He Chao

Inventor after: Hu Pan

Inventor after: Tang Cong

Inventor after: Chen Wencai

Inventor before: Hu Pan

Inventor before: Liu Bin

Inventor before: He Chao

Inventor before: Li Weicheng

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Free format text: CORRECT: INVENTOR; FROM: HU PAN LIU BIN HE CHAO LI WEICHENG TO: LI WEICHENG CHEN XIAOBIN CHEN LI YAO JIANLIN LIU BIN HE CHAO HU PAN TANG CONG CHEN WENCAI

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