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为研究塔里木盆地岩溶储层发育特征及控制因素,通过比较塔北地区和塔中地区储集层岩石孔隙度和渗透率,按储层成因将孔-洞-缝油藏划分为洞穴型储层、构造裂缝型储层、风化裂隙型储层、台缘礁滩相颗粒灰岩溶蚀孔隙型储层和地表残积物裂隙-孔隙(洞)型储层等5种类型.塔里木盆地奥陶系碳酸盐岩油气藏成藏控制因素包括:长期继承性的古隆起和古斜坡;断层和不整合面;次生孔-洞-缝储层的发育和有效盖层结合.分析表明:多源、长期成藏,早期储层改造和后期调整是塔里木盆地油藏的主要特征,并决定了资源结构和油气特性.
In order to study the development characteristics and controlling factors of karst reservoirs in Tarim Basin, by comparing the porosity and permeability of reservoirs in Tarim Basin and Tazhong area, the pore-cave-fractured reservoirs are divided into cave reservoirs , Structural fractured reservoirs, weathered fractured reservoirs, carbonate rock faulted pores reservoirs with carbonate rocks in the marginal reefs, and fissure-pore (pore) reservoirs with surface residuals, etc. The Ordovician carbon in the Tarim Basin The controlling factors of hydrocarbon accumulation in acid salt reservoirs include the paleohigh and the ancient slope with long-term succession, the faults and unconformities, the development and effective caprock combination of secondary pore-cave-seam reservoirs.The analysis shows that the multi-source, Long-term reservoir formation, early reservoir alteration and later adjustment are the main characteristics of the Tarim Basin reservoirs, and determine the resource structure and hydrocarbon characteristics.