- 责任者：Li Dechun (Integrated Geophysical and Geochemical Service ; BGP ; Zhuozhou 072751 ; China) ; Dong Weibin
- 刊名：Xinjiang Geology
- 出版年：2013
- 卷期：31(2)
- 关键词：油气勘探 ; petroleum exploration ; 电阻率 ; resistivity ; 地震勘探 ; seismic exploration ; 新疆 ; Xinjiang
- 页码：p.219-222
- 图表：4 illus., 4 refs.
- 分类号：1600
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
In STH basin of western China develops Carboniferous formations with marine facies in deep underground and in the formations exists volcanic rock widely. Traditional prospecting ways give no definite description about the inner structures and resource rock which is mainly composed of clastic rock. Available data in the area shows that Carboniferous igneous rock shows apparently higher resistivity than sandslime, so it is possible to detect igneous mass by making use of the resistivity contrast. In recent years, controlled source techniques are greatly improved on acquisition meters and methods.2D inversion of controlled source EM data with seismic data as constraint increases sounding depth and improves resolution of deep structure interpretation. With the progress, igneous mass in STH basin is described more detailed. The project reveals that between the upper volcanics and the lower one exists a low-resistivity clastic formation C2h within the upper Carboniferous system. The formation is finally delineated. Well M20 is drilled subsequently, and the drilling result discovers that the C2h formation is a set of carbonaceous mudstone and grey basalt, which is hydrocarbon source rock with the major content of clastic rock. Following well M20, another well M36 is designed based on the interpretation of the project and drilled. This well produces commercial petroleum. This project made progress in the prospecting of low resistivity source rock within Carboniferous formation.