1. MATURE FIELDS LTRO CAPABILITY POWERED BY POSEIDON A LEAP ENERGY TECHNOLOGY PLATFORM

2. Why Locate The Remaining Oil (LTRO) workflow? A low-cost effective solution for accelerated identification of opportunities DATA INTEGRITY ASSESSMENT ZONAL ALLOCATION REMAINING OIL MAPS OPPORTUNITY IDENTIFICATION PRODUCTION FORECASTING Problem statement: How to reliably, time and cost-effectively perform a complex LTRO study with complex mature fields ? Large number of wells (100+ not an issue), 30+ years of production, multiple zones, displacement mechanism (gas, water), data reliability issues Generate remaining oil maps, opportunity database of BCO (behind casing opportunities), Infill and re-perforation, complete with an assessment of geology, production allocation issue. 6-10 weeks turn-around time Cost and time effective solution

3. FULL STATIC-DYNAMIC HM CYCLE TRADITIONAL ANALYTICAL METHODS COMPLIANT MAPPING METHODS 3 STOIIP - bubble map Material Balance REMAINING OIL POTENTIAL ASSESSMENT ROCM Remaining Oil Compliant Mapping Fully Diffuse or Mixed- segregated 3 phase saturation mapping methods ROCM Remaining Oil Compliant Mapping Fully Diffuse or Mixed- segregated 3 phase saturation mapping methods Applicable for a fields with edge aquifer and/or gas cap are the main driving mechanisms, defined thinner flow units, penetrations/perforation across full reservoir section Suitable for fields with thick reservoir units, bottom drive water and/or gas cap expansion Limited penetration/perforation configuration Compliant Remaining Oil Mapping A significant step up from traditional analytical methods Locating and quantifying remaining oil pools without full physics simulation REALISATIONS

4. A significant acceleration to identify by-passed oil A case study with a giant, complex oil and gas field in Malaysia. Top 3 largest oil and gas field in Malaysia, oil rim with large gas caps and aquifer of varying strength. 30+ years of production, depletion mechanism combination of gas cap expansion, gas-re-injection and aquifer influx. High heterogeneity (1-1000’s mD range) ~300 production and injection wells, 150 historically active strings at L15-16 level Initial Mobile Oil Thickness Map Legacy model from incoming operator upon transition: 500k active cells, study dated 2012-2013 (2 years) Permeability distribution (mD) B.M. Baruah & K. S. Cheng: ”Water Injection in Brown Field: Never Too Late”, Offshore Technology Conference, Kuala Lumpur- Malaysia, March 2014.

5. POSEIDON vs. Commercial Simulator Validation of STOIP distribution evolution using simulator matched results as a complex synthetic dataset (~150 active oil producers & gas injectors) SIMULATOR Time Step:1231 STOIP (scm) POSEIDON TM LowHigh INITIAL RESOURCE DISTRIBUTION Actual field outline modified and metrics removed to protect confidential information

6. POSEIDON vs. Commercial Simulator Validation of STOIP distribution evolution using simulator matched results as a complex synthetic dataset (~150 active oil producers & gas injectors) SIMULATOR Time Step:1234 STOIP (scm) POSEIDON TM LowHigh Time to generate matching remaining oil maps with 100+ wells? <1 week3-6+ months

7. POSEIDON vs. Commercial Simulator Comparison of expected target volumes allows to quantify the accuracy of the RCOM mapping to 80+% accuracy in a complex simulation scenario Experience. Expertise. Technology7 Last Time Step Area 1 Area 2 Area 3 Area 4 Area 5 SIMULATOR POSEIDON TM Area 1 Area 2 Area 3 Area 4 Area 5

8. POSEIDON vs. Commercial Simulator Comparison of expected target volumes allows to quantify the accuracy of the RCOM mapping to 80+% accuracy in a complex simulation scenario Experience. Expertise. Technology8 Last Time Step Area 1 Area 2 Area 3 Area 4 Area 5 SIMULATOR POSEIDON TM Area 1 Area 2 Area 3 Area 4 Area 5 >80% accuracy achieved in less than 10% of the time

9. Commercial Simulator How accurate are the simulation results with complex mature fields ? Experience. Expertise. Technology9 Field Level Well Level HM Quality

10. POSEIDON REMAINING OIL COMPLIANT MAPPING Excellent match quality achieved to the synthetic production and volumes in place – RCOM allows to achieve a combined match of local saturations and overall volume distribution Experience. Expertise. Technology 10 Water SaturationGas Saturation STOIP, GIP & Ave Sw GIP Cross Plot STOIP Cross Plot Achieving convincing matches across range of local and global objective functions

11. POSEIDON – Remaining Oil Compliant Mapping How does it work? Experience. Expertise. Technology11 Saturation at wells is inverted from production data based on each well’s fractional flow. Incorporation of geological understanding (porosity, perm trends, channels, etc) in determining preferred flow paths Simultaneously, running flow paths-based saturation mapping engine while optimising matches of fractional flows and volumes FRACTIONAL FLOW INVERSION STREAM VELOCITY CALCULATION GEOLOGY PRODUCTION DATA SATURATION MAPPING FRACTIONAL FLOW MATCHING MATERIAL BALANCE REMAINING OIL MAPS Next Time Step Stream velocity map is generated based on sinks-sources interactions ( injectors, producers, aquifer influx )

12. POSEIDON ROCM Illustration of saturation mapping iteration search Sw Map Time-step N X(Cell) Sw Injector IWell W Water saturation (Sw) Cross section, Time-step N I W X(Cell) Sw Sw profile Time-step N+1 Iteration 1 Iteration 2 Sw area map Time-step N+1 Iteration 3 Iteration n Saturation known at injector Saturation known at producer MATCH !

13. LEAP ENERGY OFFICES COMPANY POSEIDON EXPERIENCE STAFF WORLDWIDE EXPERIENCE AUSTRALIA  Due Diligence Applications  Accelerated LTRO MALAYSIA,  West Lutong LTRO OMAN  Jahwah BCO study THAILAND  JASMINE FIELD 20+ wells ROMANIA  Vata 750wells LTRO & POSEIDON GLOBAL EXPERIENCE MALAYSIA  Seligi LTRO and WI studies ROMANIA  Balaria 500+wells

14. COMPLIANT REMAINING OIL MAPPING Other applications 14 Pre-history matching validation 2D material balance validation (STOIIP, fluid movement) Geological trend testing Allocation issues resolution Well to well Inter-platform and fields Predictive analytics Improved non-simulation EUR prediction of wells Behind-Casing Opportunity (BCO) assessment Waterflood Sweep improvement Identify main sweep trends via production behavior Develop improvement plan

15. POSEIDON™ is an innovative solution developed for complex, high well count mature oil and gas fields. POSEIDON™ Modules: POSEIDON™ DATASCAN POSEIDON™ ALLOCATION POSEIDON™ ANALYTICS POSEIDON™ REMAINING OIL POSEIDON™ PREDICTION

16. Rapidly understand where and what the opportunities are over a large field. Deploying a systematic screening process. Quantify the degree of interaction between wells to optimise alternative waterflood patterns Innovative multi-phase, pressure compliant allocation tool. Integrates static and dynamic property model and workover/intervention history. Fractional Flow and material balance compliant saturation or contact mapping Ensure activities are prioritised consistently and according to historical performance. Applying adequate risking. AREAS WITH POOR DATA QUALITY Generate automated analysis of data quality using pre-defined validators