R&R
R&W
R/P
RA (logging)
Rabbit
Racking Back Pipe
RAD
Radial Darcy Law
Radial Stress (tubular)
Radiant Heat Transfer
Radioactive Log
Radioactive Tracer
Radioactive Tracer Log
Radiographic Inspection (pipe inspection)
Radioisotope
Radionuclide
Radium
Radius of Curvature
Radius of Investigation
Rag Pump
Ram
Range of Load (beam lift)
Range 1 Tubular
Range 2 Tubular
Range 3 Tubular
Rank Wildcat
RAPPS (subsea)
Rasp
Rat Hole (well)
Rat Hole (drilling rig)
Rate Dependent Skin
Rate of Penetration
Rate Sensitive (damage)
Ratio of Specific Heats
Raw Natural Gas
R-BOP
RB
RBP
RCA
RCFA
RCM
RCP
RCS
RCSSP
RCT
RD
RDDK (valve)
RDFN
RDMO
RDT
RDX
R<sub>e</sub>
RE
Real Time Gauge
Reamer
Reave
RECIP
Reciprocate
Recirculating Mixer
Reciprocating Pump
Reclamation
Recomplete
Recoverable Gas Lift Gas
Recoverable Oil
Recoverable Reserves
Recovery Efficiency
Recovery Factor
RED
Re-Dress
Reduction (chemical)
Reduction-To-Equator (seismic)
Reduction-To-Pole (seismic)
Reef
Reel
Re-Entry
Re-entry Spool
Reeve (rigging)
Reference Point
Refiner
Refracture
Regional Gravity Field (seismic)
Relative Permeability
Relative Permeability Modifiers
Release Sub
Reliability
Relief Valve
Relief Well
Remedial Cementing
Remotely Operated Vehicle
Repeat Formation Tester
Repeat Section
Repeater
Reporting Limit
Reserve Extension
Reserve Pit
Reserves
Reserves to Production Ratio
Reserves, 1P
Reserves, 2P
Reserves, 3P
Reserves, Behind Pipe
Reserves, Developed
Reserves, Entitlement
Reserves, Extension
Reserves, Non Producing
Reserves, Producing
Reserves, Possible
Reserves, Probable
Reserves, Proved
Reserves, Proved Developed
Reserves, Proved Undeveloped
Reserves, Recoverable
Reserves, Undeveloped
Reserves, Unproved
Reservoir
Reservoir Drive Method
Reservoir Energy
Reservoir Pressure
Reservoir Rock
Residence Time
Residual Bend
Residual Gravity Field (seismic)
Residual Water
Resieved Sand
Resin Consolidation
Resin (asphaltene micelle)
Resin (sand control)
Resistivity
Resistivity Log
Restoring Force
Retained Interest
Retarder
Retention Time
Retrievable Bridge Plug
Retrievable Packer
Retrieving Tool
Retrograde Condensate
Return Permeability
Returns
REV
Rev Dust(tm)
Reverse Circulate
Reverse Osmosis
Reverse Out
Revs (engine)
Reynolds Number
RFI- Request for Information
RFP
RFQ
RFT
RFV
RH (pipe)
Rheology
Rich Gas
Rig
Rig Down
Rig Up
Right Angle Set
Rigid Centralizer
Rigless
RIH
Ring Gaskets
Riprap
Riser
Risk
Risk Analysis
Risk Assessment
Risk Premium
Risk Weighted
River Frac
RKB
Rmf (logging)
ROCE
Rock Density
Rock Mechanics
Rock Properties
Rock Shear Strength
Rock Salt
Rocking
Rockwell Hardness
Rod Box
Rod Pound
Rod Pump
Rod String
ROI
Roll-On Connector (coiled tubing)
Roller Cone Bit
Roller Stem
Rolling the Tanks
Roof Rock
Root Cause (in failures)
ROP
ROPE
Rope Socket
Rotary Bushing
Rotary Drilling
Rotary Hose
Rotary Speed
Rotary Steerable
Rotary Table
Rotating Head
Rotor (PDM motor)
Roughneck
Roughness
Round Trip
Roustabout
ROV
Royalty
Royalty Oil
RPM (string rotation)
RPM
RSMD
RSS (drilling)
Rt (logging)
RTD
RTE (seismic)
RTG (perforating)
RTJ
RTNS
RTP (seismic)
RTS
RTTGP
RTTS
RTU
RU
Rubblize
Rugose
Rugosity
Run In
Run Ticket
Runaway (coiled tubing)
Running Squeeze
Running Tool
Rupture Disk
Rw (logging)
R<sub>w</sub>
RWO
Rxo (logging)
