通过对国内外钻井成本研究的分析，寻找影响钻井作业成本的主要因素，可指导钻井作业成本预测模型的建立。
Through analysis on the study of drilling cost both at home and abroad, the main factors influencing the drilling cost have been found to guide to build up the forecast model on the drilling cost.
此外，与钻井成本密切相关的定向井施工进度预测，以前也没有一个方便实用的计算机程序。
In addition, the prediction of the directional well drilling cycle is closely related to the cost, there was no convenient and practicable computer program.
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