Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Numerical simulation method of seismic response of gas-bearing sandstone reservoir based on petrophysical model

A petrophysical model, numerical simulation technology, applied in seismology, geophysical measurement, seismic signal processing, etc., can solve problems such as stay, subjectivity inaccuracy, etc.

Active Publication Date: 2018-06-08
CHENGDU UNIVERSITY OF TECHNOLOGY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the analysis of seismic wave attenuation characteristics based on rock physical models mostly stays in the discussion of reflection coefficients, while the establishment of models in traditional wave equation forward modeling is mostly based on the estimation of seismic wave velocity in actual formations, so the subjectivity of human intervention is increased. becomes inaccurate, and the geological model based on the rock physics model is more realistic, so the combination of the rock physics model and the forward modeling of the wave equation is an inevitable development trend of the numerical simulation method

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
  • Numerical simulation method of seismic response of gas-bearing sandstone reservoir based on petrophysical model
  • Numerical simulation method of seismic response of gas-bearing sandstone reservoir based on petrophysical model
  • Numerical simulation method of seismic response of gas-bearing sandstone reservoir based on petrophysical model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following technical solutions in the present invention are clearly and completely described. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0072] The present invention provides a method for numerical simulation of seismic response of gas-bearing sandstone reservoirs based on a petrophysical model. The model is a spatially periodic arrangement of spherical plaque saturation models. The effective bulk modulus can be obtained by using the Gassmann equation to obtain the equivalent bulk modulus of the rock; at high frequencies, the bulk modulus of different fluids is first calculated according to the Gas...

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 provides a gas containing sandstone reservoir seismic responding value simulating method based on a rock physical model. Based on a spherical patchy saturation model, the physical and seismic dynamic characteristics of common gas containing sandstone can be well described, and a diffusivity-viscosity wave equation theory is used to introduce the attenuation and energy loss caused by the existence of fluids during the propagation process of earthquake waves. The frequency-wave number domain diffusivity-viscosity wave equation is utilized to carry out forward modeling to effectively represent the geophysical characteristics of a rock physical model; and by combining the diffusivity characteristics and viscosity characteristics introduced by the diffusivity-viscosity theory, the seismic corresponding characteristics of common gas containing sandstone can be represented more directly and precisely.

Description

technical field [0001] The invention relates to the field of geological technology, in particular to a numerical simulation method for seismic response of gas-bearing sandstone reservoirs based on rock physics models. Background technique [0002] At present, the analysis of seismic wave attenuation characteristics based on rock physics models mostly stays in the discussion of reflection coefficients, while the establishment of models in traditional wave equation forward modeling is mostly based on the estimation of seismic wave velocity in the actual formation, so the subjectivity of human intervention is increased. Therefore, the combination of rock physics model and wave equation forward modeling is an inevitable development trend of numerical simulation methods. [0003] The patch saturation model is a petrophysical model saturated with fluid, partly gas-bearing and partly water-bearing, which can be used to simulate the petrophysical characteristics of conventional gas-...

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): G01V1/30
CPCG01V1/306G01V2210/624
Inventor 李世凯文晓涛李天张瑞张懿疆刘婷
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com