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Method for evaluating reservoir-cap combination and method for predicting reservoir productivity

A technology for reservoir-caprock assemblage and reservoir, which is applied in the field of oil and gas reservoir exploration and development, can solve the problems of low accuracy, complex evaluation method of reservoir-caprock assemblage, and complicated reservoir productivity prediction method, and achieves high evaluation accuracy and evaluation method. Simple, simple analysis process

Active Publication Date: 2018-03-13
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] The present invention aims at at least solving the technical problems existing in the prior art, and particularly innovatively proposes a method for evaluating reservoir-cap combination, so as to solve the problem that the current reservoir-cap combination evaluation method is complicated and has low accuracy
[0006] The present invention also provides a reservoir productivity prediction method to solve the problem that the current reservoir productivity prediction method is complicated and has low accuracy

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  • Method for evaluating reservoir-cap combination and method for predicting reservoir productivity
  • Method for evaluating reservoir-cap combination and method for predicting reservoir productivity
  • Method for evaluating reservoir-cap combination and method for predicting reservoir productivity

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[0043] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0044] In describing the present invention, the steps shown in the flowcharts of the figures may be performed on a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flowcharts, in some cases In this case, the steps shown or described may be performed in an order different from that herein.

[0045] figure 1 A flow chart of the method for evalua...

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Abstract

The present invention proposes a method for evaluating reservoir-cap combinations and a method for predicting reservoir productivity. The evaluation method includes: obtaining imaging data images; using logging curves to determine the depth distribution range of reservoirs and caprocks; The depth distribution range of the cover layer is scaled to the imaging data image to determine the distribution of the reservoir and the cover layer on the imaging data image; adjust the chromatogram value of the reservoir layer on the imaging data image, and record the chromatogram of the reservoir layer when the boundary of the reservoir layer is clearly displayed value, and use this chromatogram value as the threshold value of the reservoir; adjust the chromatogram value of the cap layer on the imaging data image, record the chromatogram value of the cap layer when the boundary of the cap layer is clear, and use this chromatogram value as the threshold value of the cap layer; The threshold value of the reservoir and the cap rock threshold corresponding to the reservoir are combined to form a threshold combination, and the reservoir-cap combination is evaluated by the threshold combination. The invention has higher evaluation accuracy on the storage-cap combination, and the method is simpler.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and gas reservoirs, in particular to a method for evaluating reservoir-cap combinations and a method for predicting reservoir productivity. Background technique [0002] In the prior art, it is generally only the research on the reservoir or the evaluation on the caprock, and there are relatively few studies on the integration of reservoir-caprock assemblages. Through research, it is found that a small amount of well logging methods to evaluate reservoir-caprock assemblages mainly use reservoir and caprock physical property parameters and in-situ stress parameters to evaluate reservoir and caprock quality, among which physical property parameters are mainly porosity, permeability, and hydrocarbon saturation ; In-situ stress parameters mainly consider cap rock breakthrough pressure. Some methods also take into account the thickness of the reservoir and caprock and the lithology of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
Inventor 王丹丹李浩魏修平冯琼
Owner CHINA PETROLEUM & CHEM CORP
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