井下自生气复合泡沫技术在稠油热采中的研究与应用  

Study and application of downhole authigenic gas compound foam in heavy oil thermal recovery

作　　者：姚凯[1] 王史文[1] 孙明磊[1] 党龙梅[1] 刘艳波[1] 

机构地区：[1]中石化胜利油田股份有限公司现河采油厂,山东东营257015

出　　处：《特种油气藏》2002年第1期61-63,共3页Special Oil & Gas Reservoirs

摘　　要：针对乐安稠油老区吞吐末期开发效果日益变差的状况 ,开展了井下自生气复合泡沫技术研究。根据室内研究 ,在高温下引发剂迅速分解产生的CO2 等气体 ,能扩大蒸汽扫油面积 ,降低原油粘度 ,提高注汽效果。当引发剂与泡沫剂混合注入时 ,则兼具气驱、活性液驱与泡沫驱的功效。该工艺现场施工简单 ,费用低 ,在草 2 0区块开展了 3口井的现场应用试验 。In accordance with the problem of worse becoming development in late period of steam stimulation in old heavy oil area of Lean oilfield, study on downhole authigenic gas compound foam has been carried out. Laboratory study discovered that CO\-2 and other gases generated from rapid decomposition of initiating agent under high temperature could expand steam sweep area, reduce oil viscosity, and improve steam injection efficiency. When initiating agent and foaming agent were injected together, there showed effectiveness of gas drive, surfactant flood and foam drive. This technology is simple and cheap. Field application in 3 wells of block Cao 20 had resulted in favorable production increment.

关 键 词：特稠油 引发剂 发泡剂 气驱 活性液驱 泡沫驱 乐安油田 热力采油 驱油 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程] TE357.46