Method for evaluating CO2 geological storage body

A geological storage body and geological technology, applied in the field of geological evaluation of CO2 storage body, can solve the problems of comprehensive evaluation of difficult-to-storage body, failure to analyze reservoir and sealing layer at the same time, etc.

Active Publication Date: 2014-01-22
NORTHWEST UNIV
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  • Abstract
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Problems solved by technology

but did not analyze CO at the same time 2 The geological characteristics of the reservoir and the caprock, especially the influence of the caprock on the CO2 in the reservoir 2 Comparing the differences ...

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  • Method for evaluating CO2 geological storage body
  • Method for evaluating CO2 geological storage body
  • Method for evaluating CO2 geological storage body

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Embodiment Construction

[0036] Aiming at the limitations of prior art research in this area, the present invention mainly considers the following issues: (1) For the storage body, the reservoir and the caprock have different functions, the reservoir is used to store gas, and the caprock is used to block Gas escapes upward, so the two are equally important; (2) What are the internal causes and controlling factors that cause the different properties of reservoir and caprock and the difference in sealing performance; (3) Unilateral geological Information is difficult to fully reflect the storage capacity of geological bodies, how to effectively and rationally use geological evaluation marks and logging response characteristics to establish a comprehensive evaluation system for storage bodies; (4) the introduction of multiple geological evaluation marks and multiple logging response curves, It will inevitably bring more errors. How to reduce this artificial error and improve the accuracy of evaluation st...

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Abstract

The invention discloses a method for evaluating the sealing capacity of an oil and gas field reservoir serving as a CO2 storage body at the middle and later periods of oil and gas field exploitation. According to the method, to overcome the defects of the prior art and solve the problems existing in the prior art, based on deep geological research of the storage body, the difference between the reservoir and an overlying strata is considered, a geology evaluating mark set is established and corresponds to log response characteristics, and then the problems existing in CO2 storage evaluation are solved within the oil field spreading range. The method for evaluating the CO2 geological storage body is based on geology evaluating marks and the log response characteristics and comprises the steps of (1) researching various geology evaluating mark parameters of the reservoir and the overlying strata of the geological storage body, (2) establishing the corresponding relation between the geology evaluating marks and the log response characteristics, (3) analyzing the main difference between the reservoir and the overlying strata on lithology and physical property and the cause of the difference, and (4) establishing the technological standard and method for evaluating the CO2 geological storage body of a certain oil field.

Description

technical field [0001] The invention belongs to CO 2 The field of geological evaluation of storage bodies, specifically the evaluation of CO 2 The method for the geological storage body, in particular relates to a geological evaluation method utilizing multiple geological evaluation marks and logging data processing and interpretation. Background technique [0002] CO 2 The capture and storage of CO2 from industrial point sources 2 The gas is transported to the selected storage site, and it is isolated from the atmosphere for a long time (hundreds to thousands of years or even longer), so as to effectively control the CO in the atmosphere 2 increase in the amount of gas. At present, the main research in this area includes: storage in deep geological media and oceans, followed by the use of mineral carbonation to convert CO 2 fixed on the ground. Projects widely carried out in the petroleum industry and other fields are to use late-stage development or abandoned oil an...

Claims

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Application Information

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IPC IPC(8): E21B49/00G01V9/00
Inventor 王震亮刘妍吴璠曹龙
Owner NORTHWEST UNIV
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