Medco Rig Schedule 2011 Rev2 24sep'10

DRILLING RIG SCHEDULE 2008 JAN FEB Q1 MAR APR DRILLING RIG SCHEDULE 2010 2010 MAY Q2 JUN JUL AUG Q3 SEP OCT Rev. 13 DATE : 24 Sept '10 NOV Q4 DEC'2010 RIMAU RIMAU KAJI SEMOGA SWF 2010-1 3300 FT MIRU LEMATANG KAJI SEMOGA 1 DRECO ( 800-HP ) OWN RIG Expl.& Testing LANGKAP LANGKAP 2010-1 2500 FT MIRU DEV-Oil KALABAU LKP 2010-2 2500 FT MIRU & SILO DEV-Oil RIMBABAT SWF 2010-2 3300 FT LKP DEEP-1 ALABAU (09-1) K 3400 FT 3000 ft Expl. & TestingMOB & MIRU - Oil DEV KWF 2010-3 KWF 2010-4 RIMBABAT 2010-1 200 FT 200 FT MIRU CONMOBCOND & MIRU MIRU DEV-Oil KWF 2010-4 KWF 2010-3 Re-entry SINGA-1 3300 FT 3300 FT 12,500 FT MOB & MIRU DEV-Oil MIRU DEV-Oil MIRU DEV - GAS DEV-Oil MIRU DEV-Oil S&CS CBM SEKAYU BLOCK SOKA B 2010-1 3450 FT DEV-Oil MIRU & SILO DEV-Oil RIMAU KAJI SEMOGA SE-1 1100 FT Pre MIRU 2 EMSCO (550 HP) OWN RIG KAJI SEMOGA KWF 2010-2 3300 FT MIRU DEV-Oil KWF 2010-1 3300 FT MIRU DEV-Oil WSR MIRU KALISA P&A MIRU SOKA SOKA H 2010-1 3450 FT MOB & MIRU SOKA SOKA 2010-4 3450 FT MIRU DEV-Gas SOKA D 2010-3 3450 FT MIRU DEV-Gas FARIZ FARIZ 2010-1 SE-1 3450 FT MIRU DEV-Gas MIRU SE-4 SE-3 1825 FT KS 343 Kalisa-1 1100 FT 1980 FT KWF 2010-5 SWF 2010-3 SWF 2010-4 3300 FT 3300 FT 3300 FT DEV-Oil MIRU DEV-Oil MIRU DEV-Oil Mob & MIRU Pre MIRU Preset MIRU S&CS S&CS SIDA SIDA-1 3150 FT Expl. & Testing MOB & MIRU Expl. & Testing 3 SPA-9 RIG (550 HP) PT. SARIPARI META LICA META 2010-2 4800 FT MIRU DEV-Oil META 2010-1 4800 FT MOB & MIRU DEV-Oil LICA-1 4630 FT MOB & MIRU LEMATANG 4 AR-8 RIG ( 2000-HP ) Land Rig Re-entry SINGA-1 12,500 FT MIRU DEV - GAS BENGARA I BLOK - PSC 5 TBN RIG ( 750-HP ) Land Rig MOB & MIRU SOUTH SEBUKU -2 5,500 FT EXPL. & Testing 6 TBN RIG (750 HP) Land Rig CBM SEKAYU BLOCK 7 TBN RIG (350 HP) CBM Rig SE-4 Mob & MIRU Pre SE-3 Pre SE-1 2,500 FT Preset, Expl & Testing CBM SE-3 3,300 FT Expl & Testing CBM SE-4 3,350 FT Expl & Testing RIG RELEASE TARAKAN - PSC 8 TBN RIG (1000 HP) MENGATAL (2008-1) 6,500 FT MIRU DEV (Incl COMPL) - Oil & Gas MIRU MBR (2009-1) 6,500 FT DEV (Incl COMPL) - Oil & Gas RIG RELEASE BENGARA I BLOK - PSC 9 TBN RIG (750 HP) MOB & MIRU SOUTH SEBUKU -2 5,500 FT 10 TBN RIG (350 HP) CBM SEKAYU BLOCK 10 JML#01 RIG (250 HP) Land Rig SE-4 490 FT Mob & MIRU Pre CBM SEKAYU BLOCK 11 TBN RIG (250 HP) Coring Rig CBM SE-1 2,100 FT Expl & Testing CBM SE-3 3,300 FT Expl & Testing CBM SEKAYU BLOCK 12 TBN RIG (250 HP) Re-entry CBM SE-2 MIRU RE-ENTRY DRILLING RIG SCHEDULE 2008 JAN FEB Q1 MAR APR DRILLING RIG SCHEDULE 2010 2010 MAY Q2 JUN JUL AUG Q3 SEP OCT Rev. 13 DATE : 24 Sept '10 NOV Q4 DEC'2010 11 TBN RIG (2000 HP) 12 TBN RIG (2000 HP) JOB SIMENGGARIS 13 SPA 101 (2000 HP) SSBK-4 7775 ft MIRU DRILLING RIG SCHEDULE 2008 JAN FEB Q1 PLANNING BASED ON DRILLING COORDINATION MEETING: MAR APR DRILLING RIG SCHEDULE 2010 2010 MAY Q2 24 Sep '10 BENGARA 1 0 1 TOMORI 1 1 2 SIMENGGRS 0 0 0 BLOCK - A 0 0 0 NUNUKAN 0 0 0 CBM 4 0 4 TOTAL 10 24 34 JUN JUL AUG Q3 SEP OCT Rev. 13 DATE : 24 Sept '10 NOV Q4 DEC'2010 2010 EXPL DEV. TOTAL SCS 2 7 9 RIMAU 2 13 15 TARAKAN 0 2 2 MERANGIN SEMBAKUNG LEMATANG 0 0 0 0 0 0 0 1 1 LEGEND 0 location ready to drill 3 3 contingency wells 3 3 w/o POD Approval w/o location ACTUAL as per 2010 EXPL DEV. TOTAL 24 Sep '10 SCS RIMAU 0 5 5 2 8 10 TARAKAN 0 0 0 MERANGIN SEMBAKUNG LEMATANG 0 0 0 0 0 0 0 0 0 BENGARA 0 0 0 TOMORI 1 1 2 SIMENGGRS 0 0 0 BLOCK - A 0 0 0 NUNUKAN 0 0 0 CBM 0 0 0 TOTAL 3 14 17 Drilling on progress Well has been drilled Workover / Wellservice 24 DRILLING RIG SCHEDULE 2008Sept '10 DRILLING RIG SCHEDULE 2011 2011 FEB Q1 MAR APR MAY Q2 JUN JUL AUG Q3 SEP OCT Rev. 2 DATE : 24 Sept '10 2010 JAN NOV Q4 DEC'2011 RIMAU 1 DRECO ( 800-HP ) OWN RIG KAJI SEMOGA RUMBI KWF 2010-6 3300 FT MIRU DEV-Oil KWF 2011-1 3300 FT MIRU DEV-Oil Kalabau 2011-1 RUMBI-2 3300 FT MIRU DEV-Oil MIRU Expl. & Testing KWF 2011-3 3300 FT MIRU DEV-Oil KWF 2011-5 3300 FT MIRU DEV-Oil KWF 2011-7 3300 FT MIRU DEV-Oil SWF 2011-1 3300 FT MIRU DEV-Oil SWF 2011-3 3300 FT MIRU DEV-Oil SWF 2011-5 3300 FT MIRU DEV-Oil SWF 2011-7 3300 FT MIRU DEV-Oil SWF 2011-9 3300 FT MIRU DEV-Oil SWF 2011-11 3300 FT MIRU DEV-Oil S&CS 2 EMSCO (550 HP) OWN RIG SWF 2010-4 SWF 2010-5 3300 FT 3300 FT DEV-Oil MIRU DEV-Oil DEV-Oil SWF 2010-6 3300 FT MIRU DEV-Oil KAJI SEMOGA KIKIM-3 3600 FT MOB & MIRU Expl. & Testing NORTH TEMELAT TEMELAT EKA N. TEMELAT 2 2200 FT MOB & MIRU TEMELAT 2011-1 EKA 2011-1 S. 2000 FT 3000 FT DEV-Oil MOB & MIRU DEV-Oil Exp & Testing MIRU 3 SPA-9 RIG (550 HP) PT. SARIPARI Expl. & Testing DEV-Oil KWF 2011-2 3300 FT MIRU DEV-Oil KWF 2011-4 3300 FT MIRU DEV-Oil KWF 2011-6 3300 FT MIRU DEV-Oil KWF 2011-8 3300 FT MIRU DEV-Oil SWF 2011-2 3300 FT MIRU DEV-Oil SWF 2011-4 3300 FT MIRU DEV-Oil SWF 2011-6 3300 FT MIRU DEV-Oil SWF 2011-8 3300 FT MIRU DEV-Oil SWF 2011-10 3300 FT MIRU DEV-Oil SWF 2011-12 3300 FT MIRU DEV-Oil SCS 4 AR-8 RIG ( 2000-HP ) Land Rig Re-entry SINGA-4 12,500 FT RIG RELEASEMIRU DEV - GAS RIG RELEASE MOB & MIRU LAGAN DEEP-1 11,500 ft EXPL. & Testing RIG RELEASE 5 TBN RIG ( 750-HP ) Land Rig RIG RELEASE MERANGIN-1 6 TBN RIG (750 HP) Land Rig SOLO-1 8000 FT MOB & MIRU EXPL & TESTING RIG RELEASE 7 TBN RIG (350 HP) CBM Rig TARAKAN 8 TBN RIG (1000 HP) MBR 2011-1 4000 ft Mob & MIRU DEV-Oil PINASTI-1 Mob & MIRU EXPL-TESTING BENGARA I BLOK - PSC 9 TBN RIG (750 HP) SOUTH SEBUKU -2 5,500 FT EXPL. & Testing DEV-Oil RIMAU 10 TBN RIG (350 HP) ILIRAN HIGH TALA-1 600 FT Mob & MIRU TALA-2 600 FT TALA-3 600 FT TABA-1 600 FT TABA-2 600 FT RIG RELEASE DEV-Oil Mob & MIRU DEV-Oil Mob & MIRU DEV-Oil Mob & MIRU DEV-Oil Mob & MIRU DEV-Oil 10 JML#01 RIG (250 HP) Land Rig 11 CBM SEKAYU BLOCK TBN RIG (250 HP) Coring Rig Expl & Testing RIMAU ILIRAN HIGH CBM SE-4 3,350 FT Expl & Testing RIG RELEASE SHO-1 1800 FT Mob & MIRU SHO-2 1800 FT DEV-Oil Mob & MIRU DEV-Oil RIG RELEASE CBM SEKAYU BLOCK 12 TBN RIG (250 HP) Re-entry CBM SE-1 MIRU RE-ENTRY BLOK A 24 DRILLING RIG SCHEDULE 2008Sept '10 DRILLING RIG SCHEDULE 2011 2011 FEB Q1 MAR APR MAY Q2 JUN JUL AUG Q3 SEP OCT Rev. 2 DATE : 24 Sept '10 2010 JAN NOV Q4 DEC'2011 11 TBN RIG (2000 HP) MATANG-1 9,500 ft MIRU EXPL. & Testing AR-1 RIG RELEASE & MIRU Re-entry AR-2 9,500 ft MIRU Dev. BLOK A 12 TBN RIG (2000 HP) JR-1 3300 FT MIRU DEV-Oil JR-2 3300 FT MIRU DEV-Oil JR-3 3300 FT MIRU DEV-Oil JR-4 3300 FT MIRU DEV-Oil JOB SIMENGGARIS 13 SPA 101 (2000 HP) DEV - GAS SSBK-5 7775 ft MIRU DEV - GAS SSBK-6 7775 ft MIRU DEV - GAS 24 DRILLING RIG SCHEDULE 2008Sept '10 DRILLING RIG SCHEDULE 2011 2011 FEB Q1 MAR APR MAY Q2 24 Sept 2010 TOMORI 0 0 0 SIMENGGRS 0 3 3 BLOCK - A 1 6 7 NUNUKAN 0 0 0 CBM 1 0 1 TOTAL 15 38 53 JUN JUL AUG Q3 SEP OCT Rev. 2 DATE : 24 Sept '10 2010 JAN NOV Q4 DEC'2011 PLANNING BASED ON DRILLING COORDINATION MEETING: 2011 location ready to drill EXPL DEV. TOTAL SCS 2 2 4 RIMAU 8 24 32 TARAKAN 2 1 3 MERANGIN SEMBAKUNG LEMATANG BENGARA 1 0 1 0 0 0 0 1 1 0 1 1 LEGEND 0 location ready to drill 3 3 contingency wells 3 3 w/o POD Approval w/o location ACTUAL as per 2011 EXPL DEV. Well has been drilled Workover / Wellservice TOTAL 30 Aug '10 SCS RIMAU 0 0 0 0 0 0 TARAKAN 0 0 0 MERANGIN SEMBAKUNG LEMATANG BENGARA 0 0 0 0 0 0 0 0 0 0 0 0 TOMORI 0 0 0 SIMENGGRS 0 0 0 BLOCK - A 0 0 0 NUNUKAN 0 0 0 C B 0 0 0 TOTAL 0 0 0 Drilling on progress Well has been drilled Workover / Wellservice