超低界面张力泡沫体系抗油砂吸附性能  

ABSORPTION-RESISTANT PROPERTY TO OIL SAND FOR THE FOAM SYSTEM WITH ULTRA.LOW INTERFACIAL TENSION

作　　者：刘宏生[1] 于涛 曹瑞波[1] 武力军[1] 高赞[3] 陈昕 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]大庆炼化公司研究院,黑龙江大庆163411 [3]东北石油大学计算机与信息技术学院,黑龙江大庆163318 [4]大庆石油管道大庆输油气分公司,黑龙江大庆163458

出　　处：《大庆石油地质与开发》2012年第4期139-143,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：针对储层岩石对超低界面张力泡沫体系吸附问题，利用界面张力仪和泡沫扫描仪研究了非离子Gemini表面活性剂（DWS）体系经大庆净砂（洗过油）和油砂（未洗油）吸附后溶液的界面张力、起泡体积和泡沫稳定性。实验结果表明：DWS质量分数大于0．3％，经净砂吸附3次，仍具有超低界面张力，起泡体积大于150mL，泡沫稳定性大于30min，且DWS经净砂吸附1或2次后泡沫稳定性出现增加；DWS中加入聚合物（HPAM）后界面性能和泡沫稳定性升高，且HPAM质量浓度越大，效果越明显。但HPAM没有明显提高DWS经净砂吸附后的界面性能和泡沫性能；不同发泡剂体系经油砂吸附后，其界面性能和泡沫性能低于经净砂吸附的。用油砂评价发泡剂的抗吸附性能更接近地层实际情况，更具实际应用意义。Aiming at the absorption problem of reservoir rocks to ultra-low interfacial tensLon foaming system, with the help of interracial tension meter and foam scanner, the interface tension, foam volume and foam stability of the non-ionic Gemini surfactant （ DWS ） system adsorbed by Daqing oil sand （ not cleaned） and net sand （cleaned by solvent extraction） are studied. The experimental results show that DWSg mass fraction is more than 0. 3% , after absorbed for three times by net sand, the ultra-low interracial tension is still maintained, the foam volume is higher than 150 ml, the foam stability is more than 30 rain. And furthermore, after absorbed for one or two times by net sand, the foam stability of DWS increases a bit; after adding polymer （ HPAM ） , the interfacial properties and foam stability of DWS are improved, and moreover the denser the concentration of the polymer is, the better the effects are. But the polymer cannl obviously increase the interface and foam properties of DWS after adsorbed bynet sand ; the interface and foam properties of different foaming agent systems adsorbed by oil sand are poorer than those of the system adsorbed by net sand. Evaluated by the oil sand, the anti-adsorption property of the foaming agent is closer to the actual reservoirs, thus the above achievements can possess more practical significance.

关 键 词：非离子Gemini表面活性剂 大庆净砂和油砂 界面张力 起泡体积 泡沫稳定 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]