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MATHEMATICAL MODEL FOR DARCY FORCHHEIMER FLOW. WELL PERFORMANCE ANALYSIS WITH THE INTEGRATION OF NON-LINEARITY IN FLOW

Формат:      Страниц 132
     мягкая обложка
Автор:
Abiodun A.    
Издательство:
Книга по Требованию    
Год:2009
Цена:
2385 руб
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It showed the inadequacies inherent in Darcy' s law as a modeling equation for flow in porous media. Laboratory experiments were conducted to determine the criteria for and the onset of non-linear flow in core samples. It was discovered that non-Darcy flow will occur in a porous media as long as the pressure gradients in the porous media is sufficient. The main determining property for non-linearity is the permeability of the porous media. A mathematical equation was developed to model non-Darcy flow, following standard scientific procedures. The mathematical model developed was used to simulate reservoir behavior while considering Darcy and non-Darcy flow in the reservoir. COMSOL Multiphysics, a software used for solving partial differential equations (PDE) was used for the simulations. The results were presented, discussed and analyzed for several reservoir geometries. The results of this work is useful for reservoir engineers and production engineers who need to optimize flow rate and well performance. It will also be applicable in well diagnosis for remedial action or work over. This work reviewed several scenario where non-Darcy or non-linearity in flow exists in the reservoir.
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Эффективность проектов - давайте считать одинаково
Свободный денежный поток (free cash flow - FCF), равный OCF "I v (DI ves me s - изменение инвестиций во внеоборотные активы, равное притоку средств от продажи внеоборотных активов минус отток средств, связанных с приобретением внеоборотных активов). Поток FCF характеризует денежные средства, которыми располагают все провайдеры (поставщики) финансовых ресурсов для предприятия, как акционеры, так и кредиторы. Этот поток характеризует рыночную стоимость предприятия. Остаточный денежный поток (residual cash flow - CFr) или денежный поток к акционерам (cash flow o equi y - FCFE), равный FCF "FR (изменение денежных средств от финансовой деятельности, равное разности притоков средств от акционеров и кредиторов и оттоков при возврате заемных средств и уплате процентов за пользование ими). Поток FCFE характеризует остаток денежных средств в распоряжении акционеров после расчетов с кредиторами и показывает рыночную стоимость акционерного капитала предприятия. Поток FCFE , деленный на количество акций предприятия, находящихся в обращении характеризует рыночную цену акции. Таким образом: При оценке эффективности проекта в целом должен рассчитываться денежный поток, которым будут располагать все провайдеры (поставщики) финансовых ресурсов для проекта, т.е. FCF. Ставка дисконтирования принимается не ниже показателя ROA действующих предприятий в той же отрасли и с тем же типом продукции и не выше значений, получаемых по модели CAPM .


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