一种耐油抗甲醇气井泡排剂的研究

Development of a Gas Well Foam Discharging Agent with Oil Resistance and the Good Methanol Tolerance Ability

李谦定 宋吉锋 薛 丹 李海娟

LI Qian-Ding SONG Ji-Feng Xue Dan Li Hai-Juan

本文以氧化胺（A）、合成两性表面活性剂(B)为主剂，特种表面活性剂(C)为稳定剂，研制出一种性能优异的泡排剂FHG-1。采用罗氏-迈尔斯评价方法，以起泡高度和携液量为指标，通过实验筛选出其最优配比8:2:1，评价了泡排剂FHG-1的相关性能。实验结果表明：FHG-1在30℃、含20%油（或含20%醇）的矿化度为5.0×104 mg/L的配液用水中的5 min后泡沫高度为110 mm（170 mm），携液量为116 mL（176 mL），表明FHG-1耐凝析油、抗甲醇能力优异。另外FHG-1与配液用水、地层水的配伍性优良，可适用于含甲醇、含凝析油的气井生产。

The foam discharging agent composed of oxidation amine (A) and synthetic amphoteric surfactants (B) as the main agent and special surface-active agent (C) as stabilizer was studied. With the Ross-Miles method, using the sparkling height and the fluid volume as evaluation index, the optimal ratio of A, B and C were determined, and the relative properties of foam discharging agent with 8:2:1 of A: B: C, named as FHG-1, were tested. The results indicated that, at the temperature of 30℃, 5 min foam height and fluid amount of FHG-1, was 110 mm and 116 mL in the water containing 20% oil, and was 170 mm and 176 mL in the water containing 20% ethanol, respectively, which indicated that FHG-1 had excellent oil resistance and methanol tolerance ability. In addition, the compatibility of FHG-1 with formation water As a result, the foaming agent FHG-1could be used in the gas well containing oil and ethanol。