摘要
在对钻头作等效处理的基础上,用横观各向同性地层的概念建立了钻头与地层相互作用二维模型,用正交各向异性地层的概念建立了钻头与地层相互作用三维模型,分别用于对二维和三维井眼轨迹问题做定性分析和定量计算。通过对实钻井斜资料进行的统计分析表明,在自然井斜中,地层因素是影响井斜的重要因素。在易斜地层中,井眼轴线遵循上倾偏斜规律,井斜方位与地层上倾向方位趋于一致。统计分析结果与采用模型所做的定性分析结果相符。
On the basis of equalization of bit forces, two-dimensional and three-dimensional bit formation interaction models were established for transversely isotropic formation and orthogonally anisotropic formation respectively. In a formation where the well is likely to be deviated, the borehole axis follows the updip direction and its ezimuth coin cides with the updip axi-muth angle. The statistical analysis agrees with the qualitative analysis by the proposed models.
出处
《石油大学学报（自然科学版）》
CSCD
1990年第6期15-25,共11页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
钻头
地层
相互作用
井眼轨迹
模型
Bit
Formation
Interaction
Model
Hole trajectory
