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    Wyświetlanie 1-5 z 5
    Tytuł:
    Depositional environment, geochemistry and diagenetic control of the reservoir quality of the Oligo-Miocene Asmari Formation, a carbonate platform in SW Iran
    Autorzy:
    Omidpour, Armin
    Moussavi-Harami, Reza
    Loon van, Antonius Johannes
    Mahboubi, Asadollah
    Rahimpour-Bonab, Hossain
    Powiązania:
    https://bibliotekanauki.pl/articles/2059594.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Asmari Formation
    Shadegan Oil Field
    reservoir geology
    diagenesis
    oil exploration
    Opis:
    The Oligo-Miocene Asmari Formation in SW Iran represents sedimentation on a carbonate platform. Thin-section analysis allowed distinguishing 26 microfacies, which can be grouped into twelve microfacies associations that represent four main depositional environments: open-marine, outer-ramp, middle-ramp and inner-ramp settings. The carbonates have undergone a complex diagenetic history, from penecontemporaneous shallow-marine consolidation to deep-burial diagenesis. The most important processes that affected the carbonates are dolomitization (in different stages), cementation (by anhydrite and calcite), dissolution (fabric-selective and fabric-destructive), fracturing, stylolitization and neomorphism. Minor diagenetic processes that modified the sediments are pyritization, silicification, glauconitization, micritization and bioturbation. Diagenetic processes such as dolomitization, dissolution and fracturing improved the reservoir quality, whereas cementation and compaction have reduced the reservoir quality of the Asmari Formation. Whole-rock oxygen and carbon isotope analyses of limestone samples show that the isotopic composition of the carbonates was hardly affected by diagenesis and that the carbonates remained roughly in isotopic equilibrium with the Paleogene seawater. Some samples have, however, been affected significantly by diagenesis during deep burial in a closed to semi-closed diagenetic system.
    Źródło:
    Geological Quarterly; 2021, 65, 2; 65: 27
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integrating new data acquisition to develop tight gas reservoir of a mature field through multilayer fracture stimulations
    Autorzy:
    Stefanescu, D. P.
    Falk, I.
    Iturbe, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/299062.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    tight gas reservoir
    mature field
    Mechanical Earth Model
    fracture multistage simulation
    fracture LGR model
    special logging as formation microimager
    pressure express
    dipole sonic and PLT
    Opis:
    Laslau Mare field is situated in the central part of the Transylvania Basin, in Romania. This is a mature gas field, composed by multi-layered sandstone reservoirs, grouped in six production packages. The permeability of the reservoirs is decreasing with depth, resulting in tight gas formations in the two deepest reservoirs. One of these tight reservoirs presents a high interest for reserves development in order to accelerate the recovery factor of the field. Compared to the other production packages, which have higher recovery factors (~80%), this package has a current RF of only 65%, with more attractive remaining recoverable gas volumes. The reservoir model was built based on 3D seismic and old log data. After history matching and simulation, a remaining gas in place map was created, in order to visualize the areas of interest for future drilling or workover operations. One new infill well was drilled in 2014, in an area with higher remaining gas in place. Special logging and side- wall coring were executed in this well, in order to get a better characterization of the reservoir properties and to build a geomechanical model for hydraulic frac design. The subject package still has a decent reservoir pressure which keeps an acceptable value of the productivity index of the producer wells. The reservoir pressure recorded after the drilling helped to update the static reservoir pressure in the area; the new points were incorporated in the dynamic model in order to get morę control in the pressure history match. New population of static properties such as: porosity, net to gross and permeability have been included in the dynamic model to generate the forecast production profile for the infill well and neighbor wells. The infill is a dual completion well which means the deeper zone produces through the tubing and the shallower zone through the annulus being separated by a packer. These two zones have two different dynamic models. The production forecasts has been done also based on decline curve analysis DCA, using historical production of the neighbor wells as a reference and the decline rate of the area, in each reservoir. In that order of ideas the infill has two gas production forecasts coming from each methodology, to compare with the real gas production, which allows us evaluating the results in the well. Based on the new data, the frac stages were defined and simulated in the deeper tight reservoir, in order to select the best target layers. The initial plan was to do multistage frac stimulation, but the idea was discarded after evaluating the operational feasibility. Ten frac stages have been evaluated creating a local refmement grid around the well and designing a fracture simulation scenario. The results pointed out one stage as being the best in terms of cumulative production and it was chosen as the only finał target for frac. A PLT log was run in the infill well for the purpose of identifying the risk of water layers and the production contribution of the perforation intervals. This was matched very well with the simulation results. The results and experience gained from this new well are helping with the further planning of the production development strategy of this production package in order to inerease the final recovery factor.
    Źródło:
    AGH Drilling, Oil, Gas; 2015, 32, 1; 153-173
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laboratory tests for the application of nitrate-based inhibitor against H2S formation
    Autorzy:
    Turkiewicz, A.
    Falkowicz, S.
    Kapusta, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/298657.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    hydrogen sulfide
    nitrate-based treatment
    permeability
    reservoir rock
    formation water
    Opis:
    This article discusses two series of the efficiency tests of nitrate-based inhibitor in the contaminated media. Nitrate-based treatments are the new methods of biogenic hydrogen sulfide elimination in the reservoir conditions. The first series concerned the tests of the contaminated medium, i.e. the mixture of formation water and sulfate-reducing bacteria suspension. The second series included the results of tests on natural formation water (without additional microbiological contamination). Moreover, a series of tests was performed in order to evaluate the influence of the tested material on reservoir rock samples represented by sandstone. The results of tests were presented in the form of tables and the formulated conclusions may be in the future useful for the oil and gas industry.
    Źródło:
    AGH Drilling, Oil, Gas; 2017, 34, 1; 231-241
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality Improvement of Oil-Contaminated Wastewater, Meant for Injection into Formation, Using Two-Stage Treatment Technology
    Autorzy:
    Golubev, I.
    Karpova, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/123927.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    oil
    reservoir colmatation
    oil-contaminated wastewater
    formation contamination
    water conditioning
    magnetic treatment
    fractured rocks
    disperse rocks
    Opis:
    The paper deals with water conditioning issues in oil-field development using water-flooding. It is common knowledge that injected water contains oil residues and mechanical impurities, which affect permeability of geological horizon. It has been shown that these water impurities could intensify rock colmatation up to a full clogging of pores and fractures. Hence, issues of improving quality of injected water, aimed to ensure enhancement of reservoir properties, have been studied from a variety of new angles. There are given results of conducted test experiments as well as detailed description of elaborated equipment design. It has been established that two-stage treatment technology proposed in the paper, by making use of magnetic treatment device and sewage tank with liquid hydrophobic layer, will allow to considerably improve quality of injected water. Suggested water treatment unit appears to be highly applicable, providing a maximum effect at a minimum material cost.
    Źródło:
    Journal of Ecological Engineering; 2017, 18, 3; 48-52
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Safety and effectiveness of carbon dioxide storage in water-bearing horizons of the Upper Silesian Coal Basin region
    Bezpieczeństwo i efektywność składowania dwutlenku węgla w poziomach wodonośnych rejonu Górnośląskiego Zagłębia Węglowego
    Autorzy:
    Solik-Heliasz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/216596.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
    Tematy:
    składowisko CO2
    strefa ochronna
    efektywność zatłaczania CO2
    szczelinowanie utworów
    utwory zbiornikowe
    składowiska w GZW
    CO2 storage sites
    protective zone
    CO2 injection effectiveness
    fracturing
    reservoir formation
    storage sites
    Upper Silesian Coal Basin
    Opis:
    The results of investigations in the field of CO2 storage in water-bearing horizons in the area of the Upper Silesian Coal Basin were presented. It has been stated that the CO2 injection process will appear in the area of the storage site and beyond its boundaries. The determination of protective zones for underground CO2 storage and other structural elements, e.g. big tectonic zones, was proposed. These zones will constitute a safety buffer between the underground storage site and utilitarian undertakings conducted in its neighbourhood. In the work the proposal of CO2 injection intensification through controlled fracturing of formations of the future storage site was presented. This action should increase the CO2 injection effectiveness, especially in rock series characterised by average values of reservoir parameters.
    Przedstawiono wyniki badań w zakresie składowania CO2 w poziomach wodonośnych na obszarze GZW. Stwierdzono, że proces iniekcji CO2 zaznaczy się w obszarze składowiska oraz poza jego granicami. Zaproponowano wyznaczanie stref ochronnych dla podziemnego składowania CO2 i innych elementów strukturalnych, np. dużych stref tektonicznych. Strefy te będą stanowiły bufor bezpieczeństwa między podziemnym składowiskiem i przedsięwzięciami utylitarnymi prowadzonymi w jego sąsiedztwie. W pracy przedstawiono propozycję intensyfikacji zatłaczania CO2 poprzez kontrolowane szczelinowanie utworów przyszłego składowiska. Zabieg powinien zwiększyć efektywność zatłaczania CO2 zwłaszcza w seriach skalnych cechujących się przeciętnymi wartościami parametrów zbiornikowych.
    Źródło:
    Gospodarka Surowcami Mineralnymi; 2011, 27, 3; 141-149
    0860-0953
    Pojawia się w:
    Gospodarka Surowcami Mineralnymi
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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