... completion hydraulic fracturing fluid dynamics initial reservoir pressure upstream oil & gas modeling & simulation buildup analysis effectiveness flow capacity knowledge permeability drillstem testing fracture length buildup test buildup duration tight gas evaluation...

... fluid influx. When employing straight-line analysis techniques, acceptable estimates of initial reservoir pressure, permeability and skin are only obtained if the test duration is sufficient to achieve radial flow. This is usually not a problem in high permeability reservoirs. However, in low...

... constant (Equation A-4) gc = cgi = Gas compressibility at initial reservoir pressure, psi-1 co = Oil compressibility, psi-1 G = Original gas in place, MMscf Gp = Cumulative gas produced, MMscf h = Pay thickness, ft k = Reservoir permeability, md N = Original oil in place, Bbl Np = Cumulative production...

... conventional well test drillstem/well testing reservoir pressure equation late-time data initial reservoir pressure reservoir-dominated flow reservoir parameter wellbore upstream oil & gas impulse derivative drillstem testing wellbore storage influx permeability initial...

... steam zone sagd operation law constant gas production methane low pressure sagd operation critical point coefficient initial reservoir pressure henry enhanced recovery upstream oil & gas solubility thermal method bitumen steam-assisted gravity drainage operation sagd oil...

... successfully tested in oil reservoirs. The study qualifies DWS concept for gas wells by comparing simulated performances of a conventional well, and a DWS well. The simulation runs were made over a broad range of the initial reservoir pressure and permeability values for a gas reservoir with large associated...