ABBREVIATIONS FOR DRILLING REPORTS AND LOGSCode Description AND Do not use &AT Do not use @ABDN Abandon (ed)AMT AmountANG Angle (s)APPROX ApproximateASSY AssemblyAV Annular VelocityAVG AverageAZIM AzimuthBBLS BarrelsBHA Bottom Hole AssemblyBHP Bottom Hole PressureBHT Bottom Hole TemperatureBML Below Mud LineBO Back Off or Barrels OilBOP Blow out preventersBP Bridge Plug or Back PressureBPD Barrels per DayBPH Barrels per HourBPM Barrels per MinuteBPV Back Pressure ValveBRKN BrokenBS Bit SubBTC Buttress ConnectionsBTM BottomBU Bottoms UpBW Barrels WaterC/K Choke and KillC/O Clean Out or Change OutCA CalciumCCM Circulating & Conditioning mudCD Contract DepthCIRC CirculateCL CloridesCMT Cement(ing)COMP Complete or CompletionsCSG CasingCT Coil TubingDBL DoubleDC Drill CollarsDD Directional DrillingDEG DegreeDEMOB DemobilizeDEV DeviationDF/RT Drill Floor Rotary TableDFS Days From SpudDHM Down Hole MotorDIA DiameterDIR DirectionalDL Drill LineDLS Dog Leg ServerityDOL Days On Location or DolomiteDP Drill PipeDRLG DrillingDS Drill StringDSA Double Studded AdapterDST Drill Stem TestDW Drill WaterECD Equivalent Circulating DensityELEC ElectricELEV ElevationEMW Equivalent Mud WeightEQ Equation / Equal toESD Emergency Shut DownESP Electric Submersible PumpETA Estimated Time of ArrivalETD Estimated Time of DepartureFIT Formation Integrity TestFM FormationFP Free PointFPH Feet per HourFPM Feet per MinuteFRAC Fracing or FracturedFV Funnel ViscosityFW Free Water or Fresh WaterGAL GallonsGL Ground LevelGPM Gallons Per MinuteGRD GroundHCR Hydraulically Controlled Remote Valve HD HardHGS High Gravity SolidsHO Hole OpenerHORZ HorizontalHP HorsepowerHR Hour (s)HWDP Heavy Weight Drill PipeIBOP Inside BOPID Inside DiameterINC InclinationJTS JointsKO Kick OffKOP Kick Off PointLBS Pound (s)LC Landing CollarLCM Lost Circulation MaterialLD Lay DownLG LargeLGS Low Gravity SolidsLMRP Lower Marine Raiser PackageLNR LinerLOC LocationLOG Electric logsLOT Leak Off TestLS LimestoneLTA Lost Time AccidentLTC Long Tread & CouplingLTR LiterLWD Logging while Drilling toolsLWR Lowerm Meter(s)MD Measured depthMOB MobilizeMSL Mean Sea LevelMT Metric TonMU Make upMW Mud weightMWD Measurement While Drilling toolsNB Near BitNBR Near Bit ReamerND Nippling DownNG No GoodNU Nippling UpOD Outer DiameterOE Open EndedOH Open HoleOK OkayOS Over ShotPA Plug and Abandoned (Permanent) PAX PassengersPBD Plug Back DepthPBTMD Plug Back Total Measured Depth PBTVD Plug Back True Vertical DepthPD Per DayPDC Polycrystalline Diamond Compact Bit PDM Positive Displacement MotorPERM Permeable or PermanentPGB Permanent Guide BasePKR PackerPO Present Operation or Purchase Order POB Personnel On BoardPOH Pulling Out of the HolePOR PorosityPP Pore PressurePPB Pound per BarrelPPG Pounds per GallonPSI Pounds per Square InchPU Pick UpPV Plastic ViscosityRA Radio ActiveRAD RadiusRCJB Reverse Circulation Junk BasketRD Rigging Down something on the rigREP RepairREV ReverseRIH Running in HoleRKB Rotary Kelly BushingROP Rate of PenetrationRPM Revolutions per MinuteRR Roller ReamerRU Rigging Up something on the rigS/C DL Slip & cut drill lineSCSSSV Surface Control Sub-Surface Safety Valve SD Shut Down or SandSDON Shut Down Over NightSEC SecondsSH ShaleSICP Shut in Casing PressureSIDPP Shut in Drill Pipe PressureSITP Shut In Tubing PressureSIWP Shut in Wellhead PressureSLM Steel Line MeasureSPF Shots per FootSPM Strokes per MinuteSQZ SqueezeSS Shock Subs or Sub Sea or Sandstone SSSV Sub-Surface Safety ValveST Side TrackSTAB StabilizerSTBY Stand (ing) BySTC Short Tread & CouplingSTD StandsSTKS StrokesSW Sea WaterSWBG Swab(ing)SWC Side Wall CoresSXS SacksTA Plug and Abandoned (Temporary)TBG TubingTCP Tubing Convey Perforating TEMP TemperatureTGB Temporary Guide Base TMD Total Measured Depth TOC Top of CementTOF Top Of FishTOL Top of LinerTVD True Vertical DepthUPR UpperUR Under Reamer(ing)VERT VerticalVIS ViscosityVOL VolumeW/R Washing & ReamingWD Water DepthWH Well HeadWIRELINE Do not abbreviateWKOV Work OverWL Water Loss or Water Line WP Working PressureWO Wash OutWOB Weight on BitWOC Waiting on CementWOL Waiting on LocationWOO Waiting on OrdersWOW Waiting on WeatherWS Whip StockWeightWT WTR WaterXO Cross OverYP Yield Point。