油井屏蔽洗井技术研究及现场应用  

RESEARCHES AND OILFIELD APPLICATIONS OF OIL WELL MASKING WASHING-WELL TECHNOLOGY

作　　者：唐善法[1] 喻高明[1] 蔡木平[2] 杨顺贵[2] 郭洪金[3] 

机构地区：[1]江汉石油学院,湖北荆州434023 [2]中原油田采油三厂,山东莘县252429 [3]胜利油田现河采油厂,山东东营257000

出　　处：《石油钻采工艺》2003年第3期58-60,共3页Oil Drilling & Production Technology

摘　　要：针对负压油井洗井时不能建立正常循环 ,易造成产层损害和油层水淹的情况 ,提出了屏蔽洗井技术的思路 ,研制了相应的屏蔽洗井液。室内与现场试验表明 ,屏蔽洗井液具有良好的悬浮稳定性、屏蔽暂堵性、抗温抗盐性和解堵能力 ,较好地解决了该类油井洗井后排水时间长 (约 5d)、油层损害、产能下降和电泵井砂卡等问题 ,节省了洗井用水 ,简化了井下作业程序 ,降低了非生产成本 ,具有明显的降水增油效果 ,单井增产 1 %～ 5 .5 %。According to the situation that there is loss of circulation, formation damage and water out in washing well of negative pressure oil well, the viewpoint of masking washing well technology is proposed, and relevant washing fluid is prepared. Library and oilfield experiment show the masking washing fluid have better stability of suspension?masking temporary shut off?high temperature and salinity, and ability to remove temporary shut off; All problems that oil wellwater removal time is long, formation is damage, and producing capability decreases are resolved; Washing well water is saved, the working program under well is simplified, non production cost decrease; 1%～5% recovery efficiency is attained in per well.

关 键 词：负压油井 现场应用 屏蔽洗井技术 屏蔽洗井液 油层保护 

分 类 号：TE252[石油与天然气工程—油气井工程]