Gamma Module

The EDS SureShot gamma sensor employs a rugged scintillation counter and photomultiplier mounted in a specially-designed package which provides protection against the high levels of shock and vibration encountered in the drilling environment. EDS’s natural gamma ray sensor module is an add-on to our SureShot Measurement-While-Drilling (MWD) system. The EDS gamma sensor is calibrated to API-standard units, and a wellsite check source is available to verify tool performance in the field or maintenance repair shop. The easy-to-use SureShot surface system scales natural gamma ray data to API units; corrects for borehole size, mud weight and drill collar effects; assigns each point a depth from the depth tracking system; and plots both real-time displays and configurable hard copy logs. Data can be exported in standard industry formats (WITS and LAS). The SureShot MWD downhole system can be programmed to send a combination of gamma ray and tool face data transmissions to allow logging while steering and sliding. A rotation sensor in the directional package enables the tool to optionally transmit only gamma ray data while rotating.