准噶尔盆地西北缘红车断裂带油气来源与成藏模式  

Hydrocarbon sources and accumulation modes of Hongche fault zone in the northwestern margin of Junggar Basin

作　　者：赵爱文[1] 王振奇[1] 李伟强[1] 

机构地区：[1]长江大学地球科学学院,湖北武汉430100

出　　处：《西安石油大学学报（自然科学版）》2015年第5期16-22,6-7,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项"西非重点区深水碎屑岩高精度层序地层研究与储层精细评价"(编号:2011ZX05030-003-001);国家自然科学基金青年科学基金项目"黄骅坳陷孔南地区枣III界面的构造属性及其地质意义"(编号:41402111)

摘　　要：在远离源岩区的红车断裂带内二叠系及以上地层均有油气显示。依据原油生物标志化合物色谱、色谱-质谱特征及其包含的参数比值信息可将研究区原油分为2类:A类原油源于沙湾凹陷二叠系烃源岩;B类原油为沙湾凹陷二叠系、白垩系与四棵树凹陷侏罗系三者混源。油气主要有2个运移方向:一是沙湾凹陷油气沿红车断裂带向西运移;二是四棵树凹陷油气越过艾卡断裂向北运移。在此基础上,从多元地质条件及其配置关系出发,总结出3种成藏模式:近源侧向砂体-不整合疏导早期成藏模式、远源混向"Z"字型疏导多期成藏模式、远源混向阶梯状疏导晚期成藏模式。Hydrocarbon was found in the Permian and its upper strata in Hongche fault zone where is away from the source rock.The hydrocarbon in Hongche fault zone is divided into two types according to the chromatography and the chromatography and mass spectrometry characters and the parameter ratios of the biomarkers in saturated hydrocarbon: A type comes from Permian source rock in Shawan Sag; B type is the mixture of the hydrocarbon from Permian and Cretaceous source rock in Shawan Sag and from Jurassic source rock in Sikeshu Sag. There are two hydrocarbon migration directions: one is westward from Shawan Sag along Hongche fault zone,the other is northward from Sikeshu Sag across Aika fault belt. Based on this,according to multivariate geological conditions and their relationships,it is held that there are three hydrocarbon accumulation modes: the early accumulation mode laterally migrating from near source through permeable strata and unconformable surface,the multi-phase accumulation mode ' Z' migrating from distant sources and the late accumulation mode stepwise migrating from distant sources.

关 键 词：油源对比 成藏模式 红车断裂带 准噶尔盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]