CN206299366U - A kind of anti-premature setting open hole packer - Google Patents

A kind of anti-premature setting open hole packer Download PDF

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Publication number
CN206299366U
CN206299366U CN201621425126.4U CN201621425126U CN206299366U CN 206299366 U CN206299366 U CN 206299366U CN 201621425126 U CN201621425126 U CN 201621425126U CN 206299366 U CN206299366 U CN 206299366U
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China
Prior art keywords
ring
piston
mandrel
premature setting
open hole
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Active
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CN201621425126.4U
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Chinese (zh)
Inventor
庞瑞杰
李江平
陈仁锦
刘建锋
王金龙
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Top Energy Technology (huizhou) Co Ltd
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Top Energy Technology (huizhou) Co Ltd
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Priority to CN201621425126.4U priority Critical patent/CN206299366U/en
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Abstract

A kind of anti-premature setting open hole packer, including mandrel, the upper end of the mandrel and top contact are connected, the lower end of the mandrel and bottom fitting are connected, the upper packing element being socketed on mandrel is sequentially provided between the top contact and bottom fitting, upper packing element baffle ring, internal slip component, piston component, lower rubber cylinder baffle ring and lower rubber cylinder, shear pin ring is provided between the upper packing element baffle ring and internal slip component, the shear pin ring lower end connection internal slip handling tube upper end, starting is installed on the shear pin ring and sets screw, being provided with the piston component prevents premature setting mechanism;The utility model can prevent the open hole packer in tubing string from entering under during premature setting, the success rate that fracturing strings are smoothly lowered into desired depth is improved with this, it is ensured that job safety.

Description

A kind of anti-premature setting open hole packer
Technical field
The utility model is related to oil tool field, especially a kind of anti-premature setting open hole packer.
Background technology
Horizontal well bore hole staged fracturing technology is the conventional technology of oil gas field storey increase design, and it has, and technology is simple, operation The advantage of efficiency high, and be widely used in low hole, hypotonic and Low pressure reservoir horizontal well storey increase design.Bore hole is insulated Device, sliding sleeve are the important components in horizontal well bore hole staged fracturing technology.In Completion Operations, due to fracturing strings Horizontal segment length, the reason such as dog-leg severity is big, hole diameter is irregular under enter when being hampered, it is necessary on put and let live dynamic tubing string unblocking, upper Put during letting live dynamic unblocking, the easy premature setting of open hole packer in tubing string, so as to cause to enter under fracturing strings Less than desired depth, operation is caused to fail.
Utility model content
In order to solve the above problems, the utility model provides a kind of anti-premature setting open hole packer, in preventing tubing string Open hole packer enter under during premature setting, the success that fracturing strings are smoothly lowered into desired depth is improved with this Rate, it is ensured that job safety.
The technical solution of the utility model is as follows:A kind of anti-premature setting open hole packer, including mandrel, the mandrel Upper end and top contact are connected, and the lower end of the mandrel and bottom fitting are connected, between the top contact and bottom fitting according to It is secondary to be provided with upper packing element, upper packing element baffle ring, internal slip component, piston component, lower rubber cylinder baffle ring and the lower glue being socketed on mandrel Cylinder, is provided with shear pin ring between the upper packing element baffle ring and internal slip component, the shear pin ring lower end connects internal slip component upper end, Starting is installed on the shear pin ring and sets screw, being provided with the piston component prevents premature setting mechanism.
Further, it is described prevent premature setting mechanism be provided with prevent wall friction power be applied to starting set on screw Clamping block, is provided with the spacing ring for supporting clamping block below the clamping block, the spacing ring and mandrel are fitted;The core Axle is provided with fluted, and the snap ring for support limit ring is provided with the groove, and the spacing ring is socketed on snap ring.
Further, the piston component is provided with piston and piston outer barrel, and the piston is located in piston outer barrel, and described Piston and mandrel are fitted, and the clamping block is located at piston;The mandrel is provided with pressure transmission hole, and the pressure transmission hole is located at piston Lower section;The internal slip component is provided with internal slip, stop screw and internal slip handling tube, and the stop screw is arranged in described In screw hole on slips handling tube, and the internal slip handling tube lower end and the connection of piston outer barrel upper end;The upper packing element gear Ring lower end and the piston upper end connect, and the lower rubber cylinder baffle ring upper end and piston outer barrel lower end connect.
Further, the piston upper end is provided with the pawl matched with internal slip, the inner side of the piston and outer Side is designed with the sealing ring sealed with mandrel and piston outer barrel.
Further, it is designed with preventing glue between the top contact and upper packing element and between lower rubber cylinder and bottom fitting The support ring that bucket is extruded in pressure-bearing.
Further, the sealing with stem seal is designed with the top contact, bottom fitting and lower rubber cylinder baffle ring Circle.
Further, the spacing ring is provided with the through hole relative with pressure transmission hole.
Further, the support ring between the top contact and upper packing element and between lower rubber cylinder and bottom fitting has Two.
Further, the centre inside the upper packing element and lower rubber cylinder be designed with being designed with groove, and the groove and Groove match helps seal ring.
Further, it is described to help seal ring for metal.
Beneficial effect using above technical scheme is:Open hole packer exterior part of the present utility model is provided with anti-shifting to an earlier date The locking mechanism for setting, the borehole wall to the frictional force of exterior part is applied on snap ring, is set without being applied to starting On screw, premature setting during packer enters under is effectively prevent, and enter to be increased when being hampered under and carry or mistake Pressure tonnage unblocking, improves operability when tubing string enters difficulty under, meanwhile, open hole packer mechanism of the present utility model is tight Gather, external diameter is small, length is short, under to enter resistance small, can obviously reduce instrument and enter difficulty under long horizontal sections.
Brief description of the drawings
Fig. 1 is the profile of the utility model preferred embodiment.
Fig. 2 is the enlarged fragmentary cross section after the setting of the utility model preferred embodiment.
The title of the corresponding component of the digitized representation in figure:1. a kind of anti-premature setting open hole packer, 2. top contact, 3. support ring, 4. goes up packing element, 5. goes up packing element baffle ring, and 61. shear pin rings, 62. startings set screw, 7. internal slip component, card in 71. Watt, 72. stop screws, 73. internal slip handling tubes, 8. piston component, 81. pistons, 811. pawls, 82. clamping blocks, 83. is spacing Ring, 831. through holes, 84. snap rings, 85. piston outer barrels, 9. lower rubber cylinder baffle ring, 10. lower rubber cylinder, 11. bottom fittings, 12. mandrels, 121. pressure transmission holes, 13. help seal ring, 14. sealing rings, 15. holding screws.
Specific embodiment
As shown in drawings, a kind of anti-premature setting open hole packer 1, including mandrel, divides above and below the mandrel It is not connected with top contact 2 and bottom fitting, is sequentially provided between the top contact 2 and bottom fitting 11 and is socketed in mandrel 12 On upper packing element 4, upper packing element baffle ring 5, internal slip component 7, piston component 8, lower rubber cylinder baffle ring 9 and lower rubber cylinder 10.
The upper lower end of packing element baffle ring 5 is fixedly connected with piston upper end, and lower rubber cylinder baffle ring upper end and piston outer barrel lower end connect;On Shear pin ring 61, shear pin ring lower end connection internal slip handling tube upper end, on shear pin ring are provided between packing element baffle ring 5 and internal slip component Starting is installed and sets screw 62, being provided with piston component prevents premature setting mechanism.
Preventing premature setting mechanism to be provided with prevents wall friction power to be applied to the clamping block 82 that starting is set on screw, clamping The spacing ring 83 for supporting clamping block is provided with below block, spacing ring and mandrel are fitted;Mandrel is provided with fluted, in groove The snap ring 84 for support limit ring is provided with, and spacing ring is socketed on snap ring.
Piston component is provided with piston 81 and piston outer barrel 85, and piston upper end is provided with the pawl 811 matched with internal slip, living The inner side and outer side for filling in lower end is designed with the sealing ring 14 sealed with mandrel and piston outer barrel;Clamping block is located at piston, core Pressure transmission hole 121 is additionally provided with axle, pressure transmission hole is located at piston lower section, and spacing ring is provided with the through hole 831 relative with pressure transmission hole.
Internal slip component is provided with internal slip 71, stop screw 72 and internal slip handling tube 73, and stop screw is arranged on described In screw hole on internal slip handling tube, and internal slip handling tube lower end and the connection of piston outer barrel upper end.
It is designed with preventing glue bucket quilt in pressure-bearing between top contact 2 and upper packing element and between lower rubber cylinder and bottom fitting The support ring 3 of extrusion, and centre inside upper packing element and lower rubber cylinder is designed with groove, is designed with groove and groove match Metal promoted seal ring 13, helps the effect of seal ring to be mainly during swollen envelope, the first expansion contact borehole wall of intermediate groove part, it is ensured that glue The sealing effectiveness of cylinder;The sealing ring 14 with stem seal, and top are designed with top contact, bottom fitting and lower rubber cylinder baffle ring Portion's joint 2 and bottom fitting 11 are provided with holding screw 15.
Workflow of the present utility model:First, circulation setting ball seat is connected on tubing string lower end, sliding sleeve and bore hole is insulated Device is gone into the well in being sequentially ingressed into tubing string, turn on pump circulation after tubing string is lowered into desired depth, and setting ball is put into well head, is continued cycling through Release, setting ball is sent in circulation setting ball seat, the circulation bore closure of circulation setting ball seat, pressurization in tubing string.
Then, when the starting that pressure reaches open hole packer sets pressure, starting sets active force of the screw in piston Under be sheared, the upper packing element 4 of piston upwards compression, when the distance of piston upwards is bigger than the width of clamping block, clamping Block loses the support of piston, simultaneously because the downward active force of piston outer barrel, clamping block drops toward mandrel direction, so as to discharge Piston outer barrel, piston outer barrel and lower rubber cylinder baffle ring motion compresses lower rubber cylinder downwardly together.
Finally, continue to improve pressure in tubing string, when the minimum that pressure reaches open hole packer sets pressure completely, up and down Packing element is by completely compacted, the annular space between sealing bore hole and mandrel, so that point is insulated for bore hole staged fracturing provides pressure, this When, internal slip is engaged on the pawl on piston, open hole packer is fixed on the state that sets completely, and upper lower rubber cylinder is in pipe internal pressure Power will not also produce retraction after releasing, afterwards, it is possible to which opening sliding sleeve according to job requirements carries out fracturing work.
The utility model provides a kind of anti-premature setting open hole packer, prevents the open hole packer in tubing string from entering under Premature setting in journey, improves the success rate that fracturing strings are smoothly lowered into desired depth, it is ensured that job safety with this.
Above is the following accompanying drawing in reference to the utility model embodiment, to the technical side in the utility model embodiment Case is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the utility model, rather than Whole embodiments, based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work Under the premise of the every other embodiment that is obtained, belong to the scope of the utility model protection.

Claims (10)

1. a kind of anti-premature setting open hole packer, including mandrel, the upper end of the mandrel and top contact are connected, the mandrel Lower end and bottom fitting connection, it is characterised in that be sequentially provided between the top contact and bottom fitting and be socketed in mandrel On upper packing element, upper packing element baffle ring, internal slip component, piston component, lower rubber cylinder baffle ring and lower rubber cylinder, the upper packing element baffle ring Shear pin ring is provided between internal slip component, the shear pin ring lower end connection internal slip component upper end is installed on the shear pin ring There is starting to set screw, being provided with the piston component prevents premature setting mechanism.
2. a kind of anti-premature setting open hole packer according to claim 1, it is characterised in that described to prevent premature setting Mechanism is provided with prevents wall friction power to be applied to the clamping block that starting is set on screw, is provided with for propping up below the clamping block The spacing ring of clamping block is supportted, the spacing ring and mandrel are fitted;The mandrel is provided with fluted, be provided with the groove for The snap ring of support limit ring, and the spacing ring is socketed on snap ring.
3. a kind of anti-premature setting open hole packer according to claim 2, it is characterised in that the piston component is provided with Piston and piston outer barrel, the piston are located in piston outer barrel, and the piston and mandrel laminating, and the clamping block is located at piston Lower end;The mandrel is provided with pressure transmission hole, and the pressure transmission hole is located at piston lower section.
4. a kind of anti-premature setting open hole packer according to claim 2, it is characterised in that the internal slip component sets There are internal slip, stop screw and internal slip handling tube, the stop screw is arranged on the screw hole on the internal slip handling tube It is interior, and the internal slip handling tube lower end and the connection of piston outer barrel upper end;The upper packing element baffle ring lower end and the piston upper end Connection, the lower rubber cylinder baffle ring upper end and piston outer barrel lower end connect.
5. a kind of anti-premature setting open hole packer according to claim 4, it is characterised in that the piston upper end is provided with The pawl matched with internal slip, the inner side and outer side of the piston is designed with the sealing sealed with mandrel and piston outer barrel Circle.
6. a kind of anti-premature setting open hole packer according to claim 1, it is characterised in that the top contact and upper The support ring for preventing glue bucket to be extruded in pressure-bearing is designed between packing element and between lower rubber cylinder and bottom fitting.
7. a kind of anti-premature setting open hole packer according to claim 1, it is characterised in that the top contact, bottom The sealing ring with stem seal is designed with portion's joint and lower rubber cylinder baffle ring.
8. a kind of anti-premature setting open hole packer according to claim 2, it is characterised in that the spacing ring is provided with The through hole relative with pressure transmission hole.
9. a kind of anti-premature setting open hole packer according to claim 5, it is characterised in that the top contact and upper Support ring between packing element and between lower rubber cylinder and bottom fitting has two.
10. a kind of anti-premature setting open hole packer according to claim 1-9 any one, it is characterised in that described Centre inside upper packing element and lower rubber cylinder is designed with groove, and the groove being designed with helping seal ring with groove match.
CN201621425126.4U 2016-12-23 2016-12-23 A kind of anti-premature setting open hole packer Active CN206299366U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621425126.4U CN206299366U (en) 2016-12-23 2016-12-23 A kind of anti-premature setting open hole packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621425126.4U CN206299366U (en) 2016-12-23 2016-12-23 A kind of anti-premature setting open hole packer

Publications (1)

Publication Number Publication Date
CN206299366U true CN206299366U (en) 2017-07-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397154A (en) * 2018-03-02 2018-08-14 荆州市赛瑞能源技术有限公司 A kind of anti-hydraulic packer being hampered
CN112878951A (en) * 2021-01-18 2021-06-01 大庆油田有限责任公司 Time-delay setting shear pin packer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108397154A (en) * 2018-03-02 2018-08-14 荆州市赛瑞能源技术有限公司 A kind of anti-hydraulic packer being hampered
CN108397154B (en) * 2018-03-02 2019-11-26 荆州市赛瑞能源技术有限公司 A kind of anti-hydraulic packer being hampered
CN112878951A (en) * 2021-01-18 2021-06-01 大庆油田有限责任公司 Time-delay setting shear pin packer

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