Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for predicting reservoir by relaxation factor pre-stack seismic inversion

A pre-stack seismic and relaxation factor technology, applied in the fields of petroleum geophysical exploration and reservoir exploration, can solve problems affecting accuracy

Active Publication Date: 2013-10-16
PETROCHINA CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difference between the parameter coefficient items leads to the difference in the strength of the seismic response of each parameter, which will affect the inversion accuracy of each parameter.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for predicting reservoir by relaxation factor pre-stack seismic inversion
  • Method for predicting reservoir by relaxation factor pre-stack seismic inversion
  • Method for predicting reservoir by relaxation factor pre-stack seismic inversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[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] figure 1 A flow chart of a method for reservoir prediction using relaxation factor pre-stack seismic inversion provided by an embodiment of the present invention, consisting of figure 1 It can be seen that the method includes:

[0036] S101: Collect the pre-stack seismic angle gather data in the seismic work area and the corresponding logging data in the seismic work area. Select N in the seismic work area TRACE Seismic traces, select N in each sei...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for predicting a reservoir by relaxation factor pre-stack seismic inversion. The method comprises the following steps of: A, acquiring pre-stack seismic angle gather data and corresponding logging data in a seismic work area; B, generating an initial model of longitudinal wave velocity, transverse wave velocity and density according to a prior geological layer and the logging data; C, superposing the pre-stack seismic angle gather data to form n superposed seismic angle gathers at different angles; D, extracting corresponding n subwaves according to the n superposed seismic angle gathers; and E, gradually extracting a superposed seismic angle gather, the corresponding subwave and the like from the n superposed seismic angle gathers and the corresponding n subwaves. A relaxation factor generated by the longitudinal wave velocity, the transverse wave velocity and the density is added into the inversion process to predict the reservoir, so that the accuracy of predicting the reservoir is improved, and the advantageous position of oil and gas is more obviously indicated.

Description

technical field [0001] The present invention relates to the field of petroleum geophysical exploration, in particular to the technical field of reservoir exploration, and specifically relates to a method for reservoir prediction using relaxation factor pre-stack seismic inversion. Background technique [0002] Seismic inversion is an important subject in the field of reservoir geophysical exploration. In the prior art, the following methods are mainly used for earth inversion: [0003] 1. Post-stack seismic inversion [0004] Traditional post-stack seismic inversion is to convert seismic data into wave impedance profiles for reservoir prediction, but this method requires the reservoir to have identifiable characteristics in wave impedance, and the post-stack inversion results are affected by the initial model larger. With the continuous improvement of exploration and development technology, the characteristics of reservoirs are becoming more and more complex, and more and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
Inventor 魏超郑晓东李劲松
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com