新疆莫北油田水驱油机理与采出程度分析  

ANALYSES OF THE MECHANISM AND INTERVAL RECOVERY OF WATERFLOODED MOBEI OILFIELD IN XINGJIANG

作　　者：苟燕[1] 高树生[2] 彭永灿[3] 胡志明[2] 王丽影[1] 

机构地区：[1]中国科学院研究生院,北京100190 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [3]新疆油田勘探开发研究院,新疆克拉玛依834000

出　　处：《大庆石油地质与开发》2013年第3期74-78,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项"低渗;特低渗油藏开发技术界限研究"(2008ZX05013-003)资助

摘　　要：针对新疆莫北油田水驱开发的主要特征,即初期水驱开发效果较好、无水产能较高、无水开发时间较短、见水后含水率迅速上升,导致最终采收率较低,一般不超过20%,研究了低渗砂砾岩储层微观孔隙结构分布特征和水驱油渗流规律。结果表明,储层微观非均质性严重是导致其产生这样水驱开发特征的主要影响因素。室内岩心水驱油模拟实验结果与矿场油井开发动态基本一致,证明了油田水驱开发效果受控于储层的微观渗流机理,并有针对性地提出了提高油藏最终采收率的建议。In the light of the main features of the waterflooded Mobei 0ilfield development in Xinjiang, i. e. Much better initial developed effects, pretty higher water-free productivity, rather shorter water-free time, quick rise of breakthrough water cut and rather lower ultimate oil recovery caused （ generally lower than 20% ） , the distribution characteristics of the microscopic pore structure and the waterflooded seepage laws are researched for the low-permeability glutenite reservoirs. The results show the serious reservoir micro-heterogeneity is the main influencing factor of the waterflooding characteristics ; the indoor waterflooding simulating experiment results of the cores is basically the same as the production performances of the oil wells in the field. It suggests that the developed effects are controlled by the micro-seepage mechanism of the reservoirs, and furthermore the corresponding suggestions are proposed for enhancing the ultimate oil recovery of the reservoirs.

关 键 词：水驱开发特征 采出程度 微观孔隙结构 渗流机理 

分 类 号：TE312[石油与天然气工程—油气田开发工程]