... injection Upstream Oil & Gas reservoir pressure falloff survey wellbore equation Wellbore Fluid pressure transient analysis wellbore storage injection reservoir society of petroleum engineers Introduction When wells are first switched online after drilling and completing...

... and buildup. Compared with conventional testing, improved operational efficiency is achieved through more efficient wireline conveyance, improved packer isolation, reduced wellbore storage, ability to conduct downhole fluid analysis, precise downhole rate control, and surface readout and real-time data...

... for their production forecast and reserves recovery assessments. The explanation of these permeability differences relies on the interpretation of coal stress parameters provided by the DFIT analysis. Furthermore, the appropriate integration of the DFIT, DST and IFT analysis results with wellbore storage, wellbore...

... pressure transient response Exhibition buildup period radial flow stabilization mobility pressure derivative permeability Upstream Oil & Gas pressure drop wellbore storage reservoir Introduction The first generation of wireline formation tester tools (as shown in Figure 1...

... temperature at that depth. When a gas well is shut in, JT cooling effect is vanished and this causes a sudden sharp increase in sandface temperature. Then as the effect of wellbore storage ends, wellbore temperature gradually cools down due to heat conduction with near wellbore region. This paper...

... dimensionless pressure flow regime horizontal well reservoir wellbore storage drillstem testing pressure derivative determination identification al-kaabi spe 77878 drillstem/well testing regime dimensionless pressure derivative model generalized modular 1 0 Introduction Well testing...

..., wellbore storage, fracture conductivity, fracture skin, mobility ratio, and injection period. The type curves are compared in detail with pressure transient (build-up/fall-off) behaviour known from the literature, particularly with the aim to identify the well-known "storage", "linear", "bilinear...

... methane well upstream oil & gas packer interpretation new development testing procedure skin factor fracture drillstem/well testing seam spe 36983 permeability polymer mud wellbore storage coal seam rock type coalbed methane hydraulic fracturing coal seam gas flow in porous media...

... plot ( Fig. 9 ) shows wellbore storage and humping effects, and a straight line section due to early-time radial flow. The estimated (K h K v ) 0.5 L is 156990 md-m ( Table 4 ), and total skin is found to be 0.6. The skin factor is adjusted for the frictional pressure drop between the pressure gauge...

... was then theoretically justified by Swift and Keil 13 . Ramey 14 studied the effects of non-Darcy flow and wellbore storage on both pressure buildup and drawdown where Non-Darcy effect is treated as a rate dependent skin term. Wattenbarger and Ramey 15 proposed a method to evaluate the rate dependent skin term...

... in this reservoir could be further increased by improvements in created fracture conductivity. wellbore storage permeability log-log plot fracture half length drillstem/well testing fracture stimulation evaluation upstream oil & gas cumulative production drillstem testing type curve hydraulic...