GPS RTK在油田井位测量中的误差分析及应对措施

目前,江汉油田井位测量主要是采用GPS RTK(Real Time Kinematic实时动态差分)方式测量,与其它测量方式相比,GPS RTK具有快速、便捷、定位精度高等特点。但在实际测量中仍会产生误差。分析发现,测量误差主要与GPS系统的空间部分、地面控制部分和用户设备部分密切相关。从选择合适的测量仪器、测量数据处理软件、观测位置、适当延长观测时间、加强操作人员能力培养等方面入手,可有效消除或减小部分误差,提高测量精度。

Error Analysis of Oil Well Position Survey by GPS RTK and Solutions to Errors

At present, well position survey in Jianghan Oilfield adopts GPS RTK. Compared with other survey methods, GPS RTK is rapid, convenient and accurate in the survey. The survey errors, however, still exist. The analysis finds out that the errors are bound up with GPS system. It is possible to effectively eliminate or minish some errors so as to improve survey accuracy through choosing appropriate surveying instrument, software for processing survey data as well as observing location, properly prolonging observing time and enhancing operators＇ ability development.