Drill Stem Test

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Kenneth C. Kirkby - One of the best experts on this subject based on the ideXlab platform.

  • The Keg River/Winnipegosis petroleum syStem - Source to trap part I
    AAPG Bulletin, 1991
    Co-Authors: S.w. Tinker, Kenneth C. Kirkby
    Abstract:

    The Keg River/Winnipegosis Formation is a heterogeneous hydrocarbon syStem composed of three oil families based upon gas chromatography of extracts from nine potential source rocks, six oil stained cores, and oils from fourteen Keg River/Winnipegosis fields. Family 1 - The 'pinnacle' play oils (North Alberta, South Saskatchewan, and North Dakota), together with Virago field (Southeast Alberta), comprise a locally sourced (upper Keg River/lower Muskeg/Ratner) family that exhibits a broad maturity range heavily dependent upon present burial depths and geothermal gradients. Family 2 - Oils from Utikima Lake, Peerless, Panny, and Senex fields in Alberta are a homogeneous, migrated oil sourced from the Duvernay Formation (upper Devonian). Family 3 - Oils from Temple field (North Dakota) and oil-stained carbonate cores of west-central Saskatchewan are of unknown source (possibly mixed Ordovician and Devonian or Mississippian). Long-distance (> 200 mi or > 320 km) oil migration routes through the thermally immature Keg River carbonates of Northeast Alberta were tracked by epi-fluorescence (E-F) study of 200 thin sections. Drill Stem Test (DST) recoveries and E-F oil shows demonstrate that oil migration extended northeast of the Senex area to the Keg River shelf margin. Oil migration along the shelf margin was southeast, oblique to regionalmore » structural dip. E-F shows in shelf margin strata continue southeast to the Cold Lake Weapon Range where a pre-Cretaceous dissolution event removed the overlying Muskeg halite seal. Porous carbonates of the Keg River shelf margin were possibly a migration route for oils sourcing the Cretaceous Athabasca oil sands overlying this dissolution area.« less

S.w. Tinker - One of the best experts on this subject based on the ideXlab platform.

  • The Keg River/Winnipegosis petroleum syStem - Source to trap part I
    AAPG Bulletin, 1991
    Co-Authors: S.w. Tinker, Kenneth C. Kirkby
    Abstract:

    The Keg River/Winnipegosis Formation is a heterogeneous hydrocarbon syStem composed of three oil families based upon gas chromatography of extracts from nine potential source rocks, six oil stained cores, and oils from fourteen Keg River/Winnipegosis fields. Family 1 - The 'pinnacle' play oils (North Alberta, South Saskatchewan, and North Dakota), together with Virago field (Southeast Alberta), comprise a locally sourced (upper Keg River/lower Muskeg/Ratner) family that exhibits a broad maturity range heavily dependent upon present burial depths and geothermal gradients. Family 2 - Oils from Utikima Lake, Peerless, Panny, and Senex fields in Alberta are a homogeneous, migrated oil sourced from the Duvernay Formation (upper Devonian). Family 3 - Oils from Temple field (North Dakota) and oil-stained carbonate cores of west-central Saskatchewan are of unknown source (possibly mixed Ordovician and Devonian or Mississippian). Long-distance (> 200 mi or > 320 km) oil migration routes through the thermally immature Keg River carbonates of Northeast Alberta were tracked by epi-fluorescence (E-F) study of 200 thin sections. Drill Stem Test (DST) recoveries and E-F oil shows demonstrate that oil migration extended northeast of the Senex area to the Keg River shelf margin. Oil migration along the shelf margin was southeast, oblique to regionalmore » structural dip. E-F shows in shelf margin strata continue southeast to the Cold Lake Weapon Range where a pre-Cretaceous dissolution event removed the overlying Muskeg halite seal. Porous carbonates of the Keg River shelf margin were possibly a migration route for oils sourcing the Cretaceous Athabasca oil sands overlying this dissolution area.« less

John W. Lloyd - One of the best experts on this subject based on the ideXlab platform.

  • A multi-layered radial flow model interpretation of Drill Stem Test data
    Journal of Hydrology, 1992
    Co-Authors: John W. Lloyd
    Abstract:

    Five sets of Drill Stem Test data from adjacent zones in a borehole are analysed for hydraulic conductivities using the traditional Horner method, a single-layer radial flow model and a multi-layer radial flow model. An optimised interpretation has been used in the last model. The results show that head responses resulting from Tests are important in zones juxtaposed to the Test zone and must be accounted for in hydraulic conductivity determinations. The most suitable method is shown to be the optimised multi-layer radial model.

Wladyslaw Altermann - One of the best experts on this subject based on the ideXlab platform.

  • Calculation of water saturation in low resistivity gas reservoirs and pay-zones of the Cretaceous Grudja Formation, onshore Mozambique basin
    Marine and Petroleum Geology, 2015
    Co-Authors: Vincent Mashaba, Wladyslaw Altermann
    Abstract:

    Abstract The water saturation of a hydrocarbon bearing formation is usually calculated via the conductivity of the formation water, as defined by Archie, 1942. However, in some formations such conventionally calculated water saturation contradicts values calculated from the Nuclear Magnetic Resonance (NMR) tool and from the Drill Stem Test (DST). Here we discuss such a case of low resistivity pay zones in the J- and K-Reservoirs, of the Lower Grudja Formation of Maastrichtian age, onshore Mozambique basin, in which conventional log analysis contradicts water saturation calculated from the NMR and by the Drill Stem Test. For both, the J-Reservoir and K-Reservoir, the water saturation (Sw) was calculated using the Archie equation and the Simandoux equation, that accounts for clay bound water but not for silt, and the results were compared to NMR-calculated water saturation. A new algorithm that improves the accuracy of water saturation calculation was introduced. This new algorithm takes into account the clay- and silt-bound water within the overall reservoir resistivity. It is demonstrated that the clay- and silt-bound water must be included in water saturation calculations, where the formations are rich in silt and clay. The Simandoux equation and the new algorithm yield significant improvement in water saturation results for the J- and K-Reservoirs, when compared to water saturation calculated using the Archie's equation.

East Simpson - One of the best experts on this subject based on the ideXlab platform.

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