石油实验地质Issue(1)：81-86,6.DOI:10.11781/sysydz20130114
松辽盆地北部中央坳陷带异常压力条件下地层水化学特征及其成岩响应
Chemical features and diagenesis reactions of formation water under abnormal pressure in central depression of northern Songliao Basin
摘要
Abstract
The pressure system in the central depression of the Songliao Basin was analyzed systematically. A large amount of data about formation water was studied and compared, based on which the ions pattern as well as the dia-genesis reaction of formation water were discussed. It has been concluded that abnormal pressure obviously influences geofluid and diagenesis. Both overpressure and underpressure can increase TDS; however, their influencing mecha-nisms are different. Water type varies in different pressure systems, leading to different diagenesis effects. In over-pressure and normal pressure systems, NaHCO3 and NaCl type water is dominant, and the dissolution of minerals works as the main diagenesis effect. As to underpressure system, CaCl2 type water is dominant, and the main diagene-sis effect is the albitiztion of feldspar.关键词
异常压力/地层水/成岩作用/中央坳陷带/松辽盆地Key words
abnormal pressure/formation water/diagenesis effect/central depression/Songliao Basin分类
能源科技引用本文复制引用
雷振宇,解习农,孟元林,黄卫,杜学斌,肖丽华,孟凡晋,焦金鹤,魏巍..松辽盆地北部中央坳陷带异常压力条件下地层水化学特征及其成岩响应[J].石油实验地质,2013,(1):81-86,6.基金项目
国家自然科学基金(40872076)、中国博士后科学基金第三批特别资助(201003654)和中央高校基本科研业务费专项资金(CUGL100252)联合资助 （40872076）
