Results 71 to 80 of about 1,653 (179)

Structural control on productivity of deep coalbed methane wells

Youqicang pingjia yu kaifa, 2021
The southern Yanchuan Block is a deep, high-rank coal-bed methane reservoir with large buried depth at 800~1 500 m, meagre coal or anthracite, and good gas content at 12 m3/t.
LI Xin
doaj  

Damage evolution and fracture characteristics of coal rock impacted by self‐excited pulse water jet under different stress loading conditions

Energy Science &Engineering, Volume 12, Issue 9, Page 3743-3763, September 2024.
Numerical simulation model of SEPWJ impacting coal rock under stress loading conditions (H and W are the length and width of coal rock specimen used in the numerical simulation, respectively; σx and σy are the horizontal and vertical stresses applying on coal rock specimen, respectively; dp and dn are the plunger diameter and nozzle outlet diameter ...
Hongyu Ma, Wen Wan, Dongfang Xu, Pengtao Zhao, Jiaokun Wu, Yong Chen, Yao Wang   +6 more
wiley   +1 more source

Factual Causation: The Missing Link in Hydraulic Fracture—Groundwater Contamination Litigation [PDF]

, 2012
A speech-based material that early can assess a child's hearing is needed to provide an indication of a hearing impaired child's language development.
King, Jeffrey C., Bryan, Jamie Lavergne, Clark, Meredith   +2 more
core   +2 more sources

Factors influencing productivity and production system optimization for deep coalbed methane in the Daning-Jixian block, Ordos Basin

Meitian dizhi yu kantan
ObjectiveDeep coalbed methane (CBM) reservoirs are characterized by ultra-low porosity, ultra-low permeability, and super saturation, rendering it impractical to copy the productivity models of shallow coalbed methane and shale gas.
Haifeng ZHAO, Zhaojie JIA, Mengqi CHEN, Ziyi YANG, Bin WANG, Hongliang LIN, Yanfeng YANG   +6 more
doaj   +1 more source

Economic impacts and framework conditions for potential unconventional gas and oil extraction in the EU: Case studies of Germany and Poland [PDF]

, 2016
This study assesses the potential economic impacts of unconventional hydrocarbon investment projects in two European countries: Poland and Germany. The analysis carries out a profitability assessment of the investments, the potential job creation in the ...
GODEC Mike, SPISTO AMANDA
core   +1 more source

History and development direction of iterative upgrading of deep coalbed methane reservoir reconstruction technology：Taking the Daji Block in the eastern margin of the Ordos Basin as an example

Meitan kexue jishu
In 2019, PetroChina’s Coalbed Methane (CBM) Company achieved a groundbreaking breakthrough in the profitable development of deep coalbed methane reservoirs.
Fengyin XU, Huaibin ZHEN, Shuguang LI, Feng WANG, Lei ZHANG, Yubin WANG, Weichu YU, Weiping ZHU, Borui XU, Yun YANG, Haifeng ZHAO, Kunsen BAI   +11 more
doaj   +1 more source

Development of a quantitative assessment approach for the coal and gas outbursts in coal mines using rock engineering systems [PDF]

, 2017
In this study, a new approach is proposed and developed for evaluating the comprehensive outburst index (range between 0 and 100), which is a quantitative assessment approach and will enable us to better understand the risk degree of coal and gas ...
Herrera Herbert, Juan, Hidalgo López, Arturo, Zhou, Qinglong   +2 more
core   +2 more sources

Balancing Hydraulic Fracturing’s Environmental and Economic Impacts: The Need for a Comprehensive Federal Baseline and the Provision of Local Rights [PDF]

, 2013
Reliable evaluation methods is needed to ensure that investments in energy conservation measures (ECMs) and the construction of new energy efficient buildings lives up to the promised and expected performance.
Garmezy, Adam
core   +2 more sources

GIS based site ranking using neighbourhood analysis and comparison [PDF]

, 2014
This paper presents a Geographical Information Systems (GIS)-based toolkit, developed for site comparison and ranking that can be used to facilitate the decision making process in second stage of the site selection process. The toolkit has been developed
Irfan, Muhammad, Koj, Aleksandra, Sedighi, Majid, Thomas, Hywel   +3 more
core  

Controlling Factors of Gas Content in Coal Reservoirs of Block 105, Mabi Area, Southern Qinshui Basin

Energies
The Mabi Block is located in the southern Qinshui Basin, representing an underexplored region with high-rank coal seams that host significant Coalbed Methane (CBM) potential.
Ahmad Jalal, Dameng Liu, Yidong Cai, Xiaoxiao Sun, Fengrui Sun, Rohul Amin, Jan Jawad Ahmed   +6 more
doaj   +1 more source