BOURARHET SUD

1. BLOCK 230WELLS YEAR RESERVOIRS PETROLEUM RESULTSILM-11997PEDCO-SHDevonianF6 : dryF2 : 1770.7 m 3 Gas + 0.5 m 3 oilDevonianF4 : 0.5 l mud ( S.R)GAH-1 1986F6 : DryZT-11963CREPSRML-1 1984IHSW-1 1989OrdovicianDevonianOrdovicianDevonianOrdovicianDevonianWeak gas flowF2 : salt water (S=158g/l)F4 : salt water (S=53g/l)F6 : fresh water15-25 m 3 /h gasF4 : dryF6 (C3) : dryF6 (C2) : 2 l Oil/CE + 4m 3 fresh waterIV-3 : 2146m 3 /h gas + 2 l gazoline (CE)IV-2 : dryIII-2 : 200 l oil + 1.7m 3 water (S=200g/l)F4 : dryF6 (C3) : 100 l oil (CE)F6 (C2) : 13 m 3 fresh water (CE)TXC-1TXC-2TX-2TXD-11963CFP(A)1963CFP(A)1960CFP(A)1963CFP(A)OrdovicianDevonianDevonianDevonianDevonianIII-2 : 6m 3 water (S=69 g/l)F2 : mud + water (S=54 g/l)F4 : dryF6 : secF2 : dryF4 : dryF6 : 380 l mud + gas and oil /T + 1.7m 3water (S=1.9g/l)F2 : dryF4 : dryF2 : gas and oil / TF4 : oil / TF6 (C3) : oil / TF6 (C2) : 3m 3 water (S=10.2g/l)/TSEALS :Silurian shales ensure the cover of Ordovician reservoirs. Middle and Upper Devonian shales (Frasnian)ensure the cover of Lower Devonian F6 (unit C). F2 reservoir (Strunian) is capped by Carboniferous shales.TRAP STYLES : Structural and combined (diagenetic component).DISCOVERIES : -NUMBER OF PROSPECTS AT THE PRESENT TIME : One prospect in block 231 (TZL).Average drilling depth : 2500 m (unit II : deepest formation).Average of main target (Ordovician unit IV) : 2250 m.