CN203321417U - Slip-free facture packer for oil and gas fields - Google Patents
Slip-free facture packer for oil and gas fields Download PDFInfo
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- CN203321417U CN203321417U CN2013203205038U CN201320320503U CN203321417U CN 203321417 U CN203321417 U CN 203321417U CN 2013203205038 U CN2013203205038 U CN 2013203205038U CN 201320320503 U CN201320320503 U CN 201320320503U CN 203321417 U CN203321417 U CN 203321417U
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Abstract
The utility model discloses a slip-free fracture packer for oil and gas fields, and belongs to the field of fracture technologies for oilfields. The slip-free fracture packer is characterized in that a standby ring is nested into the slip-free fracture packer via the lower end of an upper joint and is matched with external threads, and a set screw is screwed into the slip-free fracture packer via a threaded hole of the standby ring; a short rubber sleeve, a distance ring and a long rubber sleeve are nested into a sealing surface via the lower end of the upper joint; a sealing ring is arranged in a sealing groove of an upper hydraulic cylinder, the upper hydraulic cylinder is nested into the slip-free fracture packer via the lower end of the upper joint, another sealing ring is arranged in a sealing groove of a middle hydraulic cylinder seat, and trapezoidal internal threads of the middle hydraulic cylinder seat are connected with trapezoidal external threads of the upper joint; a middle hydraulic cylinder is nested into the slip-free fracture packer via the lower end of the middle hydraulic cylinder seat; a lower hydraulic cylinder is nested into the slip-free fracture packer via the lower end of the middle hydraulic cylinder seat and is connected with internal threads of the middle hydraulic cylinder; trapezoidal internal threads of a lower hydraulic cylinder seat are connected with trapezoidal external threads of the middle hydraulic cylinder seat; an adjusting ring is nested into the slip-free fracture packer via the lower end of the lower hydraulic cylinder seat and is connected with external threads of a middle ledge until the adjusting ring clings to the lower hydraulic cylinder; setting shear pins for locking the adjusting ring and the lower hydraulic cylinder are arranged on the adjusting ring and the lower hydraulic cylinder. The slip-free fracture packer has the advantage that multiple stages of packers are combined with one another, so that multi-layer fracture construction can be implemented.
Description
Technical field
The utility model relates to a kind of oil gas field to be used without the slips fracturing packer, belongs to the oil field compression fracture technical field.
Background technology
At present, packer is the important downhole tool of oil extraction in oil field, is the special tool of realizing the packing of oil jacket annular space, plays the separation formation function, is mainly used in separate zone water shutoff, pressure break, acidifying and gaslift completion construction operation etc.What most of fracturing string was used is mechanical type and hydraulic packer, and tube post gravity or hydraulic setting, can only realize once setting, can not restting, and, with slips, bring very large difficulty to follow-up deblocking operation.Similar other product bearing capacities can only meet the 50MPa operting differential pressure, and tensile strength is low, can't meet the instructions for use of 70MPa operting differential pressure.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of oil gas field to use without the slips fracturing packer.
The purpose of this utility model is: provide a kind of oil gas field to use without the slips fracturing packer, can not set in the tool tubular column decentralization process, promote fluid cylinder by chock pressure difference and cut off shear pin in fracturing process, make Multi-stage hydraulic cylinder compression packing element, complete and set.The instrument bearing capacity reaches 70MPa, and sealing performance is stable, and tensile strength reaches 800kN.Tool construction is simple, and latus rectum is large, and deblocking voluntarily after pressure release, can repeatedly set, but solution is honored as a queen, fixed tubular column carries out lower step operation.And can, by the combination of multiple-string packer, realize the multiple fracturing construction.
A kind of oil gas field is used without the slips fracturing packer, and there is a trapezoidal external screw thread top connection lower end, and there is an oil pipe internal thread upper end; Standby ring upper end is an internal thread; Standby ring is inserted in external screw thread and coordinates by the top connection lower end, and holding screw screws in from the screwed hole of standby ring; It inside and outside long packing element type, is all disc; The upper and lower two ends of spacer ring are plane; It inside and outside short rubber cylinder, is all disc; Short rubber cylinder, spacer ring, long packing element type are nested on sealing surface by the lower end of top connection; Inside, upper fluid cylinder upper end is sealing surface; Inside, middle fluid cylinder seat upper end is a ladder type internal thread, and middle fluid cylinder seat lower end is a ladder type external screw thread, and ladder type external screw thread root has 2 circular holes; Inside, middle fluid cylinder upper end is sealing surface; Sealing ring is enclosed in the seal groove of fluid cylinder, and upper fluid cylinder is inserted in from the lower end of top connection, and sealing ring is enclosed in the seal groove of middle fluid cylinder seat, and the ladder type internal thread of middle fluid cylinder seat is connected with the ladder type external screw thread of top connection; The middle fluid cylinder therefrom lower end of fluid cylinder seat is inserted in, and middle fluid cylinder external screw thread is connected with the internal thread of upper fluid cylinder; Inside, lower fluid cylinder upper end is sealing surface; Inside, lower fluid cylinder seat upper end is a ladder type internal thread; The adjustment ring inner headed face is an internal thread; Sealing ring is in the seal groove of lower fluid cylinder, and the lower fluid cylinder therefrom lower end of fluid cylinder seat is inserted in the internal thread of middle fluid cylinder and is connected; Sealing ring is enclosed in the seal groove of lower fluid cylinder seat, and the ladder type internal thread of lower fluid cylinder seat is connected with the ladder type external screw thread of middle fluid cylinder seat; Adjustment ring from the lower end of fluid cylinder seat be inserted in, adjustment ring is connected with the external screw thread of middle shoulder, adjustment ring is until be adjacent to lower fluid cylinder, set shear pin from the screwed hole of fluid cylinder screw in, and be inserted in the annular groove of adjustment ring; Set the shear pin locking on adjustment ring and lower fluid cylinder.
In order to guarantee that in assembling process, packing element, in original state, has designed standby ring in top connection, can adjust the distance between packing element.
In order to meet the multistage fracturing demand, the packer latus rectum is 56mm.
For guarantee packer can restting, deblocking, designed long packing element type 4 and the short rubber cylinder 6 of special material, the poor 70MPa of pressure-bearing.
In order to guarantee the tensile strength of packer, special acme thread and locking gear have been designed on top connection 1, middle fluid cylinder seat 9 and lower fluid cylinder seat 13, screw thread tensile strength 800kN.
In order to guarantee the bearing strength of packer, fluid cylinder and fluid cylinder seat have been selected to special material, hold interior pressure 70MPa.
The operating principle of oil gas field without the slips fracturing packer: suppress in oil pipe while setting, fracturing fluid flows into the packer pressure guide hole from oil pipe, be pressed into stratum through fracturing sliding bush simultaneously, produce chock pressure difference at the fracturing sliding bush place, when choke pressure reaches designing requirement, cut off shear pin, promote the up compression packing element of multi-level piston, complete and set.After pressure break completes, stop pressurization in oil pipe, after pressure sheds, it is recoverable deblocking that packing element promotes descent of piston under himself elastic force effect.
The utility model has the advantages that in the tool tubular column decentralization process and can not set, promote fluid cylinder by chock pressure difference and cut off shear pin in fracturing process, make Multi-stage hydraulic cylinder compression packing element, complete and set.The instrument bearing capacity reaches 70MPa, and sealing performance is stable, and tensile strength reaches 800kN.Tool construction is simple, and latus rectum is large, and deblocking voluntarily after pressure release, can repeatedly set, but solution is honored as a queen, fixed tubular column carries out lower step operation.And can, by the combination of multiple-string packer, realize the multiple fracturing construction.
The accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to following, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structure of the present utility model top generalized section.
Fig. 2 is structure of the present utility model bottom generalized section.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
The specific embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1 and Figure 2,
A kind of oil gas field is used without the slips fracturing packer, oil gas field is used without the slips fracturing packer, by top connection 1, standby ring 2, holding screw 3, long packing element type 4, spacer ring 5, short rubber cylinder 6, upper fluid cylinder 7, sealing ring 8, in fluid cylinder seat 9, sealing ring 10, middle fluid cylinder 11, lower fluid cylinder 12, lower fluid cylinder seat 13, adjustment ring 14, set shear pin 15 and form.
There is a trapezoidal external screw thread top connection 1 lower end, and there is an oil pipe internal thread upper end; Standby ring 2 upper ends are an internal thread; Standby ring 2 is inserted in external screw thread and coordinates by top connection 1 lower end, and holding screw 3 screws in from the screwed hole of standby ring 2; It inside and outside long packing element type 4, is all disc; Spacer ring Shang Xia 5 two ends be plane; It inside and outside short rubber cylinder 6, is all disc; Short rubber cylinder 4, spacer ring 5, long packing element type 6 are nested on sealing surface by the lower end of top connection 1; Upper fluid cylinder 7 inside, upper end are sealing surface; Middle fluid cylinder seat 9 inside, upper end are a ladder type internal thread, and middle fluid cylinder seat 9 lower ends are a ladder type external screw thread, and ladder type external screw thread root has 2 circular holes; Middle fluid cylinder 11 inside, upper end are sealing surface; Sealing ring 8 is enclosed in the seal groove of fluid cylinder 7, and upper fluid cylinder 7 is inserted in from the lower end of top connection 1, and sealing ring 10 is enclosed in the seal groove of middle fluid cylinder seat 9, and the ladder type internal thread of middle fluid cylinder seat 9 is connected with the ladder type external screw thread of top connection 1; The middle fluid cylinder 11 therefrom lower end of fluid cylinder seat 9 is inserted in, and middle fluid cylinder 11 external screw threads are connected with the internal thread of upper fluid cylinder 7; Lower fluid cylinder 12 inside, upper end are sealing surface; Lower fluid cylinder seat 13 inside, upper end are a ladder type internal thread; Adjustment ring 14 inner headed faces are an internal thread; Sealing ring 8 is in the seal groove of lower fluid cylinder 12, and the lower fluid cylinder 12 therefrom lower end of fluid cylinder seat 9 is inserted in the internal thread of middle fluid cylinder 11 and is connected; Sealing ring 10 is enclosed in the seal groove of lower fluid cylinder seat 13, and the ladder type internal thread of lower fluid cylinder seat 13 is connected with the ladder type external screw thread of middle fluid cylinder seat 9; Adjustment ring 14 from the lower end of fluid cylinder seat 13 be inserted in, with the external screw thread of middle shoulder, be connected, until be adjacent to lower fluid cylinder 12, set shear pin 15 from the screwed hole of fluid cylinder 12 screw in, and be inserted in the annular groove of adjustment ring 14; Set shear pin 15 lockings on adjustment ring 14 and lower fluid cylinder 12.
Maximum outside diameter 115mm of the present utility model, overall length 1256mm, latus rectum 56mm.
While setting, packer is connected with kit, then the connected pipes G.I.H.After packer is lowered into setting position, in oil pipe, suppress, fracturing fluid flows into the packer pressure guide hole from oil pipe, be pressed into stratum through fracturing sliding bush simultaneously, produce chock pressure difference at the fracturing sliding bush place, when choke pressure reaches designing requirement, cut off shear pin, promote the up compression packing element of multi-level piston, complete and set.
During deblocking, after pressure break completes, stop pressurization in oil pipe, after pressure sheds, it is recoverable deblocking that packing element promotes descent of piston under himself elastic force effect
As mentioned above, embodiment of the present utility model is explained, but, as long as not breaking away from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation also all is included in protection domain of the present utility model.
Claims (1)
1. an oil gas field is used without the slips fracturing packer, it is characterized in that there is a trapezoidal external screw thread top connection lower end, and there is an oil pipe internal thread upper end; Standby ring upper end is an internal thread; Standby ring is inserted in external screw thread and coordinates by the top connection lower end, and holding screw screws in from the screwed hole of standby ring; It inside and outside long packing element type, is all disc; The upper and lower two ends of spacer ring are plane; It inside and outside short rubber cylinder, is all disc; Short rubber cylinder, spacer ring, long packing element type are nested on sealing surface by the lower end of top connection; Inside, upper fluid cylinder upper end is sealing surface; Inside, middle fluid cylinder seat upper end is a ladder type internal thread, and middle fluid cylinder seat lower end is a ladder type external screw thread, and ladder type external screw thread root has 2 circular holes; Inside, middle fluid cylinder upper end is sealing surface; Sealing ring is enclosed in the seal groove of fluid cylinder, and upper fluid cylinder is inserted in from the lower end of top connection, and sealing ring is enclosed in the seal groove of middle fluid cylinder seat, and the ladder type internal thread of middle fluid cylinder seat is connected with the ladder type external screw thread of top connection; The middle fluid cylinder therefrom lower end of fluid cylinder seat is inserted in, and middle fluid cylinder external screw thread is connected with the internal thread of upper fluid cylinder; Inside, lower fluid cylinder upper end is sealing surface; Inside, lower fluid cylinder seat upper end is a ladder type internal thread; The adjustment ring inner headed face is an internal thread; Sealing ring is in the seal groove of lower fluid cylinder, and the lower fluid cylinder therefrom lower end of fluid cylinder seat is inserted in the internal thread of middle fluid cylinder and is connected; Sealing ring is enclosed in the seal groove of lower fluid cylinder seat, and the ladder type internal thread of lower fluid cylinder seat is connected with the ladder type external screw thread of middle fluid cylinder seat; Adjustment ring from the lower end of fluid cylinder seat be inserted in, adjustment ring is connected with the external screw thread of middle shoulder, adjustment ring is until be adjacent to lower fluid cylinder, set shear pin from the screwed hole of fluid cylinder screw in, and be inserted in the annular groove of adjustment ring; Set the shear pin locking on adjustment ring and lower fluid cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203205038U CN203321417U (en) | 2013-06-05 | 2013-06-05 | Slip-free facture packer for oil and gas fields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203205038U CN203321417U (en) | 2013-06-05 | 2013-06-05 | Slip-free facture packer for oil and gas fields |
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| Publication Number | Publication Date |
|---|---|
| CN203321417U true CN203321417U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203205038U Expired - Fee Related CN203321417U (en) | 2013-06-05 | 2013-06-05 | Slip-free facture packer for oil and gas fields |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931024A (en) * | 2019-03-14 | 2019-06-25 | 河南福侨石油装备有限公司 | A kind of slideway compression packer |
| CN110454129A (en) * | 2019-08-08 | 2019-11-15 | 中国石油天然气股份有限公司 | A kind of gas well separate stratum fracfturing, the water integrated process pipe string of control |
-
2013
- 2013-06-05 CN CN2013203205038U patent/CN203321417U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931024A (en) * | 2019-03-14 | 2019-06-25 | 河南福侨石油装备有限公司 | A kind of slideway compression packer |
| CN110454129A (en) * | 2019-08-08 | 2019-11-15 | 中国石油天然气股份有限公司 | A kind of gas well separate stratum fracfturing, the water integrated process pipe string of control |
| CN110454129B (en) * | 2019-08-08 | 2022-03-01 | 中国石油天然气股份有限公司 | Gas well separate-layer fracturing and water control integrated process pipe column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20210605 |