Supercharge Your Innovation With Domain-Expert AI Agents!

Method for Calculating Filling Degree of Carbonate Fracture-vuggy Reservoir

A technology of filling degree and carbonate rock, which is applied in the field of calculating the filling degree of carbonate rock fracture-cavity reservoirs, can solve problems such as calculation errors of underground resources, influence on deployment of oilfield exploration and development work, and economic losses, so as to avoid effect of error

Active Publication Date: 2017-10-17
PETROCHINA CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional exploration techniques are not easy to detect changes in lithology, and cannot be directly used for hydrocarbon detection. Finding remaining oil and improving recovery have become the focus and difficulty of oilfield development, and are also the key to stable production.
[0005] At present, the methods for calculating porosity in carbonate fracture-cavity reservoirs known at home and abroad are generally the average porosity method, which does not take into account the differences in filling degrees in different fracture-cavity reservoirs. Large errors are caused to the calculation of the actual underground resources, which in turn affects the actual deployment of oilfield exploration and development work, resulting in economic losses

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 for Calculating Filling Degree of Carbonate Fracture-vuggy Reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] The embodiment of the present invention provides a method for calculating the filling degree of fractured-vuggy carbonate reservoirs (the filling degree is also called the filling rate) in seismic amplitude type attribute exploration, figure 1 It is a flow chart of the method for calculating the filling degree of carbonate fracture-cavity reservoirs in seismic amplitude type property exploration according to an embodiment of the present inven...

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 for calculating the filling degree of fracture-cavity reservoirs in carbonate rocks, which is applied in the exploration of seismic amplitude attributes, including: extracting seismic attribute plane maps along seismic interpretation horizons in the research area; obtaining carbonate rocks Filling materials and filling degree information in fracture-cavity reservoirs; select sample points with similar filling materials but different filling degrees and locate their geodetic coordinates; determine effective sample points and calculate seismic attribute difference values ​​between effective sample points; The functional relational expression is obtained by the intersection analysis of the difference value of the filling amount of the sandy filling between the points and the difference value of the seismic attribute; the filling degree of the fracture-vuggy reservoir at each effective sample point is calculated, and according to the functional relational expression and the filling degree , to obtain the operational relationship between the seismic attribute difference value and the filling degree of the sandy filling; select the seismic reflection area with beaded reflections on the seismic section, and use the operational relationship to calculate the filling degree of the fracture-vuggy reservoir in the seismic reflection area.

Description

technical field [0001] The invention relates to the technical field of geophysics, in particular to a method for calculating the filling degree of fracture-cavity reservoirs in carbonate rocks in seismic amplitude type attribute exploration. Background technique [0002] Seismic attributes refer to those special measurement values ​​related to the geometry, kinematics and statistical characteristics of seismic waves derived from pre-stack or post-stack seismic data through mathematical transformation. Depending on the algorithm, different attributes have different geological significance, and some attribute values ​​may be good at revealing lithological changes that are not easy to detect, while others can be directly used for hydrocarbon detection. [0003] The research and use of seismic attributes began in the 1970s, and the earliest ones were mainly instantaneous attributes based on amplitude, which were used to directly indicate the distribution of oil and gas and diffe...

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): G01V1/28
Inventor 邢翔张义杰王召明段书府杨海军贾进华
Owner PETROCHINA CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More