在莱州湾凹陷垦利10-4油田开展油气成藏条件及成藏模式研究。以地球化学测试、生物标志化合物、镜下薄片观察及钻井、录井等资料分析为基础,研究垦利10-4油田油气来源、储集性能、储盖组合、圈闭特征、输导运聚等成藏条件,结合烃类包裹...在莱州湾凹陷垦利10-4油田开展油气成藏条件及成藏模式研究。以地球化学测试、生物标志化合物、镜下薄片观察及钻井、录井等资料分析为基础,研究垦利10-4油田油气来源、储集性能、储盖组合、圈闭特征、输导运聚等成藏条件,结合烃类包裹体测定和盆地模拟方法厘定油气成藏期并建立油气成藏模式。垦利10-4油田主力产层沙三段由邻近北洼的沙三段和沙四段烃源岩共同供烃,具有近源捕集成藏的条件;储层主要为高孔高渗型辫状河三角洲前缘沉积砂体,沙三段砂岩与上覆沙一、沙二段泥岩沉积段构成了多套有利的储盖组合,且与圈闭形成期及断层活动时间匹配良好。垦利10-4油田为晚期成藏,主成藏期约2.6 Ma B.P.至今,辫状河三角洲前缘砂体与断裂、不整合面在空间上的叠置为油气输导及聚集提供了条件。成藏模式具有“近源捕集,短距离运移,晚期快速充注,深层原位成藏”的特点。展开更多
KL16 (Kenli 16) oilfield is located in Bohai Sea, close to Laizhou Bay depression, with favorable reservoir forming conditions. The lower member of Shahejie Formation (lower sub member of the third member of Shahejie ...KL16 (Kenli 16) oilfield is located in Bohai Sea, close to Laizhou Bay depression, with favorable reservoir forming conditions. The lower member of Shahejie Formation (lower sub member of the third member of Shahejie formation) has shallow burial, complex structural sedimentary evolution, diverse reservoir lithology types, and unclear reservoir distribution laws, which restrict the exploration and development process. Comprehensive use of core, seismic, logging and analytical laboratory data, through the combination of structural recovery and stratigraphic recovery, the micro paleogeomorphology of the lower member of Shahejie Formation in the sedimentary period is finely restored, and the sedimentary system and sedimentary model in the study area are defined. The study shows that during the sedimentary period of the lower member of Shahejie formation, four geomorphic units were developed in the study area: uplift, slope, platform and depression;Under the control of paleogeomorphology, three different sedimentary environments are developed: Braided River Delta is developed in the west, shore shallow lake mixed beach bar is developed in the middle, and fan delta is developed in the south. Based on the analysis of regional geology and sedimentary characteristics, the principal component coupling technology based on the constraint of sedimentary facies belt is optimized for reservoir distribution prediction, and the application effect is good.展开更多
文摘在莱州湾凹陷垦利10-4油田开展油气成藏条件及成藏模式研究。以地球化学测试、生物标志化合物、镜下薄片观察及钻井、录井等资料分析为基础,研究垦利10-4油田油气来源、储集性能、储盖组合、圈闭特征、输导运聚等成藏条件,结合烃类包裹体测定和盆地模拟方法厘定油气成藏期并建立油气成藏模式。垦利10-4油田主力产层沙三段由邻近北洼的沙三段和沙四段烃源岩共同供烃,具有近源捕集成藏的条件;储层主要为高孔高渗型辫状河三角洲前缘沉积砂体,沙三段砂岩与上覆沙一、沙二段泥岩沉积段构成了多套有利的储盖组合,且与圈闭形成期及断层活动时间匹配良好。垦利10-4油田为晚期成藏,主成藏期约2.6 Ma B.P.至今,辫状河三角洲前缘砂体与断裂、不整合面在空间上的叠置为油气输导及聚集提供了条件。成藏模式具有“近源捕集,短距离运移,晚期快速充注,深层原位成藏”的特点。
文摘KL16 (Kenli 16) oilfield is located in Bohai Sea, close to Laizhou Bay depression, with favorable reservoir forming conditions. The lower member of Shahejie Formation (lower sub member of the third member of Shahejie formation) has shallow burial, complex structural sedimentary evolution, diverse reservoir lithology types, and unclear reservoir distribution laws, which restrict the exploration and development process. Comprehensive use of core, seismic, logging and analytical laboratory data, through the combination of structural recovery and stratigraphic recovery, the micro paleogeomorphology of the lower member of Shahejie Formation in the sedimentary period is finely restored, and the sedimentary system and sedimentary model in the study area are defined. The study shows that during the sedimentary period of the lower member of Shahejie formation, four geomorphic units were developed in the study area: uplift, slope, platform and depression;Under the control of paleogeomorphology, three different sedimentary environments are developed: Braided River Delta is developed in the west, shore shallow lake mixed beach bar is developed in the middle, and fan delta is developed in the south. Based on the analysis of regional geology and sedimentary characteristics, the principal component coupling technology based on the constraint of sedimentary facies belt is optimized for reservoir distribution prediction, and the application effect is good.
