西部地区砾石层钻井难点及对策  

Drilling Gravel Formations in the Western Area: Challenges and Solutions

作　　者：张建华[1] 

机构地区：[1]中原石油勘探局钻井一公司,河南清丰457331

出　　处：《石油钻探技术》2006年第3期84-86,共3页Petroleum Drilling Techniques

摘　　要：针对我国西部部分地区的第四系、第三系地层存在巨厚砾石层,地层胶结性差、结构松散,易垮塌、掉块,钻进难度大的问题,中原油田通过对巴参1井、海参1井、金1井等几口井砾石层地层资料的综合分析和在现场实践中的不断探索,总结出安全、快速钻进砾石层的一些成功经验,对以后其它地区砾石层钻井作业具有一定的借鉴意义。Very thick gravel formations prevail in formations of quaternary and tertiary systems in the most areas of western China, which features low consolidation, easily collapsing and caving-in, so it＇s very difficult to perform drilling operations in such areas due to more accidents, long construction period and higher cost. Based on investigation and researches to a wide extent, especially, comprehensively analyzing the information from some drilled wells such as Ba-1, Well Hai -1 and Jin-1, etc. , and other acquisition due to increasing practices on site, this paper sums up some experiences in drilling gravel formations faster and safer, which provide significant references for drilling such formation in other areas.

关 键 词：砾石 井眼稳定 钻井问题 钻井液 金1井 巴参1井 海参1井 

分 类 号：TE28[石油与天然气工程—油气井工程]