Spencer CocaSenior Reservoir Geology Adviser

USEFUL ABBREVIATIONS IN THE OILINDUSTRYAAR After Action ReviewABL Alternate Borehole LinerABR Additional Budget RequestACT Accident Control TechniqueACV Approved Contract ValueAELB Atomic Energy Licensing ActAEOS All Employees Opinion SurveyAFE Approval for ExpenditureAHBDF - Along hole below derrick floorAHBRT Along hole below Rotary Table Datum line from which measurements are takenAHBTHF - Along hole below tubing head flangeALARP As Low As Reasonably PracticableAOB Any Other BusinessAPL - Annular Pressure LossARP Asset Reference PlanARPR Annual Review of Petroleum ResourcesASAP As Soon As PossibleASCL Acoustic Super Combo LogASR Appraisal & Strategy ReviewAssy - AssemblyB/O - Break outBAA Business Alignment AreaBALS - Baker Atlas Logging ServicesBBL BarrelBGG - Background gasBHA Bottom Hole AssemblyBHP- Bottom Hole PressureBLC Big Lever ClubBOE Barrel of Oil EquivalentBOP Blow out PreventerBP Business PlanBpf - Blow per footBPH - Bbl per hourBPM - Bbl per minuteBPV Back Pressure Valve

BTI Big Ticket ItemBU Business UnitC/w - Comes withCA Capital AllocationCA Corporate AffairsCAPEX Capital ExpenditureCAPS Corrective Action Preventive SystemCAT Corrective Action TeamCBL - Cement bond logCBP Country Business PlanCE Capital EmployedCIIP Condensate Initially In PlaceCLFL - Choke Line Friction LossesCOB Close of BusinessCORAL Cost Reduction Alliance MalaysiaCRP Commercial Review PanelCSA Customer Service AgreementCSF Critical Success FactorCsg. - CasingCSR Company Site RepresentativeCSS Cyclic Steam StimulationCTC Central Tender CommitteeCTT - Cup type testerDC - Drill collarsDCA - Decline Curves AnalysisDDM Data & Document ManagementDFE - Drill floor elevationDDOR Daily Drilling Operations ReportDIMS Drilling Information Management SystemDOE Department of EnvironmentDOSH Department of Occupational Safety & HealthDP - Drill pipeECC Emergency Control Co-ordinatorECD - Equivalent Circulating DensityEDMS Electronic Document Management SystemEDR Expectation Developed ReservesEI Employee InformationEIA Environmental Impact AssessmentEMG - Equivalent mud gradientEMW - Equivalent Mud Weight

Eob – end of business dayEOS Earliest On SiteEOS Economies Of ScaleEPAC Exploration & Production Audit CommitteeEPBC Exploration & Production Business CouncilEPBM Exploration & Production Business ModelEPCC Engineering, Procurement, Construction & CommissioningEPIS Exploration & Production Issues & StrategyEPU Economic Planning UnitER Emergency ResponseERD Extended Reach DrillingESA Environmental Site AssessmentESP Electrical Submersible PumpETA Estimated Time of ArrivalETD Estimated Time of DepartureETR Effective Tax RateEUR - Expected Ultimate Reserves (rezerve initiale = rezerve existente + cumulativ extras)EWMS Engineering Work Management SystemF/C Float collar Collar at the end of a casing used to land plugF/S - Float shoeFAC First Aid CaseFC Flowcheck To ensure that there is nothing flowing prior to POOHFCP - Final Circulating PressureFDP Field Development PlanFGIIP Free Gas Initially In PlaceFIG - Formation intake gradientFIS Financial Information SystemFMC Fine Medium CoarseFMS Flush Mounted SlipFMT Formation Micro Tester Can only take one sample at a time, whereas RCI can pump many timesFPSO Floating Production Storage & OffloadingG&G Geological & GeophysicalGDC Gas District CoolingGfb - Formation breakdown Press. GradientGHV Gross Heating ValueGIST Global Information Sharing & TeamworkingGM General Manager

Gm - Pressure gradient of mudGMS Gyro Multi Shot. Gyros are used to determine the current location inside the wellGNs Global NetworksGO Global OptimisationGOC Gas Oil ContactGOR Gas Oil RatioGP - Gravel PackGPA General Platform AlarmGPM - galons per minuteGR/CCL Gamma Ray/Casing Collar LoggingGSA Gas Sales AgreementGSP Generalized Screen PropagatorGSS Giro Single ShotGWP Global Warming PotentialsHACCP Hazard Analysis and Critical Control PointHAZOP Hazard and Operability StudyHC HydrocarbonsHEMP Hazards & Effects Management ProcessHEP Horizontal Entry PointHIA Health Impact AssessmentHP - High pressureHPHT High Pressure High TemperatureHR Human ResourceHRA Health Risk AssessmentHRM Human Resource ManagerHRS Human Resources StrategyHSES Health, Safety,Environment & SecurityHSEC Health, Safety & Environment CommitteeHSE-MS Health, Safety & Environment Management SystemHUD Hold up depth Deepest depth you can go, as limited by the equipment availableHUET Helicopter Under Water Escape TechniqueHVAC Heat Ventilation & Air-ConditioningHWDP Heavy Weight Drill Pipe heavier than normal drill pipeIAP Integrated Audit PlanIBA Integrated Business ApplicationsIBV Intrinsic Business ValueICP - Initial Circulating PressureILT Invisible Lost Time

IPP Integrated Planning ProcessIRIS Incident Reporting Information SystemISC In Situ CombustionISG Infrastructure Steering GroupIWCF International Well Control ForumJHA Job Hazard AnalysisJMC Joint Management CommitteeJOA Joint Operating AgreementJSA Job Safety Analysisjts - JointsJV Joint VentureKips - kilo poundsKMW - Kill Mud WeightKOIV Knock Out Isolation valve Made of ceramic and therefore, you can knock it out to activate. Opposite of a BPVKOP - Kick off pointKPI Key Performance IndicatorL/D Lay downL/O - Lay outLCM - Lost circulation materialLE Latest EstimatesLIB Impression tool (Lead Impression Block)LIF Land Identification FormLND Learning & DevelopmentLNG Liquefied Natural GasLo/Hi-vis Low and High Viscous mud used in conjunction with sea water in order to lift cuttings up to surfaceLOA Letter of AuthorisationLOI Letter of IntentLOS Latest on SiteLOT Leak off test. To determine formation strength.LTI Lost Time InjuryLTIF Lost Time Injury FrequencyLWC Lost Workday CaseLWD Logging while drillingM/U Make upMAASP - Maximum Allowable Annular Surface PressureMCM Management Committee MeetingMD - Measured depthMDC Management Development Committee

MEDEVAC Medical Emergency EvacuationMEE Minimum Environmental ExpectationsMFV Management Facilities VisitMIR Management Information ReportMIS Management Information SystemMME Management of Major Emergency'sMMscf Million Standard Cubic FeetMMstb Million Stock Tank BarrelsMOA Manual of AuthoritiesMOD Money of the DayMOM Minutes of MeetingMPP Multiphase PumpMRA Mini Risk AssessmentMRC Modified Reference CaseMTAB Measurement, Testing, Allocation & BalancingMTB Major Tender BoardMTB Managing The BusinessMTC Medical Treatment CaseMW - Mud WeightMWD Measuring while drilling Gives you GR and Resistivity readingsN/D Nipple Down assembleN/U Nipple Up AssembleNBR Near Bit ReamerNFA No further ActivityNGL Natural Gas LiquidNGV Natural Gas VehicleNIAT Net Income After TaxNMDC - Non-magnetic drill collarNOP Notice of OperationsNPV Net Present ValueNSCC (Type of thread like BTC)NSDPP - New Static Drill Pipe PressureNTE New Technology EnvironmentNTP Non Productive TimeNTR Nothing To ReportO/pull - OverpullOBM - oil-based drilling fluid (mud)OCM Operations Committee MeetingOD Outer Diameter

OH Occupational HealthOIM Offshore/Onshore Installation ManagerOIW Oil-in-WaterOMW - Original Mud WeightOPCO Operating CompanyOPEX Operating ExpenditureOR Organisational ReviewOREDA Offshore Reliability DataOSHA Occupational Safety and Health ActOT OvertimeOU Operating UnitOUBP Operating Unit Business PlanP&L Profit and Loss (account)P/T - Pressure testP/U - Pick upP_ann - Annulus pressurePA Public AffairsPAYE Pay- As-You-EarnPCL Pipe conveyed loggingPCL - Pipe conveyed loggingPDC Polycrystalline Diamond CompactPDL Pre drilled liner Liner with holes along its length;

different method of perforatingPDM Positive Displacement MotorPDP Personal Development PlanPEP Project Execution PlanPf - Formation (fluid) PressurePGB Permanent Guide BasePh - Hydrostatic Presure of MudPI Performance IndicatorPIR Post Implementation ReviewPJSM - Pre Job Safety MeetingPMCD - Pressurized mud cap drillingPMG Project Managment GuidelinesPMI Portfolio Management IntegrationPMT Portfolio Management TeamPOA Plan of ActionPOB Personnel on BoardPOIF Potential Occupational Incident FrequencyPOOH Pull out of hole

PPE Personal Protective Equipmentppf - Pounds per footPPPM Personnel Policies & Procedures ManualPPSC Petroleum Production Sharing Contractorspptf - Psi per thousand footPRR Proved Reserves Replacement (ratio)PSC Production Sharing ContractPSDM Pre-stack Depth MigrationPSIF Potential Serious Incident FrequencyPSV Project Screening ValuePTT - Plug type testerPTW Permit To WorkQA Quality AssuranceQC Quality ControlQM Quality ManagementQRA Quantitative Risk AssessmentQS Quantity SurveyorR/D Rig DownR/U - Rig upRAM Risk Assessment MatrixRBE Risk Based EstimationRBI Risk Based InspectionRCI Reservoir Characterisation InstrumentRE Reservoir EngineeringRF Recovery FactorRIH Run in holeRIM Records & Information ManagementRLL Recorded Lithology LogROACE Return on Average Capital EmployedROP - Rate of penetrationRRR Reserves Replacement RatioRSBOP - Rotating Spherical blow out preventorRSM Result Setting MeasurementRT Real TermRWC Restricted Workday CaseSAGD Steam Assisted Gravity DrainageSAP System Applications & ProductsSAS Safety Alert SystemSBM Synthetic Base MudSBOP Surface Blow Out Preventor

SBOP Shore Based OperationsSBT Segmented Bond Test Similar to CBL but it is usually not as effectiveSCE Solid Control EquipmentSCRP - Slow Circulating Rate PressureSCSSV Surface Controlled Subsurface Safety valveSD Sustainable DevelopmentSDI Surface Data IntegrationSES Side Entry Sub Used to allow the wireline to enter the casingSET Solid Expandable TubularSFR Scope For RecoverySGIIP Soluble Gas Initially In PlaceSICP - Shut In Casing PressureSIDPP Shut In Drill Pipe PressureSIMOPS Simultaneous OperationsSIV Site Inspection VisitSM Staff ManagerSMART Specific, Measurable, Achievable, Realistic, TimeboundSMS Safety Management SystemSOV - Side outlet valvesSPA Sales and Purchase AgreementSPM - Strokes per minuteSPP - Stand pipe pressureSRA Structural Reliability AssessmentSRC - Slow Circulating Rate.SS Sub SeaSSDI Sub-Surface Data IntegrationSSIV - Sub-Sea Isolation valveSSP Site Specific ProcedureSTC Short Term ContractSTD Section Total DepthStd - StandSTOIIP Stock Tank Oil Initially In PlaceSW Surface workT&Ts Tasks and TargetsTC Technology CouncilTCC Techno-Commercial CommitteeTCM Technical Committee MeetingTCoO Total Cost of OwnershipTCP Tubing Conveyed Perforations

TD Total DepthTDS - Top drive systemTECOP Technical Economical Commercial Organisational PoliticalTHS - Tubing head spoolTL Team LeaderTL Technical LimitTLV Threshold Limit ValueTOC Top of CementTOC Total Organic ContentTOF Top of FishTOL Top of linerTOSA Technical Operating Services AgreementTPR - Top pipe ramTQ - TorqueTRCF Total Recordable Cases FrequencyTROIF Total Recordable Occupational Illness FrequencyTVDBDF - True vertical depth below derrick floorTVDBRT - True vertical depth below rotary tableTVDSS - True vertical depth subseaUBD Under-balanced drillingUBHO Universal Bottom Hole AssemblyUDC Unit Development CostUFC Unit Finding CostUOC Unit Operating CostUPC Unit Production CostUR Ultimate Recovery (Reserves)USECHH Use and Standard of Exposure of Chemicals Hazardous to HealthUTC Unit Technical CostVOI Value of InformationVRR Voidage Replacement RatioVSP Vertical Seismic ProfileW/L WirelineWDP Well Data PackWOB - Weight on bitWOC Waiting Of CementWOCS - Work Over Completion SystemWOW Waiting on WeatherWP Working PressureWRB Well Review Board

X/O Cross over Used to join two different casings etcYTD Year to Date