GPS-RTK技术在石油天然气井位测量中的应用

定位技术是GPS测量技术发展的一个新突破。基于GPS-RTK测量技术的基本原理和优点,GPS-RTK技术在石油天然气井位测量领域得以应用。井位测量包括初测和复测。测量精度取决于钻井目的。井位测量时应注意以下几点:①基准站应设在井位控制点上;②流动站和基准站之间不宜超过20km,二者之间不能有影响数据传输的障碍物;③GPS卫星高度角不宜小于15°;④GPS接收机100m之内无强大的电磁波辐射源。综合应用表明,GPS-RTK技术在油田井位测量中有布网方便、测量迅速、精度高等优点,不仅能满足井位测量工作的需要,而且适用于公路、铁路、长输管道、输电线路、干渠等线路工程测量,具有广泛的应用前景。

Application of GPS-RTK Technique in Surveying Oil-Gas Well Site

Location technique makes a new breakthrough in the development of GPS surveying technique.Based on its basic principle and advantage,GPS-RTK technique is used in the field of oil-gas well site survey which includes preliminary and repeating survey whose desired accuracy depends mainly on drilling purpose.During oil-gas well site survey,attention should be paid to the following things: 1.Reference station must be located on the control point of well site;2.The distance between moving station and reference one should be no more than 20km where no obstacle is permitted to affect data transmission;3.GPS satellite elevation should be no less than 15 degree;4.No strong electromagnetic radiation resource exists within 100 meters to GPS receiver.Integrated application demonstrates that because GPS-RTK has advantages of deploying network easily,rapid surveying and high accuracy in the well-site survey,it can not only meet the demand for well site survey,but also be suitable for engineering surveying including highway,railway,long-distance pipeline,electric transmission line and main canal,Which brings it a wider application prospect.