Sedimentary facies quantitative recognition method based on lithologic statistics

A technology for quantitative identification and sedimentary facies, applied in the field of quantitative identification of sedimentary facies based on lithological statistics, can solve the problems of slow timeliness, large subjective influence factors, strong dependence on sedimentary facies identification work data, etc., and achieve high efficiency and subjective intervention influence Effects of small, good application prospects

Inactive Publication Date: 2019-02-12
CHINA NAT OFFSHORE OIL CORP +1
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a sedimentary facies quantitative identification method based on lithology statistics th

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
  • Sedimentary facies quantitative recognition method based on lithologic statistics
  • Sedimentary facies quantitative recognition method based on lithologic statistics

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] A detailed description of the method for quantitative identification of sedimentary facies based on lithological statistics of the present invention will be given below in conjunction with embodiments and drawings.

[0024] Such as figure 1 As shown, a method for quantitative identification of sedimentary facies based on lithological statistics of the present invention includes the following steps:

[0025] 1) Data collection: Collect the lithology logging data of exploratory wells and known sedimentary facies data in the work area; among them,

[0026] The lithology logging data of the exploratory well can be directly identified by the drilling site personnel through the rock fragments carried by the drilling fluid back to the ground, and then the depth correction and lithology correction can be completed by the logging curve. Analysis and utilization.

[0027] The lithology logging data of the exploratory well in the work area includes the lithology in the study interval of t...

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 sedimentary facies quantitative recognition method based on lithologic statistics. The method comprises the following steps: data collection: collecting the lithologic logging data of an exploratory well in a work area and known sedimentary facies data; data processing: taking a continuously uninterrupted stratum section corresponding to one sedimentary facies type on a single well as a calculation unit, eliminating the calculation units with the thicknesses of smaller than 20 m, eliminating ineffective rock stratums in each calculation unit, and dividing remaining rock stratums as two types of sandstone and mud rock; parameter calculation: calculating the two parameters, such as sandstone frequency and sandy ground ratio, of each calculation unit respectively; and establishment of a sedimentary facies quantitative recognition plate: according to the parameter calculation result of each calculation unit, carrying out cultellation on a sandstone frequency-sandyground ratio intersection map, and then drawing different sedimentary facies types of recognition areas according to the sedimentary facies types and cultellation positions of the calculation units.According to the method, the work efficiency and accuracy rate of sedimentary facies recognition work are improved greatly; and the method has the advantages of high speed, low cost, high efficiency and little influence on subjective interference.

Description

technical field [0001] The invention relates to a method for quantitative identification of sedimentary facies in the petroleum exploration industry. In particular, it relates to a quantitative identification method of sedimentary facies based on lithological statistics. Background technique [0002] Sedimentary facies analysis is the basic geological work in the field of oil and gas exploration, and it is also an indispensable part of the work for reservoir prediction research. In the current research work, we have mastered the use of sediment analysis method, paleoenvironment restoration method, logging facies analysis method, seismic facies analysis method and other technical methods to divide sedimentary system types and identify sedimentary subfacies and microfacies . These research methods are based on typical facies markers, mainly rely on a large number of analytical tests, core observations and high-quality seismic data, or make subjective judgments based on the g...

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): G01N33/24G01V1/40G01V1/50
CPCG01N33/24G01V1/40G01V1/50G01V2210/6169
Inventor 杜晓峰李晓辉黄晓波宋章强付鑫康荣刘艺萌
Owner CHINA NAT OFFSHORE OIL 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
Try Eureka
PatSnap group products