水平井分段完井工具的室内试验及现场应用

水平井完井技术的发展趋势是分段完井，即能实现分层开采及异质层隔离功能的完井技术。为此，设计了由内外两套管柱组成的分段完井工具，外管柱实现层间隔离功能，内管柱实现坐封管外封隔器功能。室内试验表明，管外封隔器膨胀后其外径、密封效果、耐压能力等均可满足现场应用的要求。现场应用表明，采用分段完井工具进行分段完井的水平井能实现分层开采及各个不同层系间的隔离、延长无水或低含水开采期、提高采收率的目标。 

Laboratory Tests and Field Applications of Horizontal Segregated Completion Tools

Segregated completion technology which can realize zonal production and interzonal isolation is the development direction of horizontal well completion.The segregated well tools are composed of inner and outer strings.The outer string is for zonal isolation while inner string is to expand external casing packer(ECP).Laboratory test results indicate that ECPs can meet requirement of field application after expansion in OD,sealing effect,bearing pressure,etc.In-situ applications indicate that horizontal wells...