Stratum matrix resistivity determination method and device

A technology of resistivity and resistivity imaging, which is applied in the field of oil and gas exploration, can solve the problems of poor accuracy of formation matrix resistivity and achieve accurate determination

Active Publication Date: 2018-03-16
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiments of the present application provide a method and device for determining the resistivity of formation matrix, so as to solve the technical problem of poor accuracy o...

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  • Stratum matrix resistivity determination method and device
  • Stratum matrix resistivity determination method and device

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[0050] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0051]Considering that the existing determination methods of formation matrix resistivity are either based on the experimental measurement of core resistivity, and then use the core measurement data to determine formation matrix resistivity; or use conventional logging data to calculate matrix porosity and matrix pore oil and gas saturatio...

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Abstract

The embodiments of the present invention provide a stratum matrix resistivity determination method and device. The method includes the following steps that: the electrical imaging data and first welllogging data of a stratum in a target area are acquired; a first resistivity imaging image is determined according to the electrical imaging data and the first well logging data; interpolation processing is performed on the first resistivity imaging image to obtain a second resistivity imaging image; and the stratum matrix resistivity curve of the target area is determined according to the secondresistivity imaging image. According to the stratum matrix resistivity determination method and device of the embodiments of the present invention, on the basis of the features of the imaging data, the imaging data and the first logging data are combined, so that the first resistivity imaging image can be determined; by means of interpolation processing, the first resistivity imaging image is interpolated and repaired, so that the second resistivity image can be obtained; and therefore, the stratum matrix resistivity curve can be obtained. With the stratum matrix resistivity determination method and device adopted, the technical problem of the poor accuracy of stratum matrix resistivity determined by an existing method can be solved.

Description

technical field [0001] The present application relates to the technical field of oil and gas exploration, in particular to a method and device for determining the resistivity of a formation matrix. Background technique [0002] In the process of oil and gas exploration, it is often necessary to determine the matrix resistivity of the formation in the target area first, and then perform specific evaluation of the reservoir in the target area according to the matrix resistivity. Wherein, the above-mentioned matrix resistivity may refer to the resistivity of the matrix part of the formation that is not affected by secondary pores such as fractures and holes. The above-mentioned formation matrix resistivity is usually one of the important parameters of fracture-vuggy reservoir logging evaluation, which will affect the accuracy of calculation results of reservoir fracture parameters and oil and gas saturation. In addition, since matrix resistivity can largely eliminate the influ...

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Application Information

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IPC IPC(8): G01V3/38G01V3/20G01V11/00
CPCG01V3/20G01V3/38G01V11/00
Inventor 冯周李宁武宏亮冯庆付王克文刘鹏李雨生
Owner PETROCHINA CO LTD
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