Exploiting the ROZ in Lithuania Thomas M. Haselton Minijos Nafta

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1 Exploiting the ROZ in Lithuania Thomas M. Haselton Minijos Nafta Presented at the 19 th Annual CO 2 Flooding Conference December 14, 2013 Midland, Texas

2 REPUBLIC OF LITHUANIA EU MEMBER STATE

3 OVERVIEW Quick Review of ROZ Concept The ROZ in Minijos Nafta license area Lithuania How could it be exploited

4 Minijos Nafta 8 small existing oil fields Produced 15 million barrels of oil

5 THE ROZ BACKGROUND (Residual Oil Zone) Next 3 slides from Steve Melzer

6 Original Accumulation with a Breached then Repaired Seal & Forming a ROZ ORIGINAL POST BREACH TYPE 2 ROZ

7 CONVENTIONAL PAY RESIDUAL OIL ZONE ( ROZ ) PAY CHARACTERISTICS: Oil shows while drilling Oil saturation < 50% Tests water + some oil BREACHED FIELD NATURAL WATERFLOOD 10-30% of OIIP CAN BE PRODUCED WITH CO2

8 Annualized Oil Production in bopd THE CONCEPT OF RESIDUAL OIL PRODUCTION WITH CO2 (Midland Basin, Texas example) Total, Primary, Waterflood, Main Pay and ROZ CO2 Performance (the Concept of "Brownfield" Quaternary Oil) 80,000 70,000 Secondary Production Peak TOTAL OIL - bopd Proj Primary-bopd Proj Waterflood-bopd Main Pay EOR Baseline Quat 2.0 Oil - bopd 60,000 50,000 40,000 Primary Production Peak Tertiary CO2 Production Peak Quaternary CO2 ROZ Production Peak 30,000 20,000 10,000 0 Primary Cum = 125 mm bbls Secondary Cum = 325 mm bbls Year Tertiary Cum = 200 mm bbls Projected Quaternary Cum = 200 mm bbls

9 ROZ LITHUANIA

10 MINIJOS NAFTA PRODUCING FIELDS -1,975 OWC

11 MN oil trap 20m MN ROZ 70m

12 Vilkyciai-15 OWC ODT

13 Deglai-7 571m Deglai m Deglai-4 772m Deglai-3 1.5BWPD 7.3 BWPD OWC BWPD ODT OWC selected at 1970m on basis well flow tests but oil is seen down to -2040m with oil saturations of 40-60%.

14 THICK RESIDUAL OIL ZONE EXISTS IN LITHUANIA CROSS-SECTION BELOW; ALL RESERVOIRS BELOW OWC S N OIL-WATER-CONTACT 1, m RESIDUAL OIL ZONE (ROZ) BASE of OIL SATURATION ( BOSO ) 2,040

15 Sources of CO2 Lithuania up to 4-5 million tons/year within 200 km Import via LNG terminal Ideal Solution would be a local power plant or fertilizer plant from which to extract CO2

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17 City Company name Business description Annual Heat output, MWh Main fuel Annual CO2 emission in tons Average daily CO2 emissio n in tons Distanc e from CO2 injectio n point, km Mazeiki ai AB "ORLEN Lietuva" Oil refinery Natural gas and heavy oil 1,565, AB "ORLEN Lietuva" power plant Produces and sells heating energy and electricity 1,030,131 Heavy oil 350, N. Akmen e AB "Akmenės cementas" Cement production 2,882,172 Natural gas, heavy oil, coal recycled rubber 979, Elektre nai AB "Lietuvos elektrinė" Produces and sells heating energy and electricity 1,939,424 Natural gas and heavy oil 659, Kaunas UAB "Kauno termofikacin e elektrinė" Produces and sells heating energy and electricity 1,642,198 Natural gas and heavy oil 558, Jonava AB "Achema" Manufacture of fertilisers and nitrogen compounds Natural gas 2,090,

18 Orlen Refinery Achema Akmenes Power plants

19 Daily Oil, m3 Operations to Date Phase : Oil Case Name : Case1 b : 0 Di : A.n. qi : m3 ti : 05/18/2013 te : 11/30/2016 End Rate : 1 m3 Final Rate : m3 Cum. Prod. : Cum. Date : 05/18/2013 Reserv es : EUR : Forecast Ended By : Rate Forecast Date : Injected 1,000 tons CO2 into Degliai-1 producing zone Produced oil back Currently injection into Pociai-3 ROZ 0.1 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

20 Degliai-1 Injected above OWC temperature logs Local cheap version of a single well tracer test

21 Degliai-1 CO2 Injection Results To date produced approximately 400 m3 of incremental oil (2,500 barrels) Producing approximately 1 ton (7 barrels) of oil per ton of CO2 produced

22 Pociai-3 Test produced well for 6 months 2-3 bpd Flushed zone with water Currently injecting 500 tons in ROZ Shut in for 1 month and produce back

23 Current Operations

24 Logistics Gas pipeline through license area LNG terminal to be completed in 2014 In theory both could also be used for CO2