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Seismic fluid inversion identification method and apparatus

A technology of seismic inversion and identification method, applied in the field of petroleum exploration, which can solve the problems of lack of geological significance of fluid prediction results, less consideration of geological prior knowledge, and lack of geological information.

Active Publication Date: 2015-11-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] Existing seismic fluid identification methods based on pre-stack inversion mainly use seismic information to carry out fluid factor inversion under the constraints of logging and horizons, lacking consideration of geological information, and the inversion results have less consideration for geological prior knowledge, resulting in Fluid prediction results lack geological significance

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  • Seismic fluid inversion identification method and apparatus
  • Seismic fluid inversion identification method and apparatus

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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] see figure 1 A schematic flowchart of a seismic fluid inversion identification method disclosed by an embodiment of the present invention is shown.

[0036] In this embodiment, the method includes:

[0037] S101: Establish a three-dimensional reservoir petrophysical facies model.

[0038] Optionally, the three-dimensional physical facies model of the reservoir can be constructed in the following manner.

[0039] A: Obtain seismic interpretation infor...

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Abstract

The invention discloses a seismic fluid inversion identification method and apparatus. The method includes the following steps that: a three-dimensional rock physical phase model of a reservoir is established, and an initial model of seismic inversion is established under the constraint of the three-dimensional rock physical phase model; and pre-stack seismic inversion can be realized through utilizing seismic data of different angles, and therefore, inversion identification of the fluid of the reservoir can be completed. According to the reservoir rock physical phase constraint-based seismic fluid identification method provided by the invention, the apriori constraint of reservoir rock physical phase is considered in inversion, and fluid distribution obtained through inversion can accord with geological priori knowledge, and fluid prediction results have geological significance.

Description

technical field [0001] The present application relates to the field of petroleum exploration, more specifically, to a seismic fluid inversion identification method and device. Background technique [0002] Seismic fluid inversion identification is to use seismic data to identify and describe the fluid characteristics of the reservoir, that is, to characterize the abnormal characteristics related to pore fluid as fluid factors, and to use seismic data to realize fluid factor inversion and guide the process of fluid identification. The fluid factor was first defined as a parameter composed of the weight difference operation of the relative variation of P- and S-wave velocity. With the popularization and application of fluid factor in reservoir prediction, the concept of fluid factor does not only refer to a specific parameter, but is endowed with a broader meaning, that is, for a research work area, the The parameters for effectively distinguishing pore fluid types can be cal...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 宗兆云印兴耀吴国忱
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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