Method and device for predicating characteristics of shale gas reservoir

A technology of reservoir characteristics and prediction method, applied in the field of natural gas exploration, can solve the problem of low accuracy of shale gas reservoir characteristics prediction

Inactive Publication Date: 2015-03-25
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0004] The present invention provides a shale gas reservoir property prediction method and device, which are used to

Method used

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  • Method and device for predicating characteristics of shale gas reservoir
  • Method and device for predicating characteristics of shale gas reservoir
  • Method and device for predicating characteristics of shale gas reservoir

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Embodiment Construction

[0017] figure 1 A schematic flow chart of a method for predicting properties of shale gas reservoirs provided by an embodiment of the present invention, as shown in figure 1 shown, including:

[0018] 101. Determine the lithofacies type of the shale gas reservoir according to the organic carbon content TOC and the whole-rock mineral composition of the shale gas reservoir.

[0019] Specifically, according to the TOC of the shale gas reservoir, determine the first subtype of the lithofacies of the shale gas reservoir; The second subtype of lithofacies for gas reservoirs.

[0020] For example, for determining the first subtype of the lithofacies of the shale gas reservoir according to the TOC of the shale gas reservoir, it may specifically be: use a carbon-sulfur analyzer to measure, and obtain the shale gas TOC of the gas reservoir, if TOC≤1%, the first subtype is determined to be organic-poor shale gas reservoir lithofacies; if 1%

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Abstract

The invention provides a method and device for predicating the characteristics of a shale gas reservoir. The method comprises the steps that according to the TOC and a whole rock-mineral of the shale gas reservoir, the lithofacies type of the shale gas reservoir is determined, and further the organic geochemical characteristic and the sediment characteristic of the shale gas reservoir are predicted according to the lithofacies type. Due to the fact that the lithofacies type of the shale gas reservoir is determined according to the TOC and the whole rock-mineral of the shale gas reservoir, the determined lithofacies type can accurately reflect the important organic geochemical characteristic and the sediment characteristic in the characteristics of the shale gas reservoir, and the technical problem that in the prior art, the accuracy of prediction of the characteristics of the shale gas reservoir is not high is solved.

Description

technical field [0001] The invention relates to natural gas exploration technology, in particular to a method and device for predicting properties of shale gas reservoirs. Background technique [0002] Shale gas is an unconventional natural gas that hides in shale or mudstone layers in a free or adsorbed state. The formation and enrichment of shale gas has its own unique characteristics, and it is often distributed in thick and widely distributed shale source rock formations in the basin. In different reservoirs, the recoverability of shale gas is often different. Therefore, it is necessary to predict the characteristics of shale gas reservoirs before shale gas exploitation, so as to determine the recoverability of shale gas. [0003] Shale lithofacies is an important basis for predicting the characteristics of shale gas reservoirs. The determination of shale lithofacies in the prior art is either based on perceptual knowledge, mineral composition, or paleontological fossil...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 唐相路姜振学郝进李卓原园黄何鑫李卫兵杨佩佩
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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