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    Wyświetlanie 1-2 z 2
    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:
    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
      Wyświetlanie 1-2 z 2

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