Prospectus re Admission to the Official List - Heritage Oil

RPS EnergyHeritage Oil – Competent Persons Report5.4.2. MappingHeritage has mapped 4 horizons that have been reviewed and modified by RPS: Kingfisher P1/M6—interpretation of this unit is fairly robust over the 3D area. Seismic data qualitydrops around the faults in Kingfisher but deeper units show the general trend of the data. RPS hasreinterpreted the area and modified the fault interpretation in the area of Kingfisher Northand Pelican Kingfisher basal sand—Interpretation of this unit is fairly robust over the Kingfisher 3D. Again, RPShas modified the fault interpretation in the area around Kingfisher North and Pelican Pliocene Light Blue—Interpretation of this unit is good over the area mapped, although more faultsexist than those interpreted by Heritage G: Near Top Zone 2—Seismic quality around the leads is very poor, consequently fault and horizoninterpretation is open to question. Structures formed are caused by slight inflections in theinterpretation around faults that may be seismic artefacts.5.4.3. ProspectivityIn addition to Kingfisher, Heritage has identified two further prospects along the basin bounding fault:Kingfisher North and Pelican. RPS has further separated the Pelican structure into three segments; PelicanMain, Pelican North and Pelican Shallow. The eastern area of the Pelican prospect is in a complexstructural zone where the basin bounding fault is met by a parallel intra-basinal fault. The Pelican Northand Shallow prospects are separated by significant vertical offset from the main Pelican prospect. A furtherprospect, Pelican West, is also a three-way dip structure but bounds the intra-basinal fault that convergeswith the main basin-bounding fault at Pelican. Heritage has identified a further three leads from 2Dseismic data. These leads are broad, shallow anticlines and 3 way dip closures against intra-basinal faults.Each prospect and lead in Block 3A has dual targets in the Pliocene and Miocene.Heritage has used time structure maps to determine the extent of prospects and a simplified area-thicknessapproach has been used to calculate GRV. RPS has re-gridded their modified TWT horizons and createddepth maps using a simple depth conversion using average velocities calculated from the time-depthrelationship seen at Kingfisher-1.Block 1 lies at the Northern end of the Albert Basin where the Nile exits Lake Albert. There is no wellcontrol in the block. The block lies updip of the Lake Albert source kitchen, and is at the focal point ofpotential hydrocarbon migration from the basin depocentre. Heritage has identified four very shallow (lessthan 600 m) and potentially very large prospects in the area of existing seismic coverage in Block 1. Theseare named Buffalo, Crocodile, Giraffe and Hartebeest (Figure 28).109