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A method for temporary plugging in artificial fractures of shale oil fracturing

A technology for artificial fractures and shale oil, which is applied in earthwork drilling, wellbore/well components, production fluids, etc., can solve the problems of small fracturing volume and difficulty in artificial fractures, and achieve the effect of fracturing

Active Publication Date: 2022-07-01
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The problem to be solved by the present invention is that the volume of fracturing reconstruction is small and artificial fracture reconstruction is difficult. The purpose of this invention is to provide a temporary plugging method for shale oil fracturing artificial fractures, which solves the problem of artificial fracture reconstruction

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  • A method for temporary plugging in artificial fractures of shale oil fracturing
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  • A method for temporary plugging in artificial fractures of shale oil fracturing

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Embodiment Construction

[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related content, but not to limit the present invention.

[0043] In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0044] The embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0045] A process method for temporary plugging of artificial fractures 2 in shale oil fracturing, comprising the following steps:

[0046] S1. Determine the heig...

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Abstract

The invention discloses a method for temporary plugging in artificial fractures of shale oil fracturing, comprising the following steps: determining the height of artificial fractures; determining the thickness of temporary plugging in artificial fractures; determining the amount of temporary plugging agent in artificial fractures; Temporary plugging fluid composed of agent, active water and proppant is injected at a certain construction displacement to form temporary bridge plugging in artificial fractures; the pressure of temporary bridge plugging is controlled to make the reservoir form turning fractures. The invention utilizes the logging data of the shale oil reservoir, and sets a temporary plugging bridge in the fracturing (artificial fracture) through the temporary plugging process, so that turning fractures are formed in the artificial fractures, and the shale oil storage is realized. Fracturing of layers.

Description

technical field [0001] The invention relates to the field of shale oil exploration and development, in particular to a temporary plugging method in artificial fractures of shale oil fracturing. Background technique [0002] In recent years, my country has intensified the exploration of shale oil reservoirs, and many oil and gas fields have made exploration breakthroughs, but the development is difficult. Compared with the development of conventional oil and gas fields, shale oil reservoirs have poor physical properties, small fracturing volume, low production, and difficulty in artificial fracture stimulation. SUMMARY OF THE INVENTION [0003] The problem to be solved by the present invention is that the volume of fracturing reformation is small and artificial fracture reformation is difficult. [0004] A method for temporary plugging in artificial fractures of shale oil fracturing, comprising the following steps: [0005] S1. Determine the height of artificial cracks; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/13E21B43/26E21B49/00
CPCE21B33/13E21B43/261E21B49/00
Inventor 周长林马辉运曾冀陈伟华唐波涛叶颉枭李金穗颜洁唐鑫苑杨林
Owner PETROCHINA CO LTD
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