碳酸盐岩风化岩溶区岩溶相控建模方法研究  

THE STUDY ON KARST FACIES-CONTROLLED METHOD IN CARBONATE WEATHERING KARST AREA

作　　者：张慧涛[1] 汪彦[1] 

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《新疆石油天然气》2015年第3期10-14,52,共6页Xinjiang Oil & Gas

摘　　要：塔河油田碳酸盐岩缝洞型储层空间结构复杂,非均质性极强。准确刻画储集体的结构及三维空间展布是油藏开发的关键。在应用岩溶相控和多点地质统计学基础上,结合岩溶相综合控制因子和振幅包络的一阶导数体,建立储层相模型。在岩溶相控制下,采用协序贯高斯模拟方法建立孔隙度模型。在确定性方法建立大尺度裂缝模型、随机性方法建立小尺度裂缝模型的基础上,进行等效参数计算,得出裂缝孔隙度模型。融合储层相和裂缝相模型,最终得到储集体的三维空间展布情况。结果表明,在碳酸盐岩缝洞型油藏中,岩溶相控建模方法能更好地忠实于实际地质体,模型更符合实际地质情况。The Ordovician fractured-vuggy carbonate reservoirs in Tahe oilfield have the complex space structure and very strong heterogeneity. Characterizing the reservoir's structure and three-dimensional distribution is the key for the Reservoir Development. Based on the Karst facies-controlled model and multi-point geostatistical( MPS) method,reservoir facies model is established by combing with the integrated control factor of Karst facies and the first derivative of amplitude envelope in this paper. In the control of Karst facies,porosity model is established by using sequential gaussian simulation method.The Crack model is established by combining with the large-scale model which is established by the deterministic method and the small scale model which is obtained by stochastic method. After the Crack model is established,the porosity model of fracture is obtained by Calculationing of equivalent parameters.The facies model and fracture model are Integrated in the end.The results shows that the Karst facies-controlled method is better be faithful to the actual geological body in the fracture-cave carbonate reservoir.The model is more consistent with the actual geological conditions.

关 键 词：多点地质统计学 岩溶相控 蚂蚁追踪技术 裂缝模型 塔河油田 

分 类 号：TE122.2[石油与天然气工程—油气勘探]