学术
准噶尔盆地南缘霍-玛-吐断层活动特征及成藏过程
王兆明[1] 罗晓容[1] 刘楼军[2] 吴鉴[2] 张秉良[3] 陈瑞银[1] 武明辉[1]
[1]中国科学院油气资源研究重点实验室,北京100029 [2]中国石油新疆油田公司勘探开发研究院,新疆乌鲁木齐830011 [3]中国地震局地质研究所,北京100029
摘 要:
以准噶尔盆地南缘霍-玛-吐断层的野外观测为基础，对断层岩显微构造进行了观察。结果表明，该断层大致经历了3次构造运动。结合前人对该区断层岩以及三级河流阶地的年代学研究结果，确定了该断层3次活动的时间分别为早更新世晚期、中更新世晚期至晚更新世早期、晚更新世末期。根据断层岩中发育的包裹体的均一温度、断层带中方解石脉的碳氧同位素测定结果，确定了该断层的最小贯穿深度为6500m，至少断至侏罗系的烃源岩。对准噶尔南缘油气成藏条件的分析结果表明，霍-玛-吐断层向下断至侏罗系烃源岩，并在侏罗系主力烃源岩大量生、排烃之后，经过3次启闭过程，对应了3次成藏过程。断层目前处于封闭状态，可对油气藏形成遮挡。对成藏过程进行的分析表明，霍尔果斯、玛纳斯、吐谷鲁构造的中部成藏系统成藏条件最为有利，是有利的勘探远景区。[著者文摘]
文章出处:
《石油学报》-2006年27卷5期 -28-34页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0253-2697（2006）05-0028-07
Active features of Huo-Ma-Tu fault and hydrocarbon accumulation in the southern Junggar Basin
Wang Zhaoming,Luo Xiaorong,Liu Loujun,Wu Jian,Zhang Bingliang,Chen Ruiyin,Wu Minghui（1. Key Laboratory of Petroleum Resource, Chinese Academy of Sciences, Beijing 100029,China 2. Institute of Exploration and Development ,PetroChina Xinjiang Oil field Company, Urumqi 830011 ,China ~ 3. Institute of Geology, China Seismological Bureau, Beijing 100029, China）
Abstract:
The active features of the Huo-Ma-Tu fault in the southern Junggar Basin were studied by analyzing microstructures of fault rock. According to the former research on fault rock and stream-cut terrace age, the fault opened in history for three times corresponding to three tectonic activities in the late stage of early Pleistocene, from the late stage of middle Pleistocene to the early stage of late Pleistocene and the end of late Pleistocene. The measured homogeneous temperatures of inclusions in fault rock and C and O isotope values in calcite vein demonstrate that the fault extents downward to a depth of 6500 meters at least. That means the source rocks in the Jurassic formation were connected by the fault when the fault opened. The fault is close at present and acts as a sealed condition for oil and gas accumulation. The middle accumulation system of the Huoerguosi,Manasi and Tugulu structures is the best prospective exploration targets.[著者文摘]
Key words:
Junggar Basin; Huo-Ma-Tu fault, microstructure; fault seal, hydrocarbon migration; hydrocarbon accumulation
基金资助:
中国石油天然气集团公司石油科技中青年创新基金（2002-7）资助.本项目研究过程中,中国石油勘探开发研究院何登发教授以及中国地质科学研究院胡道功教授给予了很大的支持与帮助,在此表示最诚挚的诚意!
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