Page 742 - Air and Gas Drilling Manual

Positive displacement compressors,
Mud rings, 8-67, 8-68
4-1, 4-7
Multistage shaft power requirements,
Positive displacement motors (PDM),
4-20
12-3
Power swivels, 11-5 I-5 Index
Power swivel Model S-1, 11-6, 11-7
Natural fracture, 9-2 Pressure change through the drill bit,
Natural gas, 4-23, 4-34, 6-1, 6-5, 7-1 6-11, 6-24, 7-11, 7-22
Natural gas from a pipeline, 7-5 Pressure gauge, 2-5
Newtonian, 9-11 Pressure of the gas, 8-9
Nitrogen, 6-1, 7-1 Pressure profile, 10-74
Non-magnetic drill collars, 3-22 Primary jets, 2-18
Non-magnetic nickel alloys, 3-19 Primary compressor system unit,
Non-Newtonian, 9-11 4-22, 8-53
Non-rotating blade stabilizers, 3-19, 3-21 Prime mover, 1-5
Non-slugging, 8-4 Prime mover fuel consumption,
Nozzle throat, 11-59 5-46, 5-88, 9-73, 10-80
Nozzles, 6-11
Prime mover input power
requirements, 4-22
Prime mover power ratio, 8-52, 9-74
Oil based drilling muds, 9-1 Propane, 4-23, 4-33
Open orifices, 8-38 Pumps, 1-7
Openhole annulus, 8-33
Openhole outer wall absolute surface
roughness, 8-14
Openhole surfaces, 6-28, 7-15 Quad-cone drill bit, 3-8
Oxygen concentrations, 12-11

Reamer, 3-19
Parasite string, 9-6 Reciprocating compressors, 4-2, 4-7
Particles, 8-5 Reciprocating compressor unit, 4-23
Percussion air hammers, 3-12 Reciprocating piston compressor, 8-20
Pilot light, 2-21 Reduction in power, 4-23
Pipe ram, 2-13 Reference surface geothermal
Pipeline, 6-5 temperature, 6-7, 7-7
Piston compressors, 11-51 Reference temperature, 8-11
Plastic viscosities, 10-2 Reference temperature of the rock
Polyanionic cellulose, 10-1 formation, 8-11
Polycrystalline diamond compact bit Reverse circulation, 1-9, 3-4, 5-56, 7-1
(PDC), 3-6, 3-15 Reverse circulation operation, 1-9, 3-30
Polytropic process, 4-18
Pore, 9-2