草舍油田CO_2泡沫驱油起泡剂的选择  

Quarternary Ammonium Salt Foamer YFP-1 Selected for CO_2 Foam Flood Project in Caoshe Oil Field

作　　者：李春[1] 伊向艺[1] 刘伟[2] 卢渊[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),四川成都610059 [2]中国石化华东分公司,江苏南京210011

出　　处：《油田化学》2007年第3期255-257,共3页Oilfield Chemistry

摘　　要：苏北草舍水驱油田CO2气驱先导试验效果不佳，转而采用CO2泡沫驱。本文报道起泡剂选择。所选起泡荆YFP-1是一种商品季铵盐类表面活性荆，在矿化度17．2g／L的模拟回注污水中配成1．5％溶液，用丝网搅动法考察起泡体积、泡沫半衰期、耐油性、耐温性，均可满足该油田泡沫驱要求，最佳pH值为6～7。在渗透率4．82×10^-3。和0．72×10^-3心的～5cm长不合油石英砂填砂管上，测定水驱、1：1CO2泡沫驱、水驱压差，求得CO2泡沫的阻力系数分别为2．78和2．40，残余阻力系数分别为1．64和2．16。图1表4参2。The CO2 gas flood pilot project performed at Caoshe oil field, North Jiangsu, was uneffective and a CO2 foam flood project is adopted instead. This paper presents the foamer selection for CO2 foam. The foamer chosen, YFP-1, is a commercial quartemary ammonium salt type surfactant. For its 1.5% aqueous solution in Caoshe＇s produced water of TSD = 17.2 g/L for reservoir flooding, the foaming capability, foam half-life time, oil tolerancy, and heat resistance, determined by the way of repeated lift up and down of screen, meet all requirements for foam flood at the oil field with suitable pH range in 6-7. On two oil free quartz sand packs -5 cm long and of permeability 4.82×10^-3 and 0.72×10^-3 pan2, an fr value of 2.78 and 2.40 and an f,, value of 1.64 and 2.16, respectively, are obtained for CO2 foam in-situ fomled in the course of injecting water, 1.5% YFP-1 solution and CO2 gas in ratio 1： 1, and water again.

关 键 词：起泡剂 有机季铵盐类 表面活性剂 CO2泡沫 泡沫驱 苏北草舍油田 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TE357.46