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A method for predicting compressibility index of bedding shale formation

A prediction method and shale technology, applied in earthwork drilling, wellbore/well components, production fluids, etc., can solve the problems of ignoring the characteristics of shale bedding structure, etc., and achieve strong practicability and comprehensive consideration of factors

Active Publication Date: 2022-03-01
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0004] The main defect of the existing shale compressibility index prediction method is that it ignores the characteristics of shale bedding structure

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  • A method for predicting compressibility index of bedding shale formation
  • A method for predicting compressibility index of bedding shale formation
  • A method for predicting compressibility index of bedding shale formation

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0052] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall with...

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Abstract

The present invention relates to a method for predicting the compressibility index of bedding shale formations, comprising: obtaining multiple influencing factors of shale formations, the multiple influencing factors including shale bedding development characteristic parameters, bedding mechanical parameters, matrix mechanical parameters and Shale formation stress state parameters; each of the multiple influencing factors is normalized to obtain a normalized value of each of the influencing factors; based on a numerical simulation method and the multiple influencing factors , obtaining the weight coefficient of each of the multiple influencing factors; based on a preset formula, the normalized value of each of the influencing factors, and the weighting coefficient of each of the influencing factors, the shale formation is obtained compressibility index value. The invention introduces the shale matrix and bedding characteristics into the compressibility evaluation, and establishes a compressibility evaluation method suitable for shale formations.

Description

technical field [0001] The invention relates to the technical field of shale gas exploration and development, in particular to a method for predicting the compressibility index of stratified shale formations. Background technique [0002] my country is rich in shale gas resources. In order to meet my country's strong demand for natural gas, increasing the exploration and development of shale gas is an important task for my country's petroleum industry. Hydraulic fracturing technology is currently a necessary means for shale gas, and the effect of fracturing is directly related to the production of shale gas. Formation fracability evaluation method is an important part of hydraulic fracturing technology and the basis of the whole hydraulic fracturing process. The fracability of a shale formation means that the formation can be opened by hydraulic fracturing techniques to form a network of fractures that can effectively stimulate production. Obviously, the better the fractur...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B43/26
CPCE21B49/00E21B43/26
Inventor 丁乙刘向君梁利喜余小龙刘叶轩周鑫
Owner SOUTHWEST PETROLEUM UNIV