【作者】 王波；

【导师】 刘大锰；

【作者基本信息】 中国地质大学（北京） ， 矿产普查与勘探， 2007， 硕士

【摘要】 卫城油田位于东濮凹陷中央隆起带的北部,紧邻濮—卫生油次洼,具有丰富的油源条件。断裂活动形成的一系列断块圈闭是油气聚集的有利场所,是东濮凹陷有利的油气聚集区之一。卫城油田发育卫东、卫西两大断裂体系,内部小断层十分发育,断层多且密集,属于典型的复杂断块油气藏。在卫城构造垒带,由于埋藏较深(2500～3000m),地层倾角较大(30°±),受地层和构造的双重影响,地震资料的品质较差,给在该区的油气勘探带来了很大的困难。针对卫城地区小断层发育,构造复杂的地质特点以及地震资料品质比较差的情况,采取以构造精细研究为重点,在利用三维地震资料为主的基础上,充分应用测井,钻井,高精度地层倾角资料以及生产动态资料,通过三维地震构造精细解释技术及多种方法识别小断层技术,对卫城地区的构造形态、低序级断层的发育及剖面和平面组合规律以及断层的封堵模式进行了深入分析和认识,提高了对该地区小断层、小断块和小油藏的认识。通过岩电关系研究,分析储层物性与含油气性与测井响应之间的关系,绘制各种图版,重新建立了卫城油田从沙一段到沙四段各油层的电性解释标准,从成因上分析了沙三上低电阻油层的形成机理及解释标准。在对卫城地区的地层、构造、储层、油气藏类型以及油气聚集规律认识的基础上,分四个次一级构造带对16个目标区进行了油气勘探目标评价,并优选了有利目标进行评价钻探,取得了较好的效果,将为卫城油田的油气勘探开发工作做出了积极的贡献。更多还原

【Abstract】 Weicheng oil field is situated at the north of central uplift belt of Dongpu depression, adjacent to the Pu-Wei petroleum-generation sub-depression, in which abundant oil and gas resource occurs. It is also the favorable oil & gas accumulation area of Dongpu depression owing to a series of fault traps formed by rift structure. Weicheng oil field developed two fault systems (Weidong and Weixi fault systems), and in which many and dense little faults developed. It belongs to the typical complex fault-block reservoir. In Weicheng horst structure, because of deep buried and high dip angle, and influenced by strata and structure, oil and gas exploration is faced with great difficulty. In view of the geological feature of developed little faults and complex structure and poor seismic data in Weicheng area, based on 3-D seismic data, focused on the research of structure, comprehensive application of logging, drilling, high resolution dip data and production data, through the technology of 3-D structural interpretation and muti-method recognizing fault, tectonic form development of little fault and combination regualrity of flat and section and sealing pattern of fault are deeply analyzed and studied. And the identification level of little fault, little fault-block and little oil reservoir is improved. Through the study of rock-electricity and the relation of reservoir physical property, oiliness and log response, all kinds of charts have been drawn, the log interpretation criterion from Es1-Es4 in Weicheng oil field has been rebuilt, and the generation mechanism and interpretation criterion of low-resistance oil reservoir has been analyzed as well. Finally, based on the comprehensive study of strata, structure, reservoir, type of oil & gas pool and hydrocarbon accumulation, sixteen prospect targets from divided four sub-tectonic zones have been evaluated, and optimized favorable targets have been drilled and good results received, which makes tremendous contribution for the oil & gas exploration and development in Weicheng oil field.更多还原