...Jeffrey A. Joseph; Leonard F. Koederitz This paper presents short-time interpretation methods for radial-spherical (or radial-hemispherical) flow in homogeneous and isotropic reservoirs inclusive of wellbore storage, wellbore phase redistribution, and damage skin effects. New dimensionless groups...

...Abdurrahman Satman This paper discusses the interference test in composite reservoirs. The composite model considers all important parameters of interest: the hydraulic diffusivity, the mobility ratio, the distance to the radial discontinuity, the distance between wells, the wellbore storage...

...Hubert Winston The nature of wellbore storage is such that afterflow during a pulse test can affect the reservoir pressure performance and can lead to the calculation of erroneous values for formation transmissibility and storage. This is most likely to occur when the wells of interest are close...

...Constance W. Miller; Sally M. Benson; Michael J. O'Sullivan; Karsten Pruess A method of designing and analyzing pressure transient well tests of two-phase (steam/water) reservoirs is given. Wellbore storage is taken into account, and the duration of it is estimated. It is shown that the wellbore...

... boundary and constant-pressure outer boundary. The results were used to derive a new expression for the stabilization time for power-law flow in porous media. Wellbore storage and skin effects always distort the transient pressure behavior of wells in petroleum reservoirs. It is important to investigate...

... vertical pulse testing observation well boundary fluid flow Upstream Oil & Gas skin effect well pair pressure response storage Drillstem Testing sand-face flow rate wellbore storage application pulse testing drillstem/well testing source well reservoir porous media reciprocity...

... for five different sets of rock and fluid properties. The investigation also includes the effects of wellbore damage and wellbore storage. MATHEMATICAL FORMULATION To formulate the mathematical model, the assumptions usually used in well-testing theory are applied. We assume horizontal flow with no gravity...

... storage and various skin effects such as those due to perforations, partial penetration, non-Darcy flow, or well stimulation effects. Recently, Agarwal et al. presented a fundamental study of the importance of wellbore storage with a skin effect to short-time transient flow. This paper further extends...

... as pressureinformation obtained prior to the usual straight-lineportion of a well test. For some time there has been portion of a well test. For some time there has been a general belief that the factors affecting short-timedata are too complex for meaningful interpretations. Among these factors are wellbore storage...

...Robert A. Wattenbarger; H.J. Ramey, Jr. An investigation of the effect of wellbore storage and skin effect on transient flow was conducted using a finite-difference solution to the basic partial differential equation. The concept of skin partial differential equation. The concept of skin effect...