Unlock instant, AI-driven research and patent intelligence for your innovation.

A Synthetic Method of Log Data and Depth Domain Seismic Profile Based on Forward and Inversion

A technology of logging data and depth domain, which is applied in the field of forward and inversion-based logging data and depth domain seismic profile synthesis, which can solve problems such as events not in the same set of formations, increased development risks, and inability to guarantee interpretation accuracy, etc. , to achieve the effect of improving reliability and accuracy

Active Publication Date: 2016-09-07
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Due to the difference in logging and seismic velocities, comprehensive interpretation of seismic geology in the depth domain may lead to a different set of formations from the drilling layer and the event axis on the seismic data. If the horizon calibration is not accurate, the interpretation accuracy cannot be guaranteed, which increases the development risk

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
  • A Synthetic Method of Log Data and Depth Domain Seismic Profile Based on Forward and Inversion
  • A Synthetic Method of Log Data and Depth Domain Seismic Profile Based on Forward and Inversion
  • A Synthetic Method of Log Data and Depth Domain Seismic Profile Based on Forward and Inversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention utilizes the revised reflection coefficient calculation formula to obtain the reflection coefficient, and makes the depth domain synthetic record through forward and inversion of the wave equation, and obtains the depth domain seismic profile synthesis method consistent with the side-well seismic trace in the depth migration profile through multiple iterations .

[0034] The specific embodiment of the present invention is:

[0035] 1) Under the constraints of the measured lithological interface depth, the measured lithological velocity is discretized into the low-frequency background velocity in the depth domain (v l (z i ), i=1, nz).

[0036] For rock samples of different lithologies obtained by drilling, the measured rock velocity, under the constraints of the lithology interface in the depth domain, is discretized into the low-frequency background velocity in the depth domain (v l (z i ), i=1, nz), see figure 1 .

[0037] 2) Under the cons...

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 is a method for synthesizing logging data and depth domain seismic sections based on forward and inversion in seismic data processing and geological interpretation of seismic exploration technology. Using the acoustic logging data and lithological velocity data measured in the field, the depth domain synthetic record is produced by the forward and inversion method of the wave equation, and the depth domain synthetic record is used for the seismic geological horizon calibration of the pre-stack depth migration seismic profile to determine the seismic profile Geological horizons of the middle reflection event. The invention is suitable for seismic geological interpretation of complex structures in the depth domain, is a key method for fine structure interpretation, and can improve the correctness of structural interpretation in the depth domain.

Description

technical field [0001] The invention relates to seismic exploration technology, which is a method for synthesizing logging data and depth-domain seismic sections based on forward and inversion in seismic data processing and geological interpretation. Background technique [0002] Reflected wave seismic exploration excites seismic waves on the ground and uses geophones to receive reflection information from underground geological bodies. Seismic data that can be used for interpretation is obtained by processing seismic data on the obtained reflection information. With the development of seismic data processing technology, the results of seismic data processing have shifted from time-domain data to depth-domain data. Seismic geological horizon calibration and fine structure interpretation of time-domain seismic data are relatively mature technologies, but there is no widely recognized method at home and abroad to use well logging data to make depth-domain synthetic records to...

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 刘超颖田振平白雪莲黄娜
Owner BC P INC CHINA NAT PETROLEUM CORP