石油钻采工艺2024，Vol.46Issue(1)：60-66,118,8.DOI:10.13639/j.odpt.202312013
储气库掩埋井口精确磁定位技术
Precise magnetic positioning technology for buried wellheads in underground gas storages
摘要
Abstract
In construction of underground gas storage facilities,it is essential to ensure the sealing performance of the gas storages.When determining the location of abandoned and buried old wells for sealing,there exist certain errors and uncertainties with the common surveying methods.A precise magnetic positioning technology for buried wellheads was proposed.In conjunction with back-scattering signal survey technology,precise survey and positioning of buried wellheads can be achieved by actively exciting the magnetic field distribution characteristics around the buried wellheads.The system mainly consists of launcher,receiver and computing unit.By using positioning algorithms such as signal extraction,coordinate transformation,plane positioning and vertical positioning,the buried wellheads position can be determined.Meanwhile,potential interferences on magnetic positioning effect by winches,circuits and transmitters,etc.were analyzed.This technology was applied in the positioning operation of Well Qiaoxia S in national natural reserve in Liaohe Oilfield,where a total of four wells were drilled.After alternately surveying twice,the wellhead position of Well S was successfully locked,followed by successful excavation with an error less than 0.5 meters compared to the surveyed coordinates.The magnetic positioning technology solves the problem that has long plagued oil fields in the smooth construction of gas storages,and provides a reliable solution for the precise positioning of buried wellheads,which is of guiding significance.关键词
储气库/掩埋井口/磁定位技术/反向散射信号/精确测量Key words
underground gas storage/buried wellhead/magnetic positioning technology/back-scattering signal/precise survey分类
能源科技引用本文复制引用
车阳,方明星,贺梦琦,王辰龙,黄洋,王开龙..储气库掩埋井口精确磁定位技术[J].石油钻采工艺,2024,46(1):60-66,118,8.基金项目
中国石油天然气集团有限公司科技项目"无源磁导向救援井关键技术及配套工具研制"(编号:2021DJ6506) （编号:2021DJ6506）
中国石油集团工程技术研究院有限公司科技项目"无源磁导向仿真模拟实验系统研制"(编号:CPET2022-11S). （编号:CPET2022-11S）
