CN202745798U - Layered water injection centering packer of directional well - Google Patents

Layered water injection centering packer of directional well Download PDF

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Publication number
CN202745798U
CN202745798U CN 201220279433 CN201220279433U CN202745798U CN 202745798 U CN202745798 U CN 202745798U CN 201220279433 CN201220279433 CN 201220279433 CN 201220279433 U CN201220279433 U CN 201220279433U CN 202745798 U CN202745798 U CN 202745798U
Authority
CN
China
Prior art keywords
well
central tube
piston rod
packer
flushing
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.)
Withdrawn - After Issue
Application number
CN 201220279433
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Chinese (zh)
Inventor
毕福伟
李宪文
郭方元
巨亚锋
李明
于九政
晏耿成
王子建
胡美艳
罗必林
申晓莉
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.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas 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 China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN 201220279433 priority Critical patent/CN202745798U/en
Application granted granted Critical
Publication of CN202745798U publication Critical patent/CN202745798U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model discloses a layered water injection centering packer of a directional well, and the packer is designed in order to improve the sealing effect of the packer in the directional well and meet the setting requirements of different well deviation of the directional well; the layered water injection centering packer of the directional well mainly comprises a central pipe for connecting an upper connector and a lower connector, a well-flushing piston cylinder which is connected with the upper connector, an exchange connector which is connected to the inner wall of the well-flushing position cylinder, a liner which is arranged between the exchange connector and the central pipe, a well-flushing piston which is arranged between the well-flushing piston cylinder and the liner, a rubber tube seat which is connected with the well-flushing piston cylinder, a side rubber tube which is sleeved outside the liner, a spacer ring, a middle rubber tube, a propelling head which is arranged below the side rubber tube, a propelling sleeve, a setting head, a lock ring hang which is sleeved outside the central pipe, a lock ring, an L-shaped retainer ring, a setting piston which is arranged in a setting piston cylinder and the like. According to the layered water injection centering packer of the directional well, a centering device is additionally arranged on a conventional packer, so that the stress around the sealed rubber tube is uniform, the sealing performance of the packer of the directional well can be improved, the service life of a dispensing string is prolonged and the setting requirements of different well deviation of the directional well are met. Meanwhile, the packer works through a hydraulic setting method, and has setting centering, setting unblocking and inverse well-flushing functions.

Description

Directional well seperated layer water injection righting type packer
Technical field
The utility model relates to a kind of directional well seperated layer water injection righting type packer, belongs to directional well separate zone waterflooding technology field.
Background technology
At present, along with going deep into of oil field development, oil-water well adopts the exploitation of directional well cluster well group mode more.Conventional packer does not have the righting function, under directional well hole deviation and gravitational effect effect, tubing string can be partial to one side of sleeve pipe, packing element unbalance stress, packing element shoulder stress are concentrated when producing packer setting, sealing performance descends, upper and lower water filling layer is communicated with, affect the problems such as dispensing effect and shortening separate injection tubing string application life, and existing slant hole packer can not satisfy the righting function of high angle hole.
Summary of the invention
The purpose of this utility model is to provide a kind of directional well seperated layer water injection righting type packer, and the sealing effectiveness that it can improve packer in the directional well satisfies the requirement that sets of the different hole deviations of directional well.
Concrete technical scheme of the present utility model is as follows:
The utility model packer top connection lower end external screw thread connects the well-flushing piston rod, and is provided with piston rod sealing ring A between joint face.The central tube tube wall is provided with radially pressure guide hole and bottom pressure guide hole radially of top radial hole, middle part, and central tube middle part external surface is provided with the inclined-plane convex shoulder.The top connection lower internal thread connects central tube, and the top connection barrel is provided with the radial hole that communicates with central tube top radial hole.Top connection radial hole below is provided with the exchange joint that is threadedly connected to well-flushing piston rod inwall, is provided with central tube sealing ring A between itself and central tube contact surface.Be connected bushing pipe between exchange joint bottom and central tube, and be provided with the bushing pipe sealing ring between joint face, bushing pipe be provided with the tube wall radial hole and in establish the axial well-flushing passage that is communicated with this radial hole.Set the axial passage that connects spring in the exchange joint.The spring below is provided in a side of the well-flushing piston between well-flushing piston rod and the bushing pipe, is provided with inner seal circle and outside sealing ring at the well-flushing piston.
Well-flushing piston rod cylinder body lower end is provided with radial hole, and the bottom connects glue tube base in the cylinder, is provided with the glue tube base sealing ring between itself and bushing pipe.Cover has limit packing element A, spacer ring A, packing element, spacer ring B and limit packing element B successively on the outer wall that is arranged in the bushing pipe below the glue tube base.Packing element B below contact in limit advances head, advance an inwall to connect to advance cover, propelling sleeve wall be provided with locking nut and can with the radial hole of the axial well-flushing channel connection of bushing pipe.Advance the contact of cover below to set head, set uniform radial hole place, head upper end and be provided with steel ball, set a lower outside connection and set piston rod, and be provided with piston rod sealing ring B between joint face, set and connect central tube in the head, and be provided with between joint face and set a sealing ring, set a bottom radial hole and central tube middle part radially pressure guide hole communicate.Setting head below contact lock ring hangs, lock ring is linked with lock ring and hangs outside sealing ring, lock ring connects central tube in hanging, and be provided with central tube sealing ring B between joint face, the step place is provided with to link with gingival cyst of mucous gland in the newborn and connects the lock ring that sets piston rod outside the lock ring hanging end section, the L-type baffle ring connects central tube and is fixed on step place in the lock ring hanging end section by the deblocking pin, and the L-type baffle ring is fixed on step place in the lock ring hanging end section by the deblocking pin, and lock ring is stuck in the L-type baffle ring galianconism.
Set piston and be stuck in and set piston rod lower step place, its bottom radial hole and central tube bottom radially pressure guide hole communicate, and are respectively equipped with piston rod sealing ring C and central tube sealing ring C outside setting in the piston.The lower contact upper internal threaded connects central tube, and is connected in and sets piston rod inwall lower end by setting pin, and is provided with piston rod sealing ring D between joint face.
The utility model directional well seperated layer water injection righting type packer on conventional packer the increase erection device, make cartridge stressed even all around, can improve the sealing performance of directional well packer, prolong the application life of separate injection tubing string, satisfy the requirement that sets of the different hole deviations of directional well.Simultaneously, this packer adopts the hydraulic setting mode to work, and has the righting of setting, sets deblocking and anti-flushing well function.
Description of drawings
Fig. 1 is directional well seperated layer water injection righting type packer construction schematic diagram.
Fig. 2 is lock ring extension and lock ring and L-type baffle ring syndeton schematic diagram.
The specific embodiment
With reference to Fig. 1 and 2 embodiment of the present utility model is further specified:
Embodiment:
The utility model packer top connection 1 lower end external screw thread connects well-flushing piston rod 3, and is provided with piston rod sealing ring A2 between joint face.Central tube 17 tube walls are provided with radially pressure guide hole 34 and bottom pressure guide hole 33 radially of top radial hole, middle part, and central tube 17 middle part external surfaces are provided with the inclined-plane convex shoulder.Top connection 1 lower internal thread connects central tube 17, and top connection 1 barrel is provided with the radial hole that communicates with central tube 17 top radial holes.Top connection 1 radial hole below is provided with the exchange joint 6 that is threadedly connected to well-flushing piston rod 3 inwalls, is provided with central tube sealing ring A4 between itself and central tube 17 contact surfaces.Exchange joint 6 bottoms are connected bushing pipe 7 with 17 of central tubes, and are provided with bushing pipe sealing ring 5 between joint face, and bushing pipe 7 is provided with the axial well-flushing passage that the tube wall radial hole is established this radial hole of connection in also.Set the axial passage that connects spring 8 in the exchange joint 6, spring 8 belows are provided in a side of the well-flushing piston 9 between well-flushing piston rod 3 and the bushing pipe 7, and well-flushing piston 9 is provided with inner seal circle 11 and outside sealing ring 10.
Well-flushing piston rod 3 cylinder body lower ends are provided with radial hole, and the bottom connects glue tube base 12 in the cylinder, and itself and 7 of bushing pipes are provided with glue tube base sealing ring 13.Cover has limit packing element A14, spacer ring A15, packing element 16, spacer ring B and limit packing element B successively on the outer wall that is arranged in the bushing pipe 7 below the glue tube base 12.Packing element B below contact in limit advances 18, advances 18 inwall to connect and advances cover 20, advance cover 20 barrels be provided with locking nut 19 and can with the radial hole of bushing pipe 7 axial well-flushing channel connections.Advance the contact of cover 20 belows to set 21, set four uniform radial hole places of 21 upper end steel ball 22 respectively is housed, set 21 a lower outsides connection and set piston rod 29, and be provided with piston rod sealing ring B42 between joint face, set in 21 and connect central tube 17, and be provided with between joint face and set a sealing ring 23, set 21 a bottom radial hole and central tube 17 middle parts radially pressure guide hole 34 communicate.Set 21 a belows contact lock ring and hang 25, lock ring is hung 25 and is provided with lock ring extension outside sealing ring 24, lock ring is hung in 25 and is connect central tube 17, and be provided with central tube sealing ring B44 between joint face, lock ring is hung outside 25 bottoms step place and is provided with to link with gingival cyst of mucous gland in the newborn and connects the lock ring 27 that sets piston rod 29, L-type baffle ring 28 connects central tube 17 and is fixed on lock ring by deblocking pin 26 hangs step place in 25 bottoms, and lock ring 27 is stuck in L-type baffle ring 28 galianconism.
Set piston 30 and be stuck in and set piston rod 29 lower step places, its bottom radial hole and central tube 17 bottoms radially pressure guide hole 33 communicate, and set piston 30 and are provided with piston rod sealing ring C52 and central tube sealing ring C54.Lower contact 32 upper internal threaded connect central tube 17, and are connected in and set piston rod 29 inwall lower ends by setting pin 31, and are provided with piston rod sealing ring D62 between joint face.
Operating principle of the present utility model is as follows:
The righting function:
With oil pipe with the utility model packer G.I.H.During packer setting, by the bottom on the central tube 17 radially pressure guide hole 33 and middle part radially pressure guide hole 34 apply hydraulic pressure from oil pipe, cut off and set pin 31, promotion sets piston 30, set piston rod 29, set 21, advance cover 20 and advance 18 to move on the whole, thereby compression limit packing element A14, limit packing element B and middle packing element 16 make its diameter become large, the sealing oil sets annular space, and by setting the single-phase motion of gingival cyst of mucous gland in the newborn button between piston rod 29 and the lock ring 27, the locking seating and sealing unit is realized setting.When setting, set on 21 and move, when its inner steel ball 22 runs into inclined-plane convex shoulder on central tube 17 outer walls, outstandingly set 21 and be supported on the casing wall, namely four symmetrical steel balls 22 of packer all are supported on the casing wall, realize the righting function.
The backwash function:
Behind the packer setting, advance on the cover 20 and move, the axial well-flushing passage that moves on the radial hole that advances cover 20 lower ends with in the bushing pipe 7 is connected, adds hydraulic pressure from sleeve pipe, hydraulic pressure promotes to move on the well-flushing piston 9 by the radial hole of well-flushing piston rod 3 lower ends, be communicated with bushing pipe 7 tube wall radial holes, hydraulic pressure conducts downwards by the axial well-flushing passage of bushing pipe 7, by advancing the radial hole of cover 20 bottoms, is transmitted to the oil jacket annular space under the packing element, make hydraulic pressure walk around cartridge, realize the anti-flushing well function.
Decapsulation functions:
The upper lifting pipe post drives on central tube 17 and the lock ring extension 25 and moves, and because lock ring 27 is that the gingival cyst of mucous gland in the newborn button links to each other with setting piston rod 29, and lock ring 27 can't move, and hinder baffle ring 28 with moving on the lock ring extension 25, cause deblocking pin 26 to be cut off.Baffle ring 28 loses connection, moves down, so that lock ring 27, set piston 30, set piston rod 29, set 21, advance cover 20 and advance 18 to lose and stop also and move down that cartridge is subjected to self elasticity diastole, realizes deblocking.Simultaneously steel ball 22 moves down, and is retracted to set in 21.

Claims (1)

1. directional well seperated layer water injection righting type packer is characterized in that:
Top connection (1) lower end external screw thread connects well-flushing piston rod (3), and is provided with piston rod sealing ring A (2) between joint face; Central tube (17) tube wall is provided with radially pressure guide hole (34) and bottom pressure guide hole (33) radially of top radial hole, middle part, and central tube (17) middle part external surface is provided with the inclined-plane convex shoulder; Top connection (1) lower internal thread connects central tube (17), and top connection (1) barrel is provided with the radial hole that communicates with central tube (17) top radial hole; Top connection (1) radial hole below is provided with the exchange joint (6) that is connected in well-flushing piston rod (3) inwall, is provided with central tube sealing ring A (4) between itself and central tube (17) contact surface; Be connected bushing pipe (7) between exchange joint (6) bottom and central tube (17), and be provided with bushing pipe sealing ring (5) between joint face, bushing pipe (7) be provided with the tube wall radial hole and in establish the axial well-flushing passage of this radial hole of connection; Set the axial passage that connects spring (8) in the exchange joint (6); Spring (8) below is provided in a side of the well-flushing piston (9) between well-flushing piston rod (3) and the bushing pipe (7), is provided with inner seal circle (11) and outside sealing ring (10) at well-flushing piston (9);
Well-flushing piston rod (3) cylinder body lower end is provided with radial hole, and the bottom connects glue tube base (12) in the cylinder, is provided with glue tube base sealing ring (13) between itself and bushing pipe (7); Cover has limit packing element A (14), spacer ring A (15), packing element (16), spacer ring B and limit packing element B successively on the outer wall of the bushing pipe (7) that is arranged in glue tube base (12) below; Packing element B below contact in limit advances head (18), advances head (18) inwall to connect and advances cover (20), advance cover (20) barrel be provided with locking nut (19) and can with the radial hole of the axial well-flushing channel connection of bushing pipe (7); Advance the contact of cover (20) below to set head (21), set uniform radial hole place, head (21) upper end and be provided with steel ball (22), set the connection of head (21) lower outside and set piston rod (29), and be provided with piston rod sealing ring B (42) between joint face, set in the head (21) and connect central tube (17), and be provided with sealing ring (23) between joint face, set that the radially pressure guide hole (34) on the tube wall communicates in the middle part of head (21) bottom radial hole and the central tube (17); Set head (21) below contact lock ring and hang (25), lock ring extension (25) is provided with lock ring and hangs outside sealing ring (24), and lock ring is hung in (25) and connect central tube (17), and is provided with central tube sealing ring B (44) between joint face; Lock ring is hung outer step place, (25) bottom and is provided with to link with gingival cyst of mucous gland in the newborn and connects the lock ring (27) that sets piston rod (29), L-type baffle ring (28) connects central tube (17) by deblocking pin (26) and is fixed on lock ring hangs step place in (25) bottom, and lock ring (27) is stuck in L-type baffle ring (28) galianconism;
Setting piston (30) is stuck in and sets piston rod (29) lower step place, its radial hole and central tube (17) bottom, bottom radially pressure guide hole (33) communicates, and is respectively equipped with piston rod sealing ring C (52) and central tube sealing ring C (54) outside setting in the piston (30); Lower contact (32) upper internal threaded connects central tube (17), and is connected in and sets piston rod (29) lower end by setting pin (31), and is provided with piston rod sealing ring D (62) between joint face.
CN 201220279433 2012-06-13 2012-06-13 Layered water injection centering packer of directional well Withdrawn - After Issue CN202745798U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220279433 CN202745798U (en) 2012-06-13 2012-06-13 Layered water injection centering packer of directional well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220279433 CN202745798U (en) 2012-06-13 2012-06-13 Layered water injection centering packer of directional well

Publications (1)

Publication Number Publication Date
CN202745798U true CN202745798U (en) 2013-02-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220279433 Withdrawn - After Issue CN202745798U (en) 2012-06-13 2012-06-13 Layered water injection centering packer of directional well

Country Status (1)

Country Link
CN (1) CN202745798U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485744A (en) * 2012-06-13 2014-01-01 中国石油天然气股份有限公司 Separated zone water injection centralizing type packer of directional well
CN104373074A (en) * 2013-08-15 2015-02-25 中国石油天然气股份有限公司 Water injection well packer capable of being unpacked in grade-by-grade manner
CN110424922A (en) * 2019-08-05 2019-11-08 中国石油天然气股份有限公司 A kind of nonmetallic anchoring packer anti-flushing well method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485744A (en) * 2012-06-13 2014-01-01 中国石油天然气股份有限公司 Separated zone water injection centralizing type packer of directional well
CN103485744B (en) * 2012-06-13 2016-01-20 中国石油天然气股份有限公司 Directional well seperated layer water injection righting type packer
CN104373074A (en) * 2013-08-15 2015-02-25 中国石油天然气股份有限公司 Water injection well packer capable of being unpacked in grade-by-grade manner
CN110424922A (en) * 2019-08-05 2019-11-08 中国石油天然气股份有限公司 A kind of nonmetallic anchoring packer anti-flushing well method
CN110424922B (en) * 2019-08-05 2021-09-28 中国石油天然气股份有限公司 Non-metal anchoring packer backwashing method

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130220

Effective date of abandoning: 20160120

C25 Abandonment of patent right or utility model to avoid double patenting