R&D - Research and Development
R/U - Rig up
RA - Radio activity
Rabbit - Piston that pushes core out of core tube. pumped out with water.
RAD - radioactive densiometer
RB - Rotary Busing
RCC - Rescue coordination centre
RCCD - Reverse Circulation Centre Discharge
RCDS - Raster Chart Display Systems
RCJB - Reverce circulating junk basket.
RCM – Recirculating Mixer
RD - Rig Down
RDF - Radio direction finder
RDRL - Redrill
RE - Reservoir Engineer
Re - reynolds number - hydraulics
RENC - Regional Electronic Navigational Chart Coordinating Centre
REV - Reverse
RF - radio frequency
RF - range finder
RFMA – Rig Floor Mechanical Arm
RFT - Repeat Formation Tester
RG - Rounded gauge Drill Bit
RH - Relative Humidity
RH - Right Hand
RI - Royalty Interest
Rig – All drilling systems required to drill, complete, or workover production or injection wells
RIH - Run In Hole
RINA - Registro Italiano Navale (Italian Register of Shipping)
RIRs - Risk Identification Reports
RIT - Riser Tensioner
RKB - Rotary Kelly Bushing
RMA - Rock mechanics algorithm
RMLC - Request for Mineral Land Clearanc…
RMS - Ratcheting Mule Shoe
RMT - National Union of Rail, Maritime and Transport Workers
RN - Roughneck
RNC - Raster Navigational Chart
RNR - Romanian Maritime Register of Shipping
ROA - Return of Assets
ROB - remain on board (cargo, bunkers)
ROC - Reactive Organic Compounds
ROE - Return of Equity
ROFR - Right Of First Refusal
ROG - Reactive Organic Gases
ROI - Return On Investment
ROP - rate of penetration
Ro-Ro - roll on/roll off
ROS - residual oil saturation
ROSF - Rincon Onshore Separation Facility
ROV - Remotely Operated Vehicle
ROW - Right of way
RPM - Revolutions Per Minute
RPM - Rounds Per Minute
RR - Rig Released
RS - Rig Service
RS - Russian Maritime Register of Shipping
RST - Rotary Support Table
RT - rotary table
RT (or R/T) - radio telegraph
RTCM - Radio Technical Commission for Maritime Services
RTTS - Retrievable Test-Treat-Squeeze
RTU - Remote Terminal Unit
RWPs - remedial work plans
RWQCB - Regional Water Quality Control Board
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