Results 191 to 200 of about 24,090 (252)

Coalbed methane content prediction using deep belief network

Interpretation, 2020
Accurate measurement of coalbed methane (CBM) content is the foundation for CBM resource exploration and development. Machine-learning techniques can help address CBM content prediction tasks. Due to the small amount of actual measurement data and the shallow model structure, however, the results from traditional machine-learning models have errors to ...
Fan Peng, Suping Peng, Wenfeng Du, Hongshuan Liu   +3 more
openaire   +1 more source

Methane Recovery From Deep Coalbeds in the Book Cliffs

Proceedings of SPE Unconventional Gas Recovery Symposium, 1982
ABSTRACT A project jointly funded by Mountain Fuel Supply Company and the U.S. Department of Energy is being conducted to show the commercial potential of recovering methane gas from deep coal seams in the Book Cliffs coal field in Central Utah.
Larry D. Allred, Ralph L. Coates
openaire   +1 more source

A Method for Evaluating the Methane Content of the Nanoscale Pores in Deep Coalbeds

Journal of Nanoscience and Nanotechnology, 2021
Since the sampling depth is large in deep coalbed methane wells, during the lifting process of coalbed cores, the core surface pressure drops nonlinearly with time, which is contradictory to the premise of the conventional United States Bureau of Mines (USBM) method and the Smith-Williams method.
Yu, Yang, Chunhua, Guo, Wangang, Chen, Hansen, Sun, Ping, Yan, Xiang, Wu   +5 more
openaire   +2 more sources

Evaluation of a complex fracture network in deep coalbed methane reservoir considering natural fracture tensile and shear failure

The Physics of Fluids
Natural fractures develop in deep coalbed methane reservoirs, and the formation mechanism of complex fractures is still unclear. This paper establishes a finite element model of hydraulic fracture propagation in deep coalbed methane reservoirs containing
Dong Xiong, Jiayuan He
semanticscholar   +1 more source

Numerical Investigation of Vertical Hydraulic Fracture Propagation and Fracturing Parameter Optimization in Deep Coalbed Methane Reservoirs

Processes
Deep coalbed methane (CBM) reservoirs hold substantial resource potential and play a crucial role in China’s unconventional natural gas development.
Lianlian Qiao, Erhu Liu, Dong Sun, Qiaosen Dong, Linsheng Qiao, Xiaofang Bai, Zhaohuan Wang, Xu Su, Haiyang Wang, Desheng Zhou   +9 more
semanticscholar   +1 more source

Research on Wellbore Stability Prediction of Deep Coalbed Methane Under Multifactor Influences

Applied Sciences
To address the problem of wellbore instability in the development of deep coalbed methane reservoirs in Daniudi gas field, this study takes the coal seam cores from Member 1 of the Taiyuan Formation at a depth of approximately 2880 m as the research ...
Xugang Liu, B. Dang, Lei Li, Shuo Bai, Qiang Tan, Qinghua Sun   +5 more
semanticscholar   +1 more source

Simulation of Deep-Coalbed-Methane Permeability and Production Assuming Variable Pore-Volume Compressibility

Journal of Canadian Petroleum Technology, 2010
Summary One of the horizons of interest for future unconventional-resource development is deep- (> 5,000 ft) coalbed-methane (CBM) production. Unfortunately, coal permeability is highly sensitive to changes in stress, leading to the belief of limited permeability in deep coals.
R. R. Tonnsen, J. L. Miskimins
openaire   +1 more source

Application of Composite Drainage and Gas Production Synergy Technology in Deep Coalbed Methane Wells: A Case Study of the Jishen 15A Platform

Processes
The development of deep coalbed methane (CBM) wells faces challenges such as significant reservoir depth, low permeability, and severe liquid loading in the wellbore.
Longfei Sun, Donghai Li, Wei Qi, Li Hao, Anda Tang, Lin Yang, Kang Zhang, Yun Zhang   +7 more
semanticscholar   +1 more source

Study on the Semi-Interpenetrating Polymer Network Self-Degradable Gel Plugging Agent for Deep Coalbed Methane

Processes
Deep coalbed methane (CBM) reservoirs are characterized by high hydrocarbon content and are considered an important strategic resource. Due to their inherently low permeability and porosity, horizontal well drilling is commonly employed to enhance ...
Bo Wang, Zhanqi He, Jin Lin, Kang Ren, Zhengyan Zhao, Kaihe Lv, Yiting Liu, Jiafeng Jin   +7 more
semanticscholar   +1 more source

Low-rank coalbed methane production capacity prediction method based on time-series deep learning

Energy
Xiaoyi Wei, Wensong Huang, Lingli Liu, Jianjun Wang, Zehong Cui, Liang Xue   +5 more
openaire   +3 more sources