Multi-well data comprehensive analysis method and its application
Rongchao Cheng · Zhongguo Shiyou Daxue xuebao. Ziran kexue ban · 2010
In view of the deficiency of present well drilling data management system in data mining and technology scheme recommendation,a new drilling optimization scheme for multi-well data comprehensive comparison and analysis was proposed on the basis of well history data,logging data and mud logging data of each oil field.The interactive multi-well data graphical comparison and multidimensional data statistic analysis mode were introduced.The scheme was applied in the distributed system developed for multi-well data management.The analytical results of formation and pressure difference were used as the foundation for optimal selection of reference wells.The factors for accident,complexity and hole diameter enlargement rate,as well as the casing point algorithm,were used to optimize wellbore profile.Meanwhile,the Jacobi iteration method was used to optimize bit type and recommend drilling parameters.Application results show that the new method can provide technical and theoretical support for pre-drilling design and post-drilling analysis,and its feasibility and reliability were demonstrated in Xinjiang Oilfield.