摘要
通过对85口密闭取心检查井资料的统计分析,结合多层合采条件下油藏最可能的水驱控制程度研究,认为喇萨杏油田目前井网条件下平均水驱波及体积下限变化在76.5%～81.0%之间,同时对多层非均质条件下,不同厚度油层、不同含水阶段纵向波及系数及其变化的特点的研究表明,单层纵向波及系数在一定条件下可达到90.0%,甚至高于90.0%.事实上单层纵向波及系数差别较大,因此,如何提高水驱波及体积仍是油田开发后期一个值得认真研究的问题.
Through statistical analysis of the data from 85 sealing core drilling inspection wells, combining the study of the most possible water flooding control degree under the condition of multilayer recovery, this paper estimates the average water flooding swept volume lower limit variation range of Salaxing oilfields is 76. 5% -81.0%. At the same time, the study of vertical sweep efficiency and changing characteristics of reservoirs of different thickness and at different water cut stages under the condition of multilayer heterogeneity has shown that single layer vertical sweep efficiency can reach 90. 0% or even over 90% under certain conditions. In fact, single layer vertical sweep efficiencies vary significantly. Therefore , how to enhance water flooding swept volume is still a problem to be solved at the later stage of oil field development.
出处
《大庆石油地质与开发》
CAS
CSCD
2004年第6期45-47,共3页
Petroleum Geology & Oilfield Development in Daqing
关键词
多层非均质
水驱控制程度
水驱波及体积
水淹程度
水洗厚度
检查井
multilayer heterogeneity
water flooding control degree
water flooding swept volume
waterflooding degree, water washing thickness
inspection well
