水平井防倒流砾石充填工具的改进与应用  

Improving and applying of anti-backflow gravel packing tools in horizontal wells

作　　者：关月[1] 袁照永[1] 

机构地区：[1]中国石油大港油田公司石油工程研究院,天津300280

出　　处：《石油钻采工艺》2015年第6期117-118,共2页Oil Drilling & Production Technology

摘　　要：砾石充填对于粉细砂岩和高泥质含量的油藏有防砂范围广、防砂周期长、不易堵塞等特点,应用较为广泛。但是,在砾石充填完井作业中经常会出现充填口关闭不到位、充填砂回吐等问题。因此设计了具有三层密封功能的防倒流砾石充填装置。现场应用表明,改进后的工具施工成功率100%,延长油井检修周期,减少单井资金投入,提高经济效益。Gravel packing has a wide range of sand control, not easily blocked and has a long sand control period for ifne-silty sandstone and highly argillaceous reservoir and is used extensively. However, during gravel packing completion operations, there often occur such problems as packing opening not closed adequately, back-lfow of packing sand, etc. Therefore, an anti-backlfow gravel packing device has been designed which has three-layer sealing function. Field application shows that the improved tool has a 100%success rate of gravel packing, extended the maintenance cycle of oil wells, reduced capital investment in single wells and improved the economic proift.

关 键 词：水平井 防倒流 砾石充填 工具 

分 类 号：TE935[石油与天然气工程—石油机械设备]