摘要
准噶尔盆地是中国的一个大型含油气盆地,其油气的成因与勘探目标有着密切的关系。根据中地壳低速层(vP≤6.1km/s),乌尔禾沥青的Pb、Sr、Nd同位素组成及太平洋型同位素地球化学资料的分析表明,克拉玛依油田及克拉玛依—乌尔禾断裂带的油气为无机(非生物)成因。过去几十年,在克拉玛依—乌尔禾断裂带至坳陷中心的斜坡带的勘探失败,说明油气可能并不是来自二叠系有机质的有机成因类型。由此提出2个油气勘探目标:①玛纳斯凸起—莫索湾地区;②石西凹陷。
The Junggar Basin is a large petroliferous basin in China, the petroleum origin and exploration targets are closely related. According to the results of analyzing low-velocity layer in the mid-crust (v_p≤6.1km/s), Pb, Sr, Nd isotopic compositions of Wu'erhe bitumen and isotopic geochemical data of Pacific type, it is shown that the crude oil and gas in Karamay oilfield and around the Karamay-Wu'erhe fault belt are inorganic origin (abiogenic). The failure of exploration practice on the slope belts between Karamay-Wu'erhe fault belt and central depression during past several decades did not support petroleum organic origin from Permian organic matter. And then it is proposed out here that the petroleum exploration targets should be Manas Uprift-Mosuowan area and Shixi depression.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2006年第10期37-41,共5页
Natural Gas Industry
关键词
准噶尔盆地
克拉玛依油田
深部
低速层
同位素
地球化学
勘探区
Junggar Basin, Karamay oilfield, deep crust, low-velocity layer, isotope, geochemistry, exploration area
