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Apparatus for multi-directional pressure-controlled spray seal pressure and pipe string containing same

A pressure control and nozzle technology, applied in the directions of sealing/isolation, production fluids, wellbore/well components, etc., to achieve the effect of reducing operating procedures, simplifying operating procedures, and reducing operating costs

Active Publication Date: 2018-06-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the above method, although the stimulation of the reservoir can be completed, it is necessary to run multiple strings to complete the perforation and sand fracturing

Method used

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  • Apparatus for multi-directional pressure-controlled spray seal pressure and pipe string containing same
  • Apparatus for multi-directional pressure-controlled spray seal pressure and pipe string containing same
  • Apparatus for multi-directional pressure-controlled spray seal pressure and pipe string containing same

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Experimental program
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Effect test

Embodiment Construction

[0041] The present invention will be further described below in conjunction with accompanying drawing.

[0042] figure 1 A device 100 for multi-directional pressure controlled spray seal pressure according to an embodiment of the present invention is shown. Such as figure 1 As shown, the device 100 includes an upper joint 1, a nozzle sleeve 2, a central rod 3, a packer 4, a lower joint 5, an inner cylinder 6, a nozzle 7 and an opening tool 40 (in figure 2 shown in ). Wherein, the upper joint 1 is configured in a cylindrical shape, and is used to connect with the tubing 8 to send the device 100 into the reservoir. The nozzle cover 2 is arranged at the lower end of the upper joint 1 and is configured in a cylindrical shape. At the same time, a flow hole 9 communicating with the inside and the outside is provided on the peripheral wall of the nozzle cover 2 . The central rod 3 is arranged on the lower end of the nozzle cover 2 and is cylindrical. The packer 4 is arranged o...

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PUM

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Abstract

The invention provides a device used for multidirectional pressure control type spraying-sealing fracturing and a tubular column comprising the same. The device comprises a barrel-shaped upper connector, a nozzle sleeve, a central rod, a packer, a lower connector, an inner barrel, nozzles and an opening tool, wherein the nozzle sleeve is provided with circulating holes and pressure transmission holes, and the nozzles are arranged on the circulating holes; the inner barrel is arranged on the inner wall of the nozzle sleeve to seal the nozzles and the pressure transmission holes. After the opening tool is thrown in, under the action of pressure liquid, the inner barrel moves downwards to expose the nozzles and the pressure transmission holes, so that the packer is set, and then perforation can be carried out through the nozzles. The nozzles can fall off from the circulating holes so that subsequent fracturing operation can be carried out. By means of the device, the operation cost can be lowered, and the modification effect is improved.

Description

technical field [0001] The invention relates to the technical fields of oil and gas well completion and reservoir reconstruction, and in particular to a device for multi-directional pressure-controlled spray sealing pressure and a pipe string containing the same. Background technique [0002] With the advancement of exploration and development of unconventional oil and gas reservoirs, staged well completion fracturing technology, as the main production stimulation measure for unconventional oil and gas resources exploitation, is also developing rapidly. Completion staged fracturing technology can be used to stimulate reservoirs in a targeted manner, expand the oil drainage area of ​​oil and gas production layers, and improve oil and gas recovery. [0003] In the prior art, multi-stage and staged reservoir stimulation is usually carried out by perforating first and then fracturing. That is, in the process of reservoir stimulation, the perforating gun is first lowered to perf...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/114E21B33/126E21B33/127
CPCE21B33/1208E21B33/126E21B33/127E21B43/114E21B43/26
Inventor 甘振维侯治民胡顺渠王磊王强赵祚培赵伟滕汶江陈晨李腾飞周怡君
Owner CHINA PETROLEUM & CHEM CORP
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