摘要
以冷42块深层稠油油藏为例进行了注CO2数值模拟研究,分析了影响注CO2开采效果的各种因素(包括原油粘度、油层深度、含油饱和度、渗透率、孔隙度、油层厚度等油藏参数以及周期注入量、注入速度、注入压力等施工工艺参数),在数值模拟研究的基础上优选该油藏注CO2施工工艺参数,并进行了矿场先导性试验,取得了较理想的开采效果.结果表明,注CO2是冷42块深层稠油油藏提高采收率的有效方法,合适的CO2气源是实施注CO2开采的必要条件.
As a study case, a numerical simulation of CO 2 injection is conducted for the deep heavy_oil reservoir in Leng 42 block, Liaohe oilfield, in which various factors affecting CO 2 injection recovery are analysed, including reservoir parameters (viscosity, depth, oil saturation, permeability, porosity and thickness) and operational parameters (injected volume in cycle, injection rate and injection pressure). Based on the numerical simulation results, the operational parameters are optimized for the heavy_oil reservoir, and a good recovery has been reached in a pilot field test. As a result, the CO 2 injection is an effetive method to enhance recovery from the deep heavy_oil reservoir in Leng 42 block, and an appropriate CO 2 source is necessary for adoption of this method.
出处
《中国海上油气（地质）》
2003年第5期312-316,共5页
China Offshore Oil and Gas(Geology)
基金
国家自然科学基金
