Prospectus re Admission to the Official List - Heritage Oil

RPS EnergyHeritage Oil – Competent Persons ReportTABLE OF CONTENTS1. DESCRIPTION OF ASSETS ................................................ 741.1. Overview ........................................................... 741.2. Liabilities .......................................................... 772. METHODS USED IN THIS REPORT ......................................... 772.1. General ............................................................ 772.2. Reserves and Resource Classification ...................................... 772.3. Risk Assessment ..................................................... 772.3.1. Contingent Resources ............................................. 772.3.2. Prospective Resources (Exploration Prospects) ........................... 782.4. Uncertainty Estimation ................................................. 783. OMAN BLOCK 8 ........................................................ 783.1. Overview ........................................................... 783.2. Bukha Field ......................................................... 793.2.1. Database ...................................................... 793.2.2. Geology and Geophysics ........................................... 793.2.3. In Place Volumes ................................................ 803.2.4. Petroleum Engineering ............................................ 803.2.5. Interaction with the West Bukha Field ................................. 823.3. West Bukha Field ..................................................... 833.3.1. Database ...................................................... 833.3.2. Geology & Geophysics ............................................ 833.3.3. In Place Volumes ................................................ 853.3.4. Petroleum Engineering ............................................ 874. ZAPADNO CHUMPASSKOYE ............................................... 934.1. Data Available ....................................................... 944.2. Geology ............................................................ 944.2.1. Regional Setting ................................................. 944.2.2. Zapadno Chumpasskoye Field ....................................... 944.2.3. Petrophysics .................................................... 954.3. In Place Volumes ..................................................... 974.4. Petroleum Engineering ................................................. 984.4.1. Reservoir Fluid Properties .......................................... 984.4.2. Well Performance & Deliverability .................................... 984.4.3. Development Plan (Subsurface) ...................................... 994.4.4. Recovery Mechanisms ............................................. 1004.4.5. Production Profiles ............................................... 1014.5. Facilities and Costs ................................................... 1055. UGANDA—BLOCKS 1 & 3A ................................................ 1055.1. Overview ........................................................... 1055.2. Data Available ....................................................... 1055.3. Geological Setting .................................................... 1065.4. Geology & Geophysics ................................................. 1075.4.1. Kingfisher 1 .................................................... 1075.4.2. Mapping ....................................................... 1095.4.3. Prospectivity .................................................... 1095.5. Volumetrics ......................................................... 1105.6. Other Prospectivity ................................................... 1135.7. Petroleum Engineering ................................................. 1145.7.1. Production Profiles for Kingfisher and Other Block 3A Prospects .............. 1145.7.2. Production Profiles for Block 1 Prospects ............................... 115Page69