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CHOTT EL JERID 2D ACQUISITION - 2022
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Overall project area:
▪ 1,600 km2 of sebkha covered with explosives
▪ 1,000 km2 of sand dunes covered with vibrators
Main challenges:
➤Logistics in sebkha for equipment and personnel transportation
➤Number of drilling teams (20 drilling teams to supply)
➤Water management for drilling teams
➤Uneven ground conditions and inaccessible areas
840 km explosives + 210 km vibros
Project figures: drilling
▪ 20 drilling teams
▪ 220 points drilled per day(average)
▪ 16,800 points drilled
▪ 220,000 meters drilled
▪ 235,000 meters of casing used
MORE ABOUT CHOTT EL JERID 2D ACQUISITION - 2022
Autonomous shooting technique (time slot)
▪ 6 loading teams
▪ 6 shooting teams
▪ 240 SP per day
▪ 50 tons of explosives use
Sand dunes area, 100% line clearing required
▪ 2 fleets of 2 vibrators
▪ 380 VP per day
▪ 5 upholes drilled with Fraste drilling rig
▪ 1,200 stations harvested daily
▪ Real-time QC in the field
▪ Ambient noise monitoring
▪ SEGD file for each SP populated along the data harvesting
Acquisition system: Sercel WiNG nodal system (6000 channels) Light drilling: 16 Balco 500 tractor, 10 Balco 200 tracks mounted Heavy drilling (Up hole): 1 Fraste drilling rig
Vibro: 5 Sercel Nomad 65 Neo equiped with Sercel VE 464 Specific vehicles: 10 buggy 4x4, 10 Kubota on tracks, 15 Polaris Vehicles: 5 Buses 4x4 and 30 light vehicles
Staging Camp: offices, clinic, workshops, water & diesel storage
➤Drilling: 20 teams (Balco 500 Tractor + Balco 200C) – 220 hole/d
➤Explosive: 6 loading teams + 6 shooting teams – 240 SP/d
➤Vibro: 2 fleets of 2 N65 (flip-flop) – 380 VP/d
Uphole & LVL: 10
Expat International: 10 => Crew manager, HSE Advisor, Chief Observer, Geophysicist, drilling supervisor (Ex CGG)
Local Senior Staff: 25 => Tunisian experienced senior staff (Ex CGG)
Local labors : 155 => Employed localy (including subcontracted)
Total : 190
PROJECTS
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