فارکس چیست Forex

تجزیه و تحلیل فراکتال است

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تجزیه و تحلیل گذرای فشار از تغییر شکل متوسط ​​فراکتال

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Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Journal of Hydrodynamics, Ser. B , Volume 20, Issue 3, June 2008, Pages 306–313

پیش نمایش مقاله تجزیه و تحلیل گذرای فشار از تغییر شکل متوسط ​​فراکتال

چکیده انگلیسی

The assumption of constant rock properties in pressure-transient analysis of stress-sensitive reservoirs can cause significant errors in the estimation of temporal and spatial variation of pressure. In this article, the pressure transient response of the fractal medium in stress-sensitive reservoirs was studied by using the self-similarity solution method and the regular perturbation method. The dependence of permeability on pore pressure makes the flow equation strongly nonlinear. The nonlinearities associated with the governing equation become weaker by using the logarithm transformation. The perturbation solutions for a constant pressure production and a constant rate production of a linear-source well were obtained by using the self-similarity solution method and the تجزیه و تحلیل فراکتال است regular perturbation method in an infinitely large system, and inquire into the changing rule of pressure when the fractal and deformation parameters change. The plots of typical pressure curves were given in a few cases, and the results can be applied to well test analysis.

مقدمه انگلیسی

Numerous experiments have proved that the formation of تجزیه و تحلیل فراکتال است oil reservoir and the fracture network تجزیه و تحلیل فراکتال است distribution of fractured reservoir are fractal structures. Therefore, the flow theory of fractal reservoir has been developed and applied to oilfield. Fluid flow in hydrocarbon reservoirs and ground water aquifers have been traditionally studied by assuming the formation permeability is constant[1-6]. These assumptions in the fluid flow analysis have given good results in many situations, but with increasing exploitation of petroleum and geothermal resources from low-permeability and fractured formations, theseassumptions need to be re-evaluated. Kikani[7] presented the flow model for cylindrical flow systems of deformed media. A perturbation technique was تجزیه و تحلیل فراکتال است applied to determine the approximate solution and analyze the flow characteristics of deformed media reservoir. Yeung[8] considered the spherical flow problem of deformed media reservoir. A simple technique was applied to obtain approximate solutions, but the error is large. The generalized pseudo تجزیه و تحلیل فراکتال است pressure function was introduced to characterize the gas flow in pressure-sensitive reservoir[9]. The flow analysis for stress-sensitive reservoirs with double porosity was studied[10-16]. But the flow analysis for stress-sensitive fractal reservoirs has not been performed. Radial and spherical flow in homogeneous reservoir are special cases of fractal reservoir[1] ( = or 3 , and f d

نتیجه گیری انگلیسی

1) Fractal dimensions have been introduced to the flow equation of تجزیه و تحلیل فراکتال است fluids in fractal reservoirs. The flow model has more extensive adaptability compared with the traditional ones. (2)The تجزیه و تحلیل فراکتال است similarity solutions for the flow models of fluid in fractal reservoir with both the constant rate production and the constant pressure production have been obtained by using similarity solution method. (3) The perturbation solutions for a constantpressure production and a constant rate production of linear-source well have been obtained by using the regular perturbation method in an infinitely large system. (4) With time increasing, the effect of D becomes remarkable. With increasing D

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