Carboniferous strata and their oil and gas prospects from Wulungu depression to the north uplift in the Junggar Basin based on magnetotelluric technology

LUO Weifeng; HU Zhifang; LI Guilin; YANG Xiaopeng; HE Lanfang; YANG Yunjian; SUN Qilong; ZHANG Pingchuan; ZHANG Qiyan

doi:10.12029/gc20220515

GEOLOGY IN CHINA > 2022 > 49(5): 1591-1604. > DOI: 10.12029/gc20220515

LUO Weifeng, HU Zhifang, LI Guilin, YANG Xiaopeng, HE Lanfang, YANG Yunjian, SUN Qilong, ZHANG Pingchuan, ZHANG Qiyan. Carboniferous strata and their oil and gas prospects from Wulungu depression to the north uplift in the Junggar Basin based on magnetotelluric technology[J]. GEOLOGY IN CHINA, 2022, 49(5): 1591-1604. DOI: 10.12029/gc20220515

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Carboniferous strata and their oil and gas prospects from Wulungu depression to the north uplift in the Junggar Basin based on magnetotelluric technology

1.
Oil& Gas Survey, China Geological Survey, Beijing 100029, China
2.
College of Earth Sciences, Jilin University, Changchun 130061, Jilin, China
3.
Institute of Geology and Geophysics, CAS, Beijing 100029
4.
Non Seismic Department, BGP Inc., CNPC, Hebei 072751, Zhuozhou, China

Funds:

National Key R & D Plan project 2016YFC060110204

the project of China Geological Survey DD20160170

More Information

Author Bio:
LUO Weifeng, male, 1973, senior engineer, engaged in non-seismic data processing interpretation and method research; E-mail: luoweifeng_08@163.com
Corresponding author:
HU Zhifang, male, in 1966, Ph.D., professor of engineering, engaged in petroleum geological research; E-mail: huzhifangogs@163.com
Received Date: June 30, 2019
Revised Date: March 10, 2020
Available Online: September 25, 2023

Graphical Abstract

Abstract

Abstract

This paper is the result of oil and gas exploration engineering.
Objective
In this paper, the sedimentary and distribution characteristics of Carboniferous strata are studied in the study area from Wulungu Depression to Wulungu North Uplift in Junggar Basin, which provides a basis and reference for the study of geological structure and oil and gas exploration in this area.
Methods
Acquisition of magnetotelluric sounding data, combined with previous gravity, magnetic and electrical seismic data, using two-dimensional conjugate gradient inversion, optimization of electrical stratification technology to obtain the distribution characteristics of Carboniferous strata and fault structure, provides an effective method for the study of Carboniferous strata in igneous rock covered area.
Results
Using magnetotelluric sounding technology combined with gravity, magnetic, electrical and seismic data to carry out comprehensive processing and analysis, the thickness map and burial depth map of the Carboniferous system in the study area were obtained, the interface between the upper and lower Carboniferous strata was preliminarily determined, and the distribution characteristics of the Carboniferous strata were identified. The Suosuoquan sag, Fuhai depression and Zhaheba depression are three subsidence centers of Carboniferous strata, which have good prospects for oil and gas exploration.
Conclsions
In igneous rock covered area, the comprehensive processing and interpretation technology of magnetotelluric sounding and gravity-magnetic-electric-seismic provides effective technical support for the study of Carboniferous strata.

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References (61)

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Carboniferous strata and their oil and gas prospects from Wulungu depression to the north uplift in the Junggar Basin based on magnetotelluric technology