Patent ID: 9181768
Filing Date: 2015-11-10
Classification: E21B,G01V,G05B

Abstract:
1. An apparatus utilizing a magnetic inductive sensor for detecting a plunger arrival at a wellhead, said apparatus comprising: a power supply; a magnetometer system having at least a first axis magnetic field sensor and a second axis magnetic field sensor, wherein axes of said magnetic field sensors are transverse; a microprocessor system adapted to manage and control the magnetometer system, the microprocessor system further comprising electronic memory; the magnetometer system coupled to the microprocessor for measuring a magnetic field value of a first axis of using said first axis magnetic field sensor and a magnetic field value of a second axis using said second axis magnetic field sensor; the microprocessor gathering magnetic field data from said magnetometer system and configured to: wherein one or both of the magnetometer system and the microprocessor are mountably located at an exterior position of a lubricator.