摘要
在海上高孔高渗油藏中实施热采,汽窜是必须面临和解决的问题,结合海上高速高效开发的要求,开展了高温调剂泡沫体系的研究。通过对高温起泡剂的静态性能和动态性能进行实验评价,优化最佳的起泡剂浓度,结合数值模拟方法进行参数优化。研究结果表明:优选后的高温起泡剂在190℃温度下起泡体积≥180 m L,半衰期≥420 s,阻力因子≥20;300℃恒温12 h后发泡体积、半衰期、阻力因子等指标均保持在原来的90%以上;优选后的起泡剂浓度为0.3%,可提高驱替效率14.49%;段塞注入方式可提高驱油效率18.25%。在现场使用该项工艺后,现场注入压力升高1.5 MPa左右,生产未受注热井影响。
During thermal recovery from marine oil reservoirs with high porosity and high permeability, steam channeling isa problem which must be confronted and addressed. In view of the reservoir development with high speed and high efficiency, it isobjectively required that the technology should be stable and reliable. Through experiment and evaluation on static performance anddynamic performance of high temperature foaming agent, the concentration of forming agent was optimized, and the parameters wereoptimized by way of numerical simulation method. The research on optimized high-temperature foaming agent shows that the foamingvolume at 190℃ was ≥180 mL, half-life period was ≥420 s, and resistance factor was ≥20. After 12 hours under constant 300℃, its forming volume, half-life period and resistance factor were all over 90% of its original values. The optimized forming agentconcentration was 0.3%, which can improve the displacement efficiency by 14.49%. The slug injection method can improve the oildisplacement efficiency by 18.25%. After this technology was used on site, the injection pressure increased by about 1.5 MPa, and theoil production was not affected by thermal injector.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2015年第2期114-116,共3页
Oil Drilling & Production Technology
关键词
泡沫调剖
多元热流体
高温起泡剂
工艺优化
稠油热采
profile control with foam
multiple thermal fluid
high-temperature forming agent
technology optimization
heavy oilthermal recovery
