低温固化阻水透油防砂材料的室内研究

Laboratory Study on Low Temperature Curing Water and Oil Barrier Sand Control Material

郭鸿宇 李丽华 马诚 杨超 黄金 刘正奎 刘淼

GUO Hongyu LI Lihua MACheng YANG Chao HUANG Jin LIU Zhengkui LIU Miao

针对浅层低温地层出砂和油井采出液高含水的问题，开展低温固化阻水透油防砂材料室内研究。将石英 砂、环氧树脂、相对渗透率调节剂等通过共混工艺制备了一种低温固化阻水透油防砂材料，利用FT-IR、热重、扫 描电子显微镜等分析了防砂材料及其人造岩心的固化机理、热稳定性、微观形貌等，通过岩心驱替装置考察了人 造岩心的抗压强度和水/油相渗透率。实验结果表明，含有30%相对渗透率调节剂的防砂材料在低温（30～70 ℃） 条件下，固化形成的人造岩心抗压强度达到4.22 MPa以上；同时，相对渗透率调节剂加量为30%的人造岩心的水 相渗透率和油相渗透率分别为963×10-3和5513×10-3 μm2，表现出优异的阻水透油性。所合成的防砂材料在低温 （30～70 ℃）条件下能满足低温浅层井的防砂阻水的要求。

Aiming at the problems of sand production in shallow low-temperature formation and high water cut in oil wells， laboratory research on low-temperature solidified water blocking and oil permeability sand control materials was carried out. A sand control material was prepared by blending quartz sand，epoxy resin，relative permeability regulator and dispersant. The curing mechanism，thermal stability and micro morphology of coated sand and artificial core were analyzed by FT-IR，thermogravimetry and scanning electron microscope，and the compressive strength and water/oil permeability of artificial core were investigated. The experimental results showed that under the condition of low temperature of 30—70 ℃，the artificial core obtained by solidifying the sand control material with 30% relative permeability regulator had excellent compressive strength，more than 4.22 MPa. Moreover，the cores had certain oil-water selectivity，the water phase permeability and oil phase permeability being of 963×10-3 and 5513×10-3 μm2，respectively. The obtained sand control materials met the requirements of sand control and water resistance of low temperature shallow wells under low temperature of 30—70 C.

10.19346/j.cnki.1000-4092.2023.01.011