CN2565969Y - Pipe string compensation packer top-proof device - Google Patents

Pipe string compensation packer top-proof device Download PDF

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Publication number
CN2565969Y
CN2565969Y CN 02268996 CN02268996U CN2565969Y CN 2565969 Y CN2565969 Y CN 2565969Y CN 02268996 CN02268996 CN 02268996 CN 02268996 U CN02268996 U CN 02268996U CN 2565969 Y CN2565969 Y CN 2565969Y
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CN
China
Prior art keywords
packer
compensation
internal diameter
thread
tubing string
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Expired - Fee Related
Application number
CN 02268996
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Chinese (zh)
Inventor
游兴友
张清华
李龙江
李学荣
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Individual
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Individual
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Priority to CN 02268996 priority Critical patent/CN2565969Y/en
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Publication of CN2565969Y publication Critical patent/CN2565969Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a pipe string compensation packer top-proof device, which is cylindrical. A pipe string compensator which is composed of an upper connector, a tooth nesting, a compensating outer sleeve, a welding joint, a tooth embedding welding head, a compensating central pipe of a connecting pipe, a pin and a releasing joint is arranged on the middle upper part; an anti-push device of the packer which is composed of a long tile shell body, a slip, a positioning sleeve, a fixing screw nail, a slip conical body, a pin, a central pipe, a limiting joint, a locking ring, an outer jacket of the locking ring, a pin and a leather cup is arranged on the middle lower part; the pipe string compensator and the anti-push device of the packer are connected through screw and are limited by the pin. The upper part of the utility model is connected with an oil pipe string and the lower part is connected with the packer after the packer is sealed; the slip can lock the packer through making use of the inverse buckled function of the releasing joint; the pipe string compensator is dislocated from the anti-push device of the packer through making use of the inverse buckled function of the releasing joint; the pipe string can be in free telescoping following the change of load, achieving that double functions of the compensation of the pipe string and the push resistance of the packer.

Description

The anti-ejection device of tubing string compensation packer
One, technical field
The utility model relates to used tubing string compensation in a kind of petroleum production engineering, the anti-ejection device of packer.
Two, background technology
In the oilfield exploitation development process, often use Y221 or Y211 and Y111 packer and cooperate, oil well is carried out different layers shutoff exploitation.And, dual mode is arranged to card oil sealing layer tubing string: the one, adopt anti-jack slips to connect and be lowered to packer, to give up after the good packer of seat, packer and top flow string break away from; The 2nd, packer connects with the oil well pump tubing string and is lowered to, and pump and packer are not thrown off.
Use for second kind of card tube sealing post (sucker rod pump mechanical block envelope, layerwise production tubing string) packer exists two subject matters: the one, and seat envelop rated tonnage of packer excessive (conventional Y211, Y221 seat envelop rated tonnage 60-80KN), or pump is hung dark (distance is less than 600 meters between pump and the packer), the tubing string load point of neutralization is more than the pump barrel position, cause oil pipe bend by pressure on pump barrel and the pump, make oil pipe and sucker rod partial wear or holddown in the manufacturing process easily.The 2nd, if packer set is too light, the packer compaction degree is not enough, and packer can be gone up top release in the manufacturing process, causes the card envelope to lose efficacy.
Three, summary of the invention
The purpose of this utility model is to have designed the anti-ejection device of a kind of tubing string compensation packer at above-mentioned second kind of existing problem of card envelope mode.
The technical solution of the utility model realizes in the following manner:
The utility model is cylindrical, and the middle and upper part is made as the tubing string expansion loop, and the middle and lower part is made as the anti-apical organ of packer, between connect by the left-hand thread back-off sub.The tubing string expansion loop by be located at the upper end up and down with the top connection of box thread, the compensation outer tube that is threaded with it, the plumb joint that is connected with the compensation external pipe thread, tooth scarfweld joint with the plumb joint welding, the tube connector that is threaded with tooth scarfweld junction block, establish right-hand thread on being threaded with tube connector and divide into the back-off sub of left-hand thread, be located at the compensation central tube in the tubing string expansion loop and be clipped in the compensation outer tube and between the compensation central tube and with the claw collar of compensation central tube end welding, form; The anti-apical organ of packer is by the slips housing, be located at 3 band inner conical surfaces of slips shell ends top week 120 ° of side angles slips, be located at slips positioning sleeve on the slips housing, be located at the slips cone of the band dovetail groove in the slips housing, be threaded down, go up the central tube, the big or small hair style positioning joint that is located at slips cone upper surface that are threaded with back-off sub with the slips cone, be located at the lock ring overcoat of establishing leather cup on the step in the big or small hair style positioning joint, overlap within it the band internal tooth and the lock ring of opening, be pressed in the back-off sub composition of lock ring overcoat upper surface.With the left-hand thread of back-off sub with cut off pin tubing string expansion loop and the anti-apical organ of packer are coupled together.With connecing tubing string on the box thread, connect packer down, treat packer set after, pin slips with the slips cone, the tubing string expansion loop is disconnected, play the anti-double action of pushing up of tubing string compensation and packer.
Back-off sub is cylindrical, greater than the top internal diameter, the right-hand thread box thread is established on top to the bottom internal diameter, the left-hand thread box thread is established at the middle part greater than middle part internal diameter, middle part internal diameter;
Central tube is cylindrical, the top external diameter is greater than lower outer diameter, and the bottom, upper end is provided with the left-hand thread male thread, cooperates with the left-hand thread box thread of back-off sub; The outside, central tube middle and lower part is provided with the external tooth that matches with lock ring, and the bottom is provided with male thread and cooperates with the box thread of slips cone.
The lock ring overcoat is cylindrical, and the top internal diameter is greater than middle part internal diameter and bottom internal diameter, and the middle part internal diameter is less than the bottom internal diameter, freely cooperates between middle part and lower outer diameter and the positioning joint top internal diameter, and is spacing by pin.
The utility model compared with prior art has the following advantages: the one, and the utility model singly is not that anti-apical organ is supporting is used for tubing string expansion loop and packer, can also replace anti-jack slips to use and at this moment should remove the compensation central tube, as long as after the packer set, positive tube post, anti-jack slips opens, and is stuck on the internal surface of sleeve pipe, the locking packer, continue positive tube post, back-off sub is thrown off fully, trips out tubing string and gets final product; The 2nd, the utility model is to lean on the left-hand thread of back-off sub that anti-jack slips is opened, the locking packer, suppress locking packer anti-jack slips with prior art by pitching fundamental difference is arranged, the operation of omitted well-flushing, suppressing, thereby reduced workover cost, improved operating efficiency, reduced the injury of working fluid the stratum; The 3rd, be provided with slips cone locking mechanism, the anti-top grappling of packer is more reliable, and fishing is simple and reliable, can be with the pump technology of implementing to give up, omit the tubing string of giving up under special, simplify operation technique, reduce operating cost, alleviated working strength of workers.
Four, description of drawings
Fig. 1---structural representation of the present utility model;
Fig. 2---8 center tube structure schematic diagrames among Fig. 1;
Fig. 3---the structural representation front view of claw collar 21 among Fig. 1;
The lateral view of Fig. 4---Fig. 3;
Fig. 5---the structural representation front view of lock ring 10 among Fig. 1;
The lateral view of Fig. 6---Fig. 5.
Five, embodiment
For further disclosing the technical solution of the utility model, pass through below in conjunction with Figure of description
Embodiment is described in detail;
Shown in Figure of description, the utility model is cylindrical, the middle and upper part be made as tubing string expansion loop, middle and lower part be made as the anti-apical organ of packer, between connect by the left-hand thread back-off sub.The tubing string expansion loop by be located at the external compensation pipe 2 that connects with the top connection 22 of box thread, with its screw thread up and down of upper end, the plumb joint 19 that is connected with the compensation external pipe thread, tooth scarfweld joint 18, the tube connector 17 that is connected with tooth scarfweld joint screw thread with the plumb joint welding, be threaded with tube connector on establish right-hand thread and divide into the back-off sub 14 of left-hand thread, pin 15, be located at its interior compensation central tube 16 of tubing string expansion loop and be clipped in compensate outer tube with compensate between the central tube and with compensate claw collar 20 compositions that weld the central tube end; The anti-apical organ of packer is by slips housing 1, be located at the slips 2 of 3 band inner conical surfaces of 120 ° of all side angles in slips shell ends top, be located at the slips positioning sleeve 3 on the slips housing, be located at the slips cone 5 of the band dovetail groove in the slips housing, be threaded with the slips cone down, go up the central tube 8 that is threaded with back-off sub, be located at the big or small hair style positioning joint 9 of cone upper surface, be located at the lock ring overcoat 11 that is provided with leather cup 13 on the platform in the big or small hair style positioning joint, overlap the lock ring 10 of lower end band internal tooth within it and opening, the back-off sub 14 that is located at lock ring overcoat upper surface is formed.In concrete the application, to be connected with the tubing string of band oil well pump on the utility model, be connected with packer down, arrive the packer set position down, the left-handed pin 15 of cutting off of tubing string right-hand thread direction rotation (dextrorotation) back-off sub 14 left-hand threads, the left-hand thread effect moves down central tube 8, move in the back-off sub 14 relatively, central tube 8 presses down slips cone 5 and cuts off pinning 7, the conical surface of slips cone 5 top slips 2 opens slips 2 to be stuck in and pins packer on the internal surface of sleeve pipe, do not allow on the packer top take off envelope, this moment, leather cup 13 lost the restriction of back-off sub 14, open leather cup 13 and seal oil casing annular space, seal sand grains, do not allow sand grains enter slips 2 places and prevent that slips 2 is malfunctioning, behind slips locking packer, continue the dextrorotation tubing string, back-off sub 14 and central tube 8 are thoroughly thrown off, carry 2.0 meters of tubing strings on this moment, lose the tubing nipple of 2.0 meters at well head, change 0.5 meter tubing nipple again, install well head, the design and construction of tubing string have been finished, the compensating length of tubing string is 1.5 meters, tubing string can freely stretch under the situation of load variations, thereby has avoided oil well pump and top oil pipe bend by pressure, alleviate eccentric wear, guaranteed the shutoff validity of packer simultaneously.

Claims (4)

1, tubing string compensation packer used in a kind of petroleum production engineering is prevented ejection device, it is characterized in that cylindrical, the middle and upper part is made as the tubing string expansion loop, and the middle and lower part is made as the anti-apical organ of packer, between connect by the left-hand thread back-off sub, the tubing string expansion loop is by the top connection that is located at the upper end, compensation outer tube is threaded with it, the plumb joint that is connected with the compensation external pipe thread, the tooth scarfweld joint that is welded to connect with plumb joint, the tube connector that is connected with tooth scarfweld joint screw thread, establish right-hand thread on being threaded with tube connector and divide into the back-off sub of left-hand thread, be located at its interior compensation central tube of tubing string expansion loop, be clipped in the compensation central tube with compensation between the outer tube and form with the claw collar of compensation central tube end welding; The anti-apical organ of packer is by the slips housing, be located at slips positioning sleeve on the slips housing, be located at the slips cone of the band dovetail groove in week in the slips housing, down central tube, the big or small hair style positioning joint that is located at the cone upper surface that is threaded with back-off sub with going up of connecting of slips cone screw thread, be located in the big or small hair style positioning joint on the platform on establish the lock ring overcoat of leather cup, cover is within it with the lock ring of internal tooth and opening be located at the back-off sub composition of lock ring overcoat upper surface.
2, the anti-ejection device of tubing string compensation packer according to claim 1 is characterized in that back-off sub is cylindrical, and the bottom internal diameter is greater than the middle part internal diameter, and the middle part internal diameter is greater than the top internal diameter, and the right-hand thread box thread is established on top, and the left-hand thread box thread is established at the middle part.
3, the anti-ejection device of tubing string compensation packer according to claim 1, it is characterized in that central tube is cylindrical, the top external diameter is greater than lower outer diameter, the bottom, upper end is provided with the left-hand thread male thread, cooperate with back-off sub left-hand thread box thread, the outside, central tube middle and lower part is provided with the external tooth that matches with lock ring, and the bottom is provided with male thread and cooperates with the box thread of slips cone.
4, the anti-ejection device of tubing string compensation packer according to claim 1, it is characterized in that the lock ring overcoat is cylindrical, the top internal diameter is greater than middle part internal diameter and bottom internal diameter, and the middle part internal diameter is less than the bottom internal diameter, freely cooperate between middle part and lower outer diameter and the positioning joint top internal diameter, spacing by pin.
CN 02268996 2002-08-17 2002-08-17 Pipe string compensation packer top-proof device Expired - Fee Related CN2565969Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02268996 CN2565969Y (en) 2002-08-17 2002-08-17 Pipe string compensation packer top-proof device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02268996 CN2565969Y (en) 2002-08-17 2002-08-17 Pipe string compensation packer top-proof device

Publications (1)

Publication Number Publication Date
CN2565969Y true CN2565969Y (en) 2003-08-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02268996 Expired - Fee Related CN2565969Y (en) 2002-08-17 2002-08-17 Pipe string compensation packer top-proof device

Country Status (1)

Country Link
CN (1) CN2565969Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104329032A (en) * 2014-09-23 2015-02-04 中国石油集团渤海钻探工程有限公司 Flexible connector for dual-layer continuous oil pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104329032A (en) * 2014-09-23 2015-02-04 中国石油集团渤海钻探工程有限公司 Flexible connector for dual-layer continuous oil pipes

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee