Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Reservoir classification method based on rock electricity parameters

A classification method, rock-electric technology, applied in electric/magnetic exploration, acoustic re-radiation, radio wave measurement system, etc., can solve problems such as difficulty in classification and evaluation of pore-structured sandstone reservoirs

Active Publication Date: 2014-10-15
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF2 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] In order to solve the problem of difficult classification and evaluation of sandstone reservoirs with complex pore structures in the prior art, the embodiment of the present invention provides a reservoir classification method based on rock-electric parameters

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
  • Reservoir classification method based on rock electricity parameters
  • Reservoir classification method based on rock electricity parameters
  • Reservoir classification method based on rock electricity parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0081] The embodiment of the present invention provides a reservoir classification method based on rock-electricity parameters. On the basis of the derivation of the existing rock-electricity experimental theoretical model, the theoretical range and range of theoretical values ​​of rock-electricity experimental data under different pore structures are formed. Finally, the reservoir pore structure partitions on the F-Ф chart of lithoelectric data are formed. On this basis, using the logging data widely collected in oilfield production, combined with rock electrical experiment data and mercury intrusion capillary pressure curve data, the rock electrical method quantitative classification evaluation basis for common complex sandstone reser...

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 reservoir classification method based on rock electricity parameters, and belongs to the field of hydrocarbon reservoir evaluation. The method is based on rock electricity experiment theoretical model deduction, a theoretical value range and a value trend of rock electricity experiment data of reservoirs under different pore structures are formed, and reservoir pore structure subareas on a rock electricity data F-phi plate are formed; and corresponding electrical logging data are utilized in combination with rock electricity experiment data and mercury injection capillary pressure curve data to determine rock electricity method quantitative classifications, and the method at least includes: Step 1) establishing a rock electricity method classification bases; Step 2) forming a classification plate; Step 3) establishing a quantitative classification evaluation basis; and Step 4) determining classification grades of the reservoirs. According to the reservoir classification method based on rock electricity parameters in the invention, by checking distribution of the rock electricity data on the F-phi plate and discovering that rock samples of reservoirs of different classes fall on distinguishable different subareas on the F-phi plate, continuous evaluation knowledge can be provided, and a verification effect is good.

Description

technical field [0001] The invention relates to the field of classification of oil and gas reservoirs, in particular to a method for classification of reservoirs based on rock-electric parameters. Background technique [0002] As an important means of petrophysical research, lithoelectric experiment mainly calculates the four key parameters in Archie's formula by measuring the parameters of rock porosity, resistivity and saturation, and then accurately calculates the formation oil and gas saturation. [0003] Complicated lithology (such as glutenite, etc.), low porosity and low permeability, and fractured reservoirs all have more complex pore structures than conventional sandstone reservoirs. This complex pore structure is manifested in the difference in seepage capacity of rocks under the same porosity conditions significantly. That is to say, the reservoir has complex microscopic anisotropy under the background of macroscopic heterogeneity. In the current stratum evaluat...

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): G01V3/00G01V3/38
CPCY02A90/30
Inventor 程道解万金彬李东平王娟龚守捍白松涛冯俊贵田扬
Owner BC P INC CHINA NAT PETROLEUM 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
Eureka Blog
Learn More
PatSnap group products