Geolog - Surface Logging

The GWD^TM Gas While Drilling Interpretation has been developed by TOTAL and ENI, to provide an accurate and detailed reservoir evaluation using high quality gas data. GEOLOG utilizes it as its reference gas analysis technique.

EQUIPMENT REQUIRED

STANDARD GAS CHAIN - Possible for GWD^TM

ADVANCED GAS CHAIN - Recommended for GWD^TM

Analysis C1 to nC5 in 60 seconds
Complete separation with return to baseline for both C1 and C2 for C1/C2 ratio <180
Saturation limits C1: 100% C2: 30% C3-C5: 15%
Resolution 10 ppm
Minimum detectable value 20 ppm

Analysis C1 to nC5 in 45 seconds
Complete separation with return to baseline for both C1 and C2 whatever the C1/C2 ratio
Saturation limits C1: 100% C2: 100% C3-C5: 15%
Resolution 1 ppm
Minimum detectable value 5 ppm

QGM Gas Trap

FID Chromatograph

CVD (Constant Volume Degasser)

DUALFID^TM Chromatograph