000			02088nab a2200193 4500
005			20260520004415.0
008			260224s2013 xxu ing
041			_aInglés
245	0	0	_aMethods To Obtain Quick Estimates of Formation Parameters in Interference Tests Derived From Features of the Line-Source Solution--Theory and Application
260			_a _b _cfeb. 2013
270			_a09/04/2013 ; 09/04/2013
300			_a10 p. ; 29-39
520			_aTranscripción del resumen del autor: Interference testing is the oldest, but still the most effective, way of establishing communication between wells and determining the interwell-reservoir transmissibility. Yet these tests are not run frequently because often the results are difficult to analyze as a result of unforeseen complications. This paper presents practical methods derived from the properties of the line-source solution that is used to design and interpret effective interference tests. In single-well transient tests, earlytime features of the exponential integral function occur too early to be observed. However, these features appear much later in an interference test and can be used in an observation well to estimate the storativity and transmissibility ratios of the reservoir. The pressure response and the log derivative of the pressure intersect on the log-log diagnostic plot, and the pressure response itself exhibits an inflection point. With these characteristics, simple geometrical methods are proposed to estimate reservoir parameters. Moreover, a new expression of the "lag time," or delay in the response, is formulated. The particular case of falloff or buildup is studied in detail, because the time lag in the reservoir response can bring extra information. A field example is included to demonstrate the application of these methods to actual data and their usefulness to a practicing well-test engineer.
581			_a1
773	0		_tSPE Reservoir Evaluation and Engineering _g16
942			_cARTICULO
100	1		_aMaizeret, Pierre-David _952964
999			_c187581 _d187581