Porosity measuring method for resource storage commensalism type stratums

A measurement method and porosity technology, which is applied in the field of comprehensive processing and application of geophysical data, can solve problems such as low precision, lack, and problems in deep exploration of strata, and achieve the effect of improving measurement accuracy and accurate homing

Inactive Publication Date: 2015-06-24
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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  • Porosity measuring method for resource storage commensalism type stratums
  • Porosity measuring method for resource storage commensalism type stratums
  • Porosity measuring method for resource storage commensalism type stratums

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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 porosity measuring method for resource storage commensalism type stratums. The porosity measuring method mainly includes the steps of accurate homing of a core depth based on physical properties of rock and nuclear magnetic resonance logging, a multi-disciplinary and multi-scale data combination organic carbon content (TOC) modeling method, a porosity sensitive parameter optimization scheme based on source rock control, and a porosity fine modeling method based on staging of the organic carbon content (TOC). According to the porosity measuring method, influences of source rock to logging responses are considered, the organic carbon content is calculated firstly, then the resource storage commensalism type stratums are staged according to the organic carbon content, and different computational formulas are adopted for calculating the porosity according to the divided stages; the porosity obtained with the method is quite accurate, and the mean absolute error, the average relative error, the correlation coefficient and the like reach the standard and the rule of 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 Applications(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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