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Index Terms Links

Gas injection systems 109
schematic diagram of 110
Gasified drilling. See Aerated liquid drilling

Gas-liquid flow rate window (GLRW) 194
boundaries of 194 194
collapse pressure analysis 198
construction of 204
fluid influx predictions 204
illustration of 194
underbalanced drilling pressure

differential 195 198
Gas–liquid ratio (GLR) 225 226 227
Gas–liquid separators 14 14
Gel strength 21
Gravity 174 176

H

Hagedorn–Brown separated flow model 189
Herschel-Bulkley fluids 20 21
characteristics of 62
flow behavior of 23
flow regime of 32 33
pressure loss estimations 45

Reynolds number for 32
rheological properties of 26
Hole cleaning 62 85
criteria for 128
formation fluid influx effects on 153
minimum gas injection rate for 138

minimum kinetic energy criterion for 132 153

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