摘要
渤海S油田下古生界古潜山发育浅海台地相碳酸盐岩储层。依据岩心、薄片观察、地震反演等资料,对渤海S油田下古生界碳酸盐岩储层的沉积环境及成岩作用进行了分析。结果表明下古生界古潜山主要发育白云岩、白云质灰岩,整体属于低孔、低渗储层,储层物性主要受控于沉积类型;花岗岩基底及海平面变化控制了储层发育;白云石化作用及成岩作用为后期储层物性改造提供了有利条件;构造作用产生的断裂和裂缝进一步改善了储层的储集性能。
Lower Paleozoic buried hills in Bohai S oilfield develop shallow platform facies carbonate reservoirs. Based on core, thin section observation and seismic inversion data, the sedimentary environment and diagenesis of Lower Paleozoic carbonate reservoirs in Bohai S oilfield are analyzed in this paper. The results show that the Lower Paleozoic buried hills mainly develop dolomite and dolomitic limestone, which as a whole belongs to low-porosity and low-permeability reservoirs. Reservoir physical properties are mainly controlled by different platform facies deposition types. The development of reservoirs in different platform facies is controlled by the changes of granite basement and sea level. The dolomitization and constructive diagenesis provide favorable conditions for the reservoirs’ later physical transformation. The fractures and cracks caused by the tectonic action further improve the reservoir performance.
作者
李卓
郭诚
周立业
赵汉卿
岳红林
LI Zhuo;GUO Cheng;ZHOU Liye;ZHAO Hanqing;YUE Honglin(Bohai Oil Field Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300452, China)
出处
《广东石油化工学院学报》
2019年第3期5-9,共5页
Journal of Guangdong University of Petrochemical Technology
基金
国家科技重大专项“渤海海域大中型油气田地质特征”(2011ZX05023-006-002)
关键词
台地相
白云岩
下古生界
主控因素
platform facies
dolomite
Lower Palaeozoic
main controlling factors
