3D seismic attributes and well-log facies analysis for prospect identification and evaluation: Interpreted palaeoshoreline implications, Weirman Field, Kansas, USA

Raef, Abdelmoneam; Mattern, Frank; Philip, Charlotte Conwell; Totten, Matthew W.

doi:10.1016/j.petrol.2015.04.028

Cited by 35 publications

(6 citation statements)

References 20 publications

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“…Physical attributes are closely linked with lithology, change in depositional environments and pore fluid properties. These attributes are commonly used to predict the reservoir properties of the targeted interval (Bodine 1984(Bodine , 1986Taner 2001;Løseth et al 2009;Raef et al 2015). With the advent of digital recording the quality of seismic amplitude data has been tremendously improved (Chopra and Marfurt 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, to improve the reservoir analysis, in addition to amplitude attributes other seismic attributes such as sweetness, average instantaneous phase, average instantaneous frequency and spectral frequency etc. are in practice (Horkowitz and Davis 1996;Taner 2001;Rana et al 2006;Hart 2008;Ye et al 2008;Raef et al 2015). Sweetness is commonly used to identify the sand, shale, sandstones and channel sand and also helpful to check the lateral as well as vertical continuity of the targeted interval (Hart 2008;Ahmad and Rowell 2012;Wang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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An application of seismic attributes analysis for mapping of gas bearing sand zones in the sawan gas field, Pakistan

et al. 2015

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Sandstone intervals of the Lower Goru Formation of the Cretaceous age are proven reservoir intervals in the middle Indus Basin, Pakistan. However, based on seismic data interpretation, it is difficult to differentiate payable gas sand from non-payable gas sand. Various types of post-stacks seismic attributes are extracted and analyzed to differentiate payable gas sand from non-payable. The analysis reveals that average instantaneous frequency, peak spectral frequency, average instantaneous phase and sweetness seem to be more effective attributes along with energy half time. Sweetness attribute map shows two sweet spot below the targeted window which indicate to the presence of gas play. Statistical analysis is also carried out to find the associations between seismic attributes and thickness of gas layer values. Cross plots of these attributes were quantified through regression analysis. A good correlation with regression coefficient (R 2 ) [ 0.78 is found between seismic attributes and gas layer thickness except average instantaneous phase attribute, which lays the foundation for predicting the thickness of gas reservoir.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An application of seismic attributes analysis for mapping of gas bearing sand zones in the sawan gas field, Pakistan

et al. 2015

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“…Compound attribute-based analytical approaches, such as those provided via quantitative-based visualization, complement the robust amplitude lengthwise of the basin floor fan bed event, which has established its applicability towards recognizing upcoming predictions. The consequences of the immediate features elect that those seismic-based features examined can remain performed aimed at the description of assembly and stratigraphy [13,[33][34][35]. Preceding interpretations display approximately the same class of structural and petrophysical examination [22].…”

Section: Comparative Analysis Of Geophysical Toolsmentioning

confidence: 99%

Static Reservoir Simulations and Seismic Attributes Application to Image the Miocene Deep-Water Reservoirs in Southeast Asia

Naseer

Khalid

Naseem

et al. 2023

Water

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Globally, deep-water reservoir systems are comprised of a variety of traps. Lateral and downdip trapping features include sand pinch-outs, truncation against salt or shale diapirs, and monoclinal dip or faulting with any combination of trapping designs; the potential for massive hydrocarbon accumulations exists, representing significant exploration prospects across the planet. However, deep-water turbidites and submarine fans are two different types of traps, which are developed along the upslope and the basin floor fans. Among these two traps, the basin floor fans are the most prolific traps as they are not influenced by sea-level rise, which distorts the seismic signals, and hence provides ambiguous seismic signatures to predict them as hydrocarbon-bearing zones for future explorations. Therefore, the deep-water channel-levee sand systems and basin floor fans sandstone define economically viable stratigraphic plays. The subsurface variability is significant, and hence, characterizing the thick (porous) channelized-basin floor fans reservoir is a challenge for the exploitation of hydrocarbons. This study aims to develop seismic-based attributes and wedge modeling tools to accurately resolve and characterize the porous and gas-bearing reservoirs using high-resolution seismic-based profiles, in SW Pakistan. The reflection strength slices better delineate the geomorphology of sand-filled channelized-basin floor fans as compared to the instant frequency magnitudes. This stratigraphic prospect has an area of 1180 km2. The sweetness magnitudes predict the thickness of channelized-basin floor fans as 33 m, faults, and porous lithofacies that complete a vital petroleum system. The wedge modeling also acts as a direct hydrocarbon indicator (DHI) and, hence, should be incorporated into conventional stratigraphic exploration schemes for de-risking stratigraphic prospects. The wedge model resolves a 26-m thick hydrocarbon-bearing channelized-basin floor fans lens with a lateral distribution of ~64 km. Therefore, this wedge model provides ~75% correlation of the thickness of the LSL as measured by sweetness magnitudes. The thickness of shale that serves as the top seal is 930 m, the lateral mud-filled canyons are 1190 m, and the thick bottom seal is ~10 m, which provides evidence for the presence of a vibrant petroleum play. Hence, their reveals bright opportunities to exploit the economically vibrant stratigraphic scheme inside the OIB and other similar global depositional systems.

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“…Resistivity curves were upscaled and interpolated by means of a moving averages model with a fourth-power inverse distance algorithm. The hydrogeophysical resistivity model was used to correlate hydrofacies based on horizons and surfaces, as commonly done in the oil industry [73]. A square 800 × 800 m mesh was used to devise the hydrogeological units.…”

Section: Well Yield and Aquifer Parametersmentioning

confidence: 99%

Water Supply Source Evaluation in Unmanaged Aquifer Recharge Zones: The Mezquital Valley (Mexico) Case Study

Hernández-Espriú

Arango-Galván

Reyes-Pimentel³

et al. 2016

Water

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Abstract:The Mezquital Valley (MV) hosts the largest unmanaged aquifer recharge scheme in the world. The metropolitan area of Mexico City discharges~60 m 3 /s of raw wastewater into the valley, a substantial share of which infiltrates into the regional aquifer. In this work, we aim to develop a comprehensive approach, adapted from oil and gas reservoir modeling frameworks, to assess water supply sources located downgradient from unmanaged aquifer recharge zones. The methodology is demonstrated through its application to the Mezquital Valley region. Geological, geoelectrical, petrophysical and hydraulic information is combined into a 3D subsurface model and used to evaluate downgradient supply sources. Although hydrogeochemical variables are yet to be assessed, outcomes suggest that the newly-found groundwater sources may provide a long-term solution for water supply. Piezometric analyses based on 25-year records suggest that the MV is close to steady-state conditions. Thus, unmanaged recharge seems to have been regulating the groundwater balance for the last decades. The transition from unmanaged to managed recharge is expected to provide benefits to the MV inhabitants. It will also be likely to generate new uncertainties in relation to aquifer dynamics and downgradient systems.

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3D seismic attributes and well-log facies analysis for prospect identification and evaluation: Interpreted palaeoshoreline implications, Weirman Field, Kansas, USA

Cited by 35 publications

References 20 publications

An application of seismic attributes analysis for mapping of gas bearing sand zones in the sawan gas field, Pakistan

An application of seismic attributes analysis for mapping of gas bearing sand zones in the sawan gas field, Pakistan

Static Reservoir Simulations and Seismic Attributes Application to Image the Miocene Deep-Water Reservoirs in Southeast Asia

Water Supply Source Evaluation in Unmanaged Aquifer Recharge Zones: The Mezquital Valley (Mexico) Case Study

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