CN210195725U - Fracturing string - Google Patents
Fracturing string Download PDFInfo
- Publication number
- CN210195725U CN210195725U CN201920927215.6U CN201920927215U CN210195725U CN 210195725 U CN210195725 U CN 210195725U CN 201920927215 U CN201920927215 U CN 201920927215U CN 210195725 U CN210195725 U CN 210195725U
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- China
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- spray gun
- packer
- hydraulic anchor
- fixed spray
- centralizer
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Abstract
The utility model discloses a fracturing string, including ball seat, hydraulic anchor, packer, fixed spray gun, centralizer, safety joint, ball seat erection joint is at the lower extreme of hydraulic anchor, the hydraulic anchor is installed at the packer lower extreme, the lower extreme of the fixed spray gun of packer installation, fixed spray gun upper end is connected with the centralizer, the centralizer upper end is connected with the safety joint through oil pipe, the upper end of safety joint is connected with the oil pipe that links to each other with ground high-pressure pump. The utility model is not easy to be clamped, the structure runs stably, and the up-and-down movement is smooth; can block outside sand grain and get into inside, can prevent to block up.
Description
Technical Field
The utility model relates to a coal bed gas exploitation technical field, concretely relates to fracturing string that horizontal well fracturing of coal bed gas exploitation was used.
Background
Fracturing is a method for forming cracks in oil and gas layers by utilizing the hydraulic action in the oil extraction or gas production process, and is also called hydraulic fracturing; fracturing is the artificial fracturing of the formation to create fractures, improve the flow environment of oil or gas underground, increase the oil or gas production rate, and play an important role in improving the flow conditions of oil or gas wells, slowing down the intervals, and improving the conditions of oil or gas reservoirs.
In the coal bed gas exploitation process, hydraulic fracturing is generally adopted, in the process, a fracturing pipe column is required to be used for carrying out staged fracturing on a stratum, in the staged fracturing process, the existing fracturing pipe column is easy to clamp with a shaft, and an oil pipe is difficult to drag.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving foretell not enough, provide a fracturing string.
In order to achieve the above object, the technical solution of the present invention is: the utility model provides a fracturing string, includes ball seat, hydraulic anchor, packer, fixed spray gun, centralizer, safety joint, ball seat erection joint is at the lower extreme of hydraulic anchor, the hydraulic anchor is installed at the packer lower extreme, the lower extreme of the fixed spray gun of packer installation, fixed spray gun upper end is connected with the centralizer, there is the safety joint centralizer upper end through oil pipe connection, the upper end of safety joint is connected with the oil pipe that links to each other with ground high-pressure pump.
Furthermore, the ball seat adopts a guide ball seat with the outer diameter of phi 110mm, the hydraulic anchor is a sand-proof hydraulic anchor, the packer adopts a K344 packer with the outer diameter of phi 116mm, the outer diameter of the fixed spray gun is phi 94mm, the aperture of the injection hole on the fixed spray gun is phi 6mm, the holes are annularly arranged on the side wall of the fixed spray gun in a double-row mode at an included angle of 120 degrees, and the outer diameter of the centralizer is phi 116 mm.
Further, the hydraulic anchor includes cylindric body, the body is hollow structure, the lateral wall border of body is equipped with a plurality of mounting holes, the outside of mounting hole is uncovered, the inboard of mounting hole is linked together through many slots and the inside cavity of body, install the jack catch in the mounting hole, it is spacing in the mounting hole through the baffle outward to be equipped with notch and notch on the jack catch, the outside and the body outside of baffle flush, be equipped with compression spring between jack catch and the baffle, the jack catch can pop out the anchoring outside on the wall of a well under the pressure effect of the liquid medium in the body to the outside.
Furthermore, a circle of groove is formed in the side wall of the clamping jaw, a sealing ring is arranged in the groove, the outer side of the sealing ring is in contact with the hole wall of the mounting hole, and the clamping jaw is in sealing fit with the mounting hole.
Furthermore, the outer side of the clamping jaw is provided with a serrated clamping tooth which is convenient to engage.
The utility model is not easy to be clamped in the using process, the structure runs stably, and the up-and-down movement is smooth; can block outside sand grain and get into inside, can prevent to block up.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the hydraulic anchor of the present invention.
Fig. 3 is a schematic view of the claw structure of the present invention.
In the figure: 1-ball seat, 2-hydraulic anchor, 3-packer, 4-fixed spray gun, 5-centralizer, 6-safety joint, 7-oil pipe, 21-pipe body, 22-claw, 23-baffle, 24-compression spring, 25-sealing ring, 211-mounting hole, 221-notch, 222-groove and 223-latch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the fracturing string comprises a ball seat 1, a hydraulic anchor 2, a packer 3, a fixed spray gun 4, a centralizer 5 and a safety joint 6, wherein the ball seat 1 is installed and connected at the lower end of the hydraulic anchor 2, the hydraulic anchor 2 is installed at the lower end of the packer 3, the packer 3 is installed at the lower end of the fixed spray gun 4, the centralizer 5 is connected to the upper end of the fixed spray gun 4, the upper end of the centralizer 5 is connected with the safety joint 6 through an oil pipe, and the upper end of the safety joint 6 is connected with an oil pipe 7 connected with a ground high-pressure pump.
Specifically, the ball seat 1 adopts a guide ball seat with the outer diameter of phi 110mm, the hydraulic anchor 2 is a sand-proof hydraulic anchor, the packer 3 adopts a K344 packer with the outer diameter of phi 116mm, the outer diameter of the fixed spray gun 4 is phi 94mm, the aperture of the injection hole in the fixed spray gun 4 is phi 6mm, the holes are annularly arranged on the side wall of the fixed spray gun 4 in a double-row mode at an included angle of 120 degrees, and the outer diameter of the centralizer 5 is phi 116 mm.
Specifically, the hydraulic anchor 2 includes cylindric body 21, body 21 is hollow structure, the lateral wall periphery of body 21 is equipped with a plurality of mounting holes 211, the outside of mounting hole 211 is uncovered, the inboard of mounting hole 211 is linked together through many slots and the inside cavity of body 21, install jack catch 22 in the mounting hole 211, it is spacing in mounting hole 211 to be equipped with notch 221 and notch 221 outward through baffle 23 on the jack catch 22, the outside and the body 21 outside of baffle 23 flush, be equipped with compression spring 24 between jack catch 22 and the baffle 23, jack catch 22 can pop out the anchoring outside on the wall of a well under the pressure effect of the liquid medium in the body 21 to the outside.
Specifically, a circle of groove 222 is formed in the side wall of the clamping jaw 22, a sealing ring 25 is arranged in the groove 222, the outer side of the sealing ring 25 is in contact with the wall of the mounting hole 211, and the clamping jaw 22 is in sealing fit with the mounting hole 211.
Preferably, the outer side of the claw 22 is provided with a serrated latch 223 for facilitating engagement.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A fracturing string, comprising: including ball seat, hydraulic anchor, packer, fixed spray gun, centralizer, safety joint, ball seat erection joint is at the lower extreme of hydraulic anchor, the hydraulic anchor is installed at the packer lower extreme, the lower extreme of the fixed spray gun of packer installation, fixed spray gun upper end is connected with the centralizer, there is the safety joint centralizer upper end through oil pipe connection, the upper end of safety joint is connected with the oil pipe that links to each other with ground high-pressure pump.
2. A fracturing string as claimed in claim 1, wherein: the hydraulic anchor is a sand-proof hydraulic anchor, the packer is a K344 packer with the outer diameter of phi 116mm, the outer diameter of the fixed spray gun is phi 94mm, the aperture of an injection hole on the fixed spray gun is phi 6mm, the holes are annularly arranged on the side wall of the fixed spray gun in a double-row mode at an included angle of 120 degrees, and the outer diameter of the centralizer is phi 116 mm.
3. A fracturing string as claimed in claim 1, wherein: the hydraulic anchor comprises a cylindrical pipe body, the pipe body is of a hollow structure, a plurality of mounting holes are formed in the periphery of the side wall of the pipe body, the outer side of each mounting hole is open, the inner side of each mounting hole is communicated with the inner cavity of the pipe body through a plurality of slots, clamping jaws are mounted in the mounting holes, notches are formed in the clamping jaws and are limited in the mounting holes through baffles, the outer sides of the baffles flush with the outer side of the pipe body, compression springs are arranged between the clamping jaws and the baffles, and the clamping jaws can be ejected outwards under the pressure action of liquid media in the pipe body and anchored on the outer well wall.
4. A fracturing string as claimed in claim 3, wherein: the side wall of the clamping jaw is provided with a circle of groove, a sealing ring is arranged in the groove, the outer side of the sealing ring is in contact with the hole wall of the mounting hole, and the clamping jaw is in sealing fit with the mounting hole.
5. A fracturing string as claimed in claim 3, wherein: the outside of jack catch is equipped with the cockscomb structure's of the interlock of being convenient for latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927215.6U CN210195725U (en) | 2019-06-19 | 2019-06-19 | Fracturing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927215.6U CN210195725U (en) | 2019-06-19 | 2019-06-19 | Fracturing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210195725U true CN210195725U (en) | 2020-03-27 |
Family
ID=69871893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920927215.6U Active CN210195725U (en) | 2019-06-19 | 2019-06-19 | Fracturing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210195725U (en) |
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2019
- 2019-06-19 CN CN201920927215.6U patent/CN210195725U/en active Active
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