Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Prospect of Petroleum Exploration in Changshaling Structural Belt of Ying'er Sag in Jiuquan Basin

HAN Yong-ke,LIU Yong-chang,YUE Zhi-zhong,ZHANG Rui-sheng(Research Institute of Exploration and Development,Yumen Oilfield Company,PetroChina,Yumen,Gansu735200,China)  
Changshaling structural belt,located in west slope of lake basin in Ying'er sag,is a large-scale nose-like uplift shaped by a series of complex faults,and the main hydrocarbon-bearing sequence in it is in Chijingbao formation of Lower Cretaceous.The formation of structural belt underwent such three stages as tensional block faulting in the early of Early Cretaceous,com-paction folding of S-N direction in Middle-Late Cretaceous and reconstructing and shaping in Tertiary.Dark shale is well devel-oped in the lower section of Chijingbao formation.Sandstone is mostly found in the upper section of it.Faults are the major channels for connecting source rocks and reservoir rocks.And its primary type of reservoir-cap rock assemblage is source bed in lower forma tion and reservoir bed in upper formations.Many prospecting wells have been penetrated in sandstone layers of Chi -jingbao formation on the structural belt and obtained oil-gas flow.Hence,superior petroleum geological conditions allow this struc-tural belt to become one of key exploratory areas in Yumen oilfield in the near future.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved