Abstract
Chang-7 shale is the most important source rock of Mesozoic in Ordos Basin. The characteristics of Chang 7 shale in Longdong area of Ordos Basin are analyzed from the aspects of shale thickness, distribution, sedimentation, petrology and organic geochemistry. The results show that the shale in the study area is mainly distributed in the middle and lower part of Chang-7 member. The shale is mainly composed of deep lake and semi deep lake facies, with a thickness of 10m-40m and good horizontal continuity. The lithofacies are mainly black shale facies, laminated mudstone facies and silty mudstone or silty mudstone facies. The organic matter abundance is high, and the types of organic matter are mainly type I and type II, and they are in the mature evolution stage It has good oil-bearing property. In tight oil accumulation, shale is not only an important material source, but also provides an important reservoir forming power. Only with the existence of shale, can oil form industrial reservoir.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
