Sandstone Formation Logging Evaluation Method

A technology for sandstone formations and formations, which is applied in the field of sandstone formation logging evaluation, can solve problems such as inability to reflect oil and gas storage conditions, and achieve accurate, accurate interpretation and prediction of water saturation

Active Publication Date: 2020-03-10
PETROCHINA CO LTD
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Problems solved by technology

[0004] Based on the above technical problems, the present invention provides a sandstone formation logging evaluation method to solve the technical problem that the sandstone formation logging evaluation method in the prior art cannot reflect the real oil and gas storage conditions

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  • Sandstone Formation Logging Evaluation Method
  • Sandstone Formation Logging Evaluation Method
  • Sandstone Formation Logging Evaluation Method

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Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention 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 of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] figure 1 It is a flow chart of a sandstone formation logging evaluation method provided by an embodiment of the present invention. Such as figure 1 As shown, the sandstone formation logging evaluation method of the present embodiment may include the following steps:

[0043] S101: measuring the actual formation resistivity, formatio...

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Abstract

The invention provides a well logging evaluation method for a sandstone stratum. The well logging evaluation method comprises the steps that the actual stratum resistance rate, the stratum dip angle and the anisotropy coefficient of the sandstone stratum are measured; the correction stratum resistance rate is determined according to the actual stratum resistance rate, the stratum dip angle, the anisotropy coefficient of the sandstone stratum, the first correction parameter and the second correction parameter; and the water saturation of the sandstone stratum is determined according to the correction stratum resistance rate, so that well logging evaluation is conducted on the sandstone stratum.

Description

technical field [0001] The invention relates to the field of oil and gas exploration, in particular to a logging evaluation method for sandstone formations. Background technique [0002] In the field of petroleum logging, it is generally considered that the sandstone and mudstone formations are horizontally layered, and the resistivity logging measures the horizontal resistivity. Due to the existence of formation anisotropy, when encountering high and steep formations or well deviations, the measured The resistivity of the reservoir is often different from the horizontal resistivity of the actual formation, so the calculation of water saturation using the resistivity will cause errors, which will cause errors in the interpretation of oil and gas layers. [0003] The research on the resistivity logging response characteristics of anisotropic formations in the prior art can be traced back to the work of Kunz et al. in 1958. Analytical solution of resistivity logging and its r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
Inventor 肖承文章成广田军陈伟中唐军杨海军信毅周磊韩闯郑新华范文同赵新建王华伟
Owner PETROCHINA CO LTD
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