特低渗透油藏空气泡沫驱实践与认识  

Practice and Understanding of Air-Foam Flooding in Ultra-Low Permeability Reservoir

作　　者：段文标[1,2] 康兴妹[1,2] 熊维亮[1,2] 赵向宏[1,2] 庞岁社[1,2] 雷欣慧[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程实验室

出　　处：《低渗透油气田》2012年第1期107-109,138,共4页

摘　　要：为改善三叠系特低渗透油藏中高含水期开发效果，提高单井产量和采收率，探索特低渗透油藏提高采收率技术途径，选择在三叠系特低渗透油藏开展空气泡沫调驱试验。通过室内实验验证了长6油藏原油与空气可以发生低温氧化反应，并在此基础筛选出了适合本油藏的泡沫体系。室内真实岩心进行空气泡沫驱替表明，水驱后转入空气泡沫驱后驱油效率可以提高20％左右。现场先导性试验表明，实施空气泡沫驱后，井组综合含水有所下降，井组主向油井增油效果明显，试验区整体向采收率提高方向偏移，表明空气泡沫驱对提高特低渗透油藏采收率是有效的，但目前注入量偏低．其整体效果仍需观察。To improve the development effectiveness of the Triassic ultra-low permeability reservoirs in high water cut stage, to im- prove well production and recovery, and to explore ways to ultra-low permeability reservoirs to enhance oil recovery technology, se- lect the low permeability in the Triassic reservoir to carry out air-foam flooding test. Laboratory experiment to verify the long reservoir of crude oil and the air can occur in low-temperature oxidation, and on this basis of a foam system for the reservoir. The real core of the indoor air foam flooding experiments show that after water flooding into the air-foam flooding drive to improve the efficiency of the flooding about 20%. The field test drive of the implementation of the air-foam, the water cut of well group declined obviously well group the main effect of inereasing oil to wells, the test area as a whole shifted to improve the recovery, indicating that the air bub- ble drive to improve the uhra-low permeability reservoir recovery is effective,but the low injection volume, the overall effect remains to be seen.

关 键 词：特低渗透油藏 空气泡沫驱 室内实验 现场试验 采收率 

分 类 号：TE348[石油与天然气工程—油气田开发工程]