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Sensitivity Analysis of Dogleg for Trajectory Design in Bozhong Cluster Well
Author(s): 
Pages: 177-179,183
Year: Issue:  3
Journal: Journal of Liaoning Institute of Technology(Natural Science Edition)

Keyword:  丛式井轨道设计全角变化率渤中油田;
Abstract: 海上油田开发受空间限制,多采用丛式井组,丛式井轨道设计时,较大的全角变化率有利于缩小总进尺和进行防碰设计,但全角变化率的增加,对钻杆寿命、套管磨损等都有不利影响,如何确定合理的全角变化率成为影响钻井安全和经济效益的重点之一.首先分析了随着全角变化率的变化,井深变化的规律,再建立模型,分析全角变化率增加对钻杆疲劳、套管磨损、马达滑动造斜段长度等的影响,确定了海上丛式井合理的全角变化率范围,从而得到在合理范围内增加全角变化率有利于节约钻井成本,且安全可行的结论,为海上油田丛式井轨道设计全角变化率选择提供参考依据.
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