Abstract
Beier Sag is the main oil-rich sag in Hailar District basin. This paper analyzes the structure, source rock, relationship of source and reservoir, and deeply studies the reservoir-forming characteristics of Beidong sub-sag in Beier Sag. The study shows that the structure pattern of the bei-dong sub-sag in Beier Sag is characterized by “concave and uplifted interchangeably”, the present basin pattern is quite different from the prototype basin, develops northeast-east and north-east fault depressions in the Nantun formation during the sedimentary period. After three-stage tectonic transformation, it changes into the north-northeast direction, develops the palaeo-structure and has the geological conditions of reservoir formation. The dark mudstone of Nantun formation in Beidong sub-sag is thick, the abundance of organic matter is higher, and Type II is the main type; it is the medium-good source rocks with favorable conditions for reservoir formation. There are three sets of reservoir-forming assemblages in Beidong sub-sag, forming multi-type reservoirs. The succession of palaeo-structure is the main controlling factor of oil and gas accumulation, the favorable oil-bearing structures, such as reverse fault block and mid-concave uplift, are developed.
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.
