油田从勘探到大规模开发,都离不开钻井取心这一环节。不同取心方法的原理及工艺技术各有特点,下面简介之: 1.普通取心使用单简或双筒取心工具,钻井液使用水基泥浆体系,不考虑泥浆水对岩心的污染。这种方法获得的岩心受泥浆冲刷较为严重,地面饱和度变化大,但取心成本相对低。该取心方法贯穿在油田勘 Oil exploration from exploration to large-scale development, are inseparable from drilling this part of the corridor. The principle of different coring methods and technology have their own characteristics, the following brief introduction: 1. Ordinary coring using simple or binocular coring tools, drilling fluid using water-based mud system, regardless of the muddy water on the core of pollution. The core obtained by this method is more seriously washed by mud and the ground saturation varies greatly, but the coring cost is relatively low. The coring method runs through the oil field