川东北地区二叠-侏罗系地层水化学特征及其与油气聚集的关系  

The Hydrogeochemical Characteristic of Permian Period-the Jurassic System Layer and Its Relationship with Oil-gas Accumulation in the Northeast of Sichuan Province

作　　者：贾霍甫[1] 徐思煌[1] 

机构地区：[1]中国地质大学研究生院,湖北武汉430074

出　　处：《重庆科技学院学报（自然科学版）》2005年第2期12-15,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：对川东北地区二叠系-侏罗系地层水研究发现,其具有浓度大、正变质作用强的特点,成因属于沉积变质水。川东北油气保存的水文地质条件总体上较好,矿化度、变质系数和脱硫系数等有着很好的一致性。提出有利于油气保存的矿化度的下限值为35gl,变质系数rNa+rCl-为1,脱硫系数rSO2-4×102rCl-为5,水型一般为CaCl2型,在膏岩区为Na2SO4型。Through researching the water of Permian Period-the Jurassic System in the northeast of Sichuan Province, we find that it has the characteristics of high concentration, strong positive metamorphism and sedimentary modified water. Over here, the hydrological geologic conditions of oil-gas storage are very good because of the uniformity of the mineralization, metamorphism coefficient and Desulfurization coefficient. In order to take oil-gas storage well, the minimum of the mineralization should be 35g/1, metamorphism coefficient should be 1, desulfurization should be 5 or 6, water type should be CaCl2.

关 键 词：地层水 水化学 油气聚集 水文地质 

分 类 号：TE122[石油与天然气工程—油气勘探]