Katz (Strawn) Field CO2 Project - CO2 Conference

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Katz (Strawn) Field CO2 Project Troy Kelly David Smith Presented at the 15th Annual CO2 Flooding Conference December 10-11, 2009 Midland, Texas 1

Outline Field Overview Reservoir Data CO2 Project – Design and Implementation Facilities – Compression / Pipeline 2

Katz (Strawn) Field King, Knox, Stonewall, Haskell Counties, Texas 80 miles north of Abilene, TX 3

Katz TERRY LYNN GARZA DAWSON KENT BORDEN SCURRY KNOX STONEWALL FISHER HASKELL JONES C la ytonville S AC R O C MITCHELL MARTIN NOLAN TAYLOR HOWARD M idland B asin 0 20 m i 0 3 0 km COKE P e n n s y lva n ia n re e f re s e rv o irs M o d ifie d fro m G a llo w a y, e t a l. (1 9 8 3 ) QAd4569x 4

Salt Fork of Brazos River 5

Katz Type Log 25 Square Miles of 3D data Specialty Processing Relative Acoustic Impedance 1St Strawn (4,800’ Sand) Average Porosity – 16% Average Permeability – 53 md 2nd Strawn (4,900’ Sand) Average Porosity – 17% Average Permeability – 124 md Dirty 3rd Strawn (5,100’ Sand) Average Porosity – 16% Average Permeability – 3.2 md Clean 3rd Strawn (5,100’ Sand) Average Porosity – 16% Average Permeability – 55 md 6

Katz Field History Jan. 1951 Katz Field discovered by Katz Oil Co, H.D. Dozier No. 1 (current well name, ERU No.59). Mar. 1951 Katz (5100) Field discovered by T.D. Humphrey, Mattie Davis No. 1 (located on the Orsborn Unit). Jul. 1983 Katz (Day) Field discovered by Getty Oil Co, Roy Day No. 4 (current well name, SWRU No.35). Oct. 1984 Orsborn Unit waterflood began into the Katz and Katz (5100) Fields (Conoco, operator). Oct. 1987 ERU unitized in the Katz and Katz (5100) Fields (Standard Oil Production Co, operator). Nov. 1989 SWRU unitized in the Katz, Katz (Day), Katz (5100) Fields (BP Exploration, operator). Nov. 1989 CBLU unitized in the Katz and Katz (5100) Fields (Phillips Pet. Co, operator). May 2006 Kinder Morgan Production Co. became operator of ERU, CBLU, and SWRU. Nov 2009 Consolidated 3 fields into the Katz (Strawn) Field. 7

CBLU ERU SWRU 8

Katz Total Production (Katz Katz (Day) Katz (5100)) Fields 100,000 Combined ERU, CBLU, SWRU Gas 10,000 Oil BPD or MCFPD Water 1,000 100 Cum oil 59.98 MM STB P S 32.5% OOIP 10 1/1/1951 1/1/1961 1/1/1971 Nov 1989 CBLU and SWRU WF 1/1/1981 1/1/1991 Oct 1987 ERU WF 1/1/2001 1/1/2011 9

SP PHIE Sid Katz H. T. Lorentzen “C” Well No. 11, Stonewall County, TX Katz Field Katz (Day) Field The Katz (Day) Field is not located in this well, but would be found at this relative depth in portion of reservoir where it exists. Katz (5100) Field Historically Katz was comprised of 3 fields. 10

SP PHIE Sid Katz H. T. Lorentzen “C” Well No. 11, Stonewall County, TX Katz Field 1st Sand 2nd Sand Katz (Day) Field 3rd Sand Katz (5100) Field Orientation of the 3 sands to the 3 fields Lower 3rd Sand 11

SP PHIE Sid Katz 4963 ft H. T. Lorentzen “C” Well No. 11, Stonewall County, TX Katz (Strawn) Field Consolidation into 1 field was approved by TRRC November 4, 2009 5691 ft 12

Reservoir Data Lithology Producing Interval Reservoir Dip Net Pay Porosity Perm Initial Water Saturation 1st and 2nd Sand WOC 3rd Sand WOC Water Salinity Reservoir Temperature Reservoir Pressure Strawn Sandstone 4800’ – 5400’ 3 degrees (to SW) 45’ * 3 sands 135’ 12 – 22% 2 – 3700 mD 28% TZ begins -3503’ thru -3438’ -3660’ 120,000 ppm Cl, TDS 185,000 ppm 116 deg F (orig. 119 deg F) 1600 psig (orig. 2200 psig) 13

Katz Field Structure Map First Sand Formation Top CI 10 feet 14

1st Sand - HCFT 15

2nd Sand - HCFT 16

3rd Sand - HCFT 17

Key Reservoir Engineering Data Core φ-k Transform Avg Average 1st 53 md 47.7 md 2nd 124 md Dirty 3rd Clean 3rd DykstraParsons Relative Perm End Points Swi Sorw 0.82 0.248 0.753 Water-Wet 263.2 md 0.67 0.278 0.641 Strongly WW 3 md 3 md 0.70 0.39 0.639 Strongly WW 55 md 50 md 0.64 0.347 0.694 Moderately WW Relative Permeability Curves Relative Permeability Curves 1 1 0.9 0.9 1st 0.8 0.7 Sand 2nd Sand 0.8 0.7 0.6 0.6 0.5 k rw k rw Wettability 0.4 0.5 0.4 0.3 0.3 0.2 0.2 0.1 0.1 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Water Saturation (% PV) 0.9 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Water Saturation (% PV) kro Data Lake kro Match B-C kro Match kro Data Lake kro Match B-C kro Match krw Data Lake krw Match B-C krw Match krw Data Lake krw Match B-C krw Match 18

Capillary Pressure Air-Brine Capillary Pressure 80.00 TZ Height 67 ft PWL 72ft 200 y -83.333x 2957.5 180 70.00 160 Used to characterize 2nd Sand TZ 60.00 Pc A/Br (psia) 120 40.00 100 80 30.00 60 Height above 100% FWL (ft) 50.00 140 20.00 40 y -0.1451x 16.601 10.00 0.00 0.00 20 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 0 100.00 Water Saturation (%) 19

PVT Data Discovery Pressure – 2200 psia API Gravity – 38.6o Oil Viscosity – 2.151 cP Current GOR - 100 scf/bbl – Original Solution GOR – 250 scf/bbl Current Bubblepoint – 138 psia – Original Bubblepoint – 1130 psia Oil Formation Volume Factor – 1.183 rvb/stb 20

PVT Data (cont) Oil Fingerprint Analysis – All three sands have same source Biomarkers indicate Late Paleozoic – Barnett Shale – Marine Depositional Environment Marine algal-bacterial organic matter Low terrigenous organic material 21

Original vs. Current Oil Recombination Katz Recombined Oil Comparison 80 MW 218 Indication that light ends have been produced 70 60 MW 222 Mole % 50 40 30 20 10 0 C1 C2 C3 iC4 nC4 iC5 nC5 C6 C7 Hydrocarbon Component Original Recombined Oil Composition Current Recombined Oil Composition 22

Recombined Hydrocarbon Components Katz Recombined Hydrocarbon Components 10.00 9.00 8.00 7.00 Indicates potential paraffin and asphaltene problems 5.00 4.00 3.00 2.00 C33 C34 C35 C36 C26 C27 C28 C29 C30 C31 C32 C18 C19 C20 C21 C22 C23 C24 C25 C10 C11 C12 C13 C14 C15 C16 C17 0.00 nC4 iC5 nC5 C6 C7 C8 C9 1.00 C1 C2 C3 iC4 Mole % 6.00 Hydrocarbon Component 23

CO2 Project Hurdles No allocated production/injection data Limited and missing well test data Old neglected wellbores No physical core samples No CO2 Pipeline – Long PL for smaller target Multiple Zones Brazos River Outdated / limited log data 24

CO2 PVT MMP – 1746 psia @ 100% CO2 – 1751 psia @ 90% CO2 – 10% Produced Gas – 2104 psia @ 75% CO2 – 25% Produced Gas CO2 FVF – 1.83 mcf/rvb CO2-Water Solubility – 83 scf/bbl 25

Katz Slim-tube Tests Katz Slim-tube Tests MMP 1,746 psi at 120 o F , 100% CO2 MMP 1,751 psi at 120 o F , 10% Gas and 90% CO2 MMP 2,104 psi at 120 o F , 25% Gas and 75% CO2 100 95 Oil Recovery (% OOIP) 90 85 Effect of gas contamination on MMP 80 75 70 65 60 1,200 1,400 1,600 1,800 2,000 2,200 2,400 2,600 Back Pressure (psig) 26

Analytical Model Generates Ideal WAG Ratio and Slug Sizes, Total Recovery, Production Forecast – Good for limited datasets – Quick Requires Water-Oil Rel Perm Curves and Basic PVT Properties 27

Analytical Model Fractional Flow Curves (a,b) 1.1 Initial Saturation 1 Cont. H2O 10: 1 0.9 0.8 5: 1 W a t e r F r a c t io n a l Flo w Vcw 3: 1 0.7 W A G R a t io 2: 1 0.6 0.5 1: 1 OB' 0.4 1: 1.5 1: 2 0.3 Max Oil Bank WAG 0.2 OB 0.1 0 0.00 1: 3 J 0.10 0.20 0.30 0.40 1: 10 0.50 0.60 Water Saturation (%) 0.70 0.80 0.90 Cont. CO2 1.00 28

Dim Rec Curves w/ Katz Overlay for SS Reservoirs 20% Field A Field B Field C, Phases 1&2 Field C, Phase 3 Field D Katz 18% 16% Oil Recovery (% OOIP) 14% Katz 12% 10% 8% 6% 4% 2% 0% 0.0 0.5 1.0 1.5 Total HCPVi 2.0 2.5 3.0 29

Project Forecast 70% 18% 150.8 MMSTBO CO2 Target 60% 14% 50% 12% 10% 40% 8% 30% 6% 20% 4% CO2 Recovery (% HCPV) Oil Recovery (% OOIP) 16% 10% 2% 0% 0% 0 0.5 1 1.5 2 2.5 3 Total HCPVi Oil Dim Recovery Economic Recovery – 15.8% Purchase CO2 Vol. – 220 BCF Net – 9 Mcf/bbl Gross – 19 Mcf/bbl Total Recovery – 23.8 MMSTBO CO2 Dim Recovery Dimensionless Curve Construction Combination of Reservoir Simulation, Analogies, Analytical Models, and Engineering Experience 30

140,000 7,000 120,000 6,000 100,000 5,000 80,000 4,000 60,000 3,000 40,000 2,000 20,000 1,000 BOPD MCFPD, BWPD Katz CO2 Project Forecast 0 1/1/10 0 1/1/12 CO2 Production 1/1/14 1/1/16 Water Production 1/1/18 1/1/20 CO2 Injection 1/1/22 1/1/24 Water Injection 1/1/26 1/1/28 1/1/30 CO2 Purchase 1/1/32 1/1/34 Water Disposal Oil 31

Combined 3 Sands - HCFT 32

3 Sands – HCFT (w/ patterns) 33

CO2 Project Design 57 WAG Injectors 74 Producers 84 New Drills 47 Workovers 76 P&A’s 4 Water Curtains 5 Observation Wells 3 Disposal Wells 34

CO2 Project Design Injection Rates – 18% HCPV/yr Injection Pressure – Fracture Gradient of 0.72 psi/ft – CO2 Surface – 1650 psig BH - 3375 psia – Water Surface 1400 psig BH – 3380 psig 35

Katz Injection Wells Down hole isolation assembly used on CO2 WAG injectors: – Control CO2 injection side when high GOR seen at producer. – One method of zonal conformance: *cheaper than some polymer jobs or expandable liner systems. – Can function individual zone sleeves from surface via slick line, no rig necessary. – Can limit individual zone rate based on orifice size. 36

Downhole Isolation Assembly 37

Segregation valve Assembly 38

Producing Wells – ESP’s 1100 – 1500 psig intake pressure – – – – 3000’ FL CO2 in dense phase No Gas Separator Mixed Flow Stages All equipped w/ VSD’s and BH Sensors Continuous and Batch Corrosion Treatments – Mitigate predicted low pH reservoir fluids pH 3.5 – High Cl 400 psig Wellhead Pressure – Can produce at high GOR’s without freezing – Reduces need for inlet compression 39

Compression Overview Two Stage Compression – Gas Fired – Stage 1 Suction – 300 psia Discharge – 700 to 800 psia – 10o Approach Chiller » Drop out any liquids – Stage 2 Suction – 700 psia Discharge – 2200 psia – 10o Approach Chiller – Cooling Tower – 1800 psia supply to the field at 95oF No Hydrocarbon Recovery 40

Katz SWIF and Production Satellites Green New or Addition Orange Relocated or Change ERU Satellite CBLU Satellite WIF SWRU Satellite 41 Exhibit 11

Eastern Shelf Pipeline Katz 10” 91-mile Carbon Steel PL 1700 psig delivery pressure Capacity 65 MMCF / Day Snyder 43

Thank You Questions? 44

Nov. 1989 SWRU unitized in the Katz, Katz (Day), Katz (5100) Fields (BP Exploration, operator). Nov. 1989 CBLU unitized in the Katz and Katz (5100) Fields (Phillips Pet. Co, operator). May 2006 Kinder Morgan Production Co. became operator of ERU, CBLU, and SWRU. Nov 2009 Consolidated 3 fields into the Katz (Strawn) Field. 7

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