SITE: 1
PRIORITY: 1
POSITION: 32°43´S, 57°16´E
WATER DEPTH: 700 m
SEDIMENT THICKNESS: 0 m
TOTAL PENETRATION: 60 m
SEISMIC COVERAGE:
Objectives: 1. Characterize operating parameters, i.e., flow rates, pump pressures, weight on bit, of the hammer drill as seen from the drill floor. 2. Characterize hammer drill spudding capability on sloped outcroppings. 3. Test entire hammer drill system by drilling in 20 - 40 m of 13-3/8" casing in a fractured hard
rock environment with little or no overlying sediment or talus and with little or no slope.
Drilling Program: Deploy the hammer drill only. Drill several shallow (1-3 m) test boreholes while characterizing the flow rates, pump pressures and drill bit revolutions per minute required to spud and advance the borehole efficiently. Drill several shallow (1-3 m) test boreholes on sloped outcrops. Deploy entire hammer drill system and perform the first full scale drill-in test.
Logging and Downhole Operations: None
Nature of Rock Anticipated: Gabbro and/or peridotite
SITE: 2
PRIORITY: 1
POSITION: 32°36´S, 57°15´E
WATER DEPTH: 2800 m
SEDIMENT THICKNESS: 0 m
TOTAL PENETRATION: 60 m
SEISMIC COVERAGE:
Objectives: 1. Test hammer drill system by drilling in 40 - 60 m of 13-3/8" casing in a sloped fractured hard
rock environment with little or no overlying sediment or talus.
Drilling Program: Deploy entire hammer drill system and perform second full scale drill-in test.
Logging and Downhole Operations: None
Nature of Rock Anticipated: Gabbro and/or peridotite
SITE: 3
PRIORITY: 1
POSITION: 32°43´S, 57°11´E
WATER DEPTH: 2800 m
SEDIMENT THICKNESS: 0 m
TOTAL PENETRATION: 80 m
SEISMIC COVERAGE:
Objectives: 1. Test hammer drill system by drilling in 60 - 80 m of 13-3/8" casing in fractured hard-rock with overlying talus.
Drilling Program: Deploy entire hammer drill system and perform third full scale drill-in test.
Logging and Downhole Operations: None
Nature of Rock Anticipated: Gabbro and/or peridotite