Fracturing design method and device for low-permeability oil reservoir

A low-permeability, fracturing technology, applied in the field of fracturing design methods and devices for low-permeability reservoirs, can solve the problems of fast deceleration rate of fracture conductivity, short validity period of fractures, poor matching degree, etc.

Inactive Publication Date: 2020-01-17
PETROCHINA CO LTD
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Problems solved by technology

When using the existing fracturing design software to design fracturing for low-permeability reservoirs, the matching degree between the designed fracture conductivity and the formation fluid supply capacity is poor, resulting in the poor conductivity of fractures generated by fracturing. The deceleration rate is relatively fast, and the validity period of the crack is short

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  • Fracturing design method and device for low-permeability oil reservoir
  • Fracturing design method and device for low-permeability oil reservoir
  • Fracturing design method and device for low-permeability oil reservoir

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Embodiment Construction

[0083] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0084] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0085] In order to facilitate readers to quickly understand the technical solutions provided by the embodiments of the present invention, before introducing the fracturi...

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Abstract

The invention discloses a fracturing design method and device for a low-permeability oil reservoir. The method comprises the steps that geological data and logging data of a reservoir stratum and a relation chart of the zero-dimension fracture conductivity and the zero-dimension production index under different proppant index conditions are obtained; according to the geological data and the logging data of the reservoir stratum and the relation chart of the zero-dimension fracture conductivity and the zero-dimension production index under the different proppant index conditions, the range of the optimized fracture half length is determined; and fracturing design software is utilized and combined with the range of the optimized fracture half length, and an optimized fracturing design schemeis determined. The fracturing design method for the low-permeability oil reservoir is utilized to guide fracturing construction, the decreasing rate of the fracture conductivity can be effectively decreased, and the validity period of fractures is prolonged.

Description

technical field [0001] The invention relates to the technical field of oilfield exploitation, in particular to a fracturing design method and device for low-permeability oil reservoirs. Background technique [0002] Fracturing, also known as hydraulic fracturing, is to use fracturing fluid to form fractures with conductivity in the reservoir to improve the permeability of the reservoir to increase the production of oil and gas wells. [0003] Before fracturing low-permeability reservoirs, it is necessary to determine the optimal fracture half-length range based on the geological data and logging data of the block reservoir corresponding to the single well, and use the fracturing design software to combine the optimized fracture half-length. In the long range, the optimized fracturing design scheme is determined. [0004] In the process of realizing the present invention, the inventors have found that the related technologies have at least the following problems: [0005] T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B43/267E21B47/00G06Q50/02
CPCE21B43/26E21B43/267E21B47/00G06Q50/02
Inventor 龙长俊肖洁张斌李凝曾志国贾元钊吴友梅刘丙晓
Owner PETROCHINA CO LTD
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