Effect of In-Drilling Alignment with General Dynamic Error Model on Azimuth Estimation

Kelly Ursenbach, M. Mintchev
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引用次数: 2

Abstract

Directional drilling is common in oil and natural gas extraction, offering numerous advantages. However, directional drilling requires accurate trajectory measurements. Azimuth is a critical part of the trajectory measurement, but industry standard methods of determining azimuth have drawbacks. Inertial navigation systems (INS) have been proposed as a solution but require periodic calibration. In-drilling alignment (IDA) is a calibration method which uses measured motion of the inertial measurement unit (IMU) to overcome the observability problems that come with a static calibration. This paper presents a novel model which converts IDA motion and inertial measurements into an azimuth estimate. The model is validated using a device designed to carry out IDA under laboratory conditions.
通用动态误差模型钻孔对准对方位估计的影响
定向钻井在石油和天然气开采中很常见,具有许多优点。然而,定向钻井需要精确的轨迹测量。方位角是弹道测量的关键部分,但工业标准的方位角确定方法存在缺陷。惯性导航系统(INS)被提出作为一种解决方案,但需要定期校准。钻孔对准(IDA)是一种利用惯性测量单元(IMU)的测量运动来克服静态校准所带来的可观测性问题的校准方法。本文提出了一种将IDA运动和惯性测量转换为方位角估计的新模型。该模型使用设计用于在实验室条件下进行IDA的设备进行验证。
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