储层精细预测技术在周青庄油田的应用

周青庄油田小断裂发育,构造复杂,油气分布受构造和储层变化的控制。利用等时地层对比技术和基于小波变换的地震相干体技术,研究了断裂分布;综合测井和地震数据进行沉积相反演和沉积相控制下的相控储层预测技术,研究了储层空间展布。应用储层精细预测技术,对周青庄油田古近系S43油组的构造和储层砂体展布规律进行了分析和预测,提出了井位部署意见,钻井后获得了高产工业油流,扩大了含油面积,增加了石油地质储量。

Application of high-precision reservoirs prediction techniques in Zhouqingzhuang Oilfield

Zhouqingzhuang Oilfield was characterized by numerous local faults and complicated structure. The spatial distribution of hydrocarbon accumulation was predominated by the structure and lateral variations of reservoir formations. A new set of high-precision reservoir prediction techniques was applied in the oil and gas pay zones of this oilfield. The prediction techniques include the recognition technique of fault system based on integration of time-stratigraphic correlation and 3D seismic coherence cube processed by wavelet transformation, the sedimentary facies recognition technique by integration of well log and seismic attributes,and the high vitality 3D reservoir attributes outlining based on high precision reservoir prediction controlled by sedimentary lithofacies. The structural features and 3D distributions of sand bed attributes of the Paleogene S3^4 reservoir in Zhouqingzhuang Oilfield were delineated with above techniques. A new well planning project was made. As a result, many new wells acquried high-yielded oil flow. Furthermore, pay zone extension was confirmed,and the oil reserves in place increased by 1.89 million tons.