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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 the horizontal prediction accuracy between wells, the vertical resolution of the inversion, and the quality.

Active Publication Date: 2021-09-28
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. A kind of interlayer earthquake prediction method provided by the present invention comprises: obtaining the brittleness index curve of the reservoir to be predicted, increasing the main frequency of the original seismic data, obtaining the extended frequency seismic data, according to the brittleness index curve and the extended frequency seismic data, and using The preset geostatistical inversion algorithm carries out seismic inversion, obtains the inversion result data, and predicts interlayers according to the inversion result data. The interlayer earthquake prediction method provided by the present invention can effectively identify the interlayer interlayer in the reservoir by establishing a brittleness index curve, and at the same time effectively improve the quality of seismic data, establish a fine geological constraint model, carry out geostatistical inversion, and improve the vertical resolution of the inversion At the same time, the accuracy of lateral prediction between wells is improved, so as to realize the purpose of interlayer prediction.

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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Patent Type & Authority Patents(China)
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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