四川盆地高含硫气藏地层水地化特征分析  

GEOCHEMICAL CHARACTERISTICS OF FORMATION WATER IN HIGH H_2S GAS RESERVOIRS,SICHUAN BASIN

作　　者：关云梅[1] 王兰生[1] 张鉴[1] 施雨华[1] 张琦[1] 

机构地区：[1]中国石油西南油气田分公司勘探开发研究院

出　　处：《天然气勘探与开发》2011年第3期21-23,87,共3页Natural Gas Exploration and Development

摘　　要：四川盆地嘉陵江组、川东北飞仙关组部分构造储层未裸露于地表,油气保存条件好,气藏天然气产量高,但是气藏地层水却显示出水型、脱硫系数、变异系数等地化参数异常的特征,分析原因是储层的膏盐溶滤使地层水中SO42-含量高所致。It is found that part reservoirs from both Jialingjiang Formation in Sichuan Basin and Feixianguan Formation in northeastern Sichuan Basin are not exposed.So,hydrocarbon conservation is good and gas yield is high.But formation water from these gas reservoirs appears a water-produced type.In addition,it is featured by some abnormal geochemical behaviors of desulfurization and variation coefficients,resulted from gypsum leaching bringing about SO42-rich in formation water.

关 键 词：四川盆地 地层水 地球化学特征 膏盐层 嘉陵江组 飞仙关组 

分 类 号：P618.13[天文地球—矿床学]