Method for evaluating shale gas reservoir and finding dessert area

A technology for shale reservoirs and shale gas, which is applied in the field of searching for sweet spots in shale gas exploration and development, and can solve the problem of evaluating geophysical exploration technology for undisclosed shale gas reservoirs and evaluating the gas-bearing prospects of shale gas reservoirs and other issues to achieve the effect of improving the section resolution and widening the frequency band

Active Publication Date: 2015-10-14
BGP OF CHINA NAT GASOLINEEUM CORP
View PDF4 Cites 94 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, in the current shale gas exploration, the application test of logging or seismic exploration technology is only carried out in trial exploration, and the comprehensive geophysical exploration technology has not been applied to evaluate the gas-bearing prospect o

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 evaluating shale gas reservoir and finding dessert area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0064] The present invention mainly is made up of following specific steps:

[0065] The present invention is realized through the following steps, as figure 1 Shown:

[0066] 1) Drill core pillars in different directions on the core pillars with different buried depths in all wells in the exploration area, vacuum the core pillars and pressurize and saturate them with mineralized water with the same resistivity as the mineralized water in the formation. The different directions are vertical, horizontal, and 45-degree angles with the occurrence of the formation. The core column is about 2.5 cm in diameter and about 5 cm in length.

[0067] 2) Under the conditions of simulated underground confining pressure and pore pressure in the laboratory, measure the dynamic and static elastic parameters, elastic wave attenuation coefficient, dispersion effect and compressional ...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for carrying out shale gas reservoir evaluation and finding a dessert area for shale gas exploration and development comprehensively through comprehensive application of rock physics, log data and omnibearing or wide-azimuth three-dimensional seismic data. The method is characterized by analyzing the characteristics of the dessert area in a shale reservoir by applying comprehensive geophysical exploration technologies of laboratory rock geophysical measurement, log data comprehensive analysis, rock physical modeling, vertical seismic section data, omnibearing or wide-azimuth three-dimensional seismic data high precision surface layer comprehensive modeling static correction processing, prestack de-noising processing, amplitude relative fidelity processing, resolution enhancement processing which is carried out by utilizing well constraint and well seismic data to drive ground seismic data, fine excision, iteration velocity analysis, interval velocity field analysis, prestack depth migration processing, high resolution processing, azimuth classification processing, high-precision anisotropy processing, prestack and post-stack data inversion processing, and neural network analysis and the like, and thus gas bearing characteristic prospect of the shale gas reservoir is evaluated accurately and the dessert area for shale gas exploration and development is delineated.

Description

technical field [0001] The invention belongs to the application of geophysical exploration methods, which is a comprehensive application of petrophysics, logging data, omnidirectional or wide azimuth three-dimensional seismic data and vertical seismic profile data and other comprehensive geophysical exploration techniques to evaluate shale gas reservoirs and search for shale gas reservoirs. A method for rock gas exploration and development of sweet spots. Background technique [0002] Shale gas resources are abundant, and the exploration and development of shale gas is expected to alleviate the energy crisis. However, as a kind of oil and gas resources, although its accumulation mode is different from that of conventional oil and gas reservoirs, the exploration and development are in the exploratory stage, mainly concentrated in the The study of shale gas accumulation model and geological characteristics, etc., and the role of geophysical technology in shale gas exploration ...

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
IPC IPC(8): G01V1/50
Inventor 余刚张宇生王熙明万小平金其虎程飞李可恩刘伟郭锐
Owner BGP OF CHINA NAT GASOLINEEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap