岩石可钻性钻速模式研究

A Study on Drilling Rate Model of Rock Drillability

地层是钻井工程最直接的研究对象,地层是影响钻速的最重要因素。本文主要讨论如何寻求地层可钻性钻速模式。试验与计算结果表明,在标准化条件下,方程V=bw^a的系数a、b主要受地层的微可钻性级值的影响,它们都是可钻性级值Kd的函数,且这种函数有区域性。通过对地质单元上的a、b值变化规律的研究求出了五个油田统一的可钻性钻速模式。

Formation is the most direct research object of drilling engineering. Therefore the most important factors affecting the drilling rate are formation parameters. This paper aims to find the drilling rate models of the formation parameters. The research results show that under the standard conditions; coefficient a and b of the equation v=bw^(?) are mainly affected by microdrillability grade K_d, and the district properties of the functions have been found. Through the studying of the changing regularity of a and b with kd got from the geological elements in five oil fields, the drilling rate models of microdrillability have been found.