摘要
以油藏工程理论为指导,以数值模拟技术为研究手段,以NB35-2油田B17井组为研究平台,开展了单独水驱、调驱、热流体吞吐和"调驱+热采"联合作业数值模拟研究。在此基础上,优化了注入工艺参数,开展了矿场试验及效果分析。研究结果表明,"调驱+热采"联合施工开发经济效果最优。矿场试验表明:B17井组注入压力大幅度升高表明聚合物弱凝胶能够有效地封堵大孔道,调整吸液剖面;油井注入热流体后,井筒附近储层温度大幅度提高,原油黏度明显下降,渗流阻力减小,生产压差增加,原油产量大幅度提高。理论和实践都证明"调驱+热采"联合施工可以比单独调驱或热流体吞吐获得更好的增油效果,为海上稠油油藏高效开发探索出了一条有效途径。
Guided by reservoir engineering theories and by means of the numerical simulation techniques, taking Well Group B17 of NB35-20ilfield as the researching platform, the numerical simulation studies on the results of the individual water drive, profile control and flooding, thermal fluid huff and puff and ＂profile control and thermal floodings＂ combined operation are conducted. On the basis of the above, the parameters of the injection technology are optimized and furthermore the field tests and their effects are analyzed. The study results show that the economic effects of the combined operation are most perfect. The tests prove that the high-degree injection pressure rise of Well B17 demonstrates that the polymer weak gel can effectively block the big pores and then the fluid entry profiles can be adjusted; After injecting the thermal fluid into the oil wells, the reservoir temperature around the boreholes rises a great deal, the viscosity of the crude oil is obviously decreased, the percolating resistance is reduced, the differential pressure is increased and finally the oil production is enhanced greatly. The theories and practices have verified that the combined simulation can obtain much better effects of the oil increment than method such as the separate profile control flooding and thermal fluid huff and puff, thus the high-efficiency development of offshore heavy oil reservoirs has explored. those of the individual effective approach for
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2015年第2期130-134,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家"十二五"油气重大科技专项"转向海上稠油保压热采技术示范"(2011ZX05057-005-003)
关键词
稠油油藏
聚合物凝胶调驱
多元热流体吞吐
调驱热采
协同作用
heavy oil reservoir
polymer gel flooding
multiple thermal fluid soak/huff and puff
profile controland thermal floodings
synergistic/cocodinant/cooperative effect
作者简介
李雪，女，1986年生，在读硕士，主要从事提高采收率技术研究工作。E-mail：lx281272467@163．com
