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A Porosity Measurement Method for Source-Reservoir Coexisting Formation

A measurement method and porosity technology, applied in the field of comprehensive processing and application of geophysical data, can solve the problems of lack, low accuracy, and troubled formation depth exploration, and achieve the effect of accurate homing and improvement of measurement accuracy.

Inactive Publication Date: 2017-08-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, there are huge challenges in logging interpretation of source-reservoir co-occurrence formations, especially in the measurement of parameters such as porosity. Conventional interpretation theories and models are no longer suitable for such formations, and there is still a lack of corresponding mechanism research at home and abroad. and evaluation methods, the accuracy of porosity calculation is low, causing certain troubles in the depth exploration of this type of strata

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  • A Porosity Measurement Method for Source-Reservoir Coexisting Formation
  • A Porosity Measurement Method for Source-Reservoir Coexisting Formation
  • A Porosity Measurement Method for Source-Reservoir Coexisting Formation

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Embodiment Construction

[0034] The logging response of source-reservoir co-occurrence formations is very complex, which is closely related to rock composition and content, source rock content, porosity and filling materials, which directly leads to the commonly used reservoir porosity modeling methods such as volume model and optimization. Ineffective, the obtained results are in poor agreement with the core analysis data, which reduces the accuracy of reservoir evaluation. The invention proposes a porosity measurement method of source-reservoir coexistence formation based on source control theory, which effectively solves this problem.

[0035] The main process of the inventive method is as figure 1 shown, including:

[0036] 1. Accurate homing of core depth based on petrophysical and nuclear magnetic resonance logging;

[0037] 2. Multi-disciplinary, multi-scale data synthesis organic carbon content (TOC) modeling method;

[0038] 3. Optimization scheme of porosity sensitive parameters based on ...

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Abstract

The invention discloses a method for measuring the porosity of source-reservoir symbiotic formations. The main process includes: accurate homing of core depth based on petrophysical properties and nuclear magnetic resonance logging; multidisciplinary and multiscale data comprehensive organic carbon content ( TOC) modeling method; optimization scheme of porosity sensitive parameters based on source rock control; and fine porosity modeling method based on organic carbon content (TOC) classification. The present invention considers the influence of source rocks on well logging response, first calculates the organic carbon content, then classifies the source-reservoir symbiotic strata according to the amount of organic carbon content, and then uses different calculation formulas to calculate the pores according to the divided levels The porosity obtained by this method is very accurate, and the average absolute error, average relative error, and correlation coefficient have reached the standards and specifications for tight oil logging evaluation.

Description

technical field [0001] The invention belongs to the field of comprehensive processing and application of geophysical data, and in particular relates to a porosity measurement method for source-reservoir symbiotic formations based on the properties of source rocks and reservoirs Background technique [0002] With the sharp increase of human demand for energy and the sharp decline of world oil and gas resources, the exploration and development of source-reservoir symbiotic formations has gradually attracted the attention of countries all over the world. However, there are huge challenges in logging interpretation of source-reservoir co-occurrence formations, specifically in the measurement of parameters such as porosity, because conventional interpretation theories and models are no longer suitable for this formation, and there is still a lack of corresponding mechanism research at home and abroad And the evaluation method makes the accuracy of porosity calculation low, causin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 葛新民范宜仁范卓颖邓少贵谭宝海吴飞徐拥军
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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