Research on the geochemical characteristics of coalbed methane and relationship between gas-logging and measured gas component in Guxu mine of southern Sichuan coalfield, China

Sun, Xiaoming; Hu, Yiliang; Dan, Li

doi:10.1007/s12517-021-08298-3

Arab J Geosci

2021

DOI: 10.1007/s12517-021-08298-3

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Research on the geochemical characteristics of coalbed methane and relationship between gas-logging and measured gas component in Guxu mine of southern Sichuan coalfield, China

Xiaoming Sun

Yiliang Hu

Li Dan

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2024

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Cited by 1 publication

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Application of FLAIR technology in evaluation of complex fluids—Taking M structure of Huizhou sag as an example

Yuan,

Yang,

Cao

et al. 2024

J. Phys.: Conf. Ser.

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Due to the complexity of reservoir fluid types and the difficulty in identifying hydrocarbon abundance in M structure of the Huizhou sag, the conventional gas logging methods are affected by instrument accuracy, resulting in indistrument difference in gas logging response characteristics. Consequently, the traditional evaluation methoda are inadequate.To address these challenges, fluid logging & analysis in real time technology(FLAIR) is applied. This technology quantifies various gas components by detecting the ion mass, offering advantages such as precise detection and wide measurement range.In this paper,the data of FLAIR technology was analyzed. Based on the differences in hydrocarbon components of various fluids, fluid identification charts were developed using the hydrocarbon component ratio, humidity ratio (WH) and equilibrium ratio (BH) parameters, which could effectively distinguish complex fluids such as gas, condensate, oil and volatile oil formations.The oil index and gas index were selected, and the gas-oil ratio index was formulated. A relationship model between this parameter and the gas-oil ratio data, measured through cable sampling and formation testing was established, enabling the prediction of gas-oil ratio data during drilling. By correcting gas data to reduce the influence of factors such as drilling time, displacement volume and bit size through gas data correction, the evaluation chart of oil and gas abundance, based on the anomaly ratio of gas measurement can adress the evaluation challenges of buried hill reservoir. The aforementioned method provides robust technical support for reservoir fluid identification and evaluation in M structure of Huizhou sag, and has significant application value in complex reservoirs and complex fluid conditions.

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Application of FLAIR technology in evaluation of complex fluids—Taking M structure of Huizhou sag as an example

Yuan,

Yang,

Cao

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

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Research on the geochemical characteristics of coalbed methane and relationship between gas-logging and measured gas component in Guxu mine of southern Sichuan coalfield, China

Cited by 1 publication

References 27 publications

Application of FLAIR technology in evaluation of complex fluids—Taking M structure of Huizhou sag as an example

Application of FLAIR technology in evaluation of complex fluids—Taking M structure of Huizhou sag as an example

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