Development Of Data Acquisition And Control Software For Seismic Monitoring With Mining,
2019
Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China
Development Of Data Acquisition And Control Software For Seismic Monitoring With Mining, Duan Jianhua, Wang Yunhong, Wang Baoli
Coal Geology & Exploration
Seismic monitoring with mining can continuously detect and real-time predict geological anomalies in front of work, it has become a research hotspot in recent years, but at present, there is no equipment that can carry out seismic monitoring with mining in coal mine.Therefore, the development of seismic monitoring equipment with mining has become a top priority. In order to solve this problem, based on the MFC development framework, a set of seismic monitoring data acquisition software is developed. A three-month joint survey was carried out indoors and outdoors, and a three-month comprehensive trial operation was carried out in Yanjiao Coal …
Productivity Prediction Of Hypotonic Cbm Test Well In Jiaozuo Mining Area Under Hydraulic Fracturing,
2019
College of Environmental and Hydraulic Engineering, Zhengzhou University, Zhengzhou 450001, China
Productivity Prediction Of Hypotonic Cbm Test Well In Jiaozuo Mining Area Under Hydraulic Fracturing, Wang Zhirong, Yang Jie, Chen Lingxia, Guo Zhiwei
Coal Geology & Exploration
In order to explore the permeable mechanism and the output law after fracturing of CBM in the "three soft" coal seam(soft coal, soft roof and soft bottom) of Jiaozuo under hydraulic fracturing, Based on the permeable model of reservoir fracture, considering the influence of fracture porosity on permeability after fracturing, a reservoir fracture penetration model was established, the application and analysis of the test well was carried out to obtain the characteristics of pressure cracks such as length, width, permeability and reservoir parameters after fracturing. Through the comprehensive analysis of isothermal adsorption curves and historical fitting, the recovery rate of …
Genesis And Geochemical Characteristics Of Coalbed Methane From Taiyuan Formation In Sijiazhuang Mine Field Of Yangquan Mining Area,
2019
Shanxi Lanyan CBM Group Co., Ltd, Jincheng 048204, China
Genesis And Geochemical Characteristics Of Coalbed Methane From Taiyuan Formation In Sijiazhuang Mine Field Of Yangquan Mining Area, Yu Zhenfeng, Hao Chunsheng, Yang Changyong, Yao Jinbao, Wang Wei, Ji Changjiang
Coal Geology & Exploration
In order to study the geochemical characteristics and the genesis of CBM of Sijiazhuang mine field in Yangquan mining area, the in-site desorption test of coal core samples from the main gas-producing seams(seams 8, 9 and 15) from Permo-Carboniferous Taiyuan Formation was carried out systematically, gas samples were collected to conduct component and carbon isotope analysis. The results indicated that the gas content of seam 8 was higher than that of seam 9, on the plan the gas content of seam 15 was uneven, in some parts there was almost no gas. During the whole desorption, the gas component content …
The Matching Of Gas Production Curve Characteristic And Reservoir Conditions In Vertical Coalbed Methane Wells,
2019
School of Geoscience and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China
The Matching Of Gas Production Curve Characteristic And Reservoir Conditions In Vertical Coalbed Methane Wells, Han Wenlong, Wang Yanbin, Liu Du, Chang Hong, Ding Tao
Coal Geology & Exploration
The matching of coalbed methane(CBM) production curve type and geological conditions directly affects the gas production. Based on dividing gas production curves types of vertical CBM wells in the southern block of Shizhuang in Qinshui basin over 4 years, the characteristics of gas production curve were analyzed. The matching of gas production curve with reservoir parameters was further analyzed. The paper discovered and divided the gas production curve into four types:type of fast rising of single peak, type of stable rising of single peak, bimodal type of being low later and bimodal type of being high later. The original permeability, …
Application Of Sec Dynamic Reserves Evaluation Method In Coalbed Methane Field: A Case From Hancheng Block In Ordos Basin,
2019
Petrochina Coalbed Methane Company Limited, Beijing 100028, China
Application Of Sec Dynamic Reserves Evaluation Method In Coalbed Methane Field: A Case From Hancheng Block In Ordos Basin, Yi Wei, Xiong Xianyue, Cao Yimin, Ding Rong
Coal Geology & Exploration
At present, all the SEC reserves evaluation of coalbed methane fields uses dynamic assessment methods. In the process of evaluation, the parameters and calculation results are various. In order to solve this problem, this paper takes the Hancheng block in Ordos basin as an example, a series of evaluation methods adapted to the production characteristics of coalbed methane have been comprehensively applied, optimizing various parameters, and summarizing the law of decline. The results show that geological units are divided according to tectonic conditions, and on this basis, evaluation units are divided according to development effect, which can objectively and reasonably …
Prediction Of The Height Of Water Flowing Fractured Zone Under Subcritical Mining Based On Dimensional Analysis,
2019
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Prediction Of The Height Of Water Flowing Fractured Zone Under Subcritical Mining Based On Dimensional Analysis, Lou Gaozhong, Guo Wenbing, Gao Jinlong
Coal Geology & Exploration
In order to accurately predict the height of water flowing fractured zone under subcritical mining, mining thickness M, mining depth H, inclined length of working face L, dip angle of coal seam α, overburden mechanical properties R, overburden structure characteristics S were selected as the main influencing factors on the height of water flowing fractured zone under subcritical mining. Dimensionless relations between the height of water flowing fractured zone and M, H, L, α, S were established by dimensional analysis. Based on 30 sets of measured data, the optimal function relation of dimensionless relation was …
Ga_Svm_Adaboost Model For Prediction Of Earthquake-Induced Sandy Soil Liquefaction,
2019
System Engineering Institute, Liaoning Technical University, Huludao 125105, China
Ga_Svm_Adaboost Model For Prediction Of Earthquake-Induced Sandy Soil Liquefaction, Mao Zhiyong, Huang Chunjuan, Lu Shichang
Coal Geology & Exploration
In order to predict the liquefaction of sand, the seismic intensity, groundwater level, covering thickness, standard number, average particle size, landform, soil quality and inhomogeneity coefficient are selected as influencing factors. Genetic algorithm(GA) is used to optimize the parameters of support vector machine(SVM) by using correlation analysis and factor analysis model, and combining with Adaboost iterative algorithm, the GA_SVM_Adaboost model for predicting the liquefaction of sand is established. 329 sets of survey data of sandy liquefaction site in Tangshan earthquake were used to train the model, and 68 samples of sandy liquefaction data were predicted by using the good model. …
Development Of High Temperature Borehole Inclinometer,
2019
School of Information Engineering, Sichuan Tourism University, Chengdu 610100, China
Development Of High Temperature Borehole Inclinometer, Qu Zhaogui, Gong Mingmao, Zhou Ce, Wang Guangzhai
Coal Geology & Exploration
In the detection of high-temperature and high-pressure dry heat rock drilling location trajectory, the instrument has some problems, such as poor performance, poor stability, low measurement accuracy and large energy consumption. A set of high temperature borehole inclining device is designed to solve the problem of high temperature and high pressure measurement deviation and temperature measurement. Adopt high temperature resistant components, design control and measurement circuit. Automatic intermittent power supply is adopted to reduce heat dissipation and power consumption. The design of heat preservation pipe and pressure detection pipe is carried out by using ANSYS finite element software to conduct …
Experimental Study On The Influence Of Well Inclination Angle Of Coalbed Methane Well On The Cementation Strength Of Cement-Formation Interface,
2019
Faculty of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, China
Experimental Study On The Influence Of Well Inclination Angle Of Coalbed Methane Well On The Cementation Strength Of Cement-Formation Interface, Gu Jun, Li Linwei, Sun Dexing
Coal Geology & Exploration
In order to control the problem of water channeling in the process of coalbed methane(CBM) production, based on the self-designed test device and method, the test data of the shear strength at cement-aquiclude interface (CAI) is obtained under the conditions of well inclination of 0°, 30°, 60° and 90°. The mechanism of the influence of inclination angle on the shear strength at CAI is analyzed. The results show that the shear strength at CAI decreases with the increase of the inclination angle. The reason is that as the inclination angle increases, the upper part of the mud cake ring becomes …
Application Of Wire Line Coring Technique In Overburden Drilling,
2019
Research Institute No. 240, CNNC, Shenyang 110032, China
Application Of Wire Line Coring Technique In Overburden Drilling, Li Baijun, Zou Run, Guo Chao
Coal Geology & Exploration
In order to improve the drilling efficiency of two oil and gas geological survey wells "Jitaodi 1" and "Ji Bai Di 1" in Baicheng area of Jilin Province, wireline coring technique was applied in overburden drilling. Based on the lithological characteristics of the drilled strata, combined with the technological characteristics of core extraction by lifting the drill pipe and wireline core extraction, by designing the bit, drilling flushing fluid and by improving drilling procedure parameters, drilling tool nozzle flow channel, the wireline coring drilling method has been successfully applied in drilling overburden strata(about 1 100 m thick). Compare with the …
Using Numerical Models Of Dewatering At Coal Ash Impoundments To Understand Cost And Schedule,
2019
University of Kentucky
Using Numerical Models Of Dewatering At Coal Ash Impoundments To Understand Cost And Schedule, Peter Bell, Joel Thompson, Don Fuller
World of Coal Ash Proceedings
No abstract provided.
Investigating Ccr Units And Evaluating The Physical Properties Of Ponded Ccr,
2019
University of Kentucky
Investigating Ccr Units And Evaluating The Physical Properties Of Ponded Ccr, David Skeggs, Zahra Aghazadeh, Rachel Combs
World of Coal Ash Proceedings
No abstract provided.
Demonstration Of “No Migration” Alternative Performance Standard For Ccr Facilities In Arid To Semi- Arid Regions Using Unsaturated Zone Modeling,
2019
University of Kentucky
Demonstration Of “No Migration” Alternative Performance Standard For Ccr Facilities In Arid To Semi- Arid Regions Using Unsaturated Zone Modeling, James Aiken, Katy Lindstom
World of Coal Ash Proceedings
No abstract provided.
Coal Combustion Residuals Management Using Geotextile Containers- Considerations For Various Options,
2019
University of Kentucky
Coal Combustion Residuals Management Using Geotextile Containers- Considerations For Various Options, Randall Wilcox, Gregg Lebster, Bryan Hamilton, Thomas Stephens
World of Coal Ash Proceedings
No abstract provided.
State Vs Federal Ccr Rule Regulations: Comparisons And Impacts,
2019
University of Kentucky
State Vs Federal Ccr Rule Regulations: Comparisons And Impacts, Nicole Kron, Eric Nelson
World of Coal Ash Proceedings
No abstract provided.
Continuous, Real-Time Tss Monitoring Verifies Effluent Quality And Coal Ash Management Performance While Reducing Compliance Costs,
2019
University of Kentucky
Continuous, Real-Time Tss Monitoring Verifies Effluent Quality And Coal Ash Management Performance While Reducing Compliance Costs, Dave Fraley, Chris Bauman, Dave Donahue
World of Coal Ash Proceedings
No abstract provided.
Effect Of Coal Fly Ash On Agricultural Crops :Second Phase Showcase Project On Use Of Fly Ash In Agriculture In And Around Thermal Power Station Areas Of National
Thermal Power Corporation Ltd., India.,
2019
University of Kentucky
Effect Of Coal Fly Ash On Agricultural Crops :Second Phase Showcase Project On Use Of Fly Ash In Agriculture In And Around Thermal Power Station Areas Of National Thermal Power Corporation Ltd., India., K. Arivazhagan, M. Ravichandran, S.K. Dube, V.K. Mathur
World of Coal Ash Proceedings
No abstract provided.
Advantages Of Single Source Contracting In-Plant Ccr Services,
2019
University of Kentucky
Advantages Of Single Source Contracting In-Plant Ccr Services, Kevin Foody, Marcella Funderburg, Blake Whittington
World of Coal Ash Proceedings
No abstract provided.
Design And Construction Of A Ccr Landfill Adjacent To The Missouri River,
2019
University of Kentucky
Design And Construction Of A Ccr Landfill Adjacent To The Missouri River, Thomas Gredell, Jeffrey Fouse, Jay Ellington
World of Coal Ash Proceedings
No abstract provided.
Geochemical Tools For Groundwater Monitoring At Coal Fired Utilities,
2019
University of Kentucky
Geochemical Tools For Groundwater Monitoring At Coal Fired Utilities, Jeff Gillow, Bruce Sass, Hari Parthasarathy
World of Coal Ash Proceedings
No abstract provided.
