Method for evaluating heterogeneous characteristics of reservoir continuously and quantitatively by applying resistivity imaging logging data

A technology of resistivity imaging and well logging data, which is applied in the field of geological exploration data processing, can solve problems such as inability to fully reflect reservoir heterogeneity and single parameters

Inactive Publication Date: 2015-09-16
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the technical problem that the application of conventional logging data to evaluate reservoir heterogeneity has a single parameter and cannot fully reflect reservoir heterogeneity, and propos

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  • Method for evaluating heterogeneous characteristics of reservoir continuously and quantitatively by applying resistivity imaging logging data
  • Method for evaluating heterogeneous characteristics of reservoir continuously and quantitatively by applying resistivity imaging logging data
  • Method for evaluating heterogeneous characteristics of reservoir continuously and quantitatively by applying resistivity imaging logging data

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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0020] Refer to attached figure 1 , the general scheme of the present invention is

[0021] First, the formation factor formula is used to convert the resistivity imaging data into porosity, and then the porosity distribution along the wellbore at each depth point is counted to form a histogram of heterogeneous feature distribution. Finally, the reaction reservoir is extracted by analyzing the histogram features. Quantitative parameters for layer heterogeneity characteristics.

[0022] Specific steps are as follows:

[0023] Step (1) Imaging resistivity data conversion

[0024] The formation resistivity information obtained from the resistivity imaging logging data is substituted into the formation factor formula, and under the constraints of conventional porosity logging data, the resistivity data distributed along the wellbore at each depth point is...

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Abstract

The invention discloses a method for evaluating heterogeneous characteristics of a reservoir continuously and quantitatively by applying resistivity imaging logging data. The resistivity imaging logging data of each depth point distributed along a well circumference is converted to porosity through a formation factor formula; a heterogeneous characteristic spectrum can be obtained by studying the distribution of different depth porosity data; morphological characteristics of the heterogeneous characteristic spectrum are analyzed; heterogeneous characteristic parameters, such as a mean value, a homogeneity coefficient, a variance, a peak value, a quality factor and the like, are calculated; and researches, such as lithology identification, effectiveness classification of the reservoir, remaining oil distribution and the like, can be carried out. The method provided in the invention improves the ability of the logging data to evaluate the heterogeneous characteristics of the reservoir; and a great number of parameters capable of reflecting the heterogeneous characteristics of the stratum are obtained. Compared with the method of purely using the conventional logging data to evaluate the heterogeneous characteristics of the reservoir, the new method has incomparable advantage, the method has higher promotional value and social benefit.

Description

technical field [0001] The invention relates to a method for continuously and quantitatively evaluating reservoir heterogeneity characteristics using resistivity imaging logging data in the field of geological exploration data processing methods. Background technique [0002] The research on reservoir heterogeneity began in the 1970s and 1980s, aiming at improving the development effect and predicting the distribution of remaining oil. The influence has gradually attracted people's attention. Reservoir heterogeneity means that the reservoir is affected by the depositional environment, diagenesis and tectonic process during the formation process, and there are uneven changes in spatial distribution and various internal attributes. This change also affects the underground oil, gas and water. The main factor of the flow characteristics. The traditional representation of reservoir heterogeneity is generally characterized by a single parameter, which is reflected by parameters ...

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Application Information

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IPC IPC(8): E21B49/00
Inventor 张德峰刘伟刘海河潘敏刘云兰
Owner CHINA PETROCHEMICAL CORP
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