Fracture development degree characterization method

A fracture development and degree technology, applied in the field of fracture research, can solve the problems of inability to provide accurate guidance and reference for oil and gas field exploration and development, adverse effects of in-depth research on oil and gas field exploration and development, and failure to establish a fracture development degree system, etc., to achieve good generalization and quantification To characterize and facilitate the effects of research analysis

Active Publication Date: 2020-03-27
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages existing in the prior art that a scientific and complete fracture development degree system cannot be established, which cannot provide accurate guidance and reference for oil and gas field explora

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
  • Fracture development degree characterization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0026] Such as figure 1 As shown, a fracture development degree characterization method includes the following steps:

[0027] Step 1: Using a high-resolution sequence stratigraphy method to determine the calculation step of fracture strength, the calculation step is set as the thickness of sedimentary cycle that is close to the identification accuracy of seismic data.

[0028] Fractures are not developed in a fixed lithology, so using one lithology as the boundary cannot completely represent the development degree of formation fractures, and it is difficult to unify the calculation...

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 fracture development degree characterization method, which comprises the following steps that: a high-resolution sequence stratigraphy method is adopted to determine the calculation step length of fracture strength, and the value of the calculation step length is a sedimentary cycle thickness similar to seismic data identification accuracy; crack basic parameters comprising the number of cracks and crack inclination angles are acquired; the crack linear density and the crack apparent cutting ratio are quantitatively calculated through a fixed step length and windowingmethod, the crack linear density is the ratio of the number of cracks in the calculation step length to the calculation step length, and the crack apparent cutting ratio is the ratio of the sum of tangent values of crack inclination angles in the calculation step length to the calculation step length; and the fracture development degree of the single-well coring well section is characterized according to the fracture linear density and the fracture apparent cutting ratio. On the basis of research of a high-resolution sequence stratigraphy method, the definition of the linear length in the fracture linear density is perfected by clearly calculating the step length, and the fracture development degree difference caused by the fracture inclination angle difference is solved by adopting fracture apparent cutting ratio quantitative characterization.

Description

technical field [0001] The invention relates to the technical field of fracture research, in particular to a method for characterizing the degree of fracture development. Background technique [0002] Accurate characterization of fracture development degree is the basic and important link in fracture research. The results of this link will directly affect the conclusion of follow-up work in fracture research. The established characterization methods and standards must have the principles of analogy, predictability, and quantification. Accurate and effective characterization of fracture development strength is of great significance to fracture research. [0003] How to accurately characterize the degree of fracture development has not been conclusive. Different scholars have proposed different evaluation schemes or standards for the degree of fracture development based on the fracture development characteristics and evaluation parameters of field outcrops, cores, and imaging ...

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): G01V11/00
CPCG01V11/00
Inventor 叶素娟张世华张庄高国强杨映涛田军朱丽李强胡元马森任青松黎青伍玲
Owner CHINA PETROLEUM & CHEM 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