Geochemical and geological characteristics of the Es3L lacustrine shale in the Bonan sag, Bohai Bay Basin, China

Wang, Min; Wilkins, R. J.; Song, Guoqi; Zhang, Linye; Xiang, Xu; Zheng, Lirong; Chen, Guohui

doi:10.1016/j.coal.2014.12.007

Cited by 135 publications

(85 citation statements)

References 52 publications

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“…3). These average values are typical for mudstones deposited in saline or hypersaline conditions (Carroll and Bohacs, 2001) and are much lower than published averages for the Bakken Shale (~12 wt.%) (Kuhn et al, 2012) and freshwater, lacustrine shales, such as the Qingshankou Shale of Songliao Basin and the Es3 L shale of the Bonan Sag (Wang et al, 2015). Although the TOC contents are relatively low for the Shahejie Formation mudstones, considerable amounts of conventional oils, sourced from Shahejie mudstones, have been produced in recent years (Zeng et al, 2013).…”

Section: Petroleum Generation Potential and Thermal Maturitymentioning

confidence: 60%

“…For example, the type II OM occurring in saline mudstones and marine shales generally has well developed pores which develop during oil generation, unlike the type I OM that occurs in freshwater lacustrine shales (Wang et al, 2015). InterP and intraP pores may both be developed in a variety of shales, but most pores occurring in the Shahejie Formation saline mudstones studied, including some pores within the clay and organic matter aggregates appear to have been enlarged by dissolution (Fig.…”

Section: Poresmentioning

confidence: 96%

“…Niobrara and Bakken deposits) and fractured shale (Monterey and Pierre deposits) (Jarvie, 2012). Large amounts of shale oil have been produced from marine shales of the USA, such the Bakken, Eagle Ford and Monterey deposits (Jarvie, 2012), but shale oil has also been extracted from lacustrine shales (Wang et al, 2015). Some 'low maturity' oils occur in shales deposited in saline to hypersaline lakes including the Wilkins Peak Member of the Green River Formation (Wyoming), the Jingjingzigou Formation (Junggar Basin, China), the Jianghan and Qaidam basins (China), and the Blanca Lila Formation (Argentina) (Carroll and Bohacs, 2001), but overall few publications exist on saline mudstone shale oil deposits.…”

Section: Introductionmentioning

confidence: 99%

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Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Wang

Sherwood

et al. 2015

International Journal of Coal Geology

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Section: Petroleum Generation Potential and Thermal Maturitymentioning

confidence: 60%

Section: Poresmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Wang

Sherwood

et al. 2015

International Journal of Coal Geology

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“…10 m (in direction of the longest axis), with angular morphologies, typically occurring at the clast's rims progressing into the center (see also [61,62]). Completely isolated and centered pores are considered as fluid inclusions (see also [63]) and The visible porosity of sample NJ-019 and NJ-023 is significantly less but occurs similar to the cavities described in sample NJ-001 ( Figure 6).…”

Section: Qualitative Description Of Mineralogymentioning

confidence: 99%

Using BIB-SEM Imaging for Permeability Prediction in Heterogeneous Shales

et al. 2017

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Organic-rich shale samples from a lacustrine sedimentary sequence of the Newark Basin (New Jersey, USA) are investigated by combining Broad Ion Beam polishing with Scanning Electron Microscopy (BIB-SEM). We model permeability from this 2D data and compare our results with measured petrophysical properties. Three samples with total organic carbon (TOC) contents ranging from 0.7% to 2.9% and permeabilities ranging from 4 to 160 nD are selected. Pore space is imaged at high resolution (at 20,000x magnification) and segmented from representative BIB-SEM maps. Modeled permeabilities, derived using the capillary tube model (CTM) on segmented pores, range from 2.3 nD to 310 nD and are relatively close to measured intrinsic permeabilities. SEM-visible porosities range from 0.1% to 1.8% increasing with TOC, in agreement with our measurements. The CTM predicts permeability correctly within one order of magnitude. The results of this work demonstrate the potential of 2D BIB-SEM for calculating transport properties of heterogeneous shales.

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“…Nonetheless, recently a lot of research on this topic has been performed (Ding et al 2013;Guo et al, 2014;Ji et al, 2014;Tang et al, 2014;Wang et al, 2015;Yang et al, 2015). The study presented here will evaluate the source rock potential and hydrocarbon composition of mud rock sequences (shale beds) directly overlying the Westphalian coal seams.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the shale oil and gas potential of Westphalian mudstone successions in the Campine Basin, NE Belgium (well KB174): Palaeoenvironmental and palaeogeographical controls

Vandewijngaerde¹,

Piessens²,

Dusar³

et al. 2016

Geol. Belg.

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ABSTRACT. Westphalian mudstones in the Hechtel-Hoef well, Campine Basin, Belgium, were examined for their hydrocarbon potential by means of Rock-Eval pyrolysis. These mudstones have an average TOC content of 3.6% and mean S2 and Hydrogen Index values of respectively 7.9 and 164.2 mg/g and contain a mixture of kerogen types II and III. This indicates that in contrast to the Westphalian coal seams, these successions are not predominantly gas-prone but could also generate higher molecular-weight hydrocarbons and condensates. Three different palaeoenvironments, i.e. non-marine flood plains (FP), freshwater palaeoenvironment (FW), euryhaline palaeoenvironment (E) were recognised in the Westphalian mudstones, each with different hydrocarbon potential. Flood plain environments show the highest TOC and S2 values. Mudstone intervals with high TOC content occur more frequently in Westphalian A and have in general higher S2 values. The higher abundance of kerogen type II-enriched organic matter in Westphalian A indicates a lower delta plain setting. It is shown that the palaeogeographic context can be used as a proxy for the hydrocarbon generation potential of mudstone deposits from the coastal plain or of lacustrine origin.

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Geochemical and geological characteristics of the Es3L lacustrine shale in the Bonan sag, Bohai Bay Basin, China

Cited by 135 publications

References 52 publications

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China

Using BIB-SEM Imaging for Permeability Prediction in Heterogeneous Shales

Investigations on the shale oil and gas potential of Westphalian mudstone successions in the Campine Basin, NE Belgium (well KB174): Palaeoenvironmental and palaeogeographical controls

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