论文部分内容阅读
利用泥岩声波时差曲线、等效深度法及盆地模拟方法,综合录井、测井、试油等资料,对渤海湾盆地沾化凹陷四扣地区沙四段礁灰岩油藏成藏动力进行了探讨,研究表明:研究区沙四段异常高压在纵向上主要发育于主力烃源岩层系中,礁灰岩层段异常高压则相对不发育,平面上洼陷区异常高压发育,而周围构造高部位异常高压则相对不发育;主要成藏期的地层压力分布具有继承性发育的特征,表现为明显的“构造控压”特征,从主力生烃洼陷区向礁灰岩分布的周围构造高部位,异常压力逐渐降低。通过成藏动力的研究,明确成藏过程中礁灰岩层位地层压力的展布特征,深化了对礁灰岩油藏成藏机理的认识。
Using the mudstone acoustic time-difference curve, the equivalent depth method and the basin simulation method, comprehensively logging, well logging and oil testing data, the reservoir forming dynamics of reef limestone reservoirs in Sha 4 Member of Siwu area, Zhanhua Depression, Bohai Bay Basin The research indicates that the abnormal pressure in the fourth member of Shahejie formation in the study area is mainly developed in the main hydrocarbon source rock strata in the longitudinal direction while the abnormal high pressure in the reef limestone layer is relatively undeveloped. The abnormal high pressure in the depression area in the plane is developed. The abnormal pressure is relatively undeveloped. The stratigraphic pressure distribution in the main reservoir-forming period has the characteristics of inherited development and shows obvious features of “structural pressure control”. From the main hydrocarbon-generating depressions to the surrounding distribution of reef limestone High parts, abnormal pressure gradually decreased. Based on the study of reservoir formation dynamics, the distribution characteristics of formation pressure in reef limestone reservoirs during the process of hydrocarbon accumulation are clarified, which deepens the understanding of the mechanism of hydrocarbon accumulation in reef limestone reservoirs.