Prospectus re Admission to the Official List - Heritage Oil

RPS EnergyHeritage Oil – Competent Persons Reportmay not seal perfectly. The presence of seeps in Block 3 and in Block 2, close to existing discoveries, alsosupport this hypothesis. The sub-basins and basement structural highs are prospective. There is, however, arisk that traps will be under-filled because of a possibly restricted source kitchen area in the Pakwachsub-basin. However, the prospects mapped in the southern part of this block should receive their oil fromthe Albert Basin via a good migration route.5.4. Geology & Geophysics5.4.1. Kingfisher 1The Kingfisher-1 well encountered a stacked series of sands and shales in the Pleistocene (Figure 25)and confirmed the presence of hydrocarbons in Block 3A. The vertical well and the sidetrack, Kingfisher1A, both flowed hydrocarbons to surface from thin Late Miocene—Pliocene sands. Kingfisher-1 tested alocally developed Early Pliocene (zone P2a) sand (13) . Kingfisher-1A penetrated a water bearing P2a sand.However, Kingfisher-1A also tested oil from three separate sands in Late Miocene—Early PlioceneP1/M6 cycle.Figure 25:Seismic Section through Kingfisher 1 Well22FEB200803421223The Early Pliocene P2a sand tested in Kingfisher-1 is 12m thick. Kingfisher-1A penetrated three oilbearing sands within a 100m interval spanning the Miocene-Pliocene boundary at between 1,520 and1,630 m TVDSS (Figure 26). These sands vary in thickness from 10 to 30 m. No water contacts were seenin any sands(13) Heritage stratigraphic nomenclature107