野外模拟类比调查对油田地质研究的意义

野外模拟类比调查对油口地质研究用处很大，通过冀中地区潜山油藏碳酸盐储集层的野外模拟调查，并解决了油田内中、上元古界及古生界层序问题；指导了油田地下断层裂缝的分布规律研究；明确了油田潜山构造的北东向断层展布。类比研究潜山古碉溶的发育特点为：晶洞、孔洞顺层分布，大型溶蚀缝、洞多沿断裂分布，是流体运动的主要通道。潜水面附近是水平岩溶发育带，任且古潜山有三个水平溶蚀带。储渗空间类比研究认为，冀中油藏诸集层

Inspiration of Field Analogy Investigation on Oilfield Geologic Study

To make field analogy investigation is very helpful to oilfield geologic studies. The authorsexplained the relationship between the two and how combined with each other following participating infield analogy investigation of buried hill carbonate reservoir in Jizhong area of Renqiu oilfield. This approach has been employed to determine the sequences of Middle--Upper Proterozoic and Paleozoic withinthe field, guide studies of distribution of faults and fractures and make clear about distribution of northeastfault in the buried hill structures. The developed buried hill karst is characterized by the druses and vugsalong beddings, large-scale denudation fracture and vugs along faults, which become the main channels forfluid migration. The horizontal karst zones developed near phreatic level form three horizontal leached beltsin Renqiu buried hill. According to study of the reservoir porosity distribution by analogy approach, it isindicated that fracture-vug-pore type, solution cavity-fracture type and Porotoid type are the major types ofJizhong Petroleum reservoirs.