... considering skin effect and wellbore storage in three classical reservoir types: confined reservoir, semiconfined reservoir, and reservoir with mixed boundaries. Green's function, source functions, Laplace transform, and Duhamel's principle were used to solve the models and obtain analytical solutions...

... well with a single finite conductivity vertical fracture, where a Taylor Series expansion is used to obtain an asymptotic solution for early-time flow, which includes terms for wellbore storage and fracture conductivity. The well-testing derivative of this result is then obtained and is of a similar...

... reservoir fractured shale gas reservoir fracture permeability fractured reservoir wellbore storage Upstream Oil & Gas dimensionless parameter shale gas reservoir matrix equation society of petroleum engineers production rate Introduction The decline of conventional natural gas...

... Starting from Duhamel's Principle, Kuchuk (1986) presented a recursive algorithm that allows wellbore storage and skin effects to be added to liquid solutions which do not have these effects. Mathematical Formulation In terms of the pseudo-pressure function, the diffusivity equation...

... by fracture opening, includes wellbore storage, and uses a nonlinear joint closure model to describe the evolution of fracture compliance after closure ( McClure and Horne, 2013 ). The simulations indicated that a concave up trend on a G*dP/dG plot can be explained as a natural consequence of the decreasing...

... transient data generated by using our discretely and continuously fractured reservoir model with the Warren and Root (1963) type dual-porosity models are also presented. hydraulic fracturing drillstem/well testing wellbore storage drillstem testing discretely fractured reservoir conductivity...

... for appraisal of other discoveries. upstream oil & gas crude zone 1 flow rate wellbore storage operation drillstem testing completion basin uganda zone 2 pcp insert pcp testing operation spe 159163 artificial lift drillstem/well testing pcp completion progressive cavity pump...

.... (3) is used interchangeably for both drawdown and buildup tests. Moreover, Eq. (3) expressed in real variables is given as follows: (4) Δ p w s ≈ m w s Δ t , m w s = q B 24 C During the period dominated by wellbore storage, pressure...

... et al (2004) 1 require the individual shut-in responses to be consistent in terms of wellbore storage and skin. An alternate method by Levitan (2005) 2 allows inconsistent early time responses to be combined, but requires multiple deconvolutions and an iterative search of the reservoir initial...

... sink strength. We also derive a multi-well generalization of the fractional transform in the Laplace domain which adds skin and wellbore storage to a reservoir model and find that its impact on reciprocity is neutral: It preserves reciprocity if it holds for the reservoir model. Drillstem Testing...

... change in wellbore storage constant. The solution procedure is as follows: Analysis Procedure The analysis procedure presented in this study is simple enough to implement in a spreadsheet, but is more accurate than the currently available methods. However, this process is valid only when the late...

.... With these assumptions, we derive a mathematical model and analytical solutions in the Laplace space for transient flow toward a well in an infinite and finite reservoir. In addition, wellbore storage and skin effects are included. As application examples, actual well test data from a fractured-vuggy reservoir...

... pressure wellbore storage dynamic reservoir simulator well-reservoir interaction interaction gas fraction gas breakthrough spe annual technical conference reservoir Introduction Production instabilities are undesirable and play a crucial role in the production lifetime and ultimate recovery...

... & Gas notice y-axis Drillstem Testing significance level variance confidence interval wellbore storage reservoir skin factor hypothesis pressure transient testing hypothesis testing regression analysis buildup probability Artificial Intelligence drillstem/well testing mean value rate...

... Once we obtain the β(t D ) function, we utilize Eq. 3 as the mechanism for directly estimating the "undistorted pressure drop" function. The obvious advantage of " β -deconvolution" is that the wellbore storage effects are eliminated using only the given pressure data. Methodology...

... or multiphase flow around the well 20 . Type curve analysis 18 , 21 – 27 was introduced by Ramey 18 to get an insight into the meaning of the skin and therefore on the means to cure it. Particular emphasis was placed on wellbore storage (Ramey et al . 21 ), high conductivity fractures (Gringarten et...

... Drillstem Testing wellbore storage effect vertical fracture approximation perpendicular fault fractured well unfractured well drillstem/well testing skin effect pressure derivative homogeneous reservoir horizontal well type curve β-derivative function Upstream Oil & Gas...

... equivalent time buildup data shut-in time production control characteristic conclusion storage reservoir surveillance pressure expression petroleum engineer long buildup derivative production monitoring wellbore storage buildup expression drawdown derivative spe 102699 accuracy...

... hump upstream oil & gas drillstem/well testing investigation wellbore storage phase redistribution pressure transient testing pressure transient analysis reservoir bubble flow flow regime Introduction Wellbore phase redistribution (WPR) occurs in wells where more than one phase...

... and increase our confidence in parameter estimates. application wellbore storage effect pressure transient analysis sequence test sequence pressure response drillstem/well testing pressure transient testing field example upstream oil & gas fourier transform initial reservoir pressure rate...