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Effective fracture zone prediction method and device

A prediction method and fracture zone technology, applied in the field of unconventional reservoir exploration, can solve problems such as ineffective fracture zone prediction, and achieve the effect of accurate prediction

Pending Publication Date: 2020-10-16
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide a method, device and computer storage medium for predicting an effective fracture zone, and solve the technical problem that the effective fracture zone cannot be directly predicted in the prior art

Method used

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  • Effective fracture zone prediction method and device

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Experimental program
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Embodiment 1

[0021] Such as figure 1 As shown, Embodiment 1 of the present invention provides an effective fracture zone prediction method, comprising the following steps:

[0022] S1. Identify effective fractures, classify effective fracture types, and determine the development range of single well effective fracture zones;

[0023] S2. Establish an intersection map of different petrophysical properties, and screen out different physical properties for distinguishing different fracture zones according to the intersection map;

[0024] S3, using the Bayesian discriminant method to establish a discriminant formula for the effective fracture zone according to the distinguishing physical attributes;

[0025] S4. Obtain the three-dimensional data volume of the different physical properties of the formation to be measured, combine the discriminant formula to predict the effective fracture zone, and obtain the spatial distribution of the effective fracture zone.

[0026] In the embodiment of t...

Embodiment 2

[0061] Embodiment 2 of the present invention provides an effective fracture zone prediction device, including a processor and a memory, and a computer program is stored on the memory. When the computer program is executed by the processor, the effective fracture zone provided by Embodiment 1 is realized. method of prediction.

[0062] The effective fracture zone prediction device provided in the embodiment of the present invention is used to realize the effective fracture zone prediction method. Therefore, the effective fracture zone prediction device also has the technical effects of the effective fracture zone prediction method, and will not be repeated here.

Embodiment 3

[0064] Embodiment 3 of the present invention provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, the effective fracture zone prediction method provided in Embodiment 1 is realized.

[0065] The computer storage medium provided by the embodiment of the present invention is used to realize the effective fracture zone prediction method. Therefore, the technical effects of the effective fracture zone prediction method are also provided by the computer storage medium, and will not be repeated here.

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Abstract

The invention relates to the technical field of unconventional reservoir exploration, and discloses an effective fracture zone prediction method and device and a computer storage medium. The method comprises the following steps of recognizing effective fractures, dividing the types of the effective fractures, and determining the development range of a single-well effective fracture zone, analyzingthe difference of effective fractures on stratum rock physical attributes, establishing an intersection diagram of different rock physical attributes, and screening out physical attributes for distinguishing different fracture zones according to the intersection diagram, adopting a Bayesian discrimination method, establishing a discrimination formula of an effective fracture zone according to thephysical attributes, and acquiring a three-dimensional data volume for distinguishing physical attributes of the stratum to be measured, and performing three-dimensional discrimination on the effective fracture zone in combination with the discrimination formula to obtain spatial distribution of the effective fracture zone. According to the effective fracture zone prediction method and device andthe computer storage medium provided by the invention, the effective fracture zone spatial distribution can be directly predicted, and the prediction accuracy is relatively high.

Description

technical field [0001] The invention relates to the technical field of unconventional reservoir exploration, in particular to an effective fracture zone prediction method, device and computer storage medium. Background technique [0002] With the intensification of exploration and development of tight sandstone gas and shale oil and gas in recent years, more and more attention has been paid to the study of fractures. In tight sandstone gas reservoirs, natural fractures are not only the main factor to improve the original permeability of the reservoir, but also the key to the subsequent fracturing development and well pattern deployment. Fractures are the "lifeline" of oil and gas development in tight sandstone reservoirs. [0003] Since the 1960s, domestic and foreign scholars have carried out a lot of work on fractures in terms of fracture classification, controlling factors, identification, prediction, and artificial fracturing. The biggest difficulty in the exploration an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/306G01V2210/624
Inventor 赵仲祥何幼斌罗水亮
Owner YANGTZE UNIVERSITY