龙虎泡油田高台子油层薄砂体地震储层预测

发布时间：2018-05-26 15:57

本文选题：薄层砂体 + 地震储层预测　；参考：《东北石油大学》2015年硕士论文

【摘要】：随着我国陆上油田勘探程度的逐渐加深,油气藏的勘探对象从构造油气藏转变为岩性油气藏,又从岩性油气藏向隐蔽性油气藏勘探目标转变。薄层砂岩,作为一种典型的隐蔽性油气藏,是重要的勘探挖潜对象。但是由于地震勘探纵向分辨能力的限制,薄储层的有效识别是地球物理学家一直努力攻克的课题。本文结合龙虎泡油田高台子薄砂体地震储层预测实例,研究和比对多种地震反演技术在薄砂层地震储层预测方面的优缺点。首先对目前常用的地震反演技术进行综述,并探讨其特点,然后利用目前较为经典的四种地震反演技术对龙虎泡油田高台子油层进行实际地震储层预测研究。主要应用了Jason软件中包含的四个反演计算模块,Rocktrace(叠前稀疏脉冲反演模块),Invertrace-plus(叠后稀疏脉冲反演模块),Rockmod(叠前地质统计学反演模块)和Statmod(叠后地质统计学反演模块)。探讨了这四种地震反演技术的原理和算法,并总结了四者彼此的区别和联系。通过上述四种反演成果的对比和研究,最终确定基于Rockmod反演模块的叠前地质统计学反演技术在实际油田项目的实践中,能够在深度挖掘地震资料所携带的地层弹性参数信息的基础上,拓宽地震反演成果的有效频带,从而对薄砂体进行准确、可靠的储层预测。该反演计算方法能够精确刻画薄层砂岩的空间展布和预测砂岩的分布特征,为龙虎泡油田高台子油层进一步寻找甜点提供有力的技术支持。
[Abstract]:With the gradual deepening of the exploration degree of onshore oil fields in China, the exploration object of oil and gas reservoirs has changed from structural oil and gas reservoirs to lithologic reservoirs, and from lithologic reservoirs to hidden oil and gas reservoirs. Thin sandstone, as a typical hidden reservoir, is an important exploration object. However, due to the limitation of vertical resolution of seismic exploration, the effective identification of thin reservoir is a subject that geophysicists have been trying to solve. Based on the example of seismic reservoir prediction in Gaotaizi thin sand body in Longhubao Oilfield, this paper studies and compares the advantages and disadvantages of various seismic inversion techniques in predicting seismic reservoir of thin sand formation. In this paper, the commonly used seismic inversion techniques are summarized, and their characteristics are discussed. Then the actual seismic reservoir prediction of Gaotaizi reservoir in Longhubao Oilfield is studied by using four classical seismic inversion techniques. In this paper, four inversion calculation modules, including Jason software, are mainly used, which include the prestack sparse pulse inversion module Invertrace-plus (pre-stack sparse pulse inversion module) and the poststack geostatistics inversion module. The principles and algorithms of the four seismic inversion techniques are discussed and their differences and relations are summarized. Through the comparison and study of the above four inversion results, it is determined that the pre-stack geostatistics inversion technology based on Rockmod inversion module is applied in the actual oil field project. On the basis of deeply mining the information of elastic parameters of strata carried by seismic data, the effective frequency band of seismic inversion results can be widened, and the reservoir prediction of thin sand body can be carried out accurately and reliably. The inversion method can accurately describe the spatial distribution of thin sandstone and predict the distribution characteristics of sandstone, and provide strong technical support for further searching for desserts in Gaotaizi reservoir of Longhubao Oilfield.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.4;P618.13

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