Print this pageThe Relationship Between Oil-Gas Reservoir Formation And The Accommodation Space Changes of Songliao Basin, China
By
Shiqi Zhang1
(1) University of Petroleum, East China, Dongying, Shandong, China
Using upper Jurassic-lower Cretaceous of Songliao basin as research target,
the relationship between the accommodation space changes and oil-gas reservoir
of the lacustrine basin were studied by the ways of comprehensive explanation of
geochemical, drilling and core data. During the deposition of the first member
of Qingshankou Formation and the first-second members of Nenjiang Formation,
increasing tremendously of the accommodation space resulted in wide distribution
of good source rock in which the amount of organic carbon was high and the type
of organic matter is well. The communication space changes caused by tectonic
and climatic period changes controlled the characteristics of
source-reservoir-
seal
combination, and formed some types of combinations such as
lower source - middle reservoir - upper seal
combination et al.. The
communication space changes controlled the evolution of sequence and the
distribution of system tracts, and it is best for oil and gas accommodation that
base fan and slope fan of lowstand system tracts.