渤海Q油田三种不同驱油体系传输运移能力对比研究

为筛选出更适合渤海Q油田的驱油体系,在模拟油藏条件(温度63℃,地层水矿化度4 500 mg/L,脱气原油地面黏度75 mPa·s)和驱油体系在进入油藏前受到炮眼剪切作用下,利用流变仪、动静态光散射仪、化学驱物理模拟装置等设备,分析交联聚合物微球(WQ)、聚表剂(HG)两种驱油体系的分子结构、溶液性能以及在岩心中的传输运移能力,并与普通聚合物(HPAM)进行比较。实验结果表明,三种驱油体系的传输运移能力大小排序为:HPAMHGWQ。

Comparative study on transmission and migration capacity of three different oil displacement systems in Bohai Q oilfield

In order to select the oil displacement system more suitable for Bohai Q oilfield, under the simulated reservoir conditions(temperature is 63 ℃, formation water salinity is 4 500 mg/L, surface viscosity of degasified crude oil is 75 mPa·s) and the perforation shear effect of the oil displacement system before entering the reservoir, by using rheometer, dynamic and static light scattering meter, chemical drive physical simulation device and other equipment, the molecular structure, solution performance and transport ability in core of WQ and HG oil displacement systems were analyzed and compared with ordinary polymer(HPAM). The experimental results show that the order of transmission and migration capacity of the three oil displacement systems is: HPAM>HG>WQ.