Downhole Geophysical Logging
Standard Wireline Logging Tool Strings
   Triple Combo
   FMS-Sonic
   Borehole Seismics
Downhole Memory Tools
Advanced Piston Corer Temperature (APCT-3): used to obtain formation temperatures needed for calculating heat flow; used during APC coring only
Sediment Temperature 2 (SET2): designed to take temperature measurements in soft sediment
Sediment Temperature Pressure (SETP): designed to take temperature and pressure measurements in soft sediments
Icefield MI5 Digital Borehole Survey Tool: takes magnetic orientation measurements using triaxial accelerometers and magnetometers; used during APC coring only with a nonmagnetic collar
Other Downhole Equipment
Motion Decoupled Hydraulic Delivery System (MDHDS)
Electronic Release System (ERS)
Tools Available Upon Request
The following tools may be made available but need to be requested well in advance of an expedition due to budgetary and/or staff requirements.
- Ultrasonic Borehole Imager (UBI)
- Modular Temperature Tool (MTT)
- Core Barrel Drill String Accelerometer (DSA)
- Water Sampler Temperature Probe (WSTP): takes column water samples in the hole
Logging While Drilling (LWD)/Measurement While Drilling (MWD)
LWD tools are used when hole conditions are anticipated to be unsuitable for conventional wireline logging. MWD tools are used when real time acquisition of downhole data is required (e.g., to monitor borehole fluid pressure for safety). See the Schlumberger web site for current available tools.
LWD/MWD tools are not part of the standard tool suite, require substantial additional costs, and need to be identified well in advance of the expedition (i.e., during the proposal phase). Availability on an expedition may require PIs obtaining external funding.
Workstations
Two workstations are available for shipboard data plotting and analysis, each with the following software:
- Petrel E&P Software (Schlumberger)
- Techlog Wellbore Software Platform (Schlumberger)
- Seisee (DMNG): freeware to quickly display and examine seismic data