【摘要】 本文由理论上叙述了以钻进成本为准则的目标函数,其重要特点:一次、二次可微性,凸性,可行集;并在分析诸特点的基础上,提出了最优钻进措施的寻求部位和解题方法。 为了充分利用钻进目标函数这一数学概念,解决生产实际问题,提出了在现场条件下使用目标函数等值图的想法。文内分析了钻进成本等值面族在各个典型截面上的特点,并指明了其有意义部分所在。从实用角度出发,认为组合等值图是具有实际意义的,它可以说明每一种钻压转速配合下,所可能取得的最大经济效益,为各个矿区改进技术措施提供理论依据。更多还原

【Abstract】 According to the important features of the objective function of penetration cost, such as the first-oder and second-oder differentiability, convex-ness, feasible section, location and method of seeking the optimum drilling parameters are suggested in this paper.Based on an analysis of isocost surface, the combined isocostograph has practical significance in drilling operation. Maximum economical effect for each bit weight and R.P.M. combination was determined and a scientific basis for parameter improvement in the field can be provided by such isocostograph.更多还原