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Index Terms Links

Shear stress 20
fluids and 20 20
Side-jet subs 215 215

Single-action piston stroke 74 75
Slug flow 174
Snubbing units 169
Solid-removal equipment. See
Contaminant-removal equipment
Solids 121
Sonic flow 157

Specific weight of gas 133
Sphericity 55
Standpipe pressure gauge 127
Subcritical flow 157
Subsonic flow 157
Surface equipment 35 36

air drilling systems 109 110
gas drilling systems 109
natural gas drilling system 111
nitrogen gas drilling system 109 112
underbalanced drilling systems 167 168
Surge pressure 49 97 103
SurgeMOD (surge and swab hydraulics

computer model) 98 101
Swab pressure 49 97
Swivel 6 10
Swivel sub 6 10

T

Terminal slip velocity of cuttings 54

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