2008 Ryder Scott Reserves Conference Evaluation Challenges in a - PowerPoint PPT Presentation

2008 Ryder Scott Reserves Conference Evaluation Challenges in a Changing World “Tools for Evaluation” A Review of the SOS Software Scott Wilson-Sr. VP., Ryder Scott Company

Tools for Evaluation : A review of the SOS Software A Suite of Windows based Petroleum Engineering programs originally developed by ARCO from 1980-2000 • Reservoir Surveillance and Prediction. • Production Engineering. • Integrated databases and custom features. • Easiest way to provide technology advances to operations staff. 1

Tools for Evaluation : A review of the SOS Software Core Programs Forecast Multi-Trend Decline Analysis ProCast Gas Field Deliverability Forecasting SNAP Nodal Analysis and Artificial Lift PTA Pressure Transient Analysis Tank Graphical Material Balance EPEC Excel Based P.E. Functions 2

Tools for Evaluation : A review of the SOS Software Low Usage Programs Wellbore Wellbore Schematics BeamPump Rod Pump Analysis BubbleMap Time Variable Bubble mapping Patternflood Waterflood Pattern Balancing 3

Tools for Evaluation : A review of the SOS Software Growth Period 1980-1998 • Designed and developed by ARCO Engineers and Specialist programmers. • An 18 year effort by a 5-10 person team. • Specifically customized to meet demonstrated operating district needs. 4

Tools for Evaluation : A review of the SOS Software Harvesting Period 1998-2000 • Outsourced to Dwights and Geographix. • Suite broken into freestanding tools. • Formally abandoned when BP acquired ARCO. 5

Tools for Evaluation : A review of the SOS Software Maintenance & user funded enhancements Starting in 2000 • RSC acquired the rights to maintain and distribute the programs in 2000. • Specialized Oilfield Software (SOS) registered users growing 2-5 users / day. • Licenses are provided free to clients. • Significant enhancements funded each year by BP, ConocoPhillips, Petroskills, others. 6

Tools for Evaluation : A review of the SOS Software Company Distribution Country Distribution 0 5 10 15 20 25 Registered Users 1 10 100 1000 BP ConocoPhillips USA Devon Energy Corp. Canada Apache Corp. Indonesia Dominion E&P, Inc. India Chesapeake Energy Corp. Argentina Chevron Corp. Malaysia ConocoPhillips Canada United Kingdom Repsol YPF Australia Russia Saudi Aramco Colombia Vico Indonesia Egypt New field Exploration Co. Venezuela Niko Resources Ltd. Pakistan Petro-Canada Trinidad and Tobago Weatherford Ecuador Aera Energy LLC Saudi Arabia Edge Petroleum Corp. Vietnam EnCana Corp. China Oil India Ltd. Romania Samson Mexico St. Mary Land & Exploration Co. Kazakhstan Sw ift Energy Co. Libya TNK-BP Denmark BP Alaska Turkey Khalda Petroleum Co. Spain Nance Petroleum Corp. Japan New field Exploration The Netherlands Pertamina Nigeria Petrom S.A. France Petronas Carigali Sdn Bhd Thailand Algeria Petroproduccion Oman PetroSantander Inc. Myanmar Prize Petroleum Company Ltd. Russian Federation Questar Exploration & Production Brazil Rally Energy Corp. United Arab Emirates Venoco, Inc. Bulgaria W&T Offshore, Inc. Bolivia Whiting Petroleum Corp. 950 Registered users as of early 2008 7

Tools for Evaluation : A review of the SOS Software Approximately 2500 total users coordinators, training licenses not tracked through registration Large User Coordinators : Single Point of Contact (SPOC) ConocoPhillips : Tom Nations, Grant Dornan, David Lagerlef BP : Erin Authier- O’Brien, Scott LaVoie (SLB) Exxon Mobil : Juan Ulibari Cimarex : Eddie Fetkovitch Questar Market Resources : Chuck Stanley (?) Weatherford : Toby Pugh 5-6 University Licenses Managed By Professors Hundreds of Petroskills Nodal School Students 8

Forecast Multi-Trend Decline Analysis The first system to model multi-trend Declines •Six different Forecasting Options •Arps in 4 mouse clicks •P/Z & Decline synchronization •WOR-Cum •GOR-Cum •Drilling Schedule / Type-well planning •Import Dwights Data, cut and paste, or ODBC link directly to Client Databases •Used to monitor 500,000 bopd at Prudhoe and Kuparuk 9

P C RO AST Integrated Gas Field Planning An integrated Nodal/Network forecasting system •Reservoir/well/facility rate forecasting •“Spreadsheet” and Network interfaces •nine well performance models •eight pipeline/tubing hydraulics models •CBM Langmuir / Hydrate models •User defined design/analysis objects Pipelines Line Loops Compressors LNG Plants NGL Processing Pre-defined rates Well performance Flow Splitters Platforms Manifolds CO2 removal 10

S NAP Well Performance and Artificial Lift Analysis A state of the art Nodal system •The standard gas lift design tool used by ConocoPhillips, BP, and soon Exxon •Consistently judged easier to learn and use than all other Nodal packages •Complex wellbores with up-casing/tubing and down-annular for multi-zones •Full featured multi-segment horizontal, multistage fractured wells, and PVT •Multi-zone completions with crossflow. •Deviated, stimulated, and partially penetrated •All meaningful Tubing Hydraulics correlations •Perforated & GP Completion effects •Relative permeability effects •User defined PVT and IPR N u S n a p D e fa u lt D a ta S e t. sn p - S imu la to r T a b le O u tp u t: F T P - 5 0 0 . 0 0 0 W C U T - 0 . 0 0 0 •Fully editable presentation quality graphics •Restriction and choke pressure drops 6549 Y acheng 13-1 A1 static match Yca11999match.snp Rate vs. Pressure 6006 Reservoir Data Density = 12.000 09-Feb-99 08:18:36 5463 Pressure = 5557 Perf Diam = 0.50 Depth (MD) = 12130 WHPres = 3379 4921 kh = 18676.0 Penetration = 8.00 Tubing I.D. = 6.184 (s1) 4378 •Links with fieldwide optimization models (Procast) Skin = -1.00 3836 3293 2750 2208 6000 1665 Bottom Hole Pressure (psig) 1122 •Critical lifting rates, mixture velocities, erosional 580 velocities, and PVT properties reported every 200 feet. 4000 •Simulator Hydraulics table builder for Eclipse, 2000 VIP, PSIM, ACRES 0 •Custom database connections for loading test data, 0 40000 80000 120000 160000 200000 240000 11 Total Gas Rate (mscf/d) archiving datasets, and AI Batch troubleshooting.

EPEC Excel Petroleum Engineering Calculator Widely used Petroleum Engineering Utilities In Single-Cell functions Features Gas Well Heat Transfer Spreadsheet 0 100 200 300 400 INPUT: 0 variable: value: units: Comp mole % � PVT properties (HP41 Fluids Pak) 14500 C1 90 True V Depth 'TVD -2000 Flow ID 2.75 inches C2 10 0.00065 C3 0 Roughness inches -4000 0.7 C4 0 SG gas (air = 1.00) %H2S 0.00 % C5 0 - Z factor (CO2, H2S, N2) 3.50 C6 0 %CO2 % -6000 0.00 C7 0 %N2 % 5000 C8 0 Qg (+ for prod) mcfpd -8000 - Viscosity 1200 P wh psi 70 � Utility Functions Ambient Surface T Deg F -10000 350 SI BHT Deg F 0.992 54.25 F Heat Flux btu/(hr-degf-ft) Est WHT = 0.52 heat cap btu/(lb-degf) -12000 gas jt effect 0 deg/psi From Component Analysis - Table interpolation. -14000 Tc 380.7718 Deg R Pc 674.8221 Psia total error 0 btu/hr -16000 SG Gas 0.60233 (air = 1.00) Solve Tol. 500 btu/hr - Pressure Drops (static, 2, 3 phase). 0.51474 btu/(lb-degf) Solve Loops 1 loops heat cap Depth Fraction depth Amb temp WB temp WB prs density length delt temp ave temp dif heat loss/hr heat gain/hr diff - Text Parsing. 0 0 80 54 1200.00 5.531 145.0 -26 -18 -2574 -2574 0 � Incorporate complex math into Excel. 0.02 290 60 50 1213.87 5.902 217.5 -10 0 -11 -11 0 0.05 725 40 50 1235.11 6.386 362.5 10 20 7260 7260 0 0.1 1450 30 60 1270.63 6.743 362.5 30 34 12132 12132 0 0.15 2175 40 77 1305.53 6.531 362.5 37 36 13038 13038 0 0.2 2900 60 95 1339.51 6.141 725.0 35 34 24214 24214 0 � Functions are used in your spreadsheets. 0.3 4350 100 132 1405.09 5.601 1450.0 32 30 43701 43701 0 0.5 7250 175 204 1529.61 4.991 1450.0 29 26 37497 37497 0 0.7 10150 250 273 1648.46 4.632 1087.5 23 23 25277 25277 0 0.85 12325 300 324 1735.15 4.457 1087.5 24 12 12739 12739 0 1 14500 350 350 1821.18 4.444 0 0 0 Gas Formation Volume Factor Compressibility Formation Volume Factor Viscosity & Standing z Value & Solution GOR 10 1.3 0.6 1 E-2 8 1.0 Bo Mu Oil C gas (RB/STB) 1.2 1 E-3 6 Rs 1 0.4 Bo (Mscf/STB z (vol/vol) Viscosity or c Bg 1 E-4 1.1 ) Rs 4 0.9 z C oil (cp) Bw (psi -1 ) Mu Water (apparent) C oil (us) 0.2 0.1 1 E-5 1.0 2 Bw Mu Gas Bg (RB/STB) (RB/Mscf) C water 1 E-6 0.9 0.0 0 0.8 0.01 0 1 2 3 4 5 0 2 4 6 0 2 4 6 0 2 4 6 12 Pressure (1000's of psia) Pressure (1000's of psia) Pressure (1000's of psia) Pressure (1000's of psia)