Wiertnictwo, Nafta, Gaz
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ISSN 1997-2011
e-ISSN: 2300-7044
Issue Date
2009
Volume
T. 26
Number
Nr 1-2
Description
Journal Volume
Wiertnictwo, Nafta, Gaz
T. 26 (2009)
Projects
Pages
Articles
Wydział Wiertnictwa, Nafty i Gazu w 90-lecie Akademii Górniczo-Hutniczej w Krakowie
(2009) Gonet, Andrzej; Siemek, Jakub; Stryczek, Stanisław; Rychlicki, Stanisław
Study of uranium extraction process by the in-situ leaching method
(2009) Alibaeva, Karlygaš Abylhakovna; Tungatarova, Madina Sovetkalievna; Kul'džabekov, Alibek Bahidžanovič; Kaltaev, Ajdarhan; Bibosinov, Asylhan Žanibekovič
In present work modeling of mineral extraction by the In-Situ Leaching (ISL) method is considered. The low concentration deposit of uranium, gold, boron and other minerals is mined by the In-Situ Leaching method. The hydrodynamic pressure equation, Darcy law, equation of mineral dissolution, equations of liquid solution and dissolved mineral transfer in layer are described the processes leaking in exploitation block in mining mineral by ISL method. Because of nonlinearity of pressure equation, in general case iterative method over relaxation is used to solve it. The velocity field is defined from Darcy's law using hydrodynamic pressure distribution. The system of mineral dissolution equation, fluid solution and dissolved mineral transfer equations are solved together. The algorithm of these equations is following: equation of reagent transfer is obtained on each time step with ''classic''scheme. Using reagent distribution, mineral distribution on layer and concentration of dissolved useful component are defined from equation of mineral dissolution and transfer of dissolved mineral equation subsequently. The linear and hexagonal location of wells is considered. 3D fields of hydrodynamic pressure and velocity on layer under set of wells and the reagent distribution on layer, distribution of mineral in solid and fluid phase are obtained. The influence of wells location on rate and time of mineral extraction is investigated at the mining of mineral with ISL method.
Znaczenie pomiaru sił napinających w linach odciągowych masztu dla jego bezpiecznej eksploatacji
(2009) Artymiuk, Jan; Bednarz, Stanisław
Drilling mast as a light steel mobile design commonly telescoped is provided for hoisting operations. Mast is deviated at few degrees in front to hole centerline at work position. Guy wire ropes stabilize mast and are part of its design They are loaded from part of hook load during drilling operation and meeting to recommendation relative to tension forces values of guy wire ropes is very important in safety assurance. Drilling rig operation manual and proper standards include guy wire rope arrangement, tension forces and anchor capacities. Impact of tension forces in guy wire ropes on mast framework displacement has made visible by mast load tests carried out.
Modeling of two phase fluid filtration in reservoir with high permeability collector
(2009) Assilbekov, B. K.; Žapbasbaev, Uzak K.; Zolotuhin, Anatolij Borisovič
Bottom water flow in the layer with high permeability collector created by the radial drilling technology is considered. Dynamic of bottom water filtration to high permeability collector depending on properties of layer and layer fluid are investigated. Elaboration of mathematical model of fluid filtration in reservoir with high-permeability collector and calculations presents practical meaning for definition of radial drilling efficiency and estimation of flow rate to high permeability collector. Filtration of fluid in reservoir could be described with a model of cracked-porous medium by representing collector with high permeability as a crack. However for this model it is necessary to solve system of filtration equations in crack and porous block with satisfaction of conjugate condition on medium's division boundary. Problem formulation and solution is complicated for this model in case of two phase fluid filtration. Approach based on conception of interpenetrating continuums is simpler. In this case two phase fluid filtration in porous block with high permeability collector is described from a uniform position. Some numerical results of proposed generalized model of two phase fluid filtration from low permeability block to high permeability horizontal collector are implemented. Influence of reservoir anisotropy rate on well's waterbearing, bottom water breaking time and dynamic of water-oil surface development in oil saturated layer are studied.
Problemy konstrukcji i eksploatacji sprzętu wiertniczego do wierceń małośrednicowych
(2009) Bednarz, Stanisław; Artymiuk, Jan; Lizończyk, Wiesław
Slimhole drilling technology creates many challenges in design development. Different complexion of the matter depends on variety of drilling rigs and equipment use environment. Requirement of optimum design application is due to limited space conditions of drill bits and rods work. Material and manufacturing process selection comes into prominence on account of this. Safety management during operation of very complex systems controlled by operator is important issue.