Downhole Logging Lab Notebook
- Former user (Deleted)
- jr_mateo
- jr_marone
Issues
Tasks
Archive of Tasks & Issues
Comparison of magnetic susceptibility data from the Magnetic susceptibility Sonde (MSS) used in wireline downhole logging and the Bartington sensors used to measure wholerounds (MSL) and section halves (MSP).
Jun 3, 2021 Techlog license has issues with the registered MAC address.
Expedition Notes
Notes
Related Literature
Maul, G. A. and Bishop, J. C., 1970, Mean Sounding Velocity. A Brief Review, International Hydrographic Review, Vol. 47 (2), 85-92 (July 1970) (pdf)
Haldorsen, J.B.U., Johnson, D. L., Plona, T., Sinha, B., Valero, H. P., Winkler, K., 2006, Borehole Acoustic Waves, Oilfield review 18 (1), 34-43 (pdf)
Resources
General
Downhole Tools
Used to obtain formation temperatures needed for calculating heat flow; used during APC coring only
Designed to take temperature measurements in soft sediment
Designed to take temperature and pressure measurements in soft sediments
Takes magnetic orientation measurements using triaxial accelerometers and magnetometers; used during APC coring only with a nonmagnetic collar
Captures water at a predetermined depth downhole to be sampled under pressure on-board.
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.
Other Downhole Equipment
Motion Decoupled Hydraulic Delivery System (MDHDS)
Electronic Release System (ERS)
Standard Wireline Logging Tool Strings
Logging data acronyms (IODP+SLB Oilfield Data Arrays.xlsx)
Triple Combo
Thermal effects on bulk density measurements
FMS-Sonic
Borehole Acoustic Waves (Haldorsen et al., 2006)
Borehole Seismics
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.
Water Sampler Temperature Probe (WSTP): takes column water samples in the hole
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
VIT Deployed Tools
CTD (Conductivity, Temperature and Depth)
A MinosX CTD equipped with CT-Xchange and P-Xchange sensor is attached to the VIT frame to profile the conductivity (salinity) and temperature of the water column.
Niskin Water Sampler