The shale gas revolution in China—problems and countermeasures

Chen, Xiaohui; Liu, Zhicheng; Liang, Xing; Zhao, Ziqiang; Zhang, Tingshan; Zhu, Haihua; Lang, Jun

doi:10.15446/esrj.v22n3.74390

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…As early as in March of 2011, the US Energy Information Agency assessed the shale gas technical reserves in China at 36.1 trillion m 3 , which is significantly higher than the US shale gas reserves, estimated at 24.4 trillion m 3 [27].…”

Section: Oil and Gas Of Shale Stratamentioning

confidence: 82%

Review of unconventional hydrocarbon resources: production technologies and opportunities for development

Tolmachev¹,

Urunov²,

Muminova³

et al. 2020

Min. miner. depos.

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Purpose. Study the state of modern technologies for the extraction of unconventional hydrocarbon resources and determine the prospects for their development. Methods. The method of qualitative and quantitative analysis of scientific literature, data from the U.S. Energy Information Administration, national reports on the Extractive Industries Transparency Initiative standard, as well as open Internet sources, are used in the research. Structurally, the research consists of a sequential analysis of the main types of unconventional hydrocarbon resources. The analysis of each type of unconventional hydrocarbon resources is to determine its main geological characteristics, conditions of occurrence, prospecting-predicting criteria and peculiarities, technologies of recovery, country (geographic) localization and statistical data on production dynamics. Findings. The research presents a systematization of the main types of unconventional hydrocarbon resources, such as oil and gas of shale strata, tight sands gas (basin-central gas type and tight sands gas), methane gas of coal fields, bituminous and oil sands, oil from oil shale, as well as their sequential analysis. The definitions of the main types of unconventional hydrocarbon resources according to Russian and English terminology are synchronized. Depending on the type of unconventional hydrocarbon resources, the conditions for their occurrence, prospecting-predicting criteria and diagnostic properties, country (geographic) localization are determined. The research presents the world experience in the recovery of unconventional hydrocarbon resources (North America, Europe, and the Asia-Pacific region), as well as the dynamics of shale gas and oil recovery (using the example of the United States). Originality. A sequential systematic analysis of unconventional hydrocarbon resources, depending on their type, has been made. Practical implications. The main objectives have been determined for solving the problem of using the unconventional hydrocarbon sources potential, which can lead to the conclusions about the prospects for the unconventional hydrocarbon resources recovery. It is advisable to assess the necessity of studying unconventional hydrocarbon resources in countries oriented on the use of traditional resources.

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Section: Oil and Gas Of Shale Stratamentioning

confidence: 82%

Review of unconventional hydrocarbon resources: production technologies and opportunities for development

Tolmachev¹,

Urunov²,

Muminova³

et al. 2020

Min. miner. depos.

View full text Add to dashboard Cite

show abstract

“…As the main target layer for shale gas exploration, the Silurian Longmaxi Formation was deposited in the epicontinental sea environment bounded by paleouplifts and local highlands, which resulted from compression of the Middle and Upper Yangtze Block. Generally, the Silurian Longmaxi Formation is a set of deep-water organicrich shale deposits formed in the constrained environment with depleted oxygen (Chen et al 2018a;Li et al 2019). This set of shale is about 200 m thick, with a TOC range of 0.19%-8.46% and a vitrinite reflectance (Ro) range of 2.2%-3.96%, which indicates high to over-high maturity that corresponds to the gas generation stage.…”

Section: Geological Settingmentioning

confidence: 99%

“…Compared with conventional hydrocarbons, shale gas is essentially different in the occurrences, accumulation characteristics, and enrichment mechanisms under the low porosity and low permeability conditions (Wang and Li 2017;Wu et al 2018;Chen et al 2018a;Daniel 2018). Specifically, the Longmaxi Formation shale in the Dianqianbei Area is featured by over-high thermal maturity and high nitrogen content, which increases the difficulty and risk of shale gas exploration.…”

Section: Introductionmentioning

confidence: 99%

Geochemical characteristics and genetic mechanism of the high-N2 shale gas reservoir in the Longmaxi Formation, Dianqianbei Area, China

Zhang

et al. 2020

Pet. Sci.

Self Cite

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As an important pilot target for shale gas exploration and development in China, the Longmaxi Formation shale in the Dianqianbei Area is characterized by high content of nitrogen, which severely increases exploration risk. Accordingly, this study explores the genesis of shale gas reservoir and the mechanism of nitrogen enrichment through investigating shale gas compositions, isotope features, and geochemical characteristics of associated gases. The high-nitrogen shale gas reservoir in the Longmaxi Formation is demonstrated to be a typical dry gas reservoir. Specifically, the alkane carbon isotope reversal is ascribed to the secondary cracking of crude oil and the Rayleigh fractionation induced by the basalt mantle plume. Such a thermogenic oil-type gas reservoir is composed of both oil-cracking gas and kerogen-cracking gas. The normally high nitrogen content (18.05%–40.92%) is attributed to organic matter cracking and thermal ammoniation in the high-maturity stage. Specifically, the high heat flow effect of the Emeishan mantle plume exacerbates the thermal cracking of organic matter in the Longmaxi Formation shale, accompanied by nitrogen generation. In comparison, the abnormally high nitrogen content (86.79%–98.54%) is ascribed to the communication between the atmosphere and deep underground fluids by deep faults, which results in hydrocarbon loss and nitrogen intrusion, acting as the key factor for deconstruction of the primary shale gas reservoir. Results of this study not only enrich research on genetic mechanism of high-maturity N2 shale gas reservoirs, but also provide theoretical guidance for subsequent gas reservoir resource evaluation and well-drilling deployment in this area.

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Changes of Microorganism and Corrosion Tendency During Fracturing of Flowback Fluid Recovery Wells of Shale Gas

Chen

Tan

Zhang³

et al. 2022

Chem Technol Fuels Oils

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The shale gas revolution in China—problems and countermeasures

Cited by 6 publications

References 5 publications

Review of unconventional hydrocarbon resources: production technologies and opportunities for development

Review of unconventional hydrocarbon resources: production technologies and opportunities for development

Geochemical characteristics and genetic mechanism of the high-N2 shale gas reservoir in the Longmaxi Formation, Dianqianbei Area, China

Changes of Microorganism and Corrosion Tendency During Fracturing of Flowback Fluid Recovery Wells of Shale Gas

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