Effect of Turbulence on Transient Flow of Real Gas Through Porous Media

Lee, R.L.; Logan, Roger; Tek, M.R.

doi:10.2118/14205-pa

Cited by 55 publications

(26 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The variation in gas properties such as z factor and viscosity are included in the definition of m ( p). Significant turbulent flow usually occurs in formations with high permeability (Tek et al 1962;Kolada 1968, Dranchuk andChwyl 1969;Katz and Lee 1990;Lee et al 1987). Therefore, turbulent effects on gas flow are not considered in the following solutions and analysis.…”

Section: Pseudo Pressure Functionmentioning

confidence: 99%

Analytical Solutions to Gas Flow Problems in Low Permeability Porous Media

Beygi

Rashidi

2010

Transp Porous Med

View full text Add to dashboard Cite

In most of conventional porous media the flow of gas is basically controlled by the permeability and the contribution of gas flow due to gas diffusion is ignored. The diffusion effect may have significant impact on gas flow behavior, especially in low permeability porous media. In this study, a dual mechanism based on Darcy flow as well as diffusion is presented for the gas flow in homogeneous porous media. Then, a novel form of pseudo pressure function was defined. This study presents a set of novel analytical solutions developed for analyzing steady-state and transient gas flow through porous media including effective diffusion. The analytical solutions are obtained using the real gas pseudo pressure function that incorporates the effective diffusion. Furthermore, the conventional assumption was used for linearizing the gas flow equation. As application examples, the new analytical solutions have been used to design new laboratory and field testing method to determine the porous media parameters. The proposed laboratory analysis method is also used to analyze data from steady-state flow tests of three core plugs. Then, permeability (k) and effective diffusion coefficient (D e ) was determined; however, the new method allows one to analyze data from both transient and steady-state tests in various flow geometries.

show abstract

Section: Pseudo Pressure Functionmentioning

confidence: 99%

Analytical Solutions to Gas Flow Problems in Low Permeability Porous Media

Beygi

Rashidi

2010

Transp Porous Med

View full text Add to dashboard Cite

show abstract

“…In underground storage or enhanced recovery, deliverability also relates to the rate at which gas can be injected from a well into the reservoir (Lee et al, 1984). The flow rate from a drainage area into a wellbore is a function of the properties of both the formation and the fluids, as well as the prevailing gradients of driving forces (Lee et al, 1987). To perform well deliverability calculations, the pressure drop in a gas well must be determined.…”

Section: Well Deliverabilitymentioning

confidence: 99%

Natural Gas Production

Wang¹,

Economides

2009

Advanced Natural Gas Engineering

View full text Add to dashboard Cite

“…2, Guppy et al (1982) derived a dimensionless non-Darcy-flow-rate factor from Forchheimer's equation to describe non-Darcy flow in a 1D fracture. Lee et al (1987) used a dimensionless turbulence-intensity number similar to the non-Darcy-flow-rate factor of Guppy et al (1982) to model non-Darcy flow in a radial system.…”

Section: Introductionmentioning

confidence: 99%

Semianalytical Model for Reservoirs With Forchheimer's Non-Darcy Flow

Zeng

Zhao

2008

SPE Reservoir Evaluation &Amp; Engineering

View full text Add to dashboard Cite

This paper presents a semianalytical model to investigate the effect of Forchheimer's non-Darcy flow on the transient pressure behavior of a vertical well in an infinite homogeneous reservoir. The model uses the Forchheimer number to accurately quantify the non-Darcy flow in the reservoir through differentiating it from sandface-flow-rate-dependent skin factor, which is used to model the inertial-factor variation around the wellbore caused by perforation or formation damage/stimulation.Type curves are documented for both drawdown and buildup tests for the first time by use of the semianalytical model proposed. It is observed that when non-Darcy flow in reservoirs and/or across completions is considered, the dimensionless pressure-derivative curves of drawdown tests have a wider transition region with gentler slopes, while those of buildup tests exhibit a shorter transition region with steeper slopes, similar to the observations of Kim and Kang (1994), Spivey et al. (2004) and Camacho-V et al. (1996). In the radial-flow period, compared with the cases of non-Darcy flow only across completions, the cases with non-Darcy flow in reservoirs for drawdown and buildup tests possess dimensionless pressure derivatives moving downward more gradually and smoothly to approach 0.5 at decreasing gradients. In general, the pressure derivatives of drawdown tests are larger than those of buildup tests before they converge to 0.5.With this model, the skin factor for non-Darcy flow across the completion and the dimensionless Forchheimer number for non-Darcy flow in the reservoir can be estimated from a common drawdown or buildup test. Guidelines for interpreting field test data are presented. Several typical cases from the literature are analyzed, and better type-curve matches and more-reliable results are obtained.

show abstract

Effect of Turbulence on Transient Flow of Real Gas Through Porous Media

Cited by 55 publications

References 8 publications

Analytical Solutions to Gas Flow Problems in Low Permeability Porous Media

Analytical Solutions to Gas Flow Problems in Low Permeability Porous Media

Natural Gas Production

Semianalytical Model for Reservoirs With Forchheimer's Non-Darcy Flow

Contact Info

Product

Resources

About