油气管道惯性测绘内检测及其应用

Inertial surveying internal detection method and its application in oil and gas pipeline

管道完整性管理是确保管道安全、经济运行的重要手段,管道位置参数是管道完整性管理的重要基础数据。油气管道惯性测绘内检测技术,以三维正交的陀螺仪与加速度计组成的惯性测量单元(IMU)为主要测量设备,以地面GPS参考点与里程计数据进行位置与速度修正,能够精确测绘管道中心线坐标,实现管道管理的数字化与可视化。利用获得的高精度中心线坐标参数,能够有效识别、评估由环境因素诱发的管道弯曲应变。将缺陷参数与管道中心线坐标相结合,可实现缺陷的精确定位,生成管道缺陷维修工程图。

Pipeline integrity management is an important means of ensuring pipeline safety and economic operations,and the parameters of pipeline position are important basic data for pipeline integrity the management.Inertial surveying internal detection technology for oil and gas pipeline takes the inertial measuring unit(IMU),composed of 3D orthogonal gyroscopes and accelerometers,as the main measurement equipment and uses ground GPS reference points and mileage data to modify position and speed to precisely survey coordinates of the pipeline center line so as to achieve digitization and visualization of pipeline management.By means of high-precision center line coordinate parameters obtained,the bending strain of pipeline caused by environmental factors can be effectively identified and evaluated.Via a combination of defect parameters and pipeline center line coordinates,precise positioning of defects can be realized to generate engineering drawing for the maintenance of pipeline defects.