Shale gas reservoir quality evaluation method based on logging information

A technology for logging data and reservoir quality, applied in the field of shale gas reservoir quality evaluation based on logging data

Inactive Publication Date: 2015-12-09
PETROCHINA CO LTD
View PDF6 Cites 51 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low porosity, ultra-low permeability, and nanoscale pores of shale reservoirs, large-scale volume fracturing is usually used in the development of shale gas wells. Therefore, how to use well logging data to dete

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
  • Shale gas reservoir quality evaluation method based on logging information
  • Shale gas reservoir quality evaluation method based on logging information
  • Shale gas reservoir quality evaluation method based on logging information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0094] 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.

[0095] figure 1 It is a flow chart of Embodiment 1 of a method for evaluating the quality of shale gas reservoirs based on well logging data provided by the present invention. figure 1 As can be seen, the method includes:

[0096] S101, collecting logging data and core data of the target interval; in a specific implementation manner, shale reservoir intervals of different horizons in the oilfield block may be selected as the target interval to be studied.

...

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 shale gas reservoir quality evaluation method based on logging information. The method includes the steps that the logging information and core information of a target layer section are collected; the organic carbon content, the clay content, the formation pressure coefficient and the gas content of the target layer section shale are determined according to the logging information and core information; the effective thickness of target layer section shale stratum is determined according to the organic carbon content; the buried depth of the shale stratum is determined according to the effective thickness; the weighted values corresponding to the organic carbon content, the clay content, the formation pressure coefficient and the total gas content, the effective thickness and the buried depth are determined respectively according to prestored shale gas well data and gas pool deliverability; the quality of a shale gas reservoir is evaluated according to the weight values, the organic carbon content, the clay content, the formation pressure coefficient, the total gas content, the effective thickness and the buried depth. By means of the method, a shale gas reservoir quality evaluation method is established, and the actual production requirements for reservoir quality and capacity level prediction are met in shale gas exploration and development.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to the logging field of oil and gas reservoirs in petroleum exploration, and specifically relates to a method for evaluating the quality of shale gas reservoirs based on logging data. Background technique [0002] As an important unconventional natural gas resource, shale gas has become a new highlight in the exploration and development of global oil and gas resources. It has attracted more and more attention from many countries and oil companies. It is one of the important fields of oil and gas exploration and development today. [0003] The geological conditions and formation mechanism of shale gas are completely different from traditional petroleum geological theories. The understanding of shale gas formation mechanism, enrichment law and main controlling factors at home and abroad has not yet been fully clarified. Due to the low porosity, ultra-low permeability, a...

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): E21B49/00
Inventor 李霞程相志杨小兵王铜山李潮流刘忠华王昌学胡松袁超
Owner PETROCHINA CO LTD
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