侧钻水平井轨道三维优化设计模型及应用  

AN OPTIMAL MODEL AND ITS APPLICATION FOR DESIGNING 3-D TRAJECTORY IN RE-ENTRY HORIZONTAL DRILLING

作　　者：江胜宗[1] 夏尊铨[1] 曹里民[2] 

机构地区：[1]大连理工大学应用数学系,辽宁大连116023 [2]辽河石油勘探局,辽宁盘锦124010

出　　处：《石油学报》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

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.

关 键 词：侧钻 水平井 三维 轨道 优化设计 数学模型 

分 类 号：TE243[石油与天然气工程—油气井工程]