摘要
摩阻是水平井钻井极为不利的因素之一。准确地估价摩阻力对水平井钻井与完井的设计和施工都有重要的指导作用。而在摩阻力计算中,恰当地给定摩阻因数非常重要,文中在所建立的摩阻力理论模型的基础上,编制了确定井眼实际摩阻因数和由设计轨道模拟实钻井眼轨迹计算软件。通过水平井钻井实测数据,确定不同摩阻性能井段的井眼实际摩阻因数,并采用适当提高摩阻因数的方法由设计轨道模拟实钻井眼轨迹,适当提高摩阻因数的方法是通过将同一口已钻水平井的设计轨道和实钻轨迹对应井段的摩阻力进行对比、迭代计算来完成的。由多口井数据的统计计算和分析,可得某一油田或区块的水平井设计轨道各井段的摩阻因数放大因数。
On the basis of established model of frictonal force, frictional coefficient of different section of horizontal wellbore is determined through measured data while drilling. The method of increasing frictional coefficient is properly used to predict the frictional force of designed path of later horizontal wells. Thus, reliable data is provided to the optimized designing of horizontal well drilling. The method of increasing frictional coefficient is finished by repeatedly comparing computing the frictioal force of corresponding section of designed and drilled path of the same well. Modified factor of frictional coefficient of different sections of designed path of one field or area is obtained by statistical computing and analysis of more wells.
出处
《大庆石油学院学报》
CAS
北大核心
1995年第3期5-8,共4页
Journal of Daqing Petroleum Institute
基金
国家"八.五"重点攻关项目
关键词
水平井
因数
钻井
井眼轨迹
摩擦
阻力
horizontal well, frictional force, frictional coefficient, designed path, drilling trajectory
