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Saturation determination method and device based on equivalent pore cross-section index

A technology for determining the method and saturation, applied in the field of petroleum exploration, to achieve the effects of high-precision calculation of the saturation of complex reservoirs, improvement of interpretation coincidence rate, calculation accuracy and interpretation coincidence rate

Active Publication Date: 2020-08-21
PETROCHINA CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The saturation calculation accuracy and interpretation coincidence rate are greatly improved, so as to achieve the purpose of high-precision calculation of complex reservoir saturation in conventional logging series, and effectively solve the problem of quantitative evaluation of reservoir saturation

Method used

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  • Saturation determination method and device based on equivalent pore cross-section index
  • Saturation determination method and device based on equivalent pore cross-section index
  • Saturation determination method and device based on equivalent pore cross-section index

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Embodiment Construction

[0067] 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 creative efforts fall within the protection scope of the present invention.

[0068] Embodiments of the present invention provide a specific implementation of a method for determining saturation based on equivalent pore section index, see figure 1 , the method specifically includes the following content:

[0069] Step 100: Obtain the equivalent pore section index.

[0070] It can be understood that the equivalent pore sec...

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Abstract

The invention provides a saturation determination method and device based on an equivalent pore cross-section index. The method comprises the steps of acquiring the equivalent pore cross-section index; calculating a pore structure index by utilizing the equivalent pore cross-section index; and determining the water saturation of the reservoir by utilizing the porosity structure index. According tothe invention a method and device for accurately calculating the saturation degree by considering the porosity and the pore structure simultaneously in the complex reservoir can be established.

Description

technical field [0001] The present invention relates to the field of petroleum exploration, in particular to geophysical exploration technology, in particular to a method and device for calculating saturation based on equivalent pore section index. Background technique [0002] With the increasing complexity of oil and gas exploration and development objects, complex reservoirs are increasing, such as: carbonate rocks, mudstone fractured reservoirs and volcanic rock reservoirs, etc., and the difficulty of logging to evaluate reservoir saturation is increasing, resulting in The coincidence rate of logging interpretation is low, and the oil and gas discovery rate is also low. The reason is the selection of saturation model and its parameters. At present, there are many known evaluation models for reservoir saturation, the most commonly used one is Archie's formula, and a large number of Archie models and their derivative forms have been formed in the process of reservoir satur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
CPCG01V11/00Y02A90/30
Inventor 肖玉峰王学生陈鹏
Owner PETROCHINA CO LTD
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