Wellhead position detection system and method

• Main Authors: QIAO LEI, LAN HAIFENG, ZHU XIAOYU, ZHENG LI, WANG KAILONG, DU WEIQIANG, ZHANG JIZHE, CHE YANG, WANG CHENLONG, YUAN GUANGJIE, LIN SHENGJIE, LIU YISHAN, DONG SHENGXIANG, REN XIANKE, HE AIGUO
• Format: Patent
• Language: Chinese; English
• Published: 21.10.2022
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of exploration, and discloses a wellhead position detection system and method. The system comprises an excitation device, a detection device and a calculation device. Radiating excitation current outwards at the bottom of the first detection well through an excitation device; measuring a magnetic field signal and an acceleration signal generated by upward alternating current of the casing pipe of the target well in the second detection well through the detection device; the calculation device determines a second connecting line vector of the second detection well and the target well according to the magnetic field signal and the acceleration signal; after the excitation device in the first detection well and the detection device in the second detection well are exchanged for secondary measurement, a first connecting line vector of the first detection well and the target well is determined; and determining the wellhead plane position of the target well according to