三维井眼轨道设计模型及其精确解  被引量:54

Three-dimensional well-path planning model and its exact solution

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作  者:唐雪平[1] 苏义脑[1] 陈祖锡[1] 

机构地区:[1]中国石油勘探开发研究院,北京100083

出  处:《石油学报》2003年第4期90-93,98,共5页Acta Petrolei Sinica

基  金:国家高技术研究发展计划 (863)项目 (82 0 0 9 0 1 0 2A);国家"九五"科技攻关项目 (95 1 0 8 0 1 0 3)资助

摘  要:合理的井眼轨道设计是成功控制井眼轨道的关键。准确、快速、合理地设计多约条件下的三维井眼轨道是人们期待解决的问题。文中建立了给定目标点位置和井眼方向的三维轨道设计的一般数学模型 ,利用矢量分析理论得到了约束变量间的解析表达式和井眼轨道计算式。这种方法避免了求解多维非线性方程组 ,设计计算简单、精确。应用该模型成功地解决了复杂的多约束条件下的三维井眼轨道设计这一难题 ,具有普遍适用性 ,可广泛用于设计各种类型的水平井、定向井和多目标井 。A reasonable well_path planning is the key to control well path successfully.It is expected to solve the problem about accurate,quick and reasonable design of three_dimensional well_path subject to various constraints.A general mathematical model for 3D well_path planning was established with given target position and direction of wellbore.The exact mathematical expressions of constraint variables and well_path calculation formulae were derived using space vectors theory.The new method has no need for solving the constraint equations group,and the design calculation is simple and accurate.The model was used to solve the difficult multi_constraint problems in complex 3D well_path planning successfully.This method can be widely used to plan all kinds of horizontal wells,directional wells and multiple target wells and may provide more accurate theory foundations for well_path control.

关 键 词:水平井 定向井 多目标井 三维井眼轨道 设计 数学模型 精确解 计算 

分 类 号:TE242[石油与天然气工程—油气井工程]

 

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