... wells: Equation (2) (Available in full paper) Although Arps should be limited to the boundary-dominated flow portion of the production history where operating conditions (back-pressure) are relatively constant, practitioners regulary attempt to utilize Arps in the transient flow region. The transient...

... are more flexible and show more degrees of freedom, among which the cubic or B-spline curve are commonly applied to represent the relative permeability. boundary reference value permeability curve algorithm flow in porous media vector estimation optimization problem history matching...

... linear model radial reservoir boundary porosity model constant rate drillstem/well testing reservoir slab matrix region 4 equation time plot upstream oil & gas field data linear reservoir matrix complex reservoir drillstem testing shale gas rectangular geometry PAPER 2009-082...

... factors of each well. It is concluded that, for a given number of wells, well pattern, reservoir boundary conditions, anisotropic permeabilities and skin factor have significant effects on single well productivity and total productivity of the multiple wells system. For a given multiple wells system...

... boundaries. The method results from the incorporation of approximate analytical expressions for the pressure into the reservoir simulator's finite difference equations. By incorporating the "physics" of the flow into the solution, rather than relying on polynomial-based finite difference equations based...

... upstream oil & gas boundary well index modeling & simulation grid refinement numerical simulation reservoir simulation PETROLEUM SOCIETY CANADIAN INSTITUTE OF MINING, METALLURGY & PETROLEUM PAPER 2006-161 An Investigation of Grid Design Characteristics in Numerical Modelling of Horizontal...

...). The analytical models provide formulations for the flow rate required to induce tensile failure. Tensile failure of the material due to seepage drag forces is taken as criterion for sand production. Their limitation is the general constraints with respect to geometry, boundary conditions, and implementation...

... in the pattern. upstream oil & gas injection shut-in period boundary reservoir pressure injector permeability drillstem testing pressure response interference test sinkhole well 91 saturation information communication observation well enhanced recovery active well bakken sand...

... are those presented by Fetkovich. (1980). typecurve permeability production data reservoir permeability boundary drillstem testing pressure transient analysis production forecast transient analysis igip flow parameter equation modeling & simulation reservoir surveillance dim...

... be gained by well testing are belonging to this region. For a better understanding of the drainage area concept, it can be considered that when a well starts to produce, a pressure disturbance is moving from the well to the boundaries. In this part of time, wells drainage area will become large...

... on the average reservoir pressure and works very well for boundary dominatedflow. However, when transient flow prevails, the pseudo-time concept is not valid and its use can create anomalous responses. This will occur in low permeability systems or in reservoirs with irregular shapes, especially where some...

... of the reservoir behave continuously and smoot deviation heterogeneous reservoir pressure transient analysis base permeability drillstem testing permeability distribution magnitude drillstem/well testing permeability pressure response homogeneous reservoir boundary upstream oil & gas...

... authors. Ayestaran and Nurmi 7 presented a reservoir description of a heterogeneous reservoir using well testing. They confirmed the existence of reservoir boundaries, faults, and low permeability region in a reservoir. Massonnat and Bandizoil 8 integrated the geological and well test data in order...

... Abstract Traditionally if a multiple boundary is suspected in a hydrocarbon reservoir, it is analyzed for its location from the well and its degree of leakage if it is a single communicating fault. Although a well in multiple leaky boundaries presents a very important flow problem...

... of varying quality, thicknesses, drive mechanisms and state of depletion. A vertical well in the range of five thousand feet is likely to encounter 20–50 flow units each separated by no-flow boundaries. These no-flow boundaries could be as thin as 2'. Even after more than 50 years of production, many...

... drainage volume with constant pressure at edge boundary. We also provide the formulae to calculate pseudo-skin factor due to partial penetration. And if the producing well length is equal to the pay zone thickness, the equations of fully penetrating wells are obtained. Introduction For both fully...

... in determining an analytical solution for near well bore characteristics and reservoir boundaries. A pseudo-compositional thermal simulator was used to generate reservoir pressure responses by shutting off an injector at different periods of time and monitoring the pressure falloff while continuing...

... a time function capable of converting general production conditions into the equivalent constant rate solution. Blasingame 1 , and later Agarwal et al 2 have shown that Material-Balance-Time provides an exact transformation of constant pressure data to constant rate type curves, during the boundary...

.... tight gas reservoir boundary permeability streak drillstem testing production monitoring modeling & simulation fractured well permeability layer high permeability streak fluid dynamics tight gas well linear flow reservoir drainage area thickness hydraulic fracturing fracture...

... sensitive to the combination of liquid and gas injection rates. Due to the complex nature of water, oil, gas and solid multiphase phase flow in the UBD systems, numerous runs of sophisticated computer programs are required in UBD design. An innovative procedure to delineate the boundary of the safe liquid...