CN201103359Y - Segmented cutter for casing tube of horizontal well - Google Patents

Segmented cutter for casing tube of horizontal well Download PDF

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Publication number
CN201103359Y
CN201103359Y CNU2007200156142U CN200720015614U CN201103359Y CN 201103359 Y CN201103359 Y CN 201103359Y CN U2007200156142 U CNU2007200156142 U CN U2007200156142U CN 200720015614 U CN200720015614 U CN 200720015614U CN 201103359 Y CN201103359 Y CN 201103359Y
Authority
CN
China
Prior art keywords
spring
regulating sleeve
push rod
arbor
blade
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 - Fee Related
Application number
CNU2007200156142U
Other languages
Chinese (zh)
Inventor
曲景斌
赵鑫
李亚芳
董军
李玉凯
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.)
Liaohe Petroleum Exploration Bureau
Original Assignee
Liaohe Petroleum Exploration Bureau
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 Liaohe Petroleum Exploration Bureau filed Critical Liaohe Petroleum Exploration Bureau
Priority to CNU2007200156142U priority Critical patent/CN201103359Y/en
Application granted granted Critical
Publication of CN201103359Y publication Critical patent/CN201103359Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a segment reaping machine of a horizontal well casing for heavy repair of oil wells for oil and gas exploitation, which comprises an upper joint, a variable torque commutative ring, an arbor, an anchor slip, a hydraulic piston, a regulating sleeve, a hydraulic spring, a main spring, a push rod, a blade, a knife pillow and an offsetting spring. The upper joint is connected with the arbor by a clamp spring; the hydraulic piston is arranged in the arbor and seats on the regulating sleeve; then the arbor is inserted in the anchor clip, while the hydraulic spring is pressed in a spring slot of the regulating sleeve; the main spring is arranged in the spring slot of the push rod; the blade is arranged at a top knife block connected with the body and is fixed by a bolt; the knife pillow is inlayed at a lower knife block and is fixed by a bolt; the offsetting spring is arranged in an inner cavity of the knife block for supporting. The machine of the utility model solves the problem in the prior art that the disassembly and replacement of a casing or a sieve tube in the heavy repair of horizontal oil wells is difficult enough to affect the operation, which can be widely used in the heavy repair operation of oil wells for oil and gas exploitation.

Description

The horizontal well casing pipe segmentation extracts device
Technical field:
The utility model relates to the horizontal well casing pipe segmentation that a kind of oil and gas exploitation workover uses and extracts device.
Background technology:
The technology that casing replacing is a more complicated in the workover treatment is got in oilfield horizontal well overhaul at present, at inclination section with horizontal segment is got casing replacing and the screen casing difficulty is bigger, also do not extract the instrument of sleeve pipe at present at this position. therefore, need develop the instrument that extracts sleeve pipe at this position, we have been developed into the horizontal well casing pipe segmentation and have extracted device from production practices, the similar mechanical type internal cutter of its structure, and its feature is that cutter head is in the bottom that extracts device, be convenient to discharge the iron that cuts out and cut, be difficult for bit freezing; It has machinery rotation cutting function, utilizes the rotation of drill string to reach the purpose of cutting.
The utility model content:
The utility model purpose is that a kind of horizontal well casing pipe segmentation that provides in order to overcome above-mentioned shortcoming extracts device, it has solved the horizontal well overhaul that exists in the prior art and has got casing replacing, gets casing replacing and the bigger problem that influences operation of screen casing difficulty at deflecting and horizontal segment.
The technical scheme that its technical problem that solves the utility model adopts is:
The horizontal well casing pipe segmentation extracts device by top connection, the bending moment ring change, knife bar, the grappling slips, hydraulic piston, regulating sleeve, the waterpower spring, main spring, push rod, blade, the cutter pillow, back-moving spring is formed: top connection is connected with jump ring with knife bar, pack into hydraulic piston in the knife bar and seat on regulating sleeve, knife bar is inserted in the grappling slips again, the waterpower spring is pressed in the spring groove of regulating sleeve, main spring is contained in the spring groove of push rod, being screwed on the upper tool post that blade is contained in body is connected, the cutter pillow is set on the lower slide and is screwed, and back-moving spring is contained in the knife rest inner chamber and does support with back-moving spring.During work: top connection with after drilling rod is connected, is extracted under the device horizontal well casing pipe segmentation to the precalculated position with drilling tool, and turn on pump is washed top of fish, this segmentation is extracted device again and is lowered to lentamente in the fish chamber; The grappling slips is produced relative friction with dragging for sleeve pipe or screen casing inwall after entering the fish chamber, produces relative motion, by the track commutation, is pushed to the knife bar bottom, after knife bar continues to come downwards to desired depth, stops descending; Carry drill string on this moment, make the up grappling slips that struts of cone, grappling slips and internal surface of sleeve pipe are killed; By inject liquid in drill string, under the condition that regulating sleeve (it is to regulate the parts that hydraulic piston is crossed liquid measure) regulates, it is descending that the waterpower spring promotes push rod, makes cutter rest the head on extrapolated blade in the descending process of push rod, and be close to the internal surface of sleeve pipe that is cut; Process rotary drill column 6-10 minute is with 20-30 rev/min speed, with casing severing.Under the effect of back-moving spring, make push rod up, waterpower spring, cutter pillow are regained, and blade is also regained simultaneously.Take out drill string and pull the sleeve pipe that is cut off out.
The novel beneficial effect of this use is that it is fast that this sleeve pipe segmentation extracts the device cutting speed: the sleeve pipe cutting of diameter 177.8mm only needs 6-8 minute; Behind the cutting sleeve pipe, can bite cut sleeve pipe by the tooth sheet of slips and also it can be pulled out, salvage again and drag for lance under not needing; Cutter head is in the bottom that extracts device, and the iron after the cutting is cut easy discharge ground; Reduce the number of times that makes a trip, reduced workover cost.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
Among the figure 1, top connection, 2, the bending moment ring change, 3, knife bar, 4, the grappling slips, 5, hydraulic piston, 6, regulating sleeve, 7, the waterpower spring, 8, main spring, 9, push rod, 10, blade, 11, the cutter pillow, 12, back-moving spring.
The specific embodiment:
In the accompanying drawings, the horizontal well casing pipe segmentation extracts device by 1, top connection, 2, the bending moment ring change, 3, knife bar, 4, the grappling slips, 5, hydraulic piston, 6, regulating sleeve, 7, the waterpower spring, 8, main spring, 9, push rod, 10, blade, 11, the cutter pillow, 12, back-moving spring is formed: top connection 1 is connected with knife bar 3 usefulness jump rings, pack into hydraulic piston 5 in the knife bar 3 and be sitting on the regulating sleeve, again knife bar 3 is inserted in the grappling slips 4, waterpower spring 7 is pressed in the spring groove of regulating sleeve 6, main spring 8 is contained in the spring groove of push rod 9, being screwed on the upper tool post that blade 10 is contained in body is connected, cutter pillow 11 is set on the lower slide and is screwed, and back-moving spring 12 is contained in the knife rest inner chamber and does support with back-moving spring 12.

Claims (1)

1, a kind of horizontal well casing pipe segmentation extracts device by top connection (1), bending moment ring change (2), knife bar (3), grappling slips (4), hydraulic piston (5), regulating sleeve (6), waterpower spring (7), main spring (8), push rod (9), blade (10), cutter pillow (11), back-moving spring (12) is formed, it is characterized in that: top connection (1) is connected with jump ring with knife bar (3), pack into hydraulic piston (5) in the knife bar (3) and seat on regulating sleeve (6), knife bar (3) inserts in the grappling slips (4), waterpower spring (7) is pressed in the spring groove of regulating sleeve (6), main spring (8) is contained in the spring groove of push rod (9), being screwed on the upper tool post that blade (10) is contained in body is connected, cutter pillow (11) is set on the lower slide and is screwed, and back-moving spring (12) is contained in the knife rest inner chamber does support with back-moving spring.
CNU2007200156142U 2007-11-02 2007-11-02 Segmented cutter for casing tube of horizontal well Expired - Fee Related CN201103359Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200156142U CN201103359Y (en) 2007-11-02 2007-11-02 Segmented cutter for casing tube of horizontal well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200156142U CN201103359Y (en) 2007-11-02 2007-11-02 Segmented cutter for casing tube of horizontal well

Publications (1)

Publication Number Publication Date
CN201103359Y true CN201103359Y (en) 2008-08-20

Family

ID=39950384

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200156142U Expired - Fee Related CN201103359Y (en) 2007-11-02 2007-11-02 Segmented cutter for casing tube of horizontal well

Country Status (1)

Country Link
CN (1) CN201103359Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101614118B (en) * 2009-05-08 2012-05-30 深圳市远东石油钻采工程有限公司 Clutch unlocking and rotating mechanism of underwater cutting tool
CN102828715A (en) * 2012-09-03 2012-12-19 中国海洋石油总公司 Hydraulic cutting knife component with centralizing structure of mechanical cutting knife
CN105781465A (en) * 2016-01-26 2016-07-20 中国海洋石油总公司 Rotary type cutting and fishing integral fisher

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101614118B (en) * 2009-05-08 2012-05-30 深圳市远东石油钻采工程有限公司 Clutch unlocking and rotating mechanism of underwater cutting tool
CN102828715A (en) * 2012-09-03 2012-12-19 中国海洋石油总公司 Hydraulic cutting knife component with centralizing structure of mechanical cutting knife
CN105781465A (en) * 2016-01-26 2016-07-20 中国海洋石油总公司 Rotary type cutting and fishing integral fisher

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee