西斜坡区油型气成藏与分布的主控因素及有利勘探区预测  

Accumulation conditions of oil-type gas and forecast of favorable exploration areas in West slope region

作　　者：赵荣[1] 梅丽[2] 陈峰[3] 许洪东[4] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318 [2]保定金融专科学校,河北保定071009 [3]大庆油田有限责任公司第四采油厂,黑龙江大庆163511 [4]中国矿业大学(北京)资源与安全工程学院

出　　处：《大庆石油学院学报》2006年第6期5-8,共4页Journal of Daqing Petroleum Institute

基　　金：国家"973"重点基础研究项目(2001CB209104)

摘　　要：通过研究西斜坡区油型气藏分布与各成藏条件的叠合关系,得到西斜坡区油型气成藏与分布主要受气源供给条件、西运通道条件和圈闭条件的控制.充足的游离相和油溶相油气是油型气成藏的物质基础,良好的输导通道是油型气在西斜坡区聚集成藏的桥梁,位于运移路径上的圈闭是油型气成藏的关键.油型气成藏具有沿砂体侧向长距离运移岩性上倾尖灭、构造及构造-岩性、断层遮挡和透镜体聚集成藏4种模式.综合分析可以得到泰康隆起带及其周边附近是油型气聚集成藏的有利地区,其内位于油气运移路径上的各种类型圈闭应是下一步油型气勘探的有利目标.According to characteristics of gas carbon isotope,there must be a great deal of oil-type gas in west slope region,which is distributed in Taikang uplift zone.Through the relation between distribution of oil-type gas and each accumulation condition,we hold that that accumulation and distribution of oil-type gas are controlled supplying condition of gas sourcerock,pathway condition of gas migration form Qijia-Gulong sag to west slope region and trap condition.Adequate gas oil-type gas in free phase and oil-dissolving phase is the basis of oil-type gas accumulation.Good migrating pathways are the bridge of oil-type gas accumulation in west slope region.Traps in migration route are the key to oil-type gas accumulation.There are four oil-type gas migration and accumulation models of lithology updig pinch out,structure and structure lithology,fault seal and lenticular body.Taikang uplift and its surroundings are considered to be the most favorable areas for oil-type gas accumulation through comprehensive analysis.Each trap on the oil and gas migration pathway is considered to be the most favorable goal of gas exploration.

关 键 词：西斜坡区 油型气 成藏条件 有利勘探区 

分 类 号：TE122.2[石油与天然气工程—油气勘探]