摘要
为了有效开发聚合物驱后近50%的地质储量,需优选一种既有调堵能力又有驱洗能力的驱油剂。聚表剂作为一元驱油剂具有黏度大、乳化能力强和深部调驱作用突出等多重优于聚合物的特性。室内驱油实验聚驱后聚表剂驱油可以再提高采收率9.9%。2008年在大庆油田萨中开发区一类油层聚驱后开展了150 m和106 m 2种注采井距聚表剂驱油现场试验。试验证明,一类油层聚驱后聚表剂驱达到了进一步扩大波及体积、提高洗油能力的目的,聚驱后聚表剂驱提高采收率达到9%以上。
In order to effectively develop near 50% of OOIP after polymer flooding, it is necessary to optimize a oil-flooding agent with the capacities of both adjustment-plugging and sweeping. As a mono-oil-flooding agent, polymer-surfactant agents are characterized by higher viscosity, stronger emulsification, more effective and obvious in- depth profile modification and so forth than the conventional polymers. After the polymer flooding indoor, the EOR of the polymer surfactant can be reached by 9.9%. In 2008, the corresponding field tests with 150 m and 106 m injection-production well spacings were conducted in Type 1 oil reservoirs in Sazhong Development Block of Daqing Oilfield. The tests show that the aims of further enlarging the swept volume and increasing displacing capacity are realized by the new agent after the polymer flooding of the Oil reservoirs, and moreover the enhanced oil recovery of the agent can reach 9% and higher.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2013年第3期118-122,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
中国石油天然气股份有限公司"十一五"科技攻关课题"大庆油田新型化学剂驱油技术进一步提高采收率技术研究"(2008E-1214)
关键词
聚表剂
一类油层
聚驱后
动态特征
驱替效果
大庆油田
polymer surfactant
Type I oil reservoir
after polymer flooding
dynamic performance
displaced effect
Daqing Oilfield
