Origin, distribution and significance of carbonate cements in the Albert Formation reservoir sandstones, New Brunswick, Canada

Chowdhury, Ali H.; Noble, J. P. A.

doi:10.1016/0264-8172(96)00002-5

Cited by 48 publications

(13 citation statements)

References 12 publications

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“…Samples from 1948.9 m and 1949.6 m from Well 2, 2143.1 m and 2156.3 m from Well 4, as well as 2246.3 m and 2296.6 m from Well 5, are characterized by large amounts of this type calcite cements (> 20%) with the detrital grains floated in the calcite cement. These sandstone samples generally occur in the top-and bottom-most intervals of thick-bedded sandstone successions, consistent with previous studies (Carvalho et al, 1995;Chowdhury and James, 1996;Qi et al, 2006). The Ca 2+ for the formation of calcite cement is mainly derived from the dissolution of carbonates by organic acids in calcareous mudstones.…”

Section: * Numbers Represents the Number Of Test Points For The Emp Asupporting

confidence: 91%

Pore‐lining Chlorite Cements in Lacustrine‐deltaic Sandstones From the Upper Triassic Yanchang Formation, Ordos Basin, China

Xia

Lin

Cai

et al. 2012

Journal of Petroleum Geology

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Non-marine sandstones in the upper Triassic Yanchang Formation constitute an important reservoir rock in the Zhenjing area of SW Ordos Basin, Central China. A study of the diagenetic history of these sandstones, including the formation of pore-lining chlorite cements, was undertaken to investigate controls on reservoir quality. Data came from the petrographic analysis of cores from five wells. The sandstones were deposited in a lacustrine-deltaic setting and consist of fineto medium-grained feldspathic litharenites and lithic arkoses, and in general have low porosity and permeability. The principal diagenetic processes observed were compaction, cementation, dissolution and replacement. Mechanical compaction and calcite cementation caused a reduction in reservoir quality. The precipitation of pore-lining chlorite inhibited quartz cementation and preserved porosities of up to 16%. The chlorite occurs in a double layer which lines pore spaces, particularly in distributary channel sandstones. Both chlorite layers grew by precipitation from pore waters containing the products of dissolution of volcanic rock fragments, biotites and feldspars. An increase of temperature during diagenesis was probably the cause of the two generations of chlorite cement, and also of the observed variations in elemental concentrations between the earlier-and later-formed chlorite. The chlorite was precipitated after early compaction but before other diagenetic phases.

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Section: * Numbers Represents the Number Of Test Points For The Emp Asupporting

confidence: 91%

Pore‐lining Chlorite Cements in Lacustrine‐deltaic Sandstones From the Upper Triassic Yanchang Formation, Ordos Basin, China

Xia

Lin

Cai

et al. 2012

Journal of Petroleum Geology

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“…The ankerite cements in the Albert Formation fluvio-lacustrine reservoir sandstones in east Canada preferentially occurred at deeper burial depths formed by organic acid and clay/carbonate reactions (Chowdhury and Noble, 1996). Shale has been considered as an external source for sandstone cements during later diagenesis by a number of authors (Land and Dutton, 1978;Crossey and Larsen, 1992;Hayes et al, 1996).…”

Section: Article In Pressmentioning

confidence: 99%

Reservoir characteristics and their effects on hydrocarbon accumulation in lacustrine turbidites in the Jiyang Super-depression, Bohai Bay Basin, China

Chen

Pang

Jiang

et al. 2009

Marine and Petroleum Geology

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“…Ankerite normally fills grain fractures and feldspar dissolution pores ( Figure 5(i), cf. Chowdhury and Noble, 1996), and replaces biotite ( Figure 5(h)), calcite and dolomite ( Figure 5(d)). Comparable descriptions of precursor calcite and dolomite cements replaced by ankerite cements have been reported elsewhere (Hendry et al, 2000;Kantorowicz, 1985).…”

Section: Types Of Carbonate Cementsmentioning

confidence: 99%

Origin of carbonate cements with implications for petroleum reservoir in Eocene sandstones, northern Dongying depression, Bohai Bay basin, China

Cao

Wang

et al. 2016

Energy Exploration & Exploitation

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The Eocene Es4s interval is an important petroleum reservoir of sublacustrine fan dominated at the depths of 2500-4000 m in Dongying depression, Bohai Bay basin. Based on core observation, three types of carbonate-cemented beds have been identified and commonly contain ferroan calcite and ankerite predominantly and less calcite and dolomite. Precipitation temperatures range from 34.6 to 72.8 C for calcite and dolomite cements, and from 110 to 153 C for ferroan calcite and ankerite cements. The high 13 C PDB values (À0.65 to +5.59%) for calcite and dolomite suggest that dissolved inorganic carbon, derived from methanogenic fermentation of organic matter in adjacent mudstones. The low 13 C PDB values (+1.04 to +3.29%) for ferroan calcite and ankerite probably indicate a mixture of carbon derived from decarboxylation of organic acid as well as from the dissolution of early formed carbonate cements. High plug porosity is mainly developed at the central section of sandstones vertically and the porosity decreases sharply toward the top and base of the sandstones due to extensively carbonate-cemented beds. The carbonate-cemented beds varies from 0.02 to 0.5 m in thickness and might extend from tens to hundreds meters laterally. It could be served as fluid-flow barriers and seals for petroleum, and result in reservoir deterioration and significant heterogeneity.

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Origin, distribution and significance of carbonate cements in the Albert Formation reservoir sandstones, New Brunswick, Canada

Cited by 48 publications

References 12 publications

Pore‐lining Chlorite Cements in Lacustrine‐deltaic Sandstones From the Upper Triassic Yanchang Formation, Ordos Basin, China

Pore‐lining Chlorite Cements in Lacustrine‐deltaic Sandstones From the Upper Triassic Yanchang Formation, Ordos Basin, China

Reservoir characteristics and their effects on hydrocarbon accumulation in lacustrine turbidites in the Jiyang Super-depression, Bohai Bay Basin, China

Origin of carbonate cements with implications for petroleum reservoir in Eocene sandstones, northern Dongying depression, Bohai Bay basin, China

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