【作者】 高奇东；

【导师】 叶瑛；

【作者基本信息】 浙江大学 ， 海洋地质学， 2010， 硕士

【摘要】 本文研究塔中地区不同类型热液活动所引起的岩溶现象与蚀变现象,及其与储层发育的关系,从中提炼主导性的控制因素,将零散的野外地质现象和经验性总结提升为描述预测储层发育及其空间分布的规律,将为解决塔里木盆地的储层成因类型及成因机理、储层预测提供依据,也将为认识塔中碳酸盐岩油气藏的空间分布规律提供新视野。本文综合采用矿物岩石学、地球化学和同位素示踪技术等手段,以及采用微量元素证据,重点探讨热液白云岩以及与热液白云岩相伴生的热液淋滤灰岩的野外地质特征,并总结归纳奥陶系碳酸盐岩经热液蚀变、淋滤后产物的矿物岩石学和地球化学特征并讨论热液流体的来源与性质,根据热液矿物共生关系、热液活动期次角度,识别了四类矿物组合。观察并总结了存在的热液现象井位的岩芯和薄片资料,并根据对野外剖面热液蚀变的认识和理解,结合ZG8至ZG15区块的勘探实际,对塔里木热液相关储层的控制因素和储层进行了预测,提出了碳酸盐岩热液溶蚀储层预测模型,指出了有利于热液溶蚀型储层发育的因素以及热液岩溶储层的产出层位。更多还原

【Abstract】 This paper abstracted controlling factors by reasch on karst and alteration caused by different types of hydrothermal activities and the connections with reservoir, Summarize the reserior formation prediction and spatial distribution regularities by bits and pieces of geologic phenomenon and the summing-up of experience. Aim to provide evidence of genetic type and the genesis of reservoir and reserior formation prediction and to lend a fresh perspective to realize the spatial distribution regularities of Carbonate in Ordovician in the center of Tarim Basin.Based on Petrologic and geochemical methods、isotope tracing techniques and trace element, discuss the field geological phenomena of hydrothermal dolomite and hydrothermal leaching limestone associated with hydrothermal dolomite, summarize mineral petrologic and geochemical characteristics of hydrothermal product or leacheate in the Ordovician carbonate rocks, discuss the origin and nature of hydrothermal fluids, Identified four types of mineral assemblages from the view of hydrothermal mineral symbiotic relationship and hydrothermal active stages.Observing and analyzing thin sections and cores of wells having hydrothermal alteration, based on awareness and understanding of hydrothermal alteration in the fild section, combined with the actual exploration of ZG8 to ZG15 block, predict reservoir and controlling factors of hydrothermal carbonate Reservoirs in Tarim Basin, propose a model of hydrothermal carbonate reservoirs, Pointed out the favorable facts of hydrothermal-realated reservoirs development and the horizon of hydrothermal Karst carbonate reservoir.更多还原