中国石油大学学报（自然科学版）2017，Vol.41Issue(1)：85-89,5.DOI:10.3969/j.issn.1673-5005.2017.01.010
底部钻具组合造斜率预测新方法
A new method for build-up rate prediction of bottom-hole assembly in well drilling
摘要
Abstract
Based on a bit-rock interaction model and an evaluation index method of drilling tendency,a new method,named as the equilibrium tendency method,was presented to predict the build-up rate of bottom-hole assembly (BHA),which assumes that the build-up rate is equal to the borehole curvature while the drilling tendency angle is zero.The calculation formula of the drilling tendency angle was derived,and the equilibrium tendency method was then established in coupling the mechanical model of BHA and the bit-rock interaction model.Case studies of field operation have shown that the new method has a high calculation precision and can be quantitatively used to evaluate the build-up rate considering various factors,such as the features of drilling bits,the anisotropy of rocks,the stratum dip angle and its variation trend.The new method is useful for designing the BHA's structure and optimizing the drilling parameters.关键词
钻井/底部钻具组合/造斜率/钻进趋势角/井眼曲率/平衡趋势法Key words
drilling/bottom-hole assembly/build-up rate/drilling tendency angle/borehole curvature/equilibrium tendency method分类
能源科技引用本文复制引用
史玉才,管志川,赵洪山,黄根炉..底部钻具组合造斜率预测新方法[J].中国石油大学学报（自然科学版）,2017,41(1):85-89,5.基金项目
国家科技重大专项(2016ZX05022002) （2016ZX05022002）
国家自然科学基金项目(51674284) （51674284）
国家“863”计划(2012AA091501) （2012AA091501）
