Prediction method and device for brittleness of reservoir rock

A rock brittleness and prediction method technology, applied in the field of geophysical exploration, can solve the problems of small sample data and difficulty in truly describing the brittleness of tight reservoirs

Active Publication Date: 2015-03-11
PETROCHINA CO LTD
View PDF2 Cites 50 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because rock mechanics tests can only be carried out on a small number of cores, the sample data is too small to truly describe the brittleness of tight reservoirs, and thus cannot be directly used

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
  • Prediction method and device for brittleness of reservoir rock
  • Prediction method and device for brittleness of reservoir rock
  • Prediction method and device for brittleness of reservoir rock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described The embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of the present invention.

[0071] Please refer to figure 1 , An embodiment of the present application provides a method for predicting the brittleness of reservoir rock, which includes the following steps:

[0072] S101. Obtain a first data volume of a core sample of the reservoir to be predicted and a second data volume of the reservoir to be predicted, where the first data ...

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 discloses a prediction method and device for brittleness of reservoir rock. The prediction method comprises the following steps: firstly, obtaining dynamic and static elastic parameters of core samples of the reservoir to be predicted and the mechanical parameters of the rocks through a static mechanical test, an ultrasonic test and a core bursting test, calculating the dynamic elastic parameters of the reservoir to be predicted according to prestack seismic inversion results, and further calculating the static elastic parameters of the reservoir to be predicted and the mechanical parameters of the rocks; then, building the relationship among the dynamic and static elastic parameters and the mechanical parameters of the rocks through a linear fitting method, further calculating the comprehensive brittleness indexes of the rocks, and predicting the brittleness of rock of the reservoir to be predicted through the comprehensive brittleness indexes. By adopting the prediction method and the device provided by the invention, rock brittleness of the tight reservoir can be described relatively truly.

Description

Technical field [0001] This application relates to the field of geophysical prospecting, in particular to a method and device for predicting the brittleness of reservoir rocks. Background technique [0002] In recent years, the research on shale gas and tight oil and gas has become a hot spot in China. In the development process of tight reservoirs such as shale gas and tight oil, hydraulic fracturing technology has become a major technical means to improve oil and gas recovery. The brittleness index is an important parameter to measure whether the rock is easy to fract. The determination of the fracturing construction location and the selection of construction parameters are very important. [0003] The current methods for predicting rock brittleness are roughly divided into three categories: according to the proportion of brittle minerals, according to elastic parameters, and according to rock mechanics tests. [0004] According to the proportion of brittle minerals, there are ma...

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): G01N3/08G01V1/28
Inventor 李凌高孙夕平陈树民赵海波于永才汤文
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