Browsing by Subject "reservoir simulation"

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Access status: Restricted ,
Analiza wpływu wyboru wtórnej metody eksploatacji na efektywność sczerpania złoża o podwójnej porowatości z wykorzystaniem modelowania symulacyjnego
(Data obrony: 2016-06-28) Szyk, Paweł
Wydział Wiertnictwa, Nafty i Gazu
Access status: Open Access ,
Development of reservoir simulation Mittelplate - a challenge for technology
(2007) Boy, Andreas
Mittelplate, the largest German offshore oil field, is located in the estuary of the Elbe river in the North See. From October 1987 until June 2005, 15 million tons of oil were produced from three different reservoir sections. These reservoirs, called Beta, Gamma and Epsilon/Delta, show different production history and behavior. The bulk of the oil was produced from the Gamma and Epsilon/Delta reservoirs. These reservoirs are high-permeability reservoirs with an active aquifer. In contrast, the lower-permeability reservoir Beta contains most of the reserves of the field to be produced. This reservoir has no active aquifer and needs water injection to maintain pressure and production. Because of limited water availability, optimum distribution of the injected water is essential for optimum recovery from the field. Development of such a configuration with complex boundary conditions can only be achieved through reservoir simulation. First, small models were developed to solve problems like single well productivity estimation, aquifer size estimation and communication between wells within a pilot flood area. The base of field knowledge grows continuously during the life cycle. New seismic interpretation and new geological studies, including differentiated facies descriptions, lead to new reservoir models with different geological realizations. These realizations were studied to simulate possible future developments. In addition, facility constraints like pump limitations and water conditioning are limiting factors for the field development. Combining facility constraints with different geological models is the main task in simulation today. The target is not to arrive at one 'optimum' forecast, but to show the spread of possible field development scenarios from which an appropriate one can be chosen. This complex situation is a challenge for the Mittelplate consortium of RWE Dea AG and Wintershall.
Access status: Open Access ,
Elements of reservoir simulation for tight gas reservoirs with water influx
(AGH University of Science and Technology Press, 2021) Sowa-Zyzańska, Magdalena
At present, gas obtained from unconventional deposits plays an important role in the global economy as an energy factor. The simulation of the exploitation of this type of deposits is very complex and requires an individual approach for each case, which is extremely inspiring and interesting, therefore this article attempts to deal with the problem of modeling the extraction of natural gas from tight unconventional deposits. Extraction of tight gas requires the use of measures that stimulate this process and requires an unusual approach both at the stage of deposit recognition, its drilling and exploitation. Using computer programs, more and more accurate models are developed taking into account almost all known processes occurring in the deposits during exploitation, which significantly influences the better selection of parameters of wells and operations that intensify the production, and thus improves the results of exploitation.
Access status: Open Access ,
Integrated model of hydraulic fracturing and hydrocarbon production
(2014) Stopa, Jerzy; Wojnarowski, Paweł; Janiga, Damian
The dynamics of discovering conventional hydrocarbon reservoirs has significantly dropped down in the World over the last ten years. Resources deposited in reservoirs having poor properties, where the production with economically justified yield is possible after prior enhancement (hydraulic fracturing in particular), become more important. Accordingly, proper designing of development works and hydraulic fracturing are decisive. Author's methodic and software for integrated modeling of hydraulic fracturing and production with the use of a 3D fracture model are presented in this paper. This can be used for evaluating the efficiency of the fracturing treatment and its optimization. The results of hydraulic fracturing modeling were implemented in the reservoir simulator with the software written in C++. The designed fracture can be introduced into a numerical grid of a reservoir simulator. This tool can be a choice for a quick variant simulation for the best scenario of reservoir development selection. The practical implementation of this program was presented on the example of a »tight gas« reservoir.