中国东北地区幔源-岩浆CO_2赋存的地质记录  

Geology record of mantle-derived magmatogenetic CO_2 gas in the northeastern China

作　　者：曲希玉[1] 刘立[1] 高玉巧[2] 刘娜[1] 李福来[1] 刘红艳[3] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]南京大学内生金属矿床成矿机制研究国家重点实验室,江苏南京210093 [3]吉林大学测试科学实验中心,吉林长春130061

出　　处：《石油学报》2010年第1期61-67,共7页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.40672074和No.40372060);教育部博士点基金项目(20070183137)联合资助

摘　　要：在松辽盆地南部及海拉尔盆地CO2气藏和片钠铝石研究的基础上,根据中国东北地区CO2气藏中CO2的碳同位素、氦同位素,各盆地片钠铝石的碳、氧同位素的数据,以及CO2气藏(苗)与断裂和火山岩的关系,对中国东北地区CO2的成因及其与片钠铝石的关系进行了研究。分析认为中国东北地区的CO2绝大多数为幔源-岩浆成因,且形成片钠铝石的CO2与幔源-岩浆CO2同源;片钠铝石是CO2的"示踪矿物",记录了地质历史时期CO2的聚集;地层水和原油中溶有大量的无机成因CO2,经CO2改造的地层水具有高矿化度及Na+、K+、HCO3-、CO32-浓度高的特点。依据片钠铝石与CO2的关系,地层水中离子浓度的变化,以及原油中溶解大量CO2的事实,总结了中国东北地区幔源-岩浆CO2赋存的地质记录。The relationship between the genesis of CO2 and dawsonite in the northeastern China was studied on the base of the research of CO2 gas reservoirs and dawsonite in the south of Songliao Basin and Hailaer Basin,with the help of the analysis of carbon and helium isotopes of CO2 gas reservoirs and carbon-oxygen isotopes of dawsonite in each basin respectively,and combining with the relationship between CO2 gas reservoirs and fault,volcanic rocks.It was found that most of CO2 in the northeastern China had a mantle-derived magmatic genesis and was homology with the CO2 forming the dawsonite.As the trace mineral for CO2,dawsonite can register the accumulation of CO2 during geological history.High concentration of Na^＋,K^＋,HCO3^- and CO32^- were displayed owing to the modification of CO2 in formation water and crude oil.The geology record of mantle-derived magmatogenetic CO2 was built according to the relationship between dawsonite and CO2,the changing on the concentration of the ion in formation water and the abundant CO2 dissolving in crude oil.

关 键 词：中国东北地区 幔源-岩浆CO2 片钠铝石 地层水 原油 

分 类 号：TE112.111[石油与天然气工程—油气勘探]