CN201723190U - Unconsolidated deposit hydraulic pressure type sealed coring tool - Google Patents

Unconsolidated deposit hydraulic pressure type sealed coring tool Download PDF

Info

Publication number
CN201723190U
CN201723190U CN2010202213067U CN201020221306U CN201723190U CN 201723190 U CN201723190 U CN 201723190U CN 2010202213067 U CN2010202213067 U CN 2010202213067U CN 201020221306 U CN201020221306 U CN 201020221306U CN 201723190 U CN201723190 U CN 201723190U
Authority
CN
China
Prior art keywords
core
drill bit
overcoat
urceolus
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2010202213067U
Other languages
Chinese (zh)
Inventor
张士超
李龙涛
钱可贵
向峰
于智峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daqing Oilfield Co Ltd
Original Assignee
Daqing Oilfield Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daqing Oilfield Co Ltd filed Critical Daqing Oilfield Co Ltd
Priority to CN2010202213067U priority Critical patent/CN201723190U/en
Application granted granted Critical
Publication of CN201723190U publication Critical patent/CN201723190U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

An unconsolidated deposit hydraulic pressure type sealed coring tool mainly solves the problem that pressure can not be released completely in a conventional coring tool. The utility model is characterized in that an outer barrel upper connector (2), an outer barrel (3), an outer barrel lower connector (4) and a drill bit (5) are connected below a large connector (1) in sequence; a ball seat (7) is arranged at the upper end of a releasing sleeve (6) connected through an upper pin inside the large connector (1); an inner barrel (9), an inner barrel lower connector (10) and a core grabber (11) are sequentially connected below the a releasing outer sleeve (8) connected through a locking piece (20) inside the large connector (1); an inclined plane matched with an inner cone round surface inside the drill bit (5) is arranged outside the lower end of the core grabber (11); a closed head (12) is internally installed in the core grabber (11) and connected to the drill bit (5) through a lower pin (19); and a spring (14) is sleeved on a plug (13) in threaded connection in axial direction inside the releasing outer sleeve (8). The unconsolidated formation hydrodynamic pressure type closed coring tool has the characteristic of complete pressure release.

Description

Scall fluid power adding pressure type sealing core drilling instrument
Technical field:
The utility model relates to oil drilling field core used instrument, especially scall fluid power adding pressure type sealing core drilling instrument.
Background technology:
It is a difficult point during oil drilling is cored that scall is cored, and existing coring tool has fluid power adding pressure type and mechanical adding pressure type, and the mode that the fluid power water booster system adopts fluid power to add crimp head more is pressurizeed, and adopts the mode of pin, ball or piece to hang inner core.Core and finish the back pitching, under the fluid power effect, the inner core hitch is freed, and inner core is descending, and core grabber draws core breaking in.It is loaded down with trivial details that the tool operation that adds crimp head wherein is installed, and the inner core hitch that has is freed back moment pressure release, and inner core is by the descending rock core that blocks of deadweight, because not exclusively pressure release, the drilling fluid during trip-out in the drilling rod descends slow, causes well head spray mud.
The utility model content:
In order to solve existing coring tool the loaded down with trivial details and problem of pressure release fully of the tool operation that adds crimp head is installed.The utility model provides a kind of scall fluid power adding pressure type sealing core drilling instrument, and it is complete that this scall fluid power adding pressure type sealing core drilling instrument has pressure release, need not install to add crimp head, characteristics simple to operate.
The technical solution of the utility model is: this scall fluid power adding pressure type sealing core drilling instrument comprises big joint, is connected with urceolus top connection, urceolus, urceolus lower contact and drill bit in turn under the big joint; Be connected with the release cover by last pin in the big joint, discharging the set upper side has ball seat, discharges outside the cover to be connected with the release overcoat by lock dog in the big joint, discharges under the overcoat to be connected with inner core, inner core lower contact and core grabber in turn; The inclined-plane that matches with drill bit inner cone disc is arranged on the lateral surface of core grabber lower end, and core grabber is built-in with airtight head and is connected on the drill bit by pin down, and airtight lower end prolonged and the drill bit lower end, is filled with sealing fluid in the closed chamber between airtight head and the release overcoat; Discharge the interior axial thread of overcoat and be connected with plug, be with spring on the upper end montant of plug, the upper end of spring places in the through hole of ball seat, and discharging on the wall of overcoat has circulating opening, and circulating opening is connected with the hydrophthalmia of drill bit by the mud circulation passage that forms between urceolus and the inner core.
The utlity model has following beneficial effect: this scall fluid power adding pressure type sealing core drilling instrument is at first because employing is being connected with urceolus top connection, urceolus, urceolus lower contact and drill bit in turn under big joint; Be connected with the release cover by last pin in the big joint, release cover upper and lower side has ball seat respectively, discharges overcoat, inner core, inner core lower contact and core grabber; The inclined-plane that matches with drill bit inner cone disc is arranged outside the core grabber lower end, core grabber is built-in with airtight head and is connected on the drill bit by following pin, discharge the interior axial thread of overcoat and be connected with plug, be with spring on the montant of plug upper end, the spring upper end places ball seat through hole inner structure.Utilization is from ground pitching 17, build the pressure then, cut off pin, it is descending to discharge cover, big joint is thrown off with the lock dog that the release overcoat is connected, spring is compressed, and inner core is descending simultaneously, and core grabber draws core breaking in, termination of pumping behind the core breaking, by jack-up, open by circulation canal under spring elongation effect for ball, realizes complete pressure release.It is complete that this scall fluid power adding pressure type sealing core drilling instrument has pressure release thus, need not install to add crimp head, characteristics simple to operate.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
The big joint of 1-among the figure, the top connection of 2-urceolus, 3-urceolus, the lower contact of 4-urceolus, the 5-drill bit, 6-discharges cover, the 7-ball seat, 8-discharges overcoat, the 9-inner core, the lower contact of 10-inner core, 11-core grabber, the airtight head of 12-, 13-plug, 14-spring, the 15-circulating opening, 16-hydrophthalmia, 17-ball, the last pin of 18-, pin under the 19-, 20-lock dog.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this scall fluid power adding pressure type sealing core drilling instrument comprises big joint 1, big joint is connected with urceolus top connection 2, urceolus 3, urceolus lower contact 4 and drill bit 5 for 1 time in turn, drives the main body that drill bit 5 rotates by above-mentioned connecting to form, and the pressure of the drill and moment of torsion are delivered on the main body; Be connected with release cover 6 by last pin 18 in the big joint 1, discharge cover 6 upper ends ball seat 7 is arranged, discharge cover 6 outer big joints 1 interior being connected with and discharge overcoat 8, discharge overcoat and be connected with inner core 9, inner core lower contact 10 and core grabber 11 for 8 times in turn, form and transfer core grabber 11 core breaking devices by lock dog 20; Core grabber 11 is the formula core grabber of tackling all problems at once, top is tubular, the bottom becomes claw type, the inclined-plane that matches with drill bit 5 internal conical surfaces on the lateral surface of core grabber 11 lower ends, when pressurizeing, make the inclined-plane of core grabber 11 refer to draw in along the descending pawl of core grabber 11 that makes of drill bit 5 internal conical surfaces by fluid power, core breaking, airtight 12 by descending pin 19 to be connected on the drill bit 5, airtight 12 lower end prolonged and drill bit 5 lower ends, is filled with sealing fluid in the inner core 9, and airtight 12 is enclosed in 9 li of inner cores with plug 13 with sealing fluid, after pin 19 is cut off, enter inner core 9 together with the rock core that drills through for airtight 12, sealing fluid was wrapped in core surface and kept apart mud this moment, prevented that rock core is by mud contamination; Discharge overcoat 8 interior axial threads and be connected with plug 13, be with spring 14 on the upper end montant of plug 13, spring 14 upper ends place in the through hole of ball seat 7, termination of pumping after cutting the heart and finishing, spring 14 is with ball 17 jack-up, and circulating opening 15 is opened, realize complete pressure release, circulating opening 15 is positioned at and discharges on overcoat 8 walls, and circulating opening 15 produces the mud circulation passage by gap between urceolus 3 internal diameters and inner core 9 external diameters and is connected realization mud circulation when core-drilling with the hydrophthalmia 16 of drill bit 5.
Operating principle: this scall fluid power adding pressure type sealing core drilling instrument connects G.I.H by the drill string on big joint 1 and top.When this scall fluid power adding pressure type sealing core drilling instrument is lowered into the shaft bottom, touch the shaft bottom for airtight 12, this moment, pin 19 was cut off down in pressurization, in airtight the 12 indentation drill bit 5, drill bit 5 touches the shaft bottom and begins core-drilling, mud enters gap between urceolus 3 and the inner core 9 by drill string endoporus, big joint 1 through discharging circulating opening 15 on overcoat 8 walls, arrives the hydrophthalmia 16 of drill bit 5 at last, the realization mud circulation.In the drilling process, sealing fluid wraps rock core, makes rock core avoid mud contamination.When creep into reach predetermined drilling depth after, from ground pitching 17, ball 17 is fallen on the ball seat 7, build the pressure then, cut off pin 18, it is descending to discharge cover 6, the lock dog 20 that big joint 1 is connected with release overcoat 8 is thrown off, spring 14 is compressed, release cover 6 goes downwards to the step places that discharge in the overcoat 8 and stops descending, continue to build the pressure, it is descending together to make release overcoat 8 drive inner cores 9, inner core lower contact 10 and core grabber 11 under pressure, thereby then the inclined-plane of core grabber 11 draws core breakings in along the descending core grabber 11 of drill bit 5 internal conical surfaces.Termination of pumping behind the core breaking, by jack-up, open, and realizes complete pressure release by circulation canal under spring 14 elongation effects for ball 17.

Claims (1)

1. a scall fluid power adding pressure type sealing core drilling instrument comprises big joint (1), it is characterized in that: be connected with urceolus top connection (2), urceolus (3), urceolus lower contact (4) and drill bit (5) in turn under the big joint (1); Be connected with release cover (6) by last pin (18) in the big joint (1), discharge cover (6) upper end ball seat (7) is arranged, the outer big joint (1) of release cover (6) is interior to be connected with release overcoat (8) by lock dog (20), discharges under the overcoat (8) to be connected with inner core (9), inner core lower contact (10) and core grabber (11) in turn; The inclined-plane that matches with drill bit (5) inner cone disc is arranged on the lateral surface of core grabber (11) lower end, core grabber (11) is built-in with airtight head (12) and is connected on the drill bit (5) by following pin (19), airtight head (12) lower end is prolonged and drill bit (5) lower end, is filled with sealing fluid in the closed chamber between airtight head (12) and the release overcoat (8); Discharge the interior axial thread of overcoat (8) and be connected with plug (13), be with spring (14) on the upper end montant of plug (13), the upper end of spring (14) places in the through hole of ball seat (7), discharging on the wall of overcoat (8) has circulating opening (15), and circulating opening (15) is connected with the hydrophthalmia (16) of drill bit (5) by the mud circulation passage that forms between urceolus (3) and the inner core (9).
CN2010202213067U 2010-06-10 2010-06-10 Unconsolidated deposit hydraulic pressure type sealed coring tool Expired - Lifetime CN201723190U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202213067U CN201723190U (en) 2010-06-10 2010-06-10 Unconsolidated deposit hydraulic pressure type sealed coring tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202213067U CN201723190U (en) 2010-06-10 2010-06-10 Unconsolidated deposit hydraulic pressure type sealed coring tool

Publications (1)

Publication Number Publication Date
CN201723190U true CN201723190U (en) 2011-01-26

Family

ID=43491509

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202213067U Expired - Lifetime CN201723190U (en) 2010-06-10 2010-06-10 Unconsolidated deposit hydraulic pressure type sealed coring tool

Country Status (1)

Country Link
CN (1) CN201723190U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102268970A (en) * 2011-07-05 2011-12-07 江苏省无锡探矿机械总厂有限公司 Core catching mechanism
DE102011085192A1 (en) 2011-10-25 2013-04-25 Technische Universität Berlin Apparatus and method for sampling to obtain a pressure prevailing at the sampling site
CN104153734A (en) * 2014-08-27 2014-11-19 四川川庆石油钻采科技有限公司 Hydraulic pressure type coring tool
CN104165034A (en) * 2014-08-27 2014-11-26 四川川庆石油钻采科技有限公司 Releasing device applied to hydraulic pressurization type coring tool
CN108386148A (en) * 2018-01-31 2018-08-10 长江岩土工程总公司(武汉) Using the drilling coring method of mud clothing package core in sand
CN110454105A (en) * 2019-08-27 2019-11-15 中煤科工集团重庆研究院有限公司 Coal mine underground coal bed gas bearing capacity with boring in-situ test system and method
CN110500057A (en) * 2019-07-22 2019-11-26 自然资源部第一海洋研究所 A kind of two-tube rock core core drill of band inside spin

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102268970A (en) * 2011-07-05 2011-12-07 江苏省无锡探矿机械总厂有限公司 Core catching mechanism
DE102011085192A1 (en) 2011-10-25 2013-04-25 Technische Universität Berlin Apparatus and method for sampling to obtain a pressure prevailing at the sampling site
WO2013060720A2 (en) 2011-10-25 2013-05-02 Technische Universität Berlin Device and method for extracting a sample while maintaining a pressure that is present at the sample extraction location
US9976369B2 (en) 2011-10-25 2018-05-22 Corsyde International Gmbh & Co. Kg Device and method for extracting a sample while maintaining a pressure that is present at the sample extraction location
CN104153734A (en) * 2014-08-27 2014-11-19 四川川庆石油钻采科技有限公司 Hydraulic pressure type coring tool
CN104165034A (en) * 2014-08-27 2014-11-26 四川川庆石油钻采科技有限公司 Releasing device applied to hydraulic pressurization type coring tool
CN104153734B (en) * 2014-08-27 2017-01-25 四川川庆石油钻采科技有限公司 Hydraulic pressure type coring tool
CN108386148A (en) * 2018-01-31 2018-08-10 长江岩土工程总公司(武汉) Using the drilling coring method of mud clothing package core in sand
CN108386148B (en) * 2018-01-31 2020-01-17 长江岩土工程总公司(武汉) Drilling coring method for wrapping rock core in sandy soil by using mud coating
CN110500057A (en) * 2019-07-22 2019-11-26 自然资源部第一海洋研究所 A kind of two-tube rock core core drill of band inside spin
CN110454105A (en) * 2019-08-27 2019-11-15 中煤科工集团重庆研究院有限公司 Coal mine underground coal bed gas bearing capacity with boring in-situ test system and method

Similar Documents

Publication Publication Date Title
CN201723190U (en) Unconsolidated deposit hydraulic pressure type sealed coring tool
CN106761513B (en) A kind of rope salvaging type coring drilling with keep up pressure drilling tool
CN101482001B (en) Rubber plug system used for drilling liner cementing of horizontal well
CN106884626A (en) A kind of two-tube drilling tool detent mechanism of anti-dieback formula
CN103321624B (en) A desirable ball seat sliding sleeve of screw-type
CN205225136U (en) Tear top of fish fishing tool
CN202531150U (en) Fishable fracturing sliding sleeve sand spraying device
CN201908601U (en) Sealing left hand fishing spear
CN203769700U (en) Dragging and milling canister
CN206647083U (en) A kind of two-tube drilling tool detent mechanism
CN201074492Y (en) Left hand fishing spear with large obliqueness of oilfield horizontal well and receded horizontal section
CN201103358Y (en) High-capacity bailer
CN206668159U (en) The geological prospecting single rotary double core barrel cored for negative pressure
CN109779538B (en) Petroleum downhole operation device
CN204738778U (en) Screw thread make -up drags for lance in pit
CN201567992U (en) Expansion tool for equal diameter drill completion
CN201908600U (en) Through-center die collar
CN204646161U (en) Drill stem type magnet fisher
CN202370512U (en) Large particle drilling type borehole wall coring device
CN205503076U (en) Down -hole junk slip socket
CN102877809B (en) Seal fishing mechanism for tubing collar
CN203640654U (en) Reversing process string for horizontal well
CN202767932U (en) Tubing coupling sealing fishing device
CN201439694U (en) Taking and changing sleeve cutting salvage device
CN103527130B (en) A kind of horizontal well Flip-chip tubing string

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20110126

CX01 Expiry of patent term