摘要
对目前几种轨道设计方法进行了讨论。结合侧钻水平井轨道控制技术的特点 ,依据数学优化理论 ,建立了侧钻水平井轨道三维优化设计的数学模型。该模型以最短曲线段长度为目标函数 ,定量地考虑了影响轨道设计与控制的主要因素。理论分析与 10多口井的验证表明 ,与常规轨道设计方法相比 ,该模型真实地反映了侧钻水平井轨道控制的规律 ,提高了轨道设计的科学性 ,避免了重复调整设计的缺点 ,极大地简化了轨道三维设计的过程。另外 ,该模型具有中靶精度可调。
This paper first discusses some trajectory design methods that are commonly used,then develops new mathematical model for designing 3 D trajectory in re entry horizontal drilling based on optimization theory and the trajectory control characteristics.The new model regards the length of curve section as its objective,in which main factors affecting 3 D trajectory design & control are considered quantitatively.Theoretical analysis and more than 10 case studies show that the new model has many advantages comparison with traditional design methods.It embodies the features of trajectory design & control,can greatly simplify the design process and hit the prescribed point or target with much higher accuracy.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2001年第3期86-90,共5页
Acta Petrolei Sinica
基金
中国石油天然气集团公司"九五"重点科技攻关项目 !(95 -10 8-0 1)"7″套管内短半径水平井钻井技术"中的部分内容
关键词
侧钻
水平井
三维
轨道
优化设计
数学模型
re entry
horizontal well
three dimensions
trajectory
optimal design
mathematical model
