Reservoir quality modeling of tight-gas sands in Wamsutter field: Integration of diagenesis, petroleum systems, and production data

Tobin, Rick C.; McClain, Tony; Lieber, Robert B.; Ozkan, Aysen; Banfield, Laura A.; Marchand, Ann M. E.; McRae, Lee E.

doi:10.1306/04211009140

Cited by 110 publications

(52 citation statements)

References 23 publications

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“…8l). The importance of grain coating chlorite in preserving porosity has been recognized in many studies (Bloch et al, 2002;Ehrenberg et al, 2009;Ajdukiewicz and Lander, 2010;Tobin et al, 2010;Taylor et al, 2010;Ozkan et al, 2011;Deschamps et al, 2012;Nguyen et al, 2013). For Chang 8 sandstone, where chlorite rims are present, the formation of quartz overgrowths is actually inhibited and thus porosity being preserved (Fig.…”

Section: Chloritementioning

confidence: 92%

“…Diagenetic heterogeneities strongly influence reservoir performance and fluid flow (Deschamps et al, 2012). Effective resource exploitation requires comprehensive reservoir description and characterization to identify the reservoir properties in such diagenetically heterogeneous sandstones (Ozkan et al, 2011), it is of great significance to consider the impact of diagenetic processes and diagenetic minerals on reservoir quality, and this could provide a powerful tool to predict the high quality reservoirs within sandstone successions (Higgs et al, 2007;Ajdukiewicz and Lander., 2010;Morad et al, 2010;Tobin et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Prediction of Diagenetic Facies using Well Logs: Evidences from Upper Triassic Yanchang Formation Chang 8 Sandstones in Jiyuan Region, Ordos Basin, China

Lai

Wang

Chai

et al. 2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Section: Chloritementioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Prediction of Diagenetic Facies using Well Logs: Evidences from Upper Triassic Yanchang Formation Chang 8 Sandstones in Jiyuan Region, Ordos Basin, China

Lai

Wang

Chai

et al. 2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Secondary porosity refers to the pore space resulting from the partial to complete dissolution of cements and/or detrital framework grains (Tobin et al, 2010). Dissolution is critical to the formation of secondary pore in sandstone reservoir.…”

Section: Dissolutionmentioning

confidence: 99%

Controlling factors and physical property cutoffs of the tight reservoir in the Liuhe Basin

Tan

Wang

et al. 2017

Adv. Geo-Energ. Res.

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Tight gas sandstone reservoirs of the Lower Cretaceous Xiahuapidianzi Formation are the main exploration target in the Liuhe Basin in China. Petrology characteristics, reservoir space (pore space), controlling factors and physical property cutoffs of the tight sandstone reservoir in the Liuhe Basin were determined through the integrated analysis of several methods including: casting thin section, field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), mercury intrusion porosimetry (MIP), nuclear magnetic resonance (NMR) and nitrogen gas adsorption (N2GA). The sandstones dominated by lithic arkoses and feldspathic litharenites are characterized by low porosity, low permeability and strong microscopic heterogeneity. The porosity has a range between 0.48% and 4.80%, with an average of 2.26%. Intercrystalline pores, intergranular pores, dissolved pores and microfractures can be observed through the casting thin section and FE-SEM images. Compaction and carbonate cementation are the two primary mechanisms resulting in the low porosity of the Liuhe sandstones. Microfractures improve the permeability of the tight sandstones and provide pathways for fluid migration and the storage of hydrocarbon accumulations. Moreover, the theoretical cutoff of the porosity in the Xiahuapidianzi Formation tight sandstones is 3.3%.

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“…Tobin et al, 2010). In these sam ples, de for ma tion of duc tile grains and mica be tween quartz grains il lus trates po ros ity reduc tion by me chan i cal com pac tion (Fig.…”

Section: Influence Of Diagenetic Alteration and Composition On Reservunclassified

The influence of diagenetic alterations on porosity in the Triassic Narrabeen Group, Southern Sydney Basin, Australia

Gahtani¹

2013

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The in flu ence of diagenetic al ter ations on po ros ity in the Tri as sic Narra been Group, South ern Syd ney Ba sin, Aus tra lia Pe trog ra phy of the Tri as sic Narra been Group (South ern Syd ney Ba sin of Aus tra lia) was de scribed by thin sec tion, scan ning elec tron mi cro scope and X-ray dif frac tion tech niques. Sand stone com po si tion in cludes mostly lithic grains with mi nor quartz, feld spar, mica and heavy min er als; litharenites and sublitharenites are com mon and quartzarenites are rare. Quartz in cludes monocrystalline and polycrystalline grains while the feld spar in cludes both K-feld spar and plagioclase. Vol ca nic, sed i mentary and chert rock frag ments are pres ent. In thin sec tion po ros ity is vis i ble in all units, par tic u larly the coarse-grained de posits. Sec ond ary po ros ity is greater than the pri mary po ros ity. The diagenetic al ter ations in clude com pac tion, quartz overgrowths, authigenic clay min er als, car bon ate ce ment and authigenic feld spar. Com pac tion oc curred in all units dur ing diagenesis. Both early and late diagenetic car bon ate ce ment is im por tant in the Narra been Group. Pore-fill ing car bon ate cement re duced po ros ity whereas dis so lu tion of car bon ate re sulted in sec ond ary po ros ity. Authigenic clay min er als are widespread in all units fill ing pores and oc cur ring as grain-coat ings on de tri tal and authigenic grains. Where they coat quartz grains they pre serve po ros ity by pre vent ing growth of quartz overgrowths. Dis so lu tion of un sta ble feld spar and lithic grains pro vided sec ond ary po ros ity. In the Narra been Group, shale and siltstone are abun dant in the Wom barra Claystone, Stanwell Park Claystone, Bald Hill Claystone and New port For ma tion, form ing lithological seals and con fin ing lay ers. Mi nor sandstone beds oc cur in the Wom barra Claystone and con tain more po ros ity. Me dium-and coarse-grained sand stone is com mon in the Coal cliff Sand stone, Scarborough Sand stone and Bulgo Sand stone and shows low to mod er ate po ros ity. Thus, these sand stone units prob a bly con tain gas or wa ter.Key words: pe trog ra phy, diagenesis, pri mary po ros ity, sec ond ary po ros ity, quartz over growth, car bon ate ce ment. INTRODUCTIONIn the Syd ney Ba sin (Aus tra lia), the Narra been Group is the low er most of three Tri as sic rock units and is lo cated be tween the Up per Perm ian Illa warra Coal Mea sures and the Hawkesbury Sand stone (Ward, 1971a). Fine-grained sed i ment in the Narra been Group was pre vi ously stud ied by sev eral authors (e.g., Baker, 1956;Loughnan et al., 1964Loughnan et al., , 1974Goldbery and Hol land, 1973;Retallack, 1977). Ward (1972) noted quartzose, quartz-lithic and vol ca nic sand stones as the three sed i ment suites in the Narra been Group. Prov e nance mark ers of fore land ba sin-fill sed i ments were de ter mined by Cow an (1993). The com po si tion and tex ture of the Narra been Group were de scribed by McElroy (1954). De scrip tions of the pe trology in the N...

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Reservoir quality modeling of tight-gas sands in Wamsutter field: Integration of diagenesis, petroleum systems, and production data

Cited by 110 publications

References 23 publications

Prediction of Diagenetic Facies using Well Logs: Evidences from Upper Triassic Yanchang Formation Chang 8 Sandstones in Jiyuan Region, Ordos Basin, China

Prediction of Diagenetic Facies using Well Logs: Evidences from Upper Triassic Yanchang Formation Chang 8 Sandstones in Jiyuan Region, Ordos Basin, China

Controlling factors and physical property cutoffs of the tight reservoir in the Liuhe Basin

The influence of diagenetic alterations on porosity in the Triassic Narrabeen Group, Southern Sydney Basin, Australia

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