摘要
铝胺高性能水基钻井液是近年来国内外钻井液新技术的热点。通过三次回收率和岩心浸泡实验,评价了胺基聚醇(有机胺类)AP-1和铝聚合物DLP-1的防塌能力,并优选出了铝胺高性能水基钻井液配方。营72-平2井三开后因严重井塌无法施工,被迫填井侧钻,侧钻至井深2 920 m时,井塌现象已非常严重,转换为铝胺高性能水基钻井液后顺利完钻。辛176-斜12井三开后钻遇大段泥页岩,地层微裂缝发育,同时泥岩中蒙皂石含量高、水敏性强,钻进中发生较严重的井壁垮塌掉块,换用铝胺高性能水基钻井液后顺利完钻。以上2口井的现场试验应用证明,铝胺高性能水基钻井液对解决因水化不均匀或微裂缝发育导致的井壁不稳定具有良好的效果。
High performance drilling fluids formulated with aluminum polymer and amine became the hotspot of the drilling fluid technology in recent years.In laboratory researches,an amine,AP-1,and an aluminum polymer,DLP-1,were tested by their inhibitive capacity using hot rolling and core soaking tests.A new mud formulated with these two compounds was used in Well Ying72-Ping2,in which drilling had been forced to stop because of the severe instability of the bore hole wall.This well was plugged back and sidetracked.At a depth of 2,920m,drilling became very difficult because of bore hole wall collapse.Then the amine-aluminum polymer mud was tried in this well.In another well Xin176-Xie12,fractured formations with high content of montmorillonite led to severe bore hole collapse during drilling,and it was decided to try the amine-aluminum polymer mud.Both wells were successfully drilled to total depths and completed.It was proved that the amine-aluminum polymer mud is suitable for drilling unstable formations with developed fractures and non-uniformly hydrated constituents.
出处
《钻井液与完井液》
CAS
北大核心
2008年第4期23-25,共3页
Drilling Fluid & Completion Fluid
关键词
高性能水基钻井液
井眼稳定
胺基聚醇
铝聚合物
High performance water base drilling fluids
Bore hole stabilization
Amino poly alcohols
Aluminum polymers.
