Continuous oil tube fracturing and downhole throttling producing integrated process tubular pile and method thereof

A process string and tubing technology, applied in the field of coiled tubing fracturing and downhole throttling production integrated process string, can solve the problem that gas wells cannot be downhole throttling, improve liquid carrying capacity, reduce input cost, sit reliable effect

Pending Publication Date: 2020-09-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a coiled tubing fracturing and downhole throttling production integrated process string and its method, which can overcome the shortcoming that downhole throttling cannot be performed in the early stage of gas wells, can greatly reduce the early cost of gas wells, and improve early wellbore gas flow carrying capacity. Liquid capacity, to achieve the effect of increasing production

Method used

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  • Continuous oil tube fracturing and downhole throttling producing integrated process tubular pile and method thereof

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Embodiment 1

[0031] Such as figure 1 As shown, a coiled tubing fracturing and downhole throttling production integrated process string of the present invention includes a coiled tubing 1, a connector 2, a shearing handle 3, a casing collar positioner 4, a hydraulic injector 5, Packer 6, sliding sleeve seat 7, hydraulic delivery tool 8 and downhole restrictor 9. The coiled tubing 1 is connected to the hydraulic pressure drop 3 through the connector 2, the casing collar positioner 4 is connected to the lower end of the shear line 3, the casing collar positioner 4 is connected to the hydraulic jet 5, and the hydraulic jet 5 There is an inner sliding sleeve to block the tunnel, and it can only work normally after the ball is started. The lower end of the hydraulic jet 5 is connected to the packer 6, the lower end of the packer is connected to the sliding sleeve seat 7, and the lower end of the sliding sleeve seat 7 is connected to the hydraulic delivery tool. 8. The lower end of the hydraulic...

Embodiment 2

[0041] refer to figure 1 Embodiments of the present invention are further described:

[0042]An integrated process string of coiled tubing fracturing and downhole throttling production, the process string includes coiled tubing 1, connector 2, shearing handle 3, casing collar positioner 4, hydraulic injector 5, seal Spacer 6, sliding sleeve seat 7, hydraulic delivery tool 8 and downhole restrictor 9. The coiled tubing 1 is connected to the hydraulic pressure drop 3 through the connector 2, the casing collar positioner 4 is connected to the lower end of the shear line 3, the casing collar positioner 4 is connected to the hydraulic jet 5, and the hydraulic jet 5 There is an inner sliding sleeve to block the tunnel, and it can only work normally after the ball is started. The lower end of the hydraulic jet 5 is connected to the K344 packer 6, the lower end of the K344 packer is connected to the sliding sleeve seat 7, and the lower end of the sliding sleeve seat 7 is connected to...

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Abstract

The invention discloses a continuous oil tube fracturing and downhole throttling producing integrated process tubular pile. The continuous oil tube fracturing and downhole throttling producing integrated process tubular pile comprises a continuous oil tube, a shearing releaser, a sleeve coupling positioner, a hydraulic ejector, a packer, a slide sleeve base, a hydraulic adding tool and a downholethrottling machine, wherein the continuous oil tube is connected to a hydraulic releaser through a connector; the lower end of the shearing releaser is connected to the sleeve coupling positioner; thelower end of the sleeve coupling positioner is connected to the hydraulic ejector; the lower end of the hydraulic ejector is connected to the packer; the lower end of the packer is connected to the slide sleeve base; the lower end of the slide sleeve base is connected to the hydraulic adding tool; and the lower end of the hydraulic adding tool is connected to the downhole throttling machine. Thecontinuous oil tube fracturing and downhole throttling producing integrated process tubular pile overcomes the defect that a gas well cannot perform downhole throttling at an early stage, gas well early-stage cost can be greatly reduced, liquid carrying ability of gas flow in a well shaft at the early stage is improved, and the yield increase effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of fracturing in oil and gas fields, and in particular relates to a continuous tubing fracturing and downhole throttling production integrated process string and method thereof, which are suitable for use in directional wells and vertical wells for casing completion. Background technique [0002] The downhole throttling technology relies on the downhole throttle to realize wellbore throttling and pressure reduction, and utilizes the technological principle of geothermal heating. This technology has been fully promoted and applied in the Sulige Gas Field. Practice has proved that this technology has the advantages of reducing costs, effectively preventing hydrate formation, and improving the liquid-carrying production capacity of gas wells. [0003] The slip type downhole choke widely used at present is to send the choke into the design position in the well through the well test wire, rely on the slips to loc...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/114E21B23/00E21B43/12
CPCE21B43/26E21B43/114E21B23/00E21B43/12
Inventor 姜勇刘汉斌张宏福刘锐马得华杨旭东张安康张家富仵海龙任发俊
Owner PETROCHINA CO LTD
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