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

A method for characterization of the strength of natural fracture development that is not limited by sample size

A technology for the development of natural fractures and fractures, which can be used in data processing applications, instruments, calculations, etc., and can solve the problem of not considering the scale of fractures.

Active Publication Date: 2019-05-24
新疆安东石油技术服务有限责任公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a natural fracture development intensity characterization method not limited by the sample size, which is used to solve the problem that the existing fracture measurement method does not consider the fracture scale question

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
  • A method for characterization of the strength of natural fracture development that is not limited by sample size
  • A method for characterization of the strength of natural fracture development that is not limited by sample size
  • A method for characterization of the strength of natural fracture development that is not limited by sample size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the present invention will be further described:

[0032] This method of characterizing the strength of natural fracture development, which is not limited by sample size, includes the following steps:

[0033] a. Collection of natural fracture data: collect the relevant parameters of natural fractures along the linear survey line, that is, record the relevant parameters of each natural fracture intersecting with the survey line, mainly including the occurrence, shape, cutting relationship and filling property of natural fractures , filling minerals and rock mechanical layer thickness, etc.;

[0034] b. Division of fracture series: use the parameters of various natural fractures obtained in step a to determine the fracture series through the shape, occurrence and cutting relationship of natural fractures. For the division of fracture series, usually only fracture series are used. In fact, the formation period of the fractu...

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 relates to a natural fracture development strength characterizing method not limited to sample size; such method comprises: acquiring natural fracture data, including fracture occurrence and form, dissection relationship, filling performance, filling minerals, rock mechanics stratum thickness and the like; determining a fracture system, to be specific, determining the system of fractures according to facture form, occurrence, dissection relationship and the like; measuring fracture opening and fracture spacing, and characterizing the fracture openness and spacing respectively from macroscale, meso-scale and microscale; carrying out standard calculation and comparison on fracture development strength, using fracture opening data acquired on different scales to standardize fracture development strength in double-log coordinates and establish a calculation formula of fracture development strength, thus calculating fracture development strength on any scale. The method of the invention imparts comparability to fracture development strength in different areas and stratums on different scales.

Description

technical field [0001] The invention relates to the related technical field of quantitative characterization and evaluation of natural fractures in fractured oil and gas reservoirs, in particular to a method for characterizing the development strength of natural fractures that is not limited by sample size. Background technique [0002] Fractures are the main factor controlling subsurface fluid flow. The scale of underground fractures (such as height, extension length and spacing, etc.) is often much larger than the wellbore drilled. For a given target layer, the probability of drilling these natural fractures is very low, even if some natural fractures are encountered. Fractures cannot collect all the parameters, and it is extremely difficult to obtain the complete development characteristics of underground fractures. Therefore, the sampling problem is the most fundamental challenge for the research on the development characteristics of underground natural fractures. [00...

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 Patents(China)
IPC IPC(8): G06F17/50G06Q50/02
CPCG06Q50/02G16Z99/00
Inventor 巩磊高帅王升平贵东闫成龙姚嘉琪
Owner 新疆安东石油技术服务有限责任公司