... to support the findings of this paper. Upstream Oil & Gas transition wellbore storage spe 164525 hydraulic fracturing buildup test vertical radial flow linear flow reservoir Drillstem Testing early transition transition region radial flow unconventional reservoir derivative plot...

... on reservoirs and wells with a variety of operating conditions. A number of computational and quality issues are addressed including Laplace space inversion methods; addition of wellbore storage and skin (at wellbore and observation points); incorporation of absorbed gas for unconventional gas systems; pressure...

... 50.7 md 11.6 md Permeability ratio, k 1 /k 2 64.5 N/A Permeability, (Layer 1), k 1 2000 md N/A Permeability, (Layer 2), k 2 31 md N/A Skin factor (dimensionless) 1 ֊4 Storativity ratio, ω N/A 1×10 −2 Wellbore storage coefficient, Cs 6.0×10 −3 RB/psi 5.0×10 −3 RB...

... for radial flow and when the wellbore storage has ceased. Winestock and Colpitts suggested the following equation for a well producing with smoothly changing rate: 1 (4) ( p i − p w f q g ) = 70.6 × B g × μ k g × h { ln ( k g × t...

... Forchheimer Upstream Oil & Gas buildup test wellbore storage non-darcy flow type curve permeability society derivative modifier di 1 effect spe 100540 characteristic Introduction In 1901, Forchheimer 1 found that Darcy's law is inadequate to describe the high-velocity gas flow...

... in porous media production logging production control production monitoring reservoir characterization wellbore storage equation resource in place estimate estimates of resource in place reservoir surveillance pressure transient analysis method case procedure university Introduction...

... Abstract This paper presents a simple and accurate method to determine all the reservoir parameters for transient constant-pressure drawdown data of gas wells influenced by wellbore storage, formation damage, and high-velocity flow effects. The working equations are written in such a way...

... velocity effect coefficient velocity coefficient wellbore storage derivative response flow in porous media formation damage high velocity effect pseudopressure crossflow damage zone firoozabadi drillstem/well testing reservoir drillstem testing permeability flow rate fluid dynamics gas...

..., performed, and interpreted, these tests provide valuable information on the well's skin condition. Wellbore storage becomes a very important factor with a surface shut-in. In addition to the wellbore fluids' compression and phase changes, temperature effects may be significant and extended depending...

... for radial flow. The boundary condition at the wellbore included the use of chokes to control flow rates. Wellbore storage and non-Darcy flow effects were also included in the numerical simulation. Both Rawlins and Schellhardt empirical equation as well as the theory-based pressure drawdown equation were...

... equation tank test water level reduction drillstem testing drillstem/well testing injection test wellbore storage small diameter diameter investigation procedure gauge permeability upstream oil & gas downhole shutin injection falloff test reservoir injection rate...

... fractures including wellbore storage and fracture-face skin. Examples are provided. Introduction In 1980, Agarwal derived an "equivalent drawdown time" to account for producing time effects when drawdown type curves are used to analyze pressure buildup and other test data. Agarwal's equivalent drawdown...

... Abstract A new analytical solution for the pressure response of a well intercepting a finite-conductivity fracture is presented. We examine the effects of fracture conductivity, fracture height, drainage boundary size, wellbore storage and phase segregation on the pressure response...

... Abstract This work shows the results of a systematic study of transient pressure analysis of gas flow under either constant bottom-hole pressure conditions or the constant wellhead pressure conditions. The effects of formation damage, wellbore storage and high-velocity flow are included...

... Abstract This paper presents a new method for analyzing gas well test data distorted by wellbore storage. The method that we propose in this paper is an explicit deconvolution method which is independent of the reservoir model. As is well known, the deconvolution procedure corrects test data...

... wellbore storage spe 19100 olarewaju phase segregation distortion drillstem/well testing distortion segregation distortion drillstem testing radial flow reservoir curve match type curve upstream oil & gas buildup data segregation analytical model phase segregation buildup...

...SPE Society of Petroleum Engineers SPE 15229 The Use of Pseudotime: Wellbore Storage and the Middle Time Region by J.P. Spivey, SoftSearch Inc., and W.J. Lee, Texas A&M U. SPE Members Copyright 1986, Society of Petroleum Engineers This paper was prepared for presentation at the Unconventional Gas...

... on permeability paper shows the effect on permeability estimates of wellbore storage, variable rate history (including shut-in periods), and uncertainties in skin factor. These effects were determined using finite-difference reservoir simulation. P. 175 flow rate drillstem/well testing equation...

... devonian shale reservoir type curve buildup interference data wellbore storage reservoir permeability drillstem testing well 100568 fracture SPE/DOE 10838 SPE/DOE Society of Petroleum Engineers U.S. Department of Energy Evaluation of Devonian Shale Reservoir Using Multi-Well Pressure Transient...