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Mining Engineering

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Articles 1981 - 2010 of 4560

Full-Text Articles in Engineering

Research Status And Prospects Of Secondary Enrichment And Accumulation Of Residual Coalbed Methane Resources In Abandoned Mines, Wang Jiachen, Yang Zhaobiao, Qin Yong, Yang Yanqun, Dong Zhiyong, Meng Xianghao Apr 2022

Research Status And Prospects Of Secondary Enrichment And Accumulation Of Residual Coalbed Methane Resources In Abandoned Mines, Wang Jiachen, Yang Zhaobiao, Qin Yong, Yang Yanqun, Dong Zhiyong, Meng Xianghao

Coal Geology & Exploration

In promoting the achievement of the carbon peak and carbon neutrality goals in China, the development of residual coalbed methane resources in abandoned mines is of important practical significance. However, the development of the residual coalbed methane is characterized by its secondary dynamic reservoir formation after disturbed under original geological conditions. Therefore, the related literature at home and abroad in recent years is summarized as follows. (1) The disturbed area of the overburden and floor in coal seam mining can be divided into the gas conduction fracture zone, pressure relief zone and non-desorption zone. The influence range of coal seam …

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Establishment Of A 3d Solid Model Blasting Rock Mass Based On Intelligent Lithology Identification, Chen Yingxian, Wang Pengfei Apr 2022

Establishment Of A 3d Solid Model Blasting Rock Mass Based On Intelligent Lithology Identification, Chen Yingxian, Wang Pengfei

Coal Geology & Exploration

With the development and application of intelligent drilling machine, the lithology data of blasting borehole can be obtained accurately. The blast-hole database is established to store and manage the intelligently identified blast-hole data. Taking the rock property data of blast hole as the sample, the inverse distance square method is used to interpolate the solid elements within the blasting area to generate the 3D solid model of blasting rock mass. The 3D solid model of rock mass was cut by using the polygon of blasting area and the triangular network of bench, and then the 3D solid model of blasting …

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Establishment And Application Of Four Basic Data Accounts For Coal Mine Water Control, Lyu Yuguang, Li Mingzhen, Hu Falun, Liu Shuang Apr 2022

Establishment And Application Of Four Basic Data Accounts For Coal Mine Water Control, Lyu Yuguang, Li Mingzhen, Hu Falun, Liu Shuang

Coal Geology & Exploration

Mine water inflow, aquifer water level, analysis data of water quality and formation information are closely related to water prevention and control. It takes a long time to collect a large amount of data. The relevant technical specifications clearly require the establishment of an account for data management, but there is no unified and practical account format, and detailed description of its purpose. Microsoft Excel is used to establish four basic data accounts of mine water inflow, aquifer water level, hydrochemistry and information on stratum. The format of the account is standardized, and the methods for data application of each …

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Formation Of Permafrost And Its Influence On Natural Gas Hydrate Accumulation In Muli Region, Qinghai Province, Wang Liping, Zhu Yinghao, Li Ning, Xu Shuanhai, Tian Yanzhe, Liu Naifei, Wang Wenli Apr 2022

Formation Of Permafrost And Its Influence On Natural Gas Hydrate Accumulation In Muli Region, Qinghai Province, Wang Liping, Zhu Yinghao, Li Ning, Xu Shuanhai, Tian Yanzhe, Liu Naifei, Wang Wenli

Coal Geology & Exploration

The characteristics of the existing permafrost and natural gas hydrates were summarized and analyzed by studying the natural gas hydrate formation in Muli Region, Qinghai Province. On the basis of the evidence of the Quaternary climate survey and the available geological exploration data on the Qinghai-Tibet Plateau, FLAC3D was used to simulate and calculate the formation of permafrost. The calculation results show that the existing permafrost probably formed during the late Holocene Neoglacial(4 000-3 000 to 1 000 a BP), and a stable boundary at bottom of the permafrost layer formed after about 170 a of cooling at a …

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Green Transformation Paths Of Closed Coalmine Industrtry In Coal Resources Cities, Zhang Lifeng, Wang Qiuju Apr 2022

Green Transformation Paths Of Closed Coalmine Industrtry In Coal Resources Cities, Zhang Lifeng, Wang Qiuju

Coal Geology & Exploration

With the implementation of China's energy supply-side structural reform and coal production capacity policy, the number of coal mines closed in China is increasing year by year, and how to transform the industry after the closure of coal mines has become an urgent problem. Most of the closed coal mines are concentrated in coal resource-based cities, and the development of closed coal mines is inseparable from the development of coal resource-based cities. The selection of their advantageous industries should be consistent with the direction of industrial transformation of the cities where they are located, so as to to make effective …

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Construction And Application Of Gas Resource Estimation And Evaluation Method In Abandoned Coal Mines, Liu Xiaolei, Yan Jiangwei, Liu Cao, Jia Tianrang, Feng Zhendong, Wei Jianping, Wei Guoying Apr 2022

Construction And Application Of Gas Resource Estimation And Evaluation Method In Abandoned Coal Mines, Liu Xiaolei, Yan Jiangwei, Liu Cao, Jia Tianrang, Feng Zhendong, Wei Jianping, Wei Guoying

Coal Geology & Exploration

On the basis of on the exploration and development status of gas resources in abandoned coal mines in China, the idea of “resource estimation + preliminary evaluation” was put forward to reasonably evaluate the gas resources in abandoned coal mines. The estimation and evaluation method of gas resources in abandoned coal mines was established, which has the advantages of less required parameters and strong practicability. According to the gas emission characteristics and abandoned time, the types of abandoned coal mines were divided into two categories: stable and unstable. Unstable coal mines were further divided into early, middle and late stages …

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Mineral Composition Characteristics And Petroleum Geological Significance Of Tight Sandstone Of Longtan Formation In Weixin Area, Eastern Yunnan, Xing Huitong, Zhang Xiaoli, He Jinxian, Cao Wenjie, Yang Tiantian, Wang Jian, Shi Shuai Apr 2022

Mineral Composition Characteristics And Petroleum Geological Significance Of Tight Sandstone Of Longtan Formation In Weixin Area, Eastern Yunnan, Xing Huitong, Zhang Xiaoli, He Jinxian, Cao Wenjie, Yang Tiantian, Wang Jian, Shi Shuai

Coal Geology & Exploration

Tight gas is an unconventional resource developed in low-porosity and ultra-low permeability sandstone and has rich potential oil and gas reserves. However, due to its tight and low permeability, fracturing is a necessary means for efficient development of tight gas. The reservoir characteristics and material composition of sandstone are of great significance to the preliminary evaluation of resource potential and production capacity of the dense sandstone reservoirs. By using X-ray diffraction, microscopy, scanning electron microscopy and other technical means, ten outcroppings of tight sandstone from coal measures of Permian Longtan Formation in Weixin area of eastern Yunnan Province were qualitatively …

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Characteristics Of Coal And Gas Outburst And Controlling Mechanism Of Stress Field In The Hanging Wall Of Normal Faults, Cao Yunxing, Zhang Haiyang, Zhang Zhen, Liu Gaofeng Apr 2022

Characteristics Of Coal And Gas Outburst And Controlling Mechanism Of Stress Field In The Hanging Wall Of Normal Faults, Cao Yunxing, Zhang Haiyang, Zhang Zhen, Liu Gaofeng

Coal Geology & Exploration

The fault zone is the main geological unit where coal and gas outbursts occur. Statistics of many coal and gas outbursts show that the number and intensity of the outbursts in the hanging wall are significantly greater than those in the foot wall for normal faults. However, there are few studies on the geological mechanism of this phenomenon, especially the variation of the in-situ stress field in the hanging wall of normal faults before and after mining, and its controlling mechanism of coal and gas outbursts that has not been completely demonstrated. In view of this, the normal fault DF …

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Propagation Characteristics Of Flame Wave And Shock Wave During The Gas Explosion In Complex Pipeline Network, Jia Jinzhang, Wang Dongming, Niu Xin, Li Bin, Zhu Jinchao, Wang Fengxiao Apr 2022

Propagation Characteristics Of Flame Wave And Shock Wave During The Gas Explosion In Complex Pipeline Network, Jia Jinzhang, Wang Dongming, Niu Xin, Li Bin, Zhu Jinchao, Wang Fengxiao

Coal Geology & Exploration

For the purpose of further exploring the flame wave propagation characteristics of the gas explosion shock wave, the gas explosion experiment was carried out in a complex pipe network designed and built by ourselves. In the experiment, a high precision pressure sensor and a temperature sensor were used to collect pressure changes and temperature peak data. By using the flame sensor to collect the flame wave signal in the process of explosion, the flame wave propagation velocity was calculated according to the theoretical formula, and the Origin software was used to comprehensively process the experimental data to study the shock …

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Construction And Application Of “Coal-Water-Environment” Coordinated Development Evaluation Index System：A Case Study Of Sihe Minefield, Wang Qingwei, Guo Biao, Song Mei, Yan Qiang Apr 2022

Construction And Application Of “Coal-Water-Environment” Coordinated Development Evaluation Index System：A Case Study Of Sihe Minefield, Wang Qingwei, Guo Biao, Song Mei, Yan Qiang

Coal Geology & Exploration

The scientific construction of the relationship among coal, water, and the environment is the basis of green coal development during the process of coal mining. This paper focus on the coal mining and protection of water resources and the ecological environment, and builds a green coordinated development evaluation index system by taking coal, water and environment into consideration. In this study, the methodology used is holistic and hierarchical principles of system theory. The selection of indicators considering resource factors, technological development and environmental concept progress are determined in accordance with the latest industry regulations, technical standards and local guiding planning. …

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Soil Fertility And Heavy Metal Risk Assessment In Jvhugeng Mining Area, Muli Coalfield, Qinghai Province, Wang Tong, Zhang Mei, Xu Hui, Zhang Guchun, Wang Yanjun, Fang Huiming, Li Yuan Apr 2022

Soil Fertility And Heavy Metal Risk Assessment In Jvhugeng Mining Area, Muli Coalfield, Qinghai Province, Wang Tong, Zhang Mei, Xu Hui, Zhang Guchun, Wang Yanjun, Fang Huiming, Li Yuan

Coal Geology & Exploration

The mining of coal resources at the Jvhugeng mining area, Muli Coalfield, has damaged the ecological environment of the mining area. Through the determination of soil fertility indexes and heavy metal indexes in the study area, soil fertility and heavy metal ecological risks are evaluated by the principal component analysis method and the potential ecological hazard index method. The results show that the soil in the mining area is alkaline as a whole, rich in organic matters, total nitrogen, and available potassium, but lacking in available phosphorus. It has the characteristics of being rich in nitrogen potassium and poor in …

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Directional Drilling Technology And Equipment For Gas Drainage In Large Panel Of Underground Coal Mines, Xu Chao, Jiang Lei, Chen Pan, Zhang Di Apr 2022

Directional Drilling Technology And Equipment For Gas Drainage In Large Panel Of Underground Coal Mines, Xu Chao, Jiang Lei, Chen Pan, Zhang Di

Coal Geology & Exploration

In recent years, with the progress of directional drilling technology and equipment in underground coal mines, a new model of advanced and comprehensive control of gas in the large panel of Baode Coal Mine is formed by covering the whole work with ultra-long directional drilling along the coal seam, hence the panel of the unexcavated roadway can be fully pre-pumped in advance to avoid gas overrun. As gas extraction in large panel requires a single construction along the coal seam borehole to run through the whole working face length, this paper starts from the construction technology of ultra-long directional drilling …

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Using Mycelium To Bioremediate Environments Damaged By Acid Mine Drainage, Michael Lazar, Jacquelyn Maddox Apr 2022

Using Mycelium To Bioremediate Environments Damaged By Acid Mine Drainage, Michael Lazar, Jacquelyn Maddox

Harrisburg University Research Symposium: Highlighting Research, Innovation, & Creativity

Acid mine drainage (AMD) is a major source of environmental contamination around areas that were once utilized by the mining industry, and does not have many pragmatic remediation solutions. Pleurotus ostreatus mycelium has been previously tested and shown to be able to biosorb a variety of heavy metals into its mycelial tissue. This project utilized P. ostreatus mycelium as a novel and natural approach to bioremediate acid mine drainage. There were two experiments: one proof-of-concept experiment and one situational experiment that used stream mesocosms. (Project II)

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Use Of Insar In Linear Discontinuous Ground Deformation Generation Analysis: Case Study Of A Mine In Poland, Bartosz Apanowicz Apr 2022

Use Of Insar In Linear Discontinuous Ground Deformation Generation Analysis: Case Study Of A Mine In Poland, Bartosz Apanowicz

Journal of Sustainable Mining

Linear Discontinuous Ground Deformations are defined as fissures and steps, as well as structural forms composed of them. They occur on the surface as a result of underground mining. Knowledge of LDGDs has been acquired through field observations which are subsequently described in the scientific publication. Records of LDGDs are made by using the classic surveying method. The paper reviews the created LDGDs in the years 2015–2019 in one of the mines of the USCB. The analysis covers the velocity of subsidence as a result of underground mining and the values of horizontal strains determined according to the Knothe-Budryk theory. …

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Sources Of Hydrothermal Fluids Inferred From Oxygen And Carbon Isotope Composition Of Calcite, Keweenaw Peninsula Native Copper District, Michigan, Usa, Thomas Bodden, Theodore J. Bornhorst, Florence Bégué, Chad Deering Apr 2022

Sources Of Hydrothermal Fluids Inferred From Oxygen And Carbon Isotope Composition Of Calcite, Keweenaw Peninsula Native Copper District, Michigan, Usa, Thomas Bodden, Theodore J. Bornhorst, Florence Bégué, Chad Deering

Michigan Tech Publications, Part 1

The Mesoproterozoic North American Midcontinent Rift hosts the world’s largest accu-mulation of native copper in Michigan’s Keweenaw Peninsula. During a regional metamorpho-genic‐hydrothermal event, native copper was deposited along with spatially zoned main‐stage minerals in a thermal high. This was followed by deposition of late‐stage minerals including minor copper sulfide. Inferences from the oxygen and carbon isotopic composition of main‐stage hydrothermal fluids, as calculated from 296 new and compiled isotopic measurements on calcite, are consistent with existing models that low‐sulfur saline native copper ore‐forming fluids were domi-nantly derived by burial metamorphic processes from the very low sulfur basalt‐dominated rift fill at …

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A New Stefan Equation To Characterize The Evolution Of Thermokarst Lake And Talik Geometry, Noriaki Ohara, Benjamin M. Jones, Andrew D. Parsekian, Kenneth M Hinkel, Katsu Yamatani, Mikhail Kanevskiy, Rodrigo C. Rangel, Amy L. Breen, Helena Bergstedt Apr 2022

A New Stefan Equation To Characterize The Evolution Of Thermokarst Lake And Talik Geometry, Noriaki Ohara, Benjamin M. Jones, Andrew D. Parsekian, Kenneth M Hinkel, Katsu Yamatani, Mikhail Kanevskiy, Rodrigo C. Rangel, Amy L. Breen, Helena Bergstedt

Michigan Tech Publications, Part 1

Thermokarst lake dynamics, which play an essential role in carbon release due to permafrost thaw, are affected by various geomorphological processes. In this study, we derive a three-dimensional (3D) Stefan equation to characterize talik geometry under a hypothetical thermokarst lake in the continuous permafrost region. Using the Euler equation in the calculus of variations, the lower bounds of the talik were determined as an extremum of the functional describing the phase boundary area with a fixed total talik volume. We demonstrate that the semi-ellipsoid geometry of the talik is optimal for minimizing the total permafrost thaw under the lake for …

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Low-Intensity Blast Induces Acute Glutamatergic Hyperexcitability In Mouse Hippocampus Leading To Long-Term Learning Deficits And Altered Expression Of Proteins Involved In Synaptic Plasticity And Serine Protease Inhibitors, Shanyan Chen, Heather R. Siedhoff, Hua Zhang, Pei Liu, Ashley Balderrama, Runting Li, Catherine E. Johnson, For Full List Of Authors, See Publisher's Website. Apr 2022

Low-Intensity Blast Induces Acute Glutamatergic Hyperexcitability In Mouse Hippocampus Leading To Long-Term Learning Deficits And Altered Expression Of Proteins Involved In Synaptic Plasticity And Serine Protease Inhibitors, Shanyan Chen, Heather R. Siedhoff, Hua Zhang, Pei Liu, Ashley Balderrama, Runting Li, Catherine E. Johnson, For Full List Of Authors, See Publisher's Website.

Mining Engineering Faculty Research & Creative Works

Neurocognitive consequences of blast-induced traumatic brain injury (bTBI) pose significant concerns for military service members and veterans with the majority of "invisible injury." However, the underlying mechanism of such mild bTBI by low-intensity blast (LIB) exposure for long-term cognitive and mental deficits remains elusive. Our previous studies have shown that mice exposed to LIB result in nanoscale ultrastructural abnormalities in the absence of gross or apparent cellular damage in the brain. Here we tested the hypothesis that glutamatergic hyperexcitability may contribute to long-term learning deficits. Using brain slice electrophysiological recordings, we found an increase in averaged frequencies with a burst …

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Synthesis And Stabilization Of Gold Nanoparticles From Chloride And Cyanide Systems, Kathryn Ariela Bozer Apr 2022

Synthesis And Stabilization Of Gold Nanoparticles From Chloride And Cyanide Systems, Kathryn Ariela Bozer

Graduate Theses & Non-Theses

Generating gold nanoparticles (AuNPs) from gold chloride solution by precipitating with compounds can be difficult due to the potentially required high temperatures. Tin chloride can be used to overcome this dilemma. The process that is known to make Purple of Cassius is a method where gold chloride and tin chloride solutions are mixed to form AuNPs and tin oxide precipitate. However, it is modified by adding hydrazine to resolubilize the tin oxide and provide a more stable solution for the AuNPs. A three-factor central composite experimentally designed model was created using Design Expert incorporating pH, temperature, and gold concentration as …

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A Study Of The Integration Of Environment, Social, And Governance Policy In The Mining Industry, Ryan Isto Apr 2022

A Study Of The Integration Of Environment, Social, And Governance Policy In The Mining Industry, Ryan Isto

Graduate Theses & Non-Theses

In a push to reach more responsible and sustainable business practices, extractive resource industries like the mining and oil industry have faced increasing pressures to update their policies to reflect the global trend of improving environmental and social responsibility. Industries have adopted numerous corporate social responsibility (CSR) frameworks to shape policies to improve sustainability, mitigate risk, and increase marketability. A CSR that has become increasingly relevant within the mining industry is the use of environmental, social, and governance (ESG) to influence sustainability policy. Mining companies have adopted ESG as a method to influence their corporate policy to manage public relations, …

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Remote Sensing For Energy Resources: Introduction, K. S. Sajinkumar, Thomas Oommen Apr 2022

Remote Sensing For Energy Resources: Introduction, K. S. Sajinkumar, Thomas Oommen

Michigan Tech Publications, Part 1

No abstract provided.

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Low-Intensity Blast Induces Acute Glutamatergic Hyperexcitability In Mouse Hippocampus Leading To Long-Term Learning Deficits And Altered Expression Of Proteins Involved In Synaptic Plasticity And Serine Protease Inhibitors, Shanyan Chen, Heather R. Siedhoff, Hua Zhang, Pei Liu, Ashley Balderrama, Runting Li, Catherine E. Johnson, C. Michael Greenlief, Bastijn Koopmans, Timothy Hoffman, Ralph G. Depalma, De Pei Li, Jiankun Cui, Zezong Gu Apr 2022

Low-Intensity Blast Induces Acute Glutamatergic Hyperexcitability In Mouse Hippocampus Leading To Long-Term Learning Deficits And Altered Expression Of Proteins Involved In Synaptic Plasticity And Serine Protease Inhibitors, Shanyan Chen, Heather R. Siedhoff, Hua Zhang, Pei Liu, Ashley Balderrama, Runting Li, Catherine E. Johnson, C. Michael Greenlief, Bastijn Koopmans, Timothy Hoffman, Ralph G. Depalma, De Pei Li, Jiankun Cui, Zezong Gu

Mining Engineering Faculty Research & Creative Works

Neurocognitive consequences of blast-induced traumatic brain injury (bTBI) pose significant concerns for military service members and veterans with the majority of "invisible injury." However, the underlying mechanism of such mild bTBI by low-intensity blast (LIB) exposure for long-term cognitive and mental deficits remains elusive. Our previous studies have shown that mice exposed to LIB result in nanoscale ultrastructural abnormalities in the absence of gross or apparent cellular damage in the brain. Here we tested the hypothesis that glutamatergic hyperexcitability may contribute to long-term learning deficits. Using brain slice electrophysiological recordings, we found an increase in averaged frequencies with a burst …

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Meteorite Impact Craters As Hotspots For Mineral Resources And Energy Fuels: A Global Review, S. James, Saranya R. Chandran, M. Santosh, A. P. Pradeepkumar, M. N. Praveen, K. S. Sajinkumar Apr 2022

Meteorite Impact Craters As Hotspots For Mineral Resources And Energy Fuels: A Global Review, S. James, Saranya R. Chandran, M. Santosh, A. P. Pradeepkumar, M. N. Praveen, K. S. Sajinkumar

Michigan Tech Publications, Part 1

The ever-increasing recovery rate of natural resources from terrestrial impact craters over the last few decades across the globe offers new avenues for further exploration of mineral and hydrocarbon resources in such settings. As of today, 60 of the 208 terrestrial craters have been identified to host diverse resources such as hydrocarbons, metals and construction materials. The potential of craters as plausible resource contributors to the energy sector is therefore, worthy of consideration, as 42 (70%) of the 60 craters host energy resources such as oil, gas, coal, uranium, mercury, critical and major minerals as well as hydropower resources. Among …

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Insar As A Tool For Monitoring Hydropower Projects: A Review, J. Aswathi, R. B. Binoj Kumar, Thomas Oommen, E. H. Bouali, K. S. Sajinkumar Apr 2022

Insar As A Tool For Monitoring Hydropower Projects: A Review, J. Aswathi, R. B. Binoj Kumar, Thomas Oommen, E. H. Bouali, K. S. Sajinkumar

Michigan Tech Publications, Part 1

This paper provides a review of using Interferometric Synthetic Aperture Radar (InSAR), a microwave remote sensing technique, for deformation monitoring of hydroelectric power projects, a critical infrastructure that requires consistent and reliable monitoring. Almost all major dams around the world were built for the generation of hydropower. InSAR can enhance dam safety by providing timely settlement measurements at high spatial-resolution. This paper provides a holistic view of different InSAR deformation monitoring techniques such as Differential Synthetic Aperture Radar Interferometry (DInSAR), Ground-Based Synthetic Aperture Radar (GBInSAR), Persistent Scatterer Interferometric Synthetic Aperture Radar (PSInSAR), Multi-Temporal Interferometric Synthetic Aperture Radar (MTInSAR), Quasi-Persistent Scatterer …

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“La Ultra Periferia De Un País Periférico”: La Política Estratégica Litífera En Jujuy: Los Objetivos, Los Instrumentos, Y Los Desafíos / The Ultra Periphery Of A Periphery Country: The Strategic Policy Towards Lithium In Jujuy: The Objectives, The Instruments, And The Challenges, Max Kaye Apr 2022

“La Ultra Periferia De Un País Periférico”: La Política Estratégica Litífera En Jujuy: Los Objetivos, Los Instrumentos, Y Los Desafíos / The Ultra Periphery Of A Periphery Country: The Strategic Policy Towards Lithium In Jujuy: The Objectives, The Instruments, And The Challenges, Max Kaye

Independent Study Project (ISP) Collection

La transición energética hizo cobrar nueva importancia a los yacimientos metalíferos y no metalíferos y generó un nuevo patrón de demanda, especialmente para el caso del litio. Los actores importantes en la cadena de valor de las baterías de ion-litio intensificaron su control sobre cada etapa de sus negocios, y las políticas de los países abundantes en litio son cruciales para determinar cómo afecta a sus territorios esta carrera por el litio. Jujuy, una provincia que podría considerarse periférica de la Argentina, declaró el litio como un recurso estratégico en 2011. La provincia creó ciertos instrumentos para ejercer mayor control …

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Date-Leaf Carbon Particles For Green Enhanced Oil Recovery, Bashirul Haq, Md Abdul Aziz, Dhafer Al Shehri, Nasiru Salahu Muhammed, Shaik Inayath Basha, Abbas Saeed Hakeem, Mohammed Ameen Ahmed Qasem, Mohammed Lardhi, Stefan Iglauer Apr 2022

Date-Leaf Carbon Particles For Green Enhanced Oil Recovery, Bashirul Haq, Md Abdul Aziz, Dhafer Al Shehri, Nasiru Salahu Muhammed, Shaik Inayath Basha, Abbas Saeed Hakeem, Mohammed Ameen Ahmed Qasem, Mohammed Lardhi, Stefan Iglauer

Research outputs 2022 to 2026

Green enhanced oil recovery (GEOR) is an environmentally friendly enhanced oil recovery (EOR) process involving the injection of green fluids to improve macroscopic and microscopic sweep efficiencies while boosting tertiary oil production. Carbon nanomaterials such as graphene, carbon nanotube (CNT), and carbon dots have gained interest for their superior ability to increase oil recovery. These particles have been successfully tested in EOR, although they are expensive and do not extend to GEOR. In addition, the application of carbon particles in the GEOR method is not well understood yet, requiring thorough documentation. The goals of this work are to develop carbon …

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Aerial Radiation Detection Identification And Measurement System Detector Material Comparison Study, Benjamin C. Troxell, Kacey D. Mcgee, Christina L. Dugan Apr 2022

Aerial Radiation Detection Identification And Measurement System Detector Material Comparison Study, Benjamin C. Troxell, Kacey D. Mcgee, Christina L. Dugan

Faculty Publications

The 20th Chemical Biological Radiological Nuclear and Explosives Command (CBRNE) currently utilizes an airborne sodium iodide gamma and beta detection system to map radiation fields over large areas of interest. The 20th CBRNE explored emergent detector technologies utilizing two detection materials; thallium-activated cesium iodide and high purity germanium (HPGe). These detectors were simulated at various altitudes and compared to background measurements. The sodium iodide detector failed to provide isotopic discrimination at distance. The thallium-activated cesium iodide CsI(Tl) detector provided sufficient absolute efficiency and energy resolution to identify isotopics at distance. The HPGe detector provided the best energy resolution. However, current …

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Table Of Contents, The Editors Mar 2022

Table Of Contents, The Editors

Coal Geology & Exploration

No abstract provided.

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Research Progress And Development Direction Of Key Technologies For Efficient Coalbed Methane Development In China, Xu Fengyin, Yan Xia, Lin Zhenpan, Li Shuguang, Xiong Xianyue, Yan Detian, Wang Hongya, Zhang Shuangyuan, Xu Borui, Ma Xinyuan, Bai Nan, Mei Yonggui Mar 2022

Research Progress And Development Direction Of Key Technologies For Efficient Coalbed Methane Development In China, Xu Fengyin, Yan Xia, Lin Zhenpan, Li Shuguang, Xiong Xianyue, Yan Detian, Wang Hongya, Zhang Shuangyuan, Xu Borui, Ma Xinyuan, Bai Nan, Mei Yonggui

Coal Geology & Exploration

During the 13th Five Year Plan period, the major problem of the low output of a single well of coalbed methane (CBM) has restricted the efficient development of CBM in China. Through Major National Science and Technology Projects and other technical researches, significant progress has been made in the theoretical understanding and engineering technology of CBM exploration and development. It is manifested in four aspects as follows. Firstly, the exploration concept has changed from looking for rich dessert areas to high-yield dessert areas, and the extensive development deployment has become finer. Secondly, in terms of efficient stimulation technology, with the …

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Development Status And Thoughts On Coalbed Methane Industry In Xinjiang, Li Ruiming, Zhou Zixin Mar 2022

Development Status And Thoughts On Coalbed Methane Industry In Xinjiang, Li Ruiming, Zhou Zixin

Coal Geology & Exploration

After nearly 10 years of rapid development, great breakthroughs have been made in the exploration and development of coalbed methane(CBM) in Xinjiang Uygur Autonomous Region, China. The theory and drilling pressure drainage technology system of CBM exploration and development applicable to the geological characteristics of Xinjiang have been further clarified and improved, and a number of pilot test projects for ground CBM development have been built, realizing small-scale commercial development and utilization. On the basis of the analysis of resource potential, gas production effect and market demand, the development and utilization of CBM in Xinjiang has the following advantages. First, …

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Exploration And Development Process Of Coalbed Methane In Eastern Margin Of Ordos Basin And Its Enlightenment, Yang Xiuchun, Xu Fengyin, Wang Hongya, Li Shuguang, Lin Wenji, Wang Wei, Hao Shuai Mar 2022

Exploration And Development Process Of Coalbed Methane In Eastern Margin Of Ordos Basin And Its Enlightenment, Yang Xiuchun, Xu Fengyin, Wang Hongya, Li Shuguang, Lin Wenji, Wang Wei, Hao Shuai

Coal Geology & Exploration

The buried depth of coal seam in the eastern margin of Ordos Basin changes greatly, and the characteristics of coalbed methane reservoir formation and reservoir reconstruction methods vary greatly with different buried depths. At present, coalbed methane exploration gradually extends from a shallow area of 1 000 m to a deeper area of 2 000 m. To study the theory and technology of efficient exploration and development of coalbed methane resources under different burial depths, this paper reviews the exploration and development practices in the eastern margin of Ordos Basin in the past 30 years. According to the changes of …

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