CHEVRON GULF OF MEXICO GAS HYDRATE

JIP DRILLING PROGRAM

ACRONYMS USED FOR SCHLUMBERGER LWD-MWD TOOLS

ADN Azimuthal Density-Neutron

**ARC **Array
Resistivity Compensated

**ECO **Ecoscope

**MWD **Measurement-While-Drilling

NMR Nuclear Magnetic Resonance

GVR (formerly RAB)
Resistivity-at-the-Bit

ACRONYMS AND UNITS USED FOR LWD-MWD SCHLUMBERGER LOGS

RESISTIVITY

__ARC (0.1524 m Sampling rate)__

__
__

**P16B** Phase Shift Resistivity Blended, 16 in. (ohmm)

**P22B** Phase Shift Resistivity Blended, 22 in. (ohmm)

**P28B** Phase Shift Resistivity Blended, 28 in. (ohmm)

**P34B** Phase Shift Resistivity Blended, 34 in. (ohmm)

**P40B** Phase Shift Resistivity Blended, 40 in. (ohmm)

**P16H** Phase Shift Resistivity, 2 MHz, 16 in (ohmm)

**P22H** Phase Shift Resistivity, 2 MHz, 22 in (ohmm)

**P28H** Phase Shift Resistivity, 2 MHz, 28 in (ohmm)

**P34H **Phase Shift Resistivity, 2 MHz, 34 in (ohmm)

**P40H** Phase Shift Resistivity, 2 MHz, 40 in (ohmm)

**P16L** Phase Shift Resistivity, 400 KHz, 16 in (ohmm)

**P22L** Phase Shift Resistivity, 400 KHz, 22 in (ohmm)

**P28L** Phase Shift Resistivity, 400 KHz, 28 in (ohmm)

**P34L** Phase Shift Resistivity, 400 KHz, 34 in (ohmm)

**P40L** Phase Shift Resistivity, 400 KHz, 40 in (ohmm)

__ARC (0.1524 m Sampling Rate)__

__
__

**A16B **Attenuation Resistivity Blended, 16 in. (ohmm)

**A22B** Attenuation Resistivity Blended, 22 in. (ohmm)

**A28B** Attenuation Resistivity Blended, 28 in. (ohmm)

**A34B** Attenuation Resistivity Blended, 34 in. (ohmm)

**A40B** Attenuation Resistivity Blended, 40 in. (ohmm)

**A16H **Attenuation Resistivity, 2 MHz, 16 in. (ohmm)

**A22H** Attenuation Resistivity, 2 MHz, 22 in. (ohmm)

**A28H** Attenuation Resistivity, 2 MHz, 28 in. (ohmm)

**A34H** Attenuation Resistivity, 2 MHz, 34 in. (ohmm)

**A40H** Attenuation Resistivity, 2 MHz, 40 in. (ohmm)

**A16L **Attenuation Resistivity, 400 KHz, 16 in. (ohmm)

**A22L** Attenuation Resistivity, 400 KHz, 22 in. (ohmm)

**A28L** Attenuation Resistivity, 400 KHz, 28 in. (ohmm)

**A34L** Attenuation Resistivity, 400 KHz, 34 in. (ohmm)

**A40L** Attenuation Resistivity, 400 KHz, 40 in. (ohmm)

__GVR (0.03048 m Sampling Rate)__

** **

**BDAV** Deep Resistivity Average (ohmm)

**BMAV** Medium Resistivity Average (ohmm)

**BSAV** Shallow Resistivity Average (ohmm)

**RBIT** Bit Resistivity (ohmm)

**RING** Ring Resistivity (ohmm)

__ADN (0.1524 m Sampling Rate)__

** **

**TNPH** Thermal Neutron Porosity (%)

__ECOSCOPE (0.1524 m Sampling Rate)__

__
__

**TNPH** Thermal Neutron Porosity (%)

**BPHI** Best Thermal Neutron Porosity, Average (%)

__ADN and ECOSCOPE (0.1524 m
Sampling Rate)__

** **

**DRHO **Density Correction (g/cm3)

**DRRT** Correction for rotational density (g/cm3)

**IDDR **Image Derived Density Correction g/cm3)

**IDPE **Image Derived Photoelectric Effect (barns/e^{-})

**IDRO **Image Derived Bulk Density (g/cm3)

**PEF** Photoelectric Effect (barns/e^{-})

**RHOB** Bulk Density (g/cm3)

** **

**GAMMA RAY** (including
Spectral Gamma Ray)

__
__

__GVR (0.1524 m Sampling Rate)__

** **

**GR** RAB Gamma Ray (gAPI units)

** **

** **

**CALIPER**

__
__

__ADN and ECOSCOPE (0.1524 m
Sampling Rate)__

** **

**DCAL** Differential Caliper (in)

**DCAV** Differential Caliper Average (in)

__
__

__NMR (0.1524 m Sampling Rate)__

** **

**BFV_T2** Bound Fluid Volume (%)

**FFV_T2** Free Fluid Volume (%)

**MRP_T2 **Magnetic Resonance Porosity (%)

**T2** T2 Distribution (%)

**T2LM_T2** T2 Logarithmic Mean (ms)

__ADN (0.1524 m Sampling Rate)__

** **

**DTAB** ADN Density Time after Bit (s)

**NTAB** ADN Neutron Time after Bit (s)

**ROP5_RM** Rate of Penetration, average over last 5 ft (m/hr)

**RPM** Tool Rotational Speed (rpm)

__
__

__ECOSCOPE (0.1524 m
Sampling Rate)
__

** **

**AGTM** ARC Gamma Ray Time After Bit (s)

**ARTM** ARC Resistivity Time After Bit (s)

**ROP5_RM** Rate of Penetration, average over last 5 ft (m/hr)

**RPM** Tool Rotational Speed (rpm)

**TAB_DEN** Density Time after Bit (s)

**TAB_NEU** Neutron Time after Bit (s)

__
__

__GVR (0.1524 m Sampling Rate)__

** **

**B1TM** RAB Shallow Resistivity Time after Bit (s)

**B2TM** RAB Medium Resistivity Time after Bit (s)

**B3TM** RAB Deep Resistivity Time after Bit (s)

**GRTK** RAB Gamma Ray Time after Bit (s)

**RBTM
**RAB Bit Resistivity Time After Bit (s)

**ROP5_RM** Rate of Penetration, average over last 5 ft (m/hr)

**RPM** Tool Rotational Speed (rpm)

**RTIM
**RAB Ring Resistivity Time after Bit (s)

__Temperature and Pressure (0.1524
m Sampling Rate)__

**DHAP
**Downhole Annulus Pressure (psi)

**DHAT**
Downhole Annulus Temperature (degC)

ACRONYMS USED FOR SCHLUMBERGER WIRELINE TOOLS

DSI Dipole sonic Imager

GPIT General Purpose Inclinometer Tool

**SGT **Scintillation
Gamma Tool

**VSI **Vertical Seismic
Imager

ACRONYMS AND UNITS USED FOR SCHLUMBERGER WIRELINE LOGS

** **

__DSI
(0.1524 m Sampling Rate)__

** **

**DT1** Delta-Time Shear, Lower Dipole (microsec/ft)

**DT2** Delta-Time Shear, Upper Dipole (microsec/ft)

**DTCO** Delta-Time Compressional (microsec/ft)

**VS1** Shear Velocity, Lower Dipole (from DT1, km/s)

**VS2** Shear Velocity, Upper Dipole (from DT2, km/s)

** VCO** Compressional Velocity (from DTCO, km/s)

__GPIT
(0.1524 m Sampling Rate)__

**AX** Acceleration on X Axis (m/s2) ?

**AY** Acceleration on Y Axis (m/s2)

**AZ** Acceleration on Z Axis (m/s2)

**FINC** Inclination (deg)

**FNOR** Total
Moment (oer)

**FX** Magnetic
Field On X Axis (oer)

**FY** Magnetic
Field On Y Axis (oer)

**FZ** Magnetic Field On Z Axis (oer)

**HAZI** Hole Azimuth (deg)

**P1AZ** Pad One Azimuth (deg)

**RB** Relative Bearing (deg)

__SGT
(0.1524 and 0.03048 m Sampling Rate)__

** **

**ECGR** Environmentally Corrected Gamma Ray (gAPI)

**EHGR** High Resolution Environmentally Corrected Gamma Ray
(gAPI)

__Miscellaneous
(0.1524 m Sampling Rate)__

**CS** Cable
Speed (m/hr)

**DF** Drilling Force (lb)

**ETIM** Elapsed Time (s)

**TENS** Cable Tension (lb)