... timestep discharge coefficient mesh geology spe production assumption proppant particle sensitivity simulation geologist Multistage hydraulic fracturing of horizontal wellbores in unconventional plays has been at the forefront of North American oil and natural gas production for over two...

... model), which is sometimes cumbersome and involves making assumptions regarding the degree of risk aversion (that is, rational investors with homogeneous expectations who only care about their mean-variance portfolio). This traditional valuation procedure is dependent on the time-value-of-money...

..., Society of Petroleum Engineers calcite formation reservoir temperature assumption fracture surface hydraulic fracturing pad fluid acid productivity concentration Dolomite formation coefficient SPE Production Upstream Oil & Gas acid concentration fracture half-length reaction acid...

... & Gas pressure drop skin factor flow in porous media Fluid Dynamics wormhole network horizontal well Completion Installation and Operations anisotropy ratio assumption SPE Production anisotropic wormhole network permeability perforation reservoir horizontal permeability equation...

... component upper part SPE Production interaction ph assumption cph model University stratification assumption informatively installation Bailey This paper follows the life of a specific ESP motor (Series 562), serial No. #783039 (from here onward denoted as M ). We track its use...

... 4 2 2014 24 11 2015 Copyright 2015, Society of Petroleum Engineers Modeling & Simulation drillstem/well testing hydraulic fracturing lateral Drillstem Testing fracture length recovery conductivity optimization system permeability assumption SPE Production 000-ft...

... characterizing the oil tendency to the aggregate, the oil from different reservoirs has been compared. Because of the temperature gradient between rock (permafrost) and oil, there is a probability of wax deposition in the tubing. The deposition-growth model makes different diffusion assumptions. The equilibrium...

... and Sikora 1960 ; Prats 1961 ; Binder and Raymond 1967 ). The existing models assume either elliptical or radial flow around the well, with permeability varying azimuthally. Significant differences in the calculated well productivity indicate that earlier assumptions made regarding the flow geometry can lead...

...Kyle Friehauf; Mukul M. Sharma Summary Traditional fracturing models regard fracturing fluids as a single-component, single-phase fluid. This assumption is clearly incorrect for energized fluids where phase changes and mass transfer between phases play important roles in controlling fluid rheology...

... the liquid and gas phases as they pass through the choke. The theoretical basis of the model is a 1D balance equation of mass, momentum, and energy with the assumptions of constant quality and incompressible liquid phase. The present slip model is capable of predicting the critical-subcritical-flow boundary...

... governing the conservation of mass in one-dimensional flow, according to the deep-bed filtration theory, is ( Bedrikovetsky et al. 2002 ): (1) ϕ ∂ c ∂ t + ( 1 − ϕ ) ∂ σ ∂ t + u ∂ c ∂ x = 0. An assumption of the above analysis is that the inlet...

... in a simple manner. The new model improves this aspect and makes more-realistic and -detailed assumptions with respect to the production and injection interval. Analysis of the results this new model produces improves the understanding of the processes occurring down-ole. This analysis can also be used...

... valve ipo valve Upstream Oil & Gas flow rate kickoff pressure Injection Rate production pressure equation gas injection injection pressure available wellhead-injection pressure port Valve Performance valve gas lift assumption ipo gas lift design unloading valve psig gas Lift...

... function SPE Production final model Motor series application manufacturer spe production & operation november 2006 assumption statistics survival curve esp system The critical importance of ESP system performance to field economics and deliverability has been well documented ( Allis...

... and Economides assumed that the depth of damage would be greatest at the heel of the well, decreasing linearly to a minimum value at the toe of the well. This assumption is based on damage being caused by the time of exposure to drilling fluid. From these geometric assumptions about the distribution of damage...

... rate fracture conductivity correlation spe production reaction assumption modeling coefficient sensitivity acid diffusion concentration simulation agreement leakoff november 2001 equation boundary condition hydraulic fracturing upstream oil & gas production control production...

...D. B. van Dam; C. J. de Pater; Remco Romijn Summary Conventional models of hydraulic fracture closure make assumptions about the fracture geometry and rock mechanical behavior. In this paper we present the results of scaled laboratory experiments. We show that deviations from conventional...

... testing leakoff coefficient assumption leakoff law hydraulic fracturing reservoir drillstem testing drilling fluid selection and formulation fluid loss control & facility drilling fluid chemistry drilling fluid property drilling fluid formulation closure well control drilling fluids...

... assumption to describe the transport of solid particles. Laminar and nonlaminar (drag-reduced) friction pressures, the transition criterion, and solid settling velocity are given in a unified framework. It is widely accepted that the presence of other particles hinders the settling by the following main...

... 17 11 1993 16 11 1993 1 2 1994 1 2 1994 Copyright 1994, Society of Petroleum Engineers Hydraulic fracturing is a complex nonlinear mathematical problem that involves the mechanical interaction of the propagating fracture with the injected slurry. Several assumptions...