===== Terms beginning with R =====

[[Rack pipe]]

[[Radial flow]]

[[Radiation]]

[[Radioactive tracer]]

[[Radioactive tracer log|Radioactive-tracer log]]

[[Radioactivity]]

[[Radioactivity log]]

[[Radioisotope]]

[[Radiometric grade]]

[[Rams]]

[[Rankine temperature scale]]

[[Rate of penetration]]

[[Rathole]]

[[Ratio]]

[[Rayleigh wave]]

[[RDB]]

[[Reaction value]]

[[Reading]]

[[Ream]]

[[Reamer]]

[[Receiver]]

[[Reciprocal sonde]]

[[Reciprocator]]

[[Record]]

[[Recorder]]

[[Recovery]]

[[Recovery factor]]

[[Rectify]]

[[Redox logging]]

[[Redox potential]]

[[Red pattern]]

[[Reef]]

[[Reference point]]

[[Reflection peak]]

[[Reinjection]]

[[Relative bearing]]

[[Relative permeability]]

[[Relief well]]

[[Reluctance]]

[[Repeat formation tester]]

[[Repeat section]]

[[Reserves]]

[[Reservoir]]

[[Reservoir drive mechanism|Reservoir-drive mechanism]]

[[Reservoir pressure]]

[[Reservoir temperature]]

[[Residual]]

[[Residual oil]]

[[Resistance]]

[[Resistivity]]

[[Resistivity index]]

[[Resistivity log|Resistivity logs]]

[[Returns]]

[[Reversal]]

[[Rig]]

[[Rig down]]

[[Rig floor]]

[[Rig up]]

[[Riser]]

[[Riser pipe]]

[[Roentgen]]

[[Roller cone bit|Roller-cone bit]]

[[ROP]]

[[Rope socket]]

[[Rose diagram]]

[[Rotary bushing]]

[[Rotary drill bushing]]

[[Rotary drilling]]

[[Rotary rig]]

[[Rotary table]]

[[Roughneck]]

[[Roundtrip]]

[[Rugosity]]

[[Run pipe]]