Unlock instant, AI-driven research and patent intelligence for your innovation.

Method utilizing array sound wave logging information for determining rock brittleness coefficients

A technology for array acoustic logging and rock brittleness, applied in seismic signal processing and other directions

Inactive Publication Date: 2015-02-11
BC P INC CHINA NAT PETROLEUM CORP
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the brittleness coefficient obtained in the prior art has defects in determining the reservoir fracturing scheme, the embodiment of the present invention provides a method for determining the rock brittleness coefficient using array acoustic logging data

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 utilizing array sound wave logging information for determining rock brittleness coefficients
  • Method utilizing array sound wave logging information for determining rock brittleness coefficients
  • Method utilizing array sound wave logging information for determining rock brittleness coefficients

Examples

Experimental program
Comparison scheme
Effect test

example

[0143] Taking the acquisition method of reservoir rock brittleness coefficient of section C7 (2376.1-2433.5m) of CH270 well in a certain area of ​​Changqing Oilfield as an example, the method for obtaining rock brittleness coefficient by using array acoustic logging data provided by the embodiment of the present invention is described, and the method of using The rock brittleness coefficient obtained by this method has important guiding significance for optimizing the fracturing scheme and accurately determining the perforation section and pressure value.

[0144] In this example, the array acoustic logging data is used to determine the rock brittleness coefficient of the reservoir in the C7 member of CH270 well in a certain area of ​​Changqing Oilfield.

[0145] Known data: Array acoustic logging data, part of core experiment data of C7 member reservoir of Well CH270 in a certain area of ​​Changqing Oilfield.

[0146] Method: the method provided by the embodiment of the prese...

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 method utilizing array sound wave logging information for determining rock brittleness coefficients and belongs to the application field of array sound wave logging information. According the method, firstly, dynamic parameters of rocks are calculated by utilizing the array sound wave logging information, secondly, the dynamic parameters and discontinuously-changed static parameters acquired through rock center experiments on reservoir steps are combined, and continuously-changed static parameters on the reservoir steps are acquired by employing a center scale logging method, and the rock brittleness coefficients are calculated by employing the continuously-changed static parameters on the reservoir steps. According to the method, the rock brittleness coefficients at continuous depths can be acquired, continuity on the reservoir steps is realized, the rock brittleness characteristics of different depth reservoirs can be truly reflected, so fracturing rebuilding construction on the reservoirs can be more accurately and effectively guided, and work efficiency and economic benefits are improved.

Description

technical field [0001] The invention relates to the engineering application field of array acoustic logging data, in particular to a method for determining rock brittleness coefficient by using array acoustic logging data. Background technique [0002] The stress-strain whole process curve of the rock is within a certain range of confining pressure, and the peak strength drops rapidly and is very close to the landmark, which is called the brittleness characteristic of the rock. The brittleness characteristics of rocks are generally expressed by brittleness coefficients. Rock brittleness plays a huge role in petroleum engineering, especially in formulating low-porosity and low-permeability reservoir reconstruction plans to guide the fracturing process of the reservoir. It is of great significance. Whether the rock brittleness coefficient can truly reflect the rock The brittle characteristics of the fracture will directly determine the success or failure of the fracturing ope...

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 Applications(China)
IPC IPC(8): G01V1/28
Inventor 杨双定杨林夏宏权姜薇薇马德录
Owner BC P INC CHINA NAT PETROLEUM CORP