摘要
冀东油田浅层油藏大部分属天然边底水驱,埋藏浅,胶结疏松,出砂严重,地层压力系数低,漏失严重,常规的冲砂技术施工成功率低,运行成本高,对油层伤害严重。研究应用的自匹配绒囊修井液暂堵冲砂技术可以通过对漏失严重的地层进行暂堵,从而保证水平井冲砂施工顺利进行,冲砂施工结束后暂堵失效,不影响其他施工。现场应用表明,自匹配绒囊修井液暂堵冲砂技术可以有效提高水平井冲砂施工成功率,降低运行成本。
The shallow reservoirs in Jidong oilfield are of natural border district water-flooding,which are damaged easily because of sanding up heavily,low formation pressure and severe lost circulation.The technology of self-matching fuzzy ball workover fluid temporary-sealing sand washing is applied to wash sand in horizontal wells,which has no effect on other operations.
出处
《钻井液与完井液》
CAS
北大核心
2012年第5期89-91,102,共3页
Drilling Fluid & Completion Fluid
关键词
水平井
绒囊
修井液
暂堵
冲砂
Horizontal well
Fuzzy ball
Workover fluid
Temporary sealing
Sand washing
