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)

POROSITY

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 (%)

DENSITY

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)

NUCLEAR MAGNETIC RESONANCE

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)

MISCELLANEOUS

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)