摘要
随钻地层压力检测在保护油气层、保障钻井安全、确定井身结构等方面具有重要作用,长期以来,随钻地层压力检测基本采用dc指数、泥页岩密度等方法。研究发现,利用核磁共振和离子色谱两种录井新技术获得的岩石孔隙度、钻井液盐度等参数,可以随钻检测岩石孔隙体积和孔隙流体性质的变化,从而判识基于岩石孔隙体积变化和孔隙流体体积变化成因的异常压力,基于此希望找到更多的现场随钻地层压力检测方法和手段,对此进行了初步探讨。
The formation pressure detection while drilling plays a significant role in the aspects of protecting oil and gas reservoir, insuring drilling safety,determining hole structure and etc. Over a long period of time, the formation pressure detection while drilling basicamly has adopted the methods of dc exponent, shale density and so on. It was eiscovered by the study that the parameters such as the rock porosity, drilling fluid salinity etc. obtained by using two new drilling fluid technologies of nuclear magnetic resonance and ion chromatography, could be used to detect the changes of rock porosity volume and pore fluid properties while drilling. Therefore, the abnormal pressure could be distinguished which is based on the origins of rock pore and pore fluid volume changes. In view of this, the author hopes to find more methods and means for formation pressure detection while drilling on well site and carries out the initial discussion on the subject.
出处
《录井工程》
2007年第1期1-4,共4页
Mud Logging Engineering
关键词
地层压力
随钻检测
核磁共振
离子色谱
体积变化
formation pressure, detection while drilling, nuclear magnetic resonance, ion chromatography, volume change
