Inter-salt shale oil reservoir rock physical mechanism and earthquake prediction method

A petrophysical and seismic prediction technology used in oil exploration

Active Publication Date: 2020-05-22
JILIN UNIV
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are few published studies on seismic rock physics prediction of inter-salt shale oil reservoirs, and the research mainly focuses on qualitative or semi-quantitative interpretation based on seismic elastic inversion

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
  • Inter-salt shale oil reservoir rock physical mechanism and earthquake prediction method
  • Inter-salt shale oil reservoir rock physical mechanism and earthquake prediction method
  • Inter-salt shale oil reservoir rock physical mechanism and earthquake prediction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Fig. 1 is the petrophysical inversion results of the fracture and clay mixture parameters of Well A in the selected work area. Figure 1a and Figure 1b The actual P- and S-wave velocity logging data (black curves) in the medium well fit well with the fitting values ​​obtained during the inversion process (red curves), indicating that the petrophysical model and inversion method are applicable to the shale in the study area.

[0106] Figure 1c is the aspect ratio αH of the horizontal fracture in shale, and its value approaching 0 indicates that the fracture is narrower and longer, and approaching 1 indicates that the fracture is closer to a spherical shape. This parameter can be used to characterize the geometry of the horizontal fracture. Such as Figure 1c As shown, the aspect ratio values ​​of horizontal fractures in each shale interval show a large range of variation. Studies have shown that this parameter can reflect the connectivity of the reservoir fracture s...

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 an inter-salt shale oil reservoir rock physical mechanism and earthquake prediction method. The method defines the rock physical mechanism of an inter-salt shale oil reservoirsystem, establishes an anisotropic rock physical model, and on the basis, a borehole rock physical inversion and earthquake prediction method is developed for the laminated structure, horizontal seamand other physical parameters of the shale oil reservoir. The rock physical model considers the ratio of illite to montmorillonite in a clay mixture, and the problem of a high abnormal value of the shale longitudinal and transverse wave velocity ratio Vp / Vs is explained through the clay intergranular soft matter property, the method is applied to actual data of an inter-salt shale oil reservoir to predict the physical characteristics of a microscopic structure related to clay and cracks in shale and the elastic anisotropy of a clay mixture, a solid matrix and the whole shale; the method is used for quantitative interpretation of a seismic elastic inversion result and predicting the spatial distribution of reservoir stratification, cracks and other physical properties and anisotropy parameters. The spatial distribution of the key physical parameters of the shale oil reservoir can be used for identifying and predicting a favorable reservoir.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploration, and in particular relates to a petrophysical mechanism and earthquake prediction method of an inter-salt shale oil reservoir. Background technique [0002] The petrophysical mechanism of shale is different from that of conventional sandstone or carbonate rock. The microscopic layered structure between minerals and organic matter in shale, lamellar and laminar structure, horizontal fractures and other physical characteristics make shale present inherent VTI (Transverselyisotropy with a vertical symmetry axis) anisotropy. In terms of shale anisotropy petrophysics, earlier studies include laboratory core measurements of anisotropy in organic-rich shales in the article "Velocity anisotropyin shales: A petrophysical study" by Vernik and Liu in Geophysics in 1997 , the petrophysical modeling carried out on this basis considers the microscopic layered interaction structure of clay and org...

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): G01V1/30G01V1/00
CPCG01V1/008G01V1/306G01V2210/624G01V2210/6242G01V2210/6244G01V2210/626
Inventor 郭智奇仉涛
Owner JILIN UNIV
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