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Five-dimension lithologic character judgment and recognition method based on conventional logging data

A conventional logging data, five-dimensional technology, applied in the field of five-dimensional lithology identification based on conventional logging data, can solve problems such as differences in logging response values

Inactive Publication Date: 2016-10-05
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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Problems solved by technology

At present, the logging curves used to evaluate lithology are all conventional data, and there are certain differences in various logging response values ​​among different lithologies. well response difference

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  • Five-dimension lithologic character judgment and recognition method based on conventional logging data
  • Five-dimension lithologic character judgment and recognition method based on conventional logging data
  • Five-dimension lithologic character judgment and recognition method based on conventional logging data

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Embodiment Construction

[0018] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0019] Such as figure 1 as shown, figure 1 It is a flow chart of the five-dimensional lithology identification method based on conventional logging data of the present invention.

[0020] In step 101, well log curves are preprocessed. Standardize and normalize all logs. The process goes to step 102.

[0021] In step 102, standard layer data is extracted. On the basis of cored wells, the lithology was accurately named based on the thin section analysis results, and 5 curves sensitive to lithology were selected (deep resistivity logging value, natural gamma ray logging value, neutron logging value, density logging value, etc.) well value, acoustic time difference logging value) as the discriminant parameters, and its logging response values ​​...

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Abstract

The present invention provides a five-dimensional lithology identification method based on conventional logging data. The five-dimensional lithology identification method based on conventional logging data includes: step 1, selecting multiple logging curves sensitive to lithology as identification parameters , extract its logging response values ​​for various lithologies; step 2, establish standard charts for different lithologies according to the data extracted in step 1; and step 3, extract the discriminant parameters of the samples to be predicted, according to the establishment of The standard plates of different lithologies are used for sample prediction. This method establishes a series of practical and effective lithology identification charts based on the five-dimensional analysis of conventional logging, which can assist the lithology identification of volcanic rocks in oil fields, and provide guidance and reference for lithology identification of other complex reservoirs.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a five-dimensional lithology identification method based on conventional logging data. Background technique [0002] Lithology identification has always been an important content of oil and gas geological exploration research. Taking the lithology identification of volcanic rocks as an example, the research on logging evaluation of volcanic rock reservoirs started earlier in foreign countries, but the research direction mostly focused on the qualitative description of rock physical mechanism and logging response of different lithologies. Since the 1970s, geologists began to systematically interpret oil and gas exploration in volcanic rock distribution areas. At present, conventional logging combined with ECS logging to describe the chemical composition of igneous rocks, and micro-resistivity scanning imaging logging combined with conventional logging have been formed...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
Inventor 刘雅利林红梅刘军锷傅爱兵王敏崔殿朱家俊张波关丽方丽苏宪锋李英英孟涛苏国英庄嘉翠周爱华张莉石泉清位江红翟晓英周维博黄铮
Owner CHINA PETROLEUM & CHEM CORP
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