马岭低渗透高含盐油藏聚合物驱油试验

POLYMER FLOODING TEST IN LOW PERMEABILITY AND HIGH SALINITY RESERVOIR OF MALING OILFIELD

马广彦 左克珍 徐振峰

Ma Guangyan Zuo Kezhen Xu Zhenfeng

长庆石油勘探局勘探开发研究院

在对国产黄孢胶和聚丙烯酰胺进行综合评价的基础上,选择低水解度水溶胶聚丙烯酰胺配制聚合物驱油剂,在马岭低渗透和高矿化度油藏进行聚合物驱替试验研究。试验结果表明,将10%水解度的聚丙烯酰胺与化学稳定剂联合应用,可使聚丙烯酰胺的抗盐性能和热稳定性能符合马岭油藏驱油需要。通过对马岭油藏聚合物驱油物理模拟和数值模拟研究,确定了最佳聚合物注入参数,并在马岭中区实施了单井试注。

On the basis of comprehensively evaluating the homemade xanthan gum and polyacrylamide,chose the low hydrolysis water soluble polyacrylamide to prepare the oil displacement agent,then,used the prepared polymer to have conducted displacement test in the low permeability and high salinity reservoir of Maling oilfield. Displacement test results indicated:when the polyacrylamide with 10% degree of hydrolysis was used together with the chemical stabilizer,the salt tolerant property and the thermal stability of the polyacrylamide could accord with the oil displacement test requirements of Maling oilfield. After having conducted physical analog and numerical simulation on polymer flooding in Maling oilfield,the optimal polymer injection parameters were determined. In addition,polymer injection test was conducted in single well in middle unit of Maling oilfield.

10.3969/j.issn.1000-7393.1999.01.022