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    Wyświetlanie 1-5 z 5
    Tytuł:
    Enhanced natural gas recovery from low-permeable reservoirs
    Autorzy:
    Kondrat, O. R.
    Hedzyk, N. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/299129.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    low-permeable reservoirs
    desorption
    gas recovery factor
    Opis:
    This paper presents the analysis of challenges concerning development of natural gas fields with low- -permeable reservoirs and experimental results of conducted laboratory researches, which provide the opportunity to establish regularities of adsorption-desorption processes in tight sands and develop technologies that enable increasing gas recovery factor from low-permeable reservoirs. For this purpose, a series of laboratory experiments were carried out on the sand packed models of layers with different permeability (from 9.7 to 93 mD) using methane, nitrogen and carbon dioxide. The pressure in the experiments varied from 1 to 10 MPa, temperature – 22–60 degrees of Celsius. These studies revealed the influence of pressure, temperature, reservoir permeability and non-hydrocarbon gases injection rate on the course of adsorption-desorption processes and their impact on the gas recovery factor. The obtained results of conducted experiments show high efficiency of non-hydrocarbon gases injection to enhance gas recovery and feasibility of their application in the natural gas field with low-permeable reservoirs.
    Źródło:
    AGH Drilling, Oil, Gas; 2016, 33, 2; 323-339
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimizing recovery factor in multilayers mature gas field, based on decline curve analysis methodology
    Autorzy:
    Stefanescu, D. P.
    Iturbe, Y.
    Falk, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/299016.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    mature gas fields
    Laslau Mare field
    recovery factor
    Opis:
    Generally, the mature fields have a good portion of the remaining reserves still trapped due to inefficient drainage, pressure decline, inerease in water cut, sand production and aging of the existing system. This paper addresses a methodology applied on the historical produetion behavior to identify techniques and initiatives to optimize the recovery factor based on redevelopment plans in a mature field. For Laslau Mare field in particular, there have been identified and implemented opportunities such as: infill drilling, work over optimization, dynamie underbalance perforation (DUP), acidizing, kick off with N2, propellant stimulation, snubbing, soaping, sand management, Wavefront Technology stimulation and wellhead and/or group compressor installation.
    Źródło:
    AGH Drilling, Oil, Gas; 2014, 31, 2; 367-393
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analyzing and forecasting the performance of water drive gas reservoirs
    Autorzy:
    Lupu, Diana-Andreea
    Ştefănescu, Dan-Paul
    Foidaş, Ion
    Powiązania:
    https://bibliotekanauki.pl/articles/298653.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas reservoirs
    recovery factor
    water drive mechanism
    Fetkovich aquifer model
    performance prediction
    Opis:
    The manner of estimating water drive gas reservoir recovery can vary considerably. Several mathematical models have been developed for estimating water influx in petroleum industry, but the current paper will address the application of Fetkovich aquifer model to predict the gas reservoir performance considering the pressure changes that gradually occur within the aquifer and between the aquifer and reservoir. The applicability of this model has proven to be extremely useful in estimation of initial gas resources, aquifer volume and its parameters, confirming the producing mechanism but also forecasting the production performance of the gas reservoir. The authors will highlight through some case studies, the importance of the water influx analysis and prediction, in particular for natural gas reservoirs, which subsequently allows for adequate planning in optimizing the reserves’ recovery.
    Źródło:
    AGH Drilling, Oil, Gas; 2019, 36, 1; 143-159
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of Smart Field concept in mature gas field rehabilitation
    Autorzy:
    Tataru, A.
    Stefanescu, D. P.
    Simescu, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/298749.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Smart Fields
    real-time monitoring
    production optimisation
    final recovery factor
    mature gas reservoir
    Opis:
    Since the concept of Smart Field emerged, the operating companies work hard to enable such capabilities through various technology developments, both in the field and the office. Smart Fields help to manage, deliver, optimize and develop short and long term decisions and plans. The technology of “Smart Fields” is based on the measurement of process parameters in the reservoir and on the surface [4]. Implementing Smart Gas Field help us to maximize the value of production and increase profitability, while reducing operating costs and the use of industrial services. The integrated and automated data from sensors, simulated models and controllers provide reliable diagnostic tests, enable measurable improvements and implement a favorable environment to plan and schedule phases of production [5]. The main challenge for Romgaz was to combine and integrate older system into newer one. The problem was the installed old technology equipment, which was difficult to replace by the new one. During the last years in the most majors fields has begun a process of rehabilitation. To extend the mature gas reservoir life we redeveloped and optimized the fields, improving productivity and reservoir performance. To aim these goals, today, we need monitoring / surveillance programs for optimizing the production . It is important to measure the parameters of process conditions as accurately as possible.
    Źródło:
    AGH Drilling, Oil, Gas; 2016, 33, 1; 183-194
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Operations for improving the gas flow in the wellbore adjacent zone
    Autorzy:
    Sutoiu, F.
    Foidas, I.
    Avramescu, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/298643.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    natural gas resources
    well operations
    stimulation technologies
    perforations
    re-perforations
    acidizing
    nitrogen injection
    polymer injection
    skin factor
    recovery factor
    Opis:
    During the whole period of a natural gas reservoir exploitation, from the start of production until the total reservoir energy depletion, may apear some phenomena which by their nature can affect the natural gas flow from the layer into the well. The flow resistance greeted by gas in the adjacent borehole may have multiple causes. In the majority of cases, geological elements are those which definitive influence the behaviour in exploitation of those reservoirs, so the existence of some traps due to the continuity and discontinuity character of the porous-permeable medium or to some reservoir parameters with low values, drasticaly reduces the posibility of extraction of a bigger volume of geological gas resource. Also the exploitation performances of gas reservoirs, through different wells, are major affected because of the skin factor. This produces an increased flow resistance in the adjacent zone of the borehole which is a plus to the resistance caused by the hydrodynamic imperfection to the mode and open degree of the productive layer. During the maturity stage of natural gas reservoirs, a special attention is granted to prevention and control of this unwanted effects which may affect natural gas flow from the reservoir into the well, through different operations. The stimulation of these productive layers through different operations aiming the reduction of geological nature constraints, thereby become a complex approach having the finality the increasing of exploitation performances itself. In Romgaz were tested and are used a series of stimulation technologies of the productive layers. From there historic we conclude that perforations or re-perforations using deep penetration tools, acidizing and nitrogen injection are applied with success to the productive wells. Regarding the increasing of the recovery factor for wells with high water income or for wells with mixed flow regime or with water drive regime, were successfully tested the polymer injection technology that helps to maintaining or optimising the productive wells.
    Źródło:
    AGH Drilling, Oil, Gas; 2016, 33, 2; 531-547
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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