Coupling relationship between reservoir diagenesis and hydrocarbon accumulation in Lower Cretaceous Yingcheng Formation of Dongling, Changling fault depression,Songliao Basin, Northeast China

被引：1
作者：
Yun-qian Lu [1 ,2 ,3 ]
You-lu Jiang [3 ]
Wei Wang [3 ]
Jian-feng Du [4 ]
Jing-dong Liu [3 ]
机构：
[1] Guangzhou Marine Geological Survey, China Geological Survey, Ministry of Natural Resources
[2] Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
[3] School of Geosciences, China University of Petroleum
[4] Sinopec Northeast Oil-Gas Branch Company
来源：
China Geology | 2020年 / 3卷 / 02期
关键词：
D O I：
暂无
中图分类号：
P618.13 [石油、天然气];
学科分类号：
0709 ; 081803 ;
摘要：
The Lower Cretaceous Yingcheng Formation in the southern Songliao Basin is the typical tight oil sandstone in China. In order to better predict the petrophysical properties of the tight sandstone reservoirs in the Lower Cretaceous Yingcheng Formation, Songliao Basin, Northeast China, the diagenesis and porosity evolution was investigated using a suite of petrographic and geochemical techniques including thin section analysis, scanning electron microscopy, mercury intrusion and fluid inclusion analysis, on a set of selected tight sandstone samples. Combined with the histories of burial evolution, organic matter thermal evolution and hydrocarbon charge, the matching relationship between reservoir porosity evolution and hydrocarbon accumulation history is analyzed. The result showed that the tight sandstone reservoirs characterized of being controlled by deposition, predominated by compaction, improved by dissolution and enhanced by cementation. The hydrocarbon accumulation period was investigated using a suite of hydrocarbon generation and expulsion history, microfluorescence determination and temperature measurement technology. According to the homogenization temperature of the inclusions and the history of burial evolution, Yingcheng Formation has mainly two phases hydrocarbon accumulation. The first phase of oil and gas is charged before the reservoir is tightened, the oil and gas generated by Shahezi source rocks enter the sand body of Yingcheng Formation, influenced by the carrying capability of sand conducting layer, oil and gas is mainly conducted by the better properties and higher connectivity sand body and enriched in the east, which belongs to the type of densification after hydrocarbon accumulation.The second phase of oil and gas charge after densification, which belongs to the type of densification before the hydrocarbon accumulation.
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页码：247 / 261
页数：15
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