摘要
吐哈油田鲁2块油藏埋藏深,油层厚度较大,层内非均质性严重,水油流度比大,水窜严重,严重影响了注水开发效果。针对这一问题,提出了用交联聚合物驱油,并研制出了适合吐哈鲁2块的驱油剂配方,在此基础上,分析了交联聚合物驱油剂粘度、注入倍数、注入浓度、注入速度和注入量对驱油效率的影响。通过室内试验确定其注入参数如下:粘度为308.9mPa.s,注入倍数为0.4PV,注入浓度为1500mg/L,注入速度为1.5mL/min,注入量为600PV.mg/L。
Block Lu 2 is a deep reservoir with great thickness and layer heterogeneity.Because of the high mobility ratio between injected water and crude oil and severe water channeling,the waterflooding is influenced considerably.To solve the problem,cross-linked polymer flooding is proposed.Oil displacement agent formulas is developed which can be used in Block Lu 2.Based on this,the impact on oil displacement efficiency by the polymer viscosity,injection multiple,injection density,injection rate,and injection size are studied.Laboratory tests are determined,viscosity is 308.9mPa·s,the injection multiple is 0.4PV,the injection density is 1500 mg/L,the injection velocity is 1.5 mL/min and the injection rate is 600PV·mg/L.
出处
《长江大学学报（自科版）（上旬）》
CAS
2010年第3期519-520,523,共3页
JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG
关键词
吐哈鲁2块
交联聚合物
驱油效率
影响因素
block Lu2
cross-linked polymer
displacement officiency
influencing factor
