... rate history flow period gringarten determination bayesian deconvolution permeability Introduction Well test analysis (WTA), also referred to as PTA (pressure transient analysis) has become over the years an important component of the reservoir management and monitoring process...

... flowing material balance technique (FMB, Mattar and McNeil 1998 , Agarwal et al. 1999 ) can be used to derive original fluid-in-place (OFIP). Because transient flow periods can last for a significant period of time, it may be desirable to estimate the amount of fluid-in-place contacted (contacted fluid...

... yield the following three flow periods: Period 1: Early Fractal-Formation (EFF) flow. This flow period is analogous to the formation-linear flow for conventional reservoirs. The transient signature of this flow period is only influenced by the conductivity index (reservoir heterogeneity fractal...

... enhanced recovery Upstream Oil & Gas Well Conformance hydraulic fracturing drillstem/well testing viscosity chemical flooding methods waterflooding flow period Drillstem Testing polymer injection pressure response salinity fracture pressure History Match injectivity trial...

... drillstem/well testing variation bottom-hole pressure potential energy reservoir fluid Drillstem Testing flow period reservoir pressure reservoir temperature kinetic energy equation temperature measurement perforation interval bottom-hole condition correction JT coefficient...

... production well test consisted of multiple flow periods at various choke sizes. In some flow periods, the choke size is kept constant to evaluate the impact of the pump rotation speed. In some wells, varying the PCP rotation speed resulted in increased oil production. Well tests have been typically...

... and transitional flow periods associated with ultra-low permeability reservoirs, lack a theoretical basis, and therefore input parameters may be difficult to constrain. However, empirical methods are simple to apply and require a minimum amount of data for forecasting. Analytical models, while better representing...

... estimation temperature profile interpretation invasion production logging flow period Kabir conductivity temperature data shut-in period permeability cleanup phase well 4 Introduction Investigators have studied near-wellbore formation damage from various angles over the years because near...

... and synchronization. tracer test analysis cumulative production directional drilling completion functionality concentration chemical tracer upstream oil & gas lateral icv spe 166076 cleanup tracer production rate tracer concentration drilling operation flow period cleanup efficiency...

... and coal types. drillstem/well testing dual packer module drawdown test interval interval pressure buildup upstream oil & gas flow period flow rate long-spacing configuration coal seam configuration permeability drillstem testing packer element wireline formation tester sample...

..., linear flow, and boundary dominated flow (BDF) periods. With the interpretation guidelines, various analysis equations for different flow periods or different physical conditions are used to interpret production data. Field examples are presented with the calculation procedures of interpretation...

... the mechanical behavior of both the rock skeleton and the fractures. The concept of stress-dependent skin around the wells producing from NFRs is discussed and formulated in this work. The behavior of such NFRs at different flow periods are described, from which we found that the effective-stress change can...

...-area pressure darcy pressure-loss term faf test sequence reservoir layered-reservoir system non-darcy term upstream oil & gas flow rate rate combination application deliverability parameter society of petroleum engineers av solution drillstem testing flow period pressure-loss term...

... deconvolution confidently as part of the well test analysis process. psia flow period well 1 history spe annual technical conference gringarten drillstem testing deconvolution drillstem/well testing exhibition pressure history reservoir upstream oil & gas rate history von schroeter...

... engineers to estimate OIP, OGIP, and reserves. Introduction reservoir pressure initial reservoir pressure graph production control transient flow period upstream oil & gas reservoir surveillance spe 135804 average reservoir pressure pss dimensionless pressure material balance...

... Upstream Oil & Gas flow period conductivity drillstem/well testing spe 124135 flow regime falloff period fracture Drillstem Testing numerical simulator fet test horizontal well dual-porosity system hydraulic fracturing derivative plot permeability fractured formation...

.... The simplest cases considered are based on a single flow period with the rate changing linearly from a low to a high value or from a high to a low value prior to shut-in, including cases starting or ending at zero. For such cases it is easy to overlook a simple flow model if single-rate analyses are attempted...

... Rate straight line flow period reservoir pressure procedure late-time data permeability Introduction Due to economics, time constraints and environmental issues, there has been increased interest in short-term tests for determining key parameters, such as reservoir pressure, permeability...

... be removed before the wavelet analysis in order to enhance its performance. We show that there is no unique "correct" wavelet transform to apply in any flow period. For example, for some datasets the Daubechies 1 wavelet at decomposition level 6 was used for flow periods, and level 3 for build up...

... flow period wellbore storage flow regime straight line stabilization Introduction Results that can be obtained from well testing are a function of the range and the quality of the pressure and rate data available, and of the approach used for their analysis. Consequently, at any given time...