地球学报Issue(6)：723-730,8.DOI:10.3975/cagsb.2013.06.09
二连盆地烃源岩层内云质岩油气成藏研究
The Accumulation of Petroleum in the Dolomitic Rock Inside the Source Rock of Erlian Basin
摘要
Abstract
A set of mixed clastic-carbonate deposits are developed in the Lower Cretaceous Erlian Basin, and abundant hydrocarbon shows exist in the dolomitic rocks. According to core observation, microscopic identification, physical analysis and rock thermolysis, the dolomitic rocks is a kind of low permeable-tight reservoir with high porosity and low permeability, which has developed “sweet points” with mold holes and structural corroded fissures generated by dissolution or tectonism. It is concluded that source rocks with high carbonate content are located near the low permeable-tight dolomitic rock reservoirs and lack hydrocarbon-generating abnormal high pressure due to the lower maturity;nevertheless, the high-quality dolomite mudstone (TOC>2%) is conducive to the formation of dissolution pores in the adjacent reservoir and the reduction of oil filling resistance, providing good conditions for oil accumulation of the proximal source type.关键词
云质岩/源内成藏/低渗透-致密储集层/溶蚀作用/下白垩统/二连盆地Key words
dolomitic rock/accumulation inside source rock/low permeable-tight reservoir/dissolution/Lower Cretaceous/Erlian Basin分类
天文与地球科学引用本文复制引用
王会来,高先志,杨德相,李浩,张志遥,王旭..二连盆地烃源岩层内云质岩油气成藏研究[J].地球学报,2013,(6):723-730,8.基金项目
本文由中石油重大研究课题“二连盆地富油凹陷深化勘探潜力与方向研究”(编号:HBYT-YJY-2011-JS-406)资助。 （编号:HBYT-YJY-2011-JS-406）
