稠油油藏尿素泡沫蒸汽驱油藏适应性试验  

Experimental evaluation of reservoir applicability of carbamide and foaming agent assisted steam flooding in heavy oil reservoirs

作　　者：李文会[1] 刘鹏程[1] 沈德煌[2] 钱宏图[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油勘探开发研究院提高采收率国家重点实验室,北京100083

出　　处：《中国科技论文》2015年第11期1273-1277,共5页China Sciencepaper

基　　金：中央高校基本科研业务费专项资金资助项目(2652013094);国家重大油气专项课题资助项目(2011ZX05015;2011ZX05016)

摘　　要：针对目前尿素泡沫辅助蒸汽驱对稠油油藏的适应性研究的不足,以河南油田CJ稠油区块储层参数为研究对象,利用尿素泡沫辅助蒸汽驱的三维物理模拟试验,通过控制变量法,研究了油藏压力、含油饱和度、油层厚度和原油黏度对尿素泡沫辅助蒸汽驱采出程度的影响,得出尿素泡沫辅助蒸汽驱适用的范围为:适当的油藏压力(3.5 MPa为最佳),含油饱和度大于51%,较厚的油层(试验中大于15cm),原油黏度小于30Pa·s。利用试验结果对CJ稠油区块某一井组5口井进行尿素泡沫辅助蒸汽驱的先导试验,结果取得了明显的经济效益。室内试验及油田现场应用证明,尿素泡沫辅助蒸汽驱是稠油开发的一项可行性技术。Aiming at the lack of the reservoir applicability of carbamide and foaming agent assisted steam flooding （CFAAS）, a se- ries of CFAAS experiments were conducted with the 3-D physical simulation by control-variable-method to study the effect of res- ervoir pressure, oil saturation, oil layer thickness and oil viscosity on CFAAS recovery, the following conclusions of CFAAS ap- plicable ranges were derived： a proper reservoir pressure （3. 5 MPa is the best）, an oil saturation larger than 51%, a thick oil layer （thicker than 15 cm in the experiments）, an oil viscosity less than 30 Pa · s. Using the experimental results on a heavy oil block, a five spot pattern of CFAAS test was performed and an obvious economic benefit was obtained. Laboratory experiment and field application have proven that CFAAS is a feasibility technology of heavy oil development.

关 键 词：稠油油藏 尿素泡沫辅助蒸汽驱 油藏压力 含油饱和度 油层厚度 原油黏度 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]