000			01942nab a2200181 4500
005			20260520001753.0
008			260224s2009 xxu
245	0	0	_aAppraisal of complex reservoirs with short-time tests
260			_a _b _cjun. 2009
270			_a14/06/2010 ; 10/06/2010
300			_a6 p. ; 165-170
520			_aTranscripción del resumen del autor. The utility of short-time tests to obtain the description of a reservoir with complex geology is evaluated. Using a porosity cube that is representative of the Brent reservoir in the North Sea, a series of independent tests is simulated and results are evaluated as a function of depth. The characteristics of the signatures are documented. An understanding of these signatures is particularly useful in that the overwhelming majority of the signatures is quite different from what we expect in REV-type models. Over 170 independent tests as a function of depth are evaluated, the permeability profile is computed and compared with the in situ profile and conclusions are derived. The conclusions that may be derived depend on the specifics of the model used to evaluate the pressure response. The fact that the estimation of permeability is a function of scale is recognized and attention is drawn to the fact that, if properly analyzed, such tests must reflect scale dependency. Permeability estimates of short-time tests essentially yield values of permeability in the immediate vicinity of the perforation; thus, it is best to use data that represent local values to calibrate a model that reflects the underlying geology. Conventional interpretations will yield conservative estimates of well deliverability unless careful calibration is done with a model that carries the geological imprint.
581			_a3-4
773	0		_tJournal of Petroleum Science & Engineering _g66
942			_cARTICULO
100	1		_aRaghavan, Rajagopal _926633
999			_c170919 _d170919