徐家围子断陷气藏封盖保存能力综合评价  

COMPREHENSIVE EVALUATION FOR THE SEALING-PRESERVING ABILITIES OF THE GAS RESERVOIRS IN XUJIAWEIZI FAULT DEPRESSION

作　　者：王利 庞磊[2] 王丽娜[3] 崔毕 

机构地区：[1]大庆油田海拉尔石油勘探开发指挥部,内蒙古呼伦贝尔021008 [2]大庆油田有限责任公司第二采油厂,黑龙江大庆163461 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [4]中国石油东方地球物理公司辽河物探处,辽宁盘锦124010

出　　处：《大庆石油地质与开发》2012年第6期20-24,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重点基础研究项目（2001CB209104）.

摘　　要：徐家围子断陷气藏盖层厚度、排替压力、气藏压力和天然气黏度是影响徐家围子断陷气藏封盖保存能力的主要因素。根据这4个因素对徐家围子断陷气藏封盖保存能力进行了综合评价，认为徐家围子断陷多为封盖保存能力较差的气藏，封盖保存能力好的气藏数量居中，封盖保存能力中等的气藏最少；封盖保存能力好的气藏储量丰度最高，封盖保存能力中等的气藏储量丰度居中，封盖保存能力较好和差的气藏储量丰度最低。同时指出，封盖保存条件不是形成气藏储量丰度的唯一主控因素，其丰度的高低还受到其他成藏条件的制约。The main factors to influence the abilities of the seal and preservation of the gas reservoirs are caprock thickness, displacement pressure , gas reservoir pressure and gas viscosity in Xujiaweizi Fault Depression. According to the comprehensive analysis of the above four influencing factors, most of the gas reservoirs are characterized by poor seal and preservation abilities, the next is featured by much better capacity, the least possesses medium abili- ty; The reserves abundance of the second kind of gas reservoirs is the highest, followed by the last and the first. At the same time, the conditions of the above ability are pointed out not the only one key controlling factor to enrich the reserves of the gas reservoirs, whether the abundance is higher or not is determined by the other conditions of reservoir formation.

关 键 词：徐家围子断陷 气藏 封盖 保存 综合评价 储量丰度 

分 类 号：TE121[石油与天然气工程—油气勘探]