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2024 Vol. 11, No. 3
Published: 2024-06-20
1
Analysis of the latest development trend of global natural hydrogen exploration and development
WANG Haihua, XUE Yingxi, ZHANG Wei, FANG Daren, WANG Haihua, WANG Minghan
DOI: 10.19388/j.zgdzdc.2024.03.01
The hydrogen surface anomalies were widespreadly discovered and the genesis mechanism and accumulation mechanism of underground hydrogen were deeply understood. As a clean energy, the natural hydrogen is expected to become a key energy source for global energy transition and carbon neutrality due to its huge resource potential and renewable nature. Through the tracking of the latest progress in global natural hydrogen exploration and development, it is concluded that natural hydrogen has become a hot topic in the global geology and energy fields, and the resource surveys and discoveries of natural hydrogen driven by multiple genesis mechanism have extensive and multi-point characteristics. The global development of natural hydrogen was driven by continuous investment of major countries as Europe and the United States. Besides, the hydrogen and helium have the potential of “co-exploration and co-exploitation”. In view of the preliminary progress in natural hydrogen resources discovery in China and the preliminary assessment of accumulation conditions and favorable zones, it is suggested that China should carry out the nationwide natural hydrogen resource survey and evaluation as soon as possible.
2024 Vol. 11 (3): 1-8 [
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9
Application and prospects of reservoir micro-organisms in oil and gas development
LUO Na, MU Hongmei
DOI: 10.19388/j.zgdzdc.2024.03.02
Oil reservoirs are typical extreme environments characterized by high temperature, high pressure, high salinity and anaerobic, and the reservoir micro-organisms are important components. Research on reservoir micro-organisms is of great significance to hydrocarbon resource formation, biogeochemical cycling, and the life origins and evolution. Through literature reviews, the authors in this paper described interaction modes and primary functions of micro-organisms in the reservoir, and summarized mechanisms and advancements in the application of reservoir micro-organisms in enhancing oil recovery, bioremediation of oil pollution, and carbon capture, utilization and storage (CCUS), and identified key issues that need to be addressed in the utilization of reservoir micro-organisms. The reservoir micro-organisms have advantages of low-cost and environmentally friendly in oil and gas exploration and development and environment restoration, indicating promising application prospect. This study could provide references and insights for further research and application in this field.
2024 Vol. 11 (3): 9-16 [
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51
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17
Metallogenic background and exploration progress of the southern Waishixia lithium-beryllium rare metal deposit in the western Altyn Tagh of Xinjiang Province
ZHANG Peng, LIU Bao, YANG Xiaofei, LUO xintao, DENG Langjiang, FAN Zichun, LIU Xingzhong, CHEN Jianzhong, LIU Shanbao, WANG Denghong, DAI Hongzhang
DOI: 10.19388/j.zgdzdc.2024.03.03
Rare metal minerals such as lithium and beryllium are important strategic mineral resources. In recent years, several rare metal pegmatite-type deposits have been discovered in Altyn area, which have emerged as a new rare metal metallogenic belt, but with relatively low investigation and research level. Through the discussion of the metallogenic dynamic background of the Altyn orogenic belt, the authors concluded that the rare metal metallogenesis in the Altyn orogenic belt covered many different tectonic evolution stages of the orogenic movement, indicating good metallogenic conditions for rare metals and great prospecting potential. The southern Waishixia lithium-beryllium rare metal deposit located in the western Altyn Tagh has a large prospect, based on the exploration and evaluation of this deposit. The lithium-beryllium rare metal ore body in the southern Washixia mainly occurs in the pegmatite veins of greenschist facies and amphibolite facies metamorphic rock series, and the deposit type is granite-pegmatite type rare metal deposit. According to the existing exploration results, the inferred rare metal resources of this deposit have reached the scale of medium and above, and there is still a great space for increasing storage in the deep and peripheral areas with the progress of exploration. The research results are of great reference significance to the deposit search of similar types in the Altyn orogenic belt.
2024 Vol. 11 (3): 17-24 [
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56
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Radon anomaly characteristics in the soil and uranium metallogenic prediction in Xianlaga depression of Erlian Basin
GUO Jianjun, ZHAO Tianlin, PAN Wei, WEI Anjun, YIN Yongpeng, LI Zhao
DOI: 10.19388/j.zgdzdc.2024.03.04
Erlian Basin is important sandstone-type uranium deposits in Northern China. Many medium-scale and large-scale uranium deposits have been found in the periphery and adjacent areas of Xianlaga depression, indicating favorable uranium prospecting potential. The authors conducted measurement of radon in the soil and its daughters for obtaining the information of weak (uranium) mineralization on the surface of the depression, The anomaly data were analyzed and compared with of the known radon anomaly measurement model of the uranium deposits in Erlian Basin, and the drilling verification was carried out. Three anomaly areas of radon and its daughters were delineated in the working area based on soil radon gas measurement. Combined with the known anomaly models of uranium deposits, drilling holes were deployed in M1 anomaly high value area to verify the superiority. Multistage oxidation alteration was found in the sandstone of the Lower Saihan Formation in ZKX-1 borehole, and it was consistent with the prediction of the anomaly model, indicating favorable uranium prospecting potential. It is considered that the M1 anomaly area is caused by the strong development of phreatic interlayer or interlayer oxidation, and uranium mineralization enrichment may exist in the low halo or background value area of radon concentration on both sides of the high value area, which is worthy of further exploration. The M2 and M3 anomaly areas may be related to phreatic oxidation, and the intensity of the anomaly is controlled by the porosity and permeability of the oxidized sand body. The Y3 uranium prospective area between the M2 and M3 anomaly areas are favorable prospecting areas. This research shows that the depression has good uranium metallogenic potential and cound provide references for the further uranium prospecting.
2024 Vol. 11 (3): 25-31 [
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32
Mineralogical chemical characteristics of chromite from diabase in Panjiagou area of the eastern fourth diamond metallogenic belt and its significance in Liaoning Province
YANG Xianzhong, ZHOU Yan, XIAO Fan, XU hua, LAO Jinxiu, XIANG Hua
DOI: 10.19388/j.zgdzdc.2024.03.05
Yongning area has been classified as the fourth diamond metallogenic belt in Liaoning Province due to the discovery of primary diamond. However, the diamond source has not yet been determined so far, and it is necessary to reinforce the study of the indicator minerals associated with the diamond. The compositions of chromite selected from the diabase in Panjiagou area in the eastern Yongning area were analyzed by electron microprobe, and they are compared with the chromite from typical kimberlite pipes in Liaoning Province to explore chromite genesis and the relationship with diamonds. According to the particle sizes, morphology, and melting erosion characteristics in the back-scattered electron images of chromite samples and the composition feature of high Cr, rich Mg, low Al and poor Ti through electron probe micro analysis, the authors speculated that the chromite come from mantle xenocryst, belonging to chromite subclass, which is mainly mafic-chromium-aluminium- ferrum subspecies and mafic-chromium-aluminium subspecies. The calculated formation temperatures of the chromite are 1 252~1 307 ℃, which is consistent with the reported formation temperatures of the chromite in Wafangdian kimberlite, and is also closed to the formation temperature of diamonds. It indicates an affinity relationship between chromites and diamonds, and great potential for diamond prospecting in the diabases of Panjiagou area. This study is significant for the exploration of primary diamond deposits and the identification of the diamond sources in Panjiagou area.
2024 Vol. 11 (3): 32-41 [
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40
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42
Structural characteristics and ore control mechanism of Shipingchuan molybdenum mining area in the southeastern Zhejiang Province
GAO Yuan, XU Houti, DAI Ganggang, HUANG Xiaojun, ZHANG Xiaohua, LIU Zixuan
DOI: 10.19388/j.zgdzdc.2024.03.06
After decades of geological exploration in Shipingchuan molybdenum mining area in the southeastern Zhejiang, the amount of molybdenum resources has reached a large scale. In order to better understand the ore control mechanism in Shipingchuan molybdenum mining area and provide theoretical basis for determining new prospecting targets around the old mine, the authors systematically observed and analyzed the characteristics of the intra layer structure, joint and fissure measurement statistics, quartz vein cutting relationship, and micro vein cutting relationship in the mining area. Regional structural analysis method and joint statistical analysis method were used to study the structural characteristics and ore control mechanism of Shipingchuan molybdenum mining area. The molybdenum deposit was generally controlled by Shipingchuan volcanic dome and structure,and it wholely occured within the faults and intra layer structure belts in the range of Shipingchuan volcanic dome. Besides, it was strictly controlled by the intra layer structure, which provides a migration pathway and storage space for the formation of molybdenite veins. The regional tectonic stress field and the condensation and contraction of the rock mass jointly formed the intra layer structure of the mining area. The study results could provide some references for prospecting targets screening in the peripheral areas of Shipingchuan molybdenum mining area.
2024 Vol. 11 (3): 42-50 [
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37
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51
Study on the adsorption characteristics of ammonia nitrogen by the riverbed sediment: Taking Xinxiang section of Wei River as an example
HAN Zheng, ZHANG Jiayao, MA Mengke, GAO Tianqi, YU Liyuan
DOI: 10.19388/j.zgdzdc.2024.03.07
In order to study the migration and conversion of pollutants in river-groundwater system of Wei River Basin, the authors adopted the static adsorption experiment to explore the adsorption characteristics of the feature pollutants in Wei River by the riverbed sediment. The river bed sediment samples in Xinxiang section of Wei River were collected as the soil medium, and the adsorption effect of the river adsorption system on the feature pollutants ammonia nitroger was simulated. The adsorption thermodynamics and kinetics characteristics of each component in the feature pollutants were obtained, and the effects of temperature, pH value and other factors on ammonia nitrogen pollutants adsorption by the riverbed sediment in the study area were explored. The results show that ammonia nitrogen pollutants is released from the riverbed sediment in the study area at [0,10) mg/L, showing desorption characteristics, and that the riverbed sediment shows adsorption characteristics in the study area at [10,50) mg/L. In the oscillation time of [0,60] min, the adsorption capacity of ammonia nitrogen by the river sediment in the study area gradually increases with the increase of time, and it reaches equilibrium after 60 min. The adsorption thermodynamics and kinetics of ammonia nitrogen pollutants adsorption show that the adsorption of ammonia nitrogen the river sediment in the study area is in accordance with the Freundlich adsorption model and the first-order kinetic model. In the pH value range of [2,8], the adsorption capacity of ammonia nitrogen pollutants by the riverbed sediment in the study area increases with the increase of pH value. The maximum adsorption capacity of ammonia nitrogen pollutants by riverbed sediment in the study area decreases with the increase of temperature. This research could provide technical support for the treatment of black and odorous water bodies in river channels, and technical reference for the efficient control of ammonia and nitrogen in black and odorous river channels.
2024 Vol. 11 (3): 51-58 [
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34
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59
Geochemical characteristics and geological significance of Qingtashan rock mass in Qiemo County of Xinjiang
LI Shaowen, ZHOU Chuanfang, YANG Huaben, WANG Jiuyi, LIANG Zhongkai
DOI: 10.19388/j.zgdzdc.2024.03.08
Qingtashan rock mass is located in the western section of East Kunlun, and the formation age, environment and rock type of the rock mass are still controversial, with low research degree of the physicochemical conditions during the process of rock formation and its source characteristics. On the basis of systematic lithology and petrographic research, the authors in this paper conducted composition analysis on the main rock-forming minerals such as biotites, plagioclases and hornblendes. The physicochemical conditions during the process of rock formation were identified and petrogenesis of the rock was further constrained. This study shows that the lithology of Qingtashan rock mass is tonalites, and the lithology of the dike is quartz-diorites. The Plagioclase feldspar in the rock mass is andesine and labradorite, the biotite is magnesiobiotite, and the hornblende is magnesiohornblende. An anti-zoning band was developed in the plagioclase, which was caused by magma mixing. The crystallization temperature is 684~693 ℃ and the crystallization pressure is (1.86~2.01)×10
8
Pa, with average value of 1.92×10
8
Pa. The corresponding crystallization depth is 6.90~7.46 km, with an average of 7.12 km, belonging to the medium-deep formation phase. The oxygen fugitivity during rock mass formation is low, which is between -17.34 and -17.04. The mineral chemical characteristics show that the material source of the biotite in Qingtashan rock mass is calc-alkaline orogenic suite, and its formation is related to the crust-mantle mixed source magmatic. This study could provide references for the evolution of Late Triassic-Early Jurassic magma in this region.
2024 Vol. 11 (3): 59-67 [
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Spatio-temporal pattern and evolution characteristics of water source conser-vation capacity in the western part of Dabie Mountains from 1980 to 2018
HUANG Jinyan, LUO Minxuan, WU Kai, FU Jinhao, QIAO Qianglin, CHEN Min, OU Zewen
DOI: 10.19388/j.zgdzdc.2024.03.09
Dabie Mountains is an ecological barrier belt in the middle part of China, and it is an important water supply area for many rivers in the Yangtze River and Huai River systems. The investigation of water source conservation capacity in this area is of significant importance for ecosystem protection and restoration. The water production module from integrated evaluation of ecosystem services and tradeoffs (InVEST) model was selected to quantitatively evaluate the spatio-temporal pattern and evolution characteristics in the western part of Dabie Mountains. The results show that the actual annual average evapotranspiration are 664 mm, 642 mm, 653 mm, 600 mm and 619 mm for 1980, 1990, 2000, 2010 and 2018 respectively, and that the whole water production for these five years are 25.58 billion m
3
, 21.97 billion m
3
, 19.95 billion m
3
, 19.50 billion m
3
and 22.28 billion m
3
, the overall spatial trend is decreasing from southeast to northwest, with the aridity index of 0.502, 0.541, 0.569, 0.547 and 0.522 respectively, showing an opposite trend with water production spatial distribution. The temporal and spatial variation specificity is obvious in water source conservation capacity in this area. Besides the precipitation factor, the land usage change caused by human activities leads to the change of water circulation process, which further effect the water conservation capacity. The research results have important theoretical and practical values for ecosystem protection and restoration and ecosystem function regulation of important ecological function area in Dabie Mountains.
2024 Vol. 11 (3): 68-75 [
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76
Spatial distribution and migration mechanism of microplastics in the surface sediments of the southern Pearl River Estuary
WANG Guohuai, LIANG Hao, ZHAO Wei, ZHANG Xiaoyang
DOI: 10.19388/j.zgdzdc.2024.03.10
Microplastic pollution in the marine environment is a common global problem, and Pearl River Estuary is a typical area of marine microplastic pollution in China. In order to explore the spatial distribution and migration mechanism of microplastics in Pearl River Estuary, the authors processed and analyzed surface sediment samples from 55 stations in the southern Pearl River Estuary. And the microplastics in the samples were identified and counted. The research results are as follows. (1) The microplastics abundance in the study area varied in the range of 0~47.77 items/kg, with uneven spatial distribution, and it was enriched in the sea area from Modaomen to Daji Bay and from Xiangzhou Bay to Guishan Island. The microplastics abundance was at a low level compared with other waters in the South China Sea. (2) The sources of microplastics in the study area were mainly human activities on both sides of the river. Driven by the dual drive of tidal flow and runoff, the microplastics carried in the water body of the Modaomen channel were unloaded and accumulated in the sea area from Modaomen to Dajiwan Estuary. While the microplastics carried by the water body of the Pearl River Estuary were unloaded and accumulated in the sea area from Xiangzhou Bay to Guishan Island. The results of this study could provide some references for the study of environmental pollution in China's coastal waters, and also provide some data for monitoring microplastics in the marine resources in the southern areas of China.
2024 Vol. 11 (3): 76-82 [
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46
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83
Attribution analysis of annual average runoff depth variation in the upper reaches of the Bao River based on the Budyko hypothesis
WANG Jiangyulong, LIU Junjian, SHI Jingtao, WANG Guoqiang, ZHANG Junchao, WANG Yanliang, JIAGN Yuge, LI Hengfei, AN Hongyan
DOI: 10.19388/j.zgdzdc.2024.03.11
In recent years, the shortage of water resources in Beijing-Tianjin-Hebei region has an important impact on the ecological environment. In order to quantify the impact of human activities and climate change on water resources, the authors in this article conducted an attribution analysis of runoff changes in typical small watersheds in the northern mountainous areas of Beijing-Tianjin-Hebei water conservation area. Based on the data of precipitation, evaporation, and runoff in the upper reaches of the Bao River from 1981 to 2020 and the Mann Kendall method (M-K method), the baseline period was determined from 1981 to 2006 and the variation period was determined from 2007 to 2020. The results show that the annual average runoff depth during the variation period decreased 46.47 mm compared with the baseline period, accounting for 77.10% of runoff the total depth during the baseline period. Based on Rescaled Range Analysis (R/S), the future annual average runoff depth of the upper reaches in the Bao River was deduced to keep an opposite changing trend compared with the annual average runoff depth from 1981 to 2020, showing a stable increasing trend. Based on the Budyko hypothesis principle, the impact of climate change and human activities on the annual runoff depth in this region was quantitatively evaluated. The contribution rate of climate change to the runoff depth was 40.29%, and the contribution rate of human activities to the runoff depth was 59.71%. The impact of human activities on the runoff depth is mainly through changes in the land use type. A total of 30.28% of the land in the study area has undergone mutual transformation, with an increase of 67.61% in tree forests in 2020 compared to 1985, which greatly enhanced the water conservation capacity of the study area. The increase on vegetation coverage also reduces the potential evaporation. The research results could enhance the understanding of hydrological and water resources in the hilly areas of the northern Beijing-Tianjin-Hebei region, and provide some references for screening the driving factors of water source conservation function in Beijing-Tianjin-Hebei region.
2024 Vol. 11 (3): 83-91 [
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38
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Analysis on the influencing factors of geological disasters and causes of landslide in Yuanyang terraced fields based on geographical detectors
SU Hang, LU Nandi, FU Xiaoshuang, LI Qi
DOI: 10.19388/j.zgdzdc.2024.03.12
Due to its unique geographical location, surface vegetation, and agricultural culture, Yuanyang terraced fields have been frequently affected by surface geological disasters, causing great damage to their ecological and cultural value. Therefore, the prevention and control of geological disasters in the terraced areas is particularly crucial. On the basis of detailed field investigations, combined with 15 m resolution remote sensing image data from Yuanyang terraced fields, the authors conducted a detailed study on the factors affecting geological disasters in this area using ArcGIS spatial overlay analysis and geographic detectors. The results show that the amount of landslides accounts for 93.39% and the amount of small-scale disasters accounts for 87.69% in Yuanyang terrace fields. Overall, it is mainly characterized by small-scale disasters with landslide as the main type. The main influencing factors of geological disaster points in the study area are topographic slope, followed by geological structure and the geomorphic unit. The influencing factors of geological disasters are complex, and strong river erosion, crustal uplift, active fault tectonic activity are the main geological environment factors. Besides, abundant rainfall and human engineering activities are the main inducing factors. The influencing factors and causes of geological disasters in Yuanyang terraced fields were identified through this research, which could better promote improving the local disaster prevention and reduction system, and also provide certain references for regional geological disaster risk analysis, investigation and evaluation projects.
2024 Vol. 11 (3): 92-100 [
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46
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101
Analysis of the distribution law and main control factors of geological hazards: A case study of Ganluo County
TANG Yao, WANG Lijuan, LI Lisheng, JIN Xiao
DOI: 10.19388/j.zgdzdc.2024.03.13
Geological disasters occur frequently in Ganluo County, which seriously threatens the safety of local people's lives and property, and affects the harmonious development of the social economy. The geographical location, meteorology and hydrology, geological lithology, fault structures, and human engineering activities of Ganluo County were induced, and the spatial and temporal distribution of geological disasters were analyzed. And the main controlling factors of geological disasters were analyzed through Analytic Hierarchy Process and judgment matrix. The results show that in terms of time, the occurrence of disasters is concentrated from July to September each year (accounting for more than 90%), and is closely related to the rainy season rainfall. Spatially, it is mainly distributed along rivers and fault belts, and is consistent with the distribution of slip prone strata and highly overlapping with human engineering activity areas. The main controlling factors for geological disasters in the area are terrain, geomorphology, lithology and distance from fault. This research result could provide references for natural resources, emergency management and other departments in this area to formulate comprehensive management, monitoring and early warning and other natural disaster prevention and reduction decisions.
2024 Vol. 11 (3): 101-107 [
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Landslide susceptibility assessment in the southeastern Tibet based on weighted informativeness and weighted certainty factor
HUANG Yongfang, GUO Yonggang, HUANG Yanting
DOI: 10.19388/j.zgdzdc.2024.03.14
The southestern Tibet is a plateau region with steep mountains. The complex topography and geomorphology would easily induce geological disasters and increase the difficulty of engineering construction. In order to analyze the landslide susceptibility in this area, the authors in this paper selected eight evaluation factors as quantitative indexes, including distance from road, distance from water system, elevation, slope, slope direction, engineering geological rock group, soil type, and surface cover. The weighted value was determined by analytic nierardty process, and weighted informativeness model and weighted certainty factor (CF) were obtained by ArcGIS. Finally, the receiver operate curve was adopted to verify the accuracy of the results. The research vesullts are as follows (1) The AUC value of the weighted CF model is higher than the AUC value of the weighted informative ness model, and the covered landslide points from the weighted CF model the than those from the weighted informative ness model. So, the weighted CF model is more reliable in assessment of landslide susceptibility in this area. (2) The susceptibility zone is divided into high, relatively nigh, medium-high, relatively low, and low susceptibility zones by weighted CF model. The high susceptibility zone is mainly distributed in Mutuo and Gongjue counties, and relatively high susceptibility zone is distributed in Karuo and Mangkang counties. The medium-high susceptibility zone is distributed in Qiangwuqi, Dinching, and Janda counties, and the relatively low and low susceptibility zones are distributed in Bayi and Lang counties. The delineation of landslide-prone areas could provide some decision-making basis for the engineering construction in the region.
2024 Vol. 11 (3): 108-116 [
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117
Progress of shallow hydrate exploration and production test in Japan
ZHANG Wei, SHAO Mingjuan, WANG Haihua, YAO Shuqing
DOI: 10.19388/j.zgdzdc.2024.03.15
Compared to the marine pore-filling hydrates which have been extensively investigated and tested for gas production, the exploration and production test (EPT) of shallow hydrates with predominant component of seabed surface and near-seafloor sediments existea in near cold seeps, mud diapirs and mud volcanoes, has a long way to go. As one of the earliest countries to implement gas hydrate EPT, Japan has made significant progress in resource survey and evaluation of shallow hydrates, marine regional geological and environmental survey, development technology investigation and evaluation, and production system construction since fiscal year 2013. Based on the literature research, the authors in this paper summarized the development process of Japan's hydrate EPT and the overall deployment of shallow hydrate EPT, and introduce the main work cartied out by Japan in the fields related to the shallow hydrates EPT. The analysis shows that Japan's practical experience and theoretical understanding in the following four aspects are worthy of reference for the systematic deployment of shallow hydrate exploration and production test in China: regional resource and environmental survey centered on the Sea of Japan; resource evaluation demonstrations in a small-scale areas; refined resource and environmental surveys for optimizing production test sites; evaluation and establishment of the production system design principle of “based on the large-scale vertical mining method using a large-diameter drill bit, giving priority to the two key technologies of gas lift recovery method and shipboard separation method to form an optimal combination”.
2024 Vol. 11 (3): 117-126 [
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