Unconformities Within a Progradational Estuarine System: The Upper Santonian Virgelle Member, Milk River Formation, Writing-on-Stone Provincial Park, Alberta, Canada

Meyer, Rudi; Krause, Federico F.; Braman, Dennis R.

doi:10.2110/pec.98.61.0129

Cited by 21 publications

(12 citation statements)

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“…Milk River outcrops are found at Writing on Stone Provincial Park (WOSPP) in Alberta, Canada (Fig. 3); they have been described in detail in previous studies (Meyer 1998;Meyer et al 1998;Meyer and Krause 2006;Alfarhan et al 2009). Outcrops of the Milk River formation (Cretaceous sandstone) were scanned using ground LiDAR (light detection and ranging) technology in 2008.…”

Section: Milk River Outcrops: Reasonable Analogues For the Doig Formamentioning

confidence: 70%

Reservoir Characterization and Flow Simulation of a Low-Permeability Gas Reservoir: An Integrated Approach for Modelling the Tommy Lakes Gas Field

Deng

Aguilera

Alfarhan³

et al. 2011

Journal of Canadian Petroleum Technology

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Summary The Tommy Lakes field is located in northeastern British Columbia, Canada, and is one of the largest Middle Triassic gas pools within the western Canada sedimentary basin (WCSB). The major gas-production formation (Halfway/Doig reservoirs) at the Tommy Lakes field corresponds to shoreface sands with permeabilities ranging between 0.1 and 3 md, and porosities of 3 to12%. For the purpose of production optimization and field development, a full-field reservoir model was developed with the integration of advanced reservoir characterization, hydraulic-fracture modelling, and history-matching techniques. This study presents an integrated workflow for modelling the low-permeability Doig gas reservoir. A stochastic geostatistical reservoir model was developed on the basis of concepts emanating from an outcrop analogue analyzed with terrestrial light detection and ranging (LiDAR) technology and 60 wells that represent the fundamental rock characteristics, structure, facies? proportions, and petrophysical properties of the Doig anomalously thick sandstone bodies (ATSBs). Structural tops were interpreted from well logs and permeability/porosity relationships established from quantitative log analysis and core/log calibration. Facies were identified in cored intervals and were further grouped into four lithofacies. An artificial neural network (ANN) was used for training the logs of key wells [gamma ray (GR), neutron porosity (NPHI), and bulk density (RHOB)] and populating the facies distribution of uncored wells. Facies-based log-derived porosity, permeability, shale volume, and water saturation were assigned to gridblocks using sequential Gaussian simulation (SGS). Finally, the Monte Carlo simulation approach was used to rank the key variables affecting original gas in place (OGIP) in the uncertainty and optimization process. Flow-based techniques were used for upscaling reservoir properties into the coarse simulation grid. The full-field simulation model was calibrated with buildup data and hydraulic-fracture modelling of single wells. Production of the Doig channel from commingled wells was allocated systematically in order to achieve a good match of the gas-production history and bottomhole pressures. Sensitivity analysis of fracture half-length and its impact on ultimate gas recovery was investigated. This concluded with an integrated development strategy. It is concluded that integration of multiple domains leads to a valid full-field reservoir model, which is critical in developing an integrated strategy, predicting reservoir performance, and optimizing gas production.

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Section: Milk River Outcrops: Reasonable Analogues For the Doig Formamentioning

confidence: 70%

Reservoir Characterization and Flow Simulation of a Low-Permeability Gas Reservoir: An Integrated Approach for Modelling the Tommy Lakes Gas Field

Deng

Aguilera

Alfarhan³

et al. 2011

Journal of Canadian Petroleum Technology

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“…According to the lack of carbonate precipitation in porosities (Table 2), it appears that the primary reservoir features may not be affected much due to weak diagenesis after sandstone deposition. Thus, the channel sandstones here may not be interpreted as tide-dominated (estuarine) channels due to the lack of interbedded, tidally induced structures, such as bipolar paleocurrents, shaly laminae, mud drapes, tidal bundling, or mud couplets within the sets (e.g., Meyer et al, 1998).…”

Section: Article In Pressmentioning

confidence: 99%

Porosity–permeability and textural heterogeneity of reservoir sandstones from the Lower Cretaceous Putaohua Member Of Yaojia Formation, Weixing Oilfield, Songliao Basin, Northeast China

Sun

Shu

Zeng

et al. 2007

Marine and Petroleum Geology

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“…Although distinct herringbone cross-bedding is absent, the trough cross-stratification shows bi-directional palaeocurrents, dominated by SE (flood) currents, and secondary NW (ebb) ones. Various diagnostic structures document the influence of tidal currents (Meyer et al 1998;Myrow 1998), such as clay laminae (similar to present-day clay drapes occurring in tidal still-stand deposits), reactivation surfaces shown by cross-bedded sets (resulting from time-velocity asymmetry of tidal currents) and bi-directional foreset units. As a result, the reported thickening-upwards sequences may represent progradational trends of bars related to a tidal channel system, in which siliciclastic grains were primarily related to reworking of epiclastic material.…”

Section: Tidally Influenced Epiclastic Stratamentioning

confidence: 99%

Botoman (Lower Cambrian) turbid- and clear-water reefs and associated environments from the High Atlas, Morocco

Álvaro

Clausen

2007

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Exposures of the Botoman (Lower Cambrian), Lemdad and Issafen formations on the Lemdad syncline, southern High Atlas, provide an excellent example of the interactions between tectonic events, magmatic activity and carbonate productivity. The major factors that controlled the nucleation of carbonate factories on the Botoman High Atlas platform were: (i) synsedimentary tectonism, as normal faulting resulted in tilting of fault blocks causing irregular topographies and subsequent sharp erosion; (ii) volcanism, because pyroclastic influx smothered carbonate factories except in distal areas of the platform or during quiescent episodes of volcanic activity; and (iii) the influence of successive shoaling parasequences. The Botoman reefs exhibit a wide range of external morphologies, including tabular (biostromes) and domal (bioherms and patches) boundstones, which do not exceed 3.5 m of thickness. Although archaeocyathan-microbial reefs only developed under clearwater conditions, microbial reefs grew also under turbid-water conditions. Domal and digitate stromatoids, Girvanella crusts, Epiphyton bushes and thromboid-stromatoid intergrowths document the ability of some microbial communities to develop heterotrophic strategies when submitted to a moderate terrigenous input. Turbidity was a major ecological factor that constrained development of filter/suspension-feeder and phototrophic organisms, but not necessarily of benthic non-phototrophic microbial communities.

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Unconformities Within a Progradational Estuarine System: The Upper Santonian Virgelle Member, Milk River Formation, Writing-on-Stone Provincial Park, Alberta, Canada

Cited by 21 publications

References 0 publications

Reservoir Characterization and Flow Simulation of a Low-Permeability Gas Reservoir: An Integrated Approach for Modelling the Tommy Lakes Gas Field

Reservoir Characterization and Flow Simulation of a Low-Permeability Gas Reservoir: An Integrated Approach for Modelling the Tommy Lakes Gas Field

Porosity–permeability and textural heterogeneity of reservoir sandstones from the Lower Cretaceous Putaohua Member Of Yaojia Formation, Weixing Oilfield, Songliao Basin, Northeast China

Botoman (Lower Cambrian) turbid- and clear-water reefs and associated environments from the High Atlas, Morocco

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