Real-time hydrogen mud logging during the Wenchuan earthquake fault scientific drilling project (WFSD), holes 2 and 3 in SW China

Fang, Zhen; Liu, Yaowei; Yang, Duoxing; Guo, Liang; Zhang, Lei

doi:10.1007/s12303-017-0068-7

Cited by 11 publications

(3 citation statements)

References 43 publications

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“…Mechanochemical interactions between fractured rock surfaces and groundwater can produce hydrogen in active fault zones such as Yamasaki Fault [132], Wenchuan Fault [133], and San Andreas fault [24]. Experimental studies subsequently demonstrated that hydrogen can be released during the crushing and grinding of rocks [22,23].…”

Section: Specific Environmental Settings: Relevant Hydrogen Sourcementioning

confidence: 99%

Subsurface Microbial Hydrogen Cycling: Natural Occurrence and Implications for Industry

et al. 2019

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Hydrogen is a key energy source for subsurface microbial processes, particularly in subsurface environments with limited alternative electron donors, and environments that are not well connected to the surface. In addition to consumption of hydrogen, microbial processes such as fermentation and nitrogen fixation produce hydrogen. Hydrogen is also produced by a number of abiotic processes including radiolysis, serpentinization, graphitization, and cataclasis of silicate minerals. Both biotic and abiotically generated hydrogen may become available for consumption by microorganisms, but biotic production and consumption are usually tightly coupled. Understanding the microbiology of hydrogen cycling is relevant to subsurface engineered environments where hydrogen-cycling microorganisms are implicated in gas consumption and production and corrosion in a number of industries including carbon capture and storage, energy gas storage, and radioactive waste disposal. The same hydrogen-cycling microorganisms and processes are important in natural sites with elevated hydrogen and can provide insights into early life on Earth and life on other planets. This review draws together what is known about microbiology in natural environments with elevated hydrogen, and highlights where similar microbial populations could be of relevance to subsurface industry.

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Section: Specific Environmental Settings: Relevant Hydrogen Sourcementioning

confidence: 99%

Subsurface Microbial Hydrogen Cycling: Natural Occurrence and Implications for Industry

et al. 2019

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“…The gas logging interpretation (GLI), which collects the data signal from the well and has the advantages of rapidity and directness, is another method to determine the gas content. However, the absolute value of gas logging data in a tight gas reservoir is lower than that in a conventional reservoir, so it is difficult to acquire all gas component data, which causes a large difference between actual production and forecast production (Fang et al 2018). In addition, varieties of mathematical algorithms are introduced to the evaluation models for accurate forecasting.…”

Section: Introductionmentioning

confidence: 99%

A novel productivity evaluation approach based on the morphological analysis and fuzzy mathematics: insights from the tight sandstone gas reservoir in the Ordos Basin, China

Liu

Gongyang

Lou

et al. 2019

J Petrol Explor Prod Technol

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Tight gas reservoirs have rich potential resources, which are hot spots in unconventional oil and gas exploration and development. Due to their strong heterogeneity and complex pore structures, the conventional approaches of productivity evaluation always have difficulty in predicting the gas content. This study aims to devise a new method to interpret the productivity of LX Block in the Ordos Basin using the morphological theory and fuzzy mathematics. First, core test results were used to investigate the reservoir quality and physical properties. Then, the change law of gas content was defined by the morphological theory of logging and mud logging curves. Assignments of those factors that affected the final production were provided based on fuzzy mathematics. Finally, the prediction model of productivity was established. The results show that the lower limit of the reservoir thickness in the LX Block is 3.1 m, whereas the porosity and permeability are 5% and 0.15 × 10 −3 μm 2 , respectively. The morphological characteristic of the gas logging curve for those layers with high potential production normally presents a box shape with a high relative number of serration. The reservoir in the studied area can be classified into four categories according to the relationship between the logging curve shape and daily production, and each category is automatically identified. The coincidence rate between the prediction results and the gas test results is 84.1%, which satisfies the demand on the field. The findings have important theoretical and practical significance for screening the location of fracturing spots and predicting the production of tight gas reservoirs.

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“…Moreover, long-term research monitoring some aquifers revealed that the hydrogen concentration in the water-bearing rocks has a direct relation with the last tectonic activity of the area [19]. Furthermore, other studies reported that the newly propagated earthquake-induced fractures have a larger volume of H 2 content in comparison to the old, non-activated fractures [35,36]. Due to this matter, some researchers have proposed hydrogen concentration as an indicator of predicting occurrences of earthquakes.…”

mentioning

confidence: 99%

Up-to-Date Status of Geoscience in the Field of Natural Hydrogen with Consideration of Petroleum Issues

Knez,

Zamani

2023

Energies

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The perspective of natural hydrogen as a clear, carbon-free, and renewable energy source appears very promising. There have been many studies reporting significant concentrations of natural hydrogen in different countries. However, natural hydrogen is being extracted to generate electricity only in Mali. This issue originates from the fact that global attention has not been dedicated yet to the progression and promotion of the natural hydrogen field. Therefore, being in the beginning stage, natural hydrogen science needs further investigation, especially in exploration techniques and exploitation technologies. The main incentive of this work is to analyze the latest advances and challenges pertinent to the natural hydrogen industry. The focus is on elaborating geological origins, ground exposure types, extraction techniques, previous detections of natural hydrogen, exploration methods, and underground hydrogen storage (UHS). Thus, the research strives to shed light on the current status of the natural hydrogen field, chiefly from the geoscience perspective. The data collated in this review can be used as a useful reference for the scientists, engineers, and policymakers involved in this emerging renewable energy source.

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Real-time hydrogen mud logging during the Wenchuan earthquake fault scientific drilling project (WFSD), holes 2 and 3 in SW China

Cited by 11 publications

References 43 publications

Subsurface Microbial Hydrogen Cycling: Natural Occurrence and Implications for Industry

Subsurface Microbial Hydrogen Cycling: Natural Occurrence and Implications for Industry

A novel productivity evaluation approach based on the morphological analysis and fuzzy mathematics: insights from the tight sandstone gas reservoir in the Ordos Basin, China

Up-to-Date Status of Geoscience in the Field of Natural Hydrogen with Consideration of Petroleum Issues

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