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    Tytuł:
    Podstawy metodyki poszukiwań, rozpoznawania i dokumentowania zasobów złóż w odniesieniu do złóż gazu ziemnego w łupkach gazonooenych
    Backgrounds of prospecting, exploration and reporting resources and reserves of shale gas deposits
    Autorzy:
    Nieć, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075159.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    shale gas deposits
    prospecting
    exploration
    resources
    reserves
    złoża gazu łupkowego
    zasoby
    rezerwy
    Opis:
    Gas in shales occurs as a constituent of rock and its resources can be estimated in a similar way as the metal content in ore deposit. The cutoff gas content in rock is the basic parameter defining deposit boundaries. It is proposed that the cutoffs in gas-bearing rocks are 2 m3 gas/t and 15-m deposit thickness. In case of lack of sufficient data, the deposit boundaries for resources estimation may be delineated in a defined distance from prospecting boreholes, supported by geophysical data, if possible. Discovered gas resources may be evaluated by volumetric methods. For reserve estimation, dynamic methods should be applied based on shale fracturing results. Following the stages of prospecting and exploration, decreasing uncertainty of the deposit resources/reserves evaluation may be expressed by D, C, B and A categories, or with the use of PRMS classification system.
    Źródło:
    Przegląd Geologiczny; 2014, 62, 8; 403--413
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oil and gas fields in the Carpathians and the Carpathian Foredeep
    Autorzy:
    Górka, A.
    Gliniak, P.
    Madej, K.
    Maksym, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2066022.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    gas fields
    oil fields
    Carpathian Foredeep
    Carpathians
    sub-miocene basement
    reserves
    activity in the South of Poland
    Opis:
    Southeastern Poland is one of the oldest petroleum provinces in the world. Although hydrocarbon production has been conducted in this region since the middle of 19th century, there is still a good potential for more discoveries. 9 billion cubic meters of high methane gas reserves reported in the years 2000-2006, when combined with the previously discovered gas fields, essentially satisfy gas demand for this area. Currently, Miocene deposit of the Carpathian Foredeep is the most prolific exploration target area with more than 100 discoveries of high methane gas. The total reserves of these fields are 138 billion cubic meters, and the cumulative production is more than 90 billion cubic meters of natural gas. Large gas fields in terms of area and reserves that have already been discovered are followed by present discoveries of fields with relatively smaller area, their reserves are up to 2 billion cubic meters. Current exploration efforts are focused on good understanding of the sub-miocene basement configuration as well as detecting of seismic anomalies directly related to natural gas accumulations. Another very important element of exploration strategy for Southern Poland is the Mesozoic and Paleozoic deposits of the Carpathian Foredeep. The most prospective for discovering of sizeable hydrocarbon fields are Cretaceous (Cenomanian) sandstones and Upper Jurassic carbonates, locally also Middle Jurassic sandstone as well as Lower Carboniferous and Devonian carbonates. So far 13 gas fields and 10 oil fields have been discovered in the Mesozoic and Paleozoic of the Carpathian Foredeep and the sub-Carpathian basement with booked reserves of 7.5 billion cubic meters of natural gas and 4.7 million tons of oil. The cumulative production amounts to 6.1 billion cubic meters of gas and 4.3 million tons of oil. Different exploration problems have been encountered in the Carpathians. Most of the fields which have been discovered in the Flysch Carpathians occur in shallow, steep, narrow, commonly thrusted and faulted folds. Oil and gas fields discovered so far in the Carpathians have small reserves. Additionally, discovered and booked reserves of existing oil and gas fields are depleted to a large extent. 17 gas fields and 67 oil fields have been discovered in the Carpathians. Booked reserves amount to 16.6 billion cubic meters of natural gas and 12.3 million tons of oil. Cumulative production has been 15.2 billion cubic meters of gas and 11.9 million tons of oil. To sum up, it should be emphasized that the bulk of gas reserves discovered, booked and developed recently in Southern Poland comes from the autochthonous Miocene deposits. This trend, which involves high methane gas, is expected to continue for the next few years. Potential oil discoveries can be attributed mainly to the flysch Carpathians and Paleozoic, but requires more research and further exploration on a larger scale.
    Źródło:
    Przegląd Geologiczny; 2007, 55, 12/1; 993-998
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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