The Gyroscopic Borehole Survey (GBS) is a north-seeking gyro tool designed to deliver highly accurate non-magnetic deviation surveys in magnetically disturbed environments (i.e. inside casing, drill pipe or magnetic rock). This tool can be configure in standard wireline mode with a surface control box for real-time data acquisition, or with an optional battery powered memory module which allows the tool to used without conductor wireline and accessory gear.
Magnetic Multishot Survey
The open-hole magnetic multishot survey is a critical to know the wellbore position before running casing or liner, and extended operational performance over conventional electronic multishot products. The Miniature Multishot Tool (MMT) provides definitive survey information, corrected for magnetic interference from the drilling assembly, before the well is cased - in time to make any directional course corrections.
For specification, please click here: EMS Specification
This tool using SUPERTRAX silicone oil damped accelerometer
(triaxial). And high accuracy triaxial manetometers.