Fluvial-delta Sand Types and Its Controling Reservoir Effection of the Second and Third Members

5th Annual International Workshop on Materials Science and Engineering

Liu, Huaye^1

Exploration and Development Research Institute, Daqing Oilfield Company Limited, Daqing

163712, China^1

关键词: Daqing oilfields;    Depositional characteristics;    Depositional system;    Distribution rule;    Exploration and development;    Reservoir sand-bodies;    Sand distribution;    Sedimentary systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/585/1/012085/pdf
DOI  :  10.1088/1757-899X/585/1/012085

来源: IOP

【 摘 要 】

The second and third members of Yaojia Formation is major formation of exploration and development of Daqing oilfield, but the scale of the oilfield that have been found in this formation is small, and the distribution of oil and gas is complicated and scattered. In order to figure out the relationship between the reservoir bed and reservoir. We study on basis of cores, well logs, seismic data, chemical testing and so on, analysis about the styles of sedimentary faces, depositional characteristics and distribution rules, researching the beneficial sand body, sand distribution, sand connectivity and its controlling on reservoir types. By research we find that the delta system is the most important depositional system. It reveals a kind of characteristic which possesses multi-provenance, multi-sedimentary-system and half-circle-faces-belt-distribution. The feature of sand body distribution, width of sand body, thickness of sand body, connectivity of sand body is different for different sedimentary faces, there are five types sand body types. Sand body type is the basis of reservoir zonality, and controlling the four reservoir accumulation zone. Establish the controlling model of reservoir sand body type, is for the theory and reality significance for the exploration of the second and third members of Yaojia Formation.