摘要
针对大港油田孔南地区高温、高盐、中低渗、稠油等制约化学驱提高采收率的瓶颈技术问题,以官109-1断块枣Ⅴ油组为目标油藏,在优选适合缔合聚合物和表面活性剂基础上,进行聚合物-表面活性剂二元驱技术室内实验和现场应用研究。通过室内实验优选,缔合聚合物AP-P7和表面活性剂BHS-01二元体系溶液与常规体系相比,具有较好的耐温抗盐性,拓展了常规二元驱适用油藏的温度和矿化度范围;缔合聚合物经过岩心剪切后仍能够有效建立阻力系数和残余阻力系数;通过岩心驱替实验,体系能有效提高稠油油藏的采收率,拓宽了聚合物驱适用的原油黏度范围;矿场单井试注后,注入井注入压力和启动压力升高,纵向吸水剖面得到改善,说明该体系在高温高盐条件下仍能保持较高黏度,能够有效改善水油流度比,效果明显。
According to the technical bottleneck problems of high-temperature, high-salt, middle-low permea-bility and heavy oil, which has become the constraints to enhance oil recovery, the lab and field experiment researches of polymer-surfactant flooding technology were carried out based on the oil formation of V in G109 - 1 reservoir after the polymer and surfactant systems were optimized. Through to the laboratory optimization, the association polymer AP - P7 and the surfactant BHS -01 system had better temperature-resistance and salt-re-sistance than the regular system, and this result extended the temperature and salinity scope of application ; The association polymer could build the resistance coefficient and residual resistance factor effectively after the core shearing. According to the core displacement experiments, this system could enhance the heavy oil recovery factor, which extended the oil viscosity scope of application. After the well injection test in the field, the start-ing and the injecting pressure increased and the longitudinal profile-log monitoring was improved, which could demonstrate that this system could reduce the mobility ratio of oil to water obviously.
出处
《现代地质》
CAS
CSCD
北大核心
2017年第4期814-821,共8页
Geoscience
基金
国家科技重大专项"稠油
碳酸盐岩和致密油藏开发主体技术与应用潜力"(2016ZX05016-006)
关键词
高温高盐高黏油藏
缔合聚合物
岩心剪切
岩心驱替实验
单井试注
high-temperature, high-salinity and high-viscosity reservoir
association polymer
core shearing
core displacement experiment
well injection test
