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Interlayer earthquake prediction method and device

A technology for seismic prediction and interlayer separation, which is applied in the field of geophysical exploration and can solve problems such as the inability of seismic inversion to play a role, and achieve the effects of improving cross-well lateral prediction accuracy, quality, and inversion vertical resolution.

Active Publication Date: 2020-01-03
PETROCHINA CO LTD
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Problems solved by technology

[0005] The present invention provides an interlayer earthquake prediction method and device to solve the technical problem in the prior art that seismic inversion is difficult to play a role in interlayer prediction, so as to achieve the purpose of interlayer prediction

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  • Interlayer earthquake prediction method and device
  • Interlayer earthquake prediction method and device

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[0072] 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.

[0073] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than...

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Abstract

The invention provides an interlayer earthquake prediction method and device. The interlayer earthquake prediction method comprises the steps of obtaining a brittleness index curve of a to-be-predicted reservoir, improving the main frequency of the original seismic data, obtaining the topological seismic data, carrying out seismic inversion according to the brittleness index curve and the topological seismic data and utilizing a preset geological statistical inversion algorithm to obtain inversion result data, and carrying out predicting on the interlayer according to the inversion result data. According to the interlayer earthquake prediction method provided by the invention, the interlayer in the reservoir is effectively identified by establishing the brittleness index curve; meanwhile,the seismic data quality is effectively improved, a fine geological constraint model is established, geological statistical inversion is carried out, the inversion longitudinal resolution is improved,and the inter-well lateral prediction precision is improved, so that the purpose of interlayer prediction is achieved.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to an interlayer earthquake prediction method and device. Background technique [0002] Interlayers are impermeable or ultra-low permeability layers distributed in sandstone reservoirs. It divides thick oil layers into multiple independent flow units, which is an important reason for the heterogeneity inside the reservoir. The research on interlayers is a marine sandstone reservoir. The key to the study of heterogeneity. [0003] According to the characteristics of lithology, diagenetic lithofacies and well logging data, interlayers can be roughly divided into three types: calcareous interbeds, calcareous-mud interbeds and argillaceous interbeds. The research method in the prior art is mainly based on the physical properties of the core, based on the logging data, on the basis of the fine calculation of the porosity and permeability, combined with the density, gamma...

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Application Information

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IPC IPC(8): G01V1/36G01V1/30G01V1/40
CPCG01V1/306G01V1/36G01V1/40
Inventor 陈猛王兴军陈阳阳王川崔永福杜禹左安鑫赖敬容李文燕顾成龙张耀堂
Owner PETROCHINA CO LTD
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