Sandstone reservoir water layer resistivity-based stratum data processing method

A technology of formation water resistivity and resistivity, which is used in the identification of formation properties, geophysical exploration and development, comprehensive interpretation and evaluation of massive logging information, formation data processing based on the resistivity of water layers in sandstone reservoirs, and identification of groundwater layers It can solve the problem of reducing the reliability of hydrocarbon volume and other problems
CN101775983AActive Publication Date: 2010-07-14PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2010-07-14

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Abstract

The invention relates to a sandstone reservoir water layer resistivity-based stratum data processing method, which belongs to a resistivity-based reservoir attribute identification method and is suitable for identifying underground water layers. The method comprises the following steps: acquiring reservoir lithology data by using geological exploration equipment; analyzing the acquired reservoir lithology data with analysis equipment to acquire total sandstone porosity, bound water saturation, stratum water density, stratum crude oil density, movable stratum water resistivity, stratum bound water resistivity, mud and mud filtrate resistivity, true sandstone water layer resistivity, stratum fluid replacement rate and mud filtrate distribution coefficient; and finally, acquiring polluted sandstone water layer apparent resistivity, and judging whether the sandstone reservoir is the water layer by comparing the numerical relationship between the apparent resistivity and true resistivity of the sandstone reservoir depth side direction and the measured resistivity. By analyzing the pollution degree of the sandstone reservoir around a borehole, the method avoids mistakenly jetting the water layer when the hydrocarbon reservoir is put into development and perforation, reduces inaccurate judgment for abnormality, and reduces the development cost.
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Description

technical field

[0001] The invention relates to a geophysical exploration and development method, in particular to a stratum data processing method based on the resistivity of a sandstone reservoir water layer, which belongs to a resistivity-based stratum attribute identification method, and is especially suitable for identifying groundwater layers. More specifically, the invention relates to the category of comprehensive interpretation and evaluation of massive logging information, and to the field of data acquisition, testing and analysis of formation lithology parameters. Background technique

[0002] Rapid and accurate evaluation of oil and water layers has always been a technical problem for oilfield exploration and development scientists to solve. At present, there are five main methods for evaluating oil and water reservoirs:

[0003] One is coring method: through direct observation of drilling coring (system coring, see display coring and wellbore coring), the oil-b...

Claims

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