This paper analyses and discusses five means of forecasting petroleum drilling cycle in the world, including historical level method, typical cases method, learning curve method, procedure work-hour method and cyclic rating method.
综合分析了国内外钻井周期预测方法,归纳出历史水平法、典型案例法、学习曲线法、工序工时法、周期定额法等,并进行了简要分析和论述。