水包油钻井液在梨深1井欠平衡段的应用  

Application of Oil-in-water Drilling Fluid in Unbalanced Drilling Section of Well Lishen 1

作　　者：祃树攀[1] 张彦明[1] 

机构地区：[1]中国石化集团华北石油局五普钻井公司,河南新乡453700

出　　处：《探矿工程（岩土钻掘工程）》2009年第10期18-20,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：采用何种流体作为携岩介质,既能保护油气层又能保持井壁的稳定是欠平衡钻井的关键。梨深1井在四开欠平衡井段采用了水包油钻井液体系,这是该区域首次使用此体系。通过配方的优选,科学的维护处理,不但能够发现和保护了油气层,同时对较长泥岩段的井壁稳定起到了良好的防塌效果,为以后该区域的欠平衡钻井施工提供了一个较好的携岩体系。Selection of cutting carrying medium is very important for unbalanced drilling, which should protect oil ＆ gas reservoir and keep the borehole stability. Oil-in-water system was firstly applied in the fourth unbalanced drilling section of Well Lishen 1. Optimized drilling fluid formula and scientific maintenance played well in oil ＆ gas formation protection and borehole collapsing prevention, a new type of cutting carrying medium was developed for unbalanced drilling construction in this area.

关 键 词：欠平衡钻井 水包油钻井液 维护处理 防塌 保护油气层 

分 类 号：TE254[石油与天然气工程—油气井工程]