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Micro-seismic event detection method and system using PCA classification

An event detection and micro-seismic technology, applied in the petroleum field, can solve the problems of inability to process massive data, unguaranteed pickup quality, time-consuming and labor-intensive accuracy and reliability, etc.

Inactive Publication Date: 2020-12-15
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In contrast, manual methods are often used in production, which is time-consuming and labor-intensive, with poor accuracy and reliability, and the quality of picking cannot be guaranteed, nor can it handle massive amounts of data.

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  • Micro-seismic event detection method and system using PCA classification
  • Micro-seismic event detection method and system using PCA classification
  • Micro-seismic event detection method and system using PCA classification

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Embodiment Construction

[0110] The following will clearly and completely describe the technical scheme in the embodiment of the invention with reference to the drawings in the embodiment of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of them. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in the field without creative labor are within the scope of the present invention.

[0111] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be explained in further detail below with reference to the drawings and detailed description.

[0112] Figure 1 Flow diagram of a microseismic event detection method using PCA classification

[0113] Figure 1 This invention is a flow diagram of a microseismic event detection method using PCA classification. such as Figure 1 As shown, the microseismic ...

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Abstract

The embodiment of the invention discloses a micro-seismic event detection method and system using PCA classification. The method comprises the steps of step 101, acquiring a signal sequence S acquiredaccording to a time sequence; step 102, generating N window signal sequences; step 103, solving N characteristic vectors; step 104, solving an average characteristic vector [psi]; step 105, solving ascatter matrix CK; step 106, solving an optimal PCA classification matrix UOPT; step 107, solving a PCA classification value HK; step 108, solving a micro-seismic event judgment threshold [epsilon]0;and step 109, detecting a micro-seismic event.

Description

Technical field [0001] The invention relates to the field of petroleum, in particular to a microseismic event detection method and system. technical background [0002] Hydraulic fracturing microseismic monitoring technology is an important new technology developed in recent years in the fields of low permeability reservoir fracturing, reservoir drive and water drive front, and it is also an important supporting technology for shale gas development. This technology arranges multi-stage three-component detectors in adjacent wells, monitors microseismic events generated in the target interval of the fractured well during hydraulic fracturing, and inverses the microseismic events to obtain parameters such as source position, thus describing the geometric shape and spatial distribution of fracture growth during hydraulic fracturing, providing the length, height, width and orientation of fractures generated by hydraulic fracturing in real time, and realizing the industrial development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30G01V1/18
CPCG01V1/181G01V1/307G01V2210/63
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH