摘要
对大斜度井、水平井进行钻井地质导向,首先要解决地层岩性的实时识别问题。介绍了一种基于测井相- 岩性分析,建立在随钻测量(MWD)和录井资料基础上的,用于实时识别近钻头处地层岩性的方法。该方法利用仅有的随钻自然伽马曲线结合工程录井的钻时曲线,应用数学统计方法,建立起研究区的随钻资料岩性识别统计模型,并将其应用于新疆本布图油田2口井的地质导向钻井中,得到了较准确的岩性剖面,表明该方法是有效的,且简单易行。
Formation lithology has to be identified in real-time while geosteering is applied to high-angle or horizontal wells. This paper presents a real-time lithology identification method that determines the lithology nearby drilling bit on measurement-while-drilling and borehole log through log facies analysis. With the only GR log and engineering log available, a lithology model of measurement-while-drilling was established with statistical techniques, and was used to geosteering drilling in 2 wells in Benbutu oilfield. Accurate lithology profile has been obtained, indicating the feasibility of the method.
出处
《勘探地球物理进展》
2006年第1期52-55,共4页
Progress in Exploration Geophysics
关键词
地层岩性
实时
大斜度井
水平井
随钻测量
地质导向
formation lithology
real-time
high-angle well
horizontal well
measurement while drilling
geosteering
