Offshore Tanzania An Exciting g New Deepwater p Province in East Africa Background Regional Geology Petroleum Geology Seismic Examples Summary OPHIR ENERGY PLC 1
SADR x4 Operator Somaliland x1 Operator From start up in 2004 Ophir has become one of the leading deepwater acreage holders in Africa with 16 interests across 8 jurisdictions. First operated deepwater AGC x1 drilling…
Recent surge of interest in East Africa in the past few years. Experienced and committed Operators in adjacent blocks. The region has experienced a rapid increase in operational activity in recent months. Ophir has acquired 3 x…
Karroo continental rifting: Late Carboniferous to Early Jurassic. Gondwanaland break-up: West Somali Spreading Centre 165 to 120Ma, Madagascar drifted south along DFZ until 120Ma. Development of passive margin successor basins: Mafia…
Major change in signature across the Davie Fracture Zone (DFZ), separating continental and oceanic crust. Continental crust dominated by N-S trending anomalies that appear to step BLOCK 4 BLOCK 3 across WSW-ENE trending…
BLOCKS 1/3/4 Mafia Deep Offshore Basin DELTAIC PROGRADATION MEGASEQUENCE LATE R DRIFT EARLY S DRIFT Stratigraphy 6
Pemba Is. Pemba 5 Makarawe-1 PEMBA-ZANZIBAR TUNDAUA BASIN SEEP Zanzibar Is. Is Clear evidence for a working petroleum INDIAN system on- and offshore Tanzania: Dar es Salaam OCEAN Gas discoveries in Songo Songo, Mnazi DAR ES…
Tertiary (Eocene): - Oil-prone in Pemba-5. X/9 - Msimbati and Mnazi Bay liquids - Likely y immature in DW Southern Tanzania other than far south (Block ( 1). ) U. Cretaceous: - Possible Campanian source though no compelling…
Oligocene 200 ms 500 ms U.Cret 5km 2km Tertiary Deepwater slope channels and basin floor fans - likely to be Miocene sand-prone having been fed by the Rufiji and Rovuma palaeo- drainage systems. Inboard Oligo-Miocene…
Tertiary Drainage systems development with uplift of East Africa. Provenance for deepwater consists of: Archaean Tanzanian craton; Neo-Proterozoic Mozambique Belt; and Karoo rift sediments. Quartz- and felsic-rich sands…
DEPTH SECTION LOW-RELIEF 4WDC TERTIARY DELTA SLOPE SANDS eg Mnazi Bay TERTIARY CHANNEL-LEVEE COMPLEXES DIAPIR U.CRET. 500 m FLANK PLAYS 2km Structure and Play Examples 11
Geoschematic tie to Mnazi Bay 12
TERTIARY DRAPE Diapiric structures UPPER CRETACEOUS CHANNEL SANDS UPPER CRETACEOUS CHANNEL SANDS LOWER CRETACEOUS Fault SHALLOW WATER SANDS Blocks Structure and Play Types 13
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Copyright - FOP Image courtesy of WesternGeco M/V Geco Diamond Image courtesy of Fugro-GEOS More than 8,000km of 2D seismic data acquired, q p processed with interpretation. 2,950sqkm 3D seismic acquisition currently in…
Ophir has entered into long term rig share agreements over the period 2008 to 2011. One of the rigs included in these agreements is the West Polaris which will have the capacity to drill all of the deepwater prospects in Blocks…
Virgin basin currently experiencing an explosion of exploration activity. Proven inboard oil-prone source rocks interpreted to extend into the deep water. Jurassic maturity uncertain in the deepwater. Nearby wells have produced…
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