S区块高分高浓聚合物驱注入参数的选择

The Selection of Injection Parameters in S Block with High Molecular Weight Polymer Flooding in High Concentration

结合H油田S区块西部Ⅱ块PⅠ1～3油层地质特点和开发状况,利用数值模拟技术,优选了该块聚合物驱注入参数,即注入速度、聚合物分子量、用量、浓度,在不增加用量的基础上,优化了段塞组合,确定了该块聚合物驱注入方式。结果表明:适合该块聚合物驱的聚合物分子量最佳为1900万,用量最佳为2000 mg/L.PV,浓度最佳为2000 mg/L。优选出的段塞组合为0.05 PV,2500万分子量,2000 mg/L+0.25 PV,1900万分子量,2300 mg/L+0.6625 PV,1900万分子量,2000 mg/L。该结果能够为其他油田聚合物驱矿场的实施提供理论指导。

Combined with H oilfield S block west II block P I 1 - 3 reservoir geological characteristics and development status, by using numerical simulation technology, the block polymer flooding injection parameters were optimized, which were injection rate, polymer molecular weight, polymer loading and polymer concentration. Without any increase in dosage on the basis of polymer, the slug combination was optimized, and the injection mode of the block polymer flooding was determined. The results showed that the best molecular weight of the polymer flooding in the block was 19 million, the best dosage was 2000 mg/L . PV, and the best concentration was 2000 mg/L. The best slug combination by election was 0. 05 PV, 25 million molecular weight, 2000 mg/L ＋ 0.25 PV, 19 million, molecular weight 2300 mg/L ＋ 0. 6625 PV, 19 million molecular weight, and 2000 mg/L. The results can provide other oil field polymer flooding pilot implementation of theoretical guidance.