Results 81 to 90 of about 4,911 (260)

Five unconventional fuels: geology and environment [PDF]

open access: yes, 2014
Unconventional fuels may present a viable partial replacement for conventional fossil fuel reservoirs (such as sandstone and limestone) in rocks onshore and offshore.
Stephenson, Michael H.
core  

Pore Structure of Tight Sandstones With Different Sedimentary Microfacies in the Chang 6–Chang 9 Layers, Triassic Yanchang Formation, Wuqi Area, Ordos Basin

open access: yesEnergy Science &Engineering, Volume 13, Issue 10, Page 4900-4916, October 2025.
Taking the Chang 6–Chang 9 layers in the Wuqi area of the Ordos Basin as a case study, this study investigates the pore characteristics of tight sandstones formed under different sedimentary microfacies. The results indicate that tight sandstones associated with distinct sedimentary microfacies exhibit significant variations in pore types, pore size ...
Liling Zhang   +7 more
wiley   +1 more source

Drainage system research and application of deep coalbed methane gas reservoirs in Daning-Jixian block

open access: yesMeitan xuebao
Compared to Medium-shallow coalbed methane, deep coalbed methane exhibits significant differences in occurrence state, production mechanism, lifting technology, etc.As an important part of coalbed methane development, drainage directly impact the gas ...
Ming CHEN   +9 more
doaj   +1 more source

Application and discussion of geological guidance technology for deep coalbed methane horizontal wells: A case study of block X in Shenmu gas field, Ordos Basin [PDF]

open access: yesYouqicang pingjia yu kaifa
The Ordos Basin is rich in deep coalbed methane resources, with block X of the Shenmu gas field being a key exploration and development area for the Jidong Oilfield in the basin.
LIN Weiqiang, CONG Peng, WANG Hong, WEI Zichen, YANG Yuntian, YAO Zhiqiang, QU Lili, MA Limin, WANG Fanglu
doaj   +1 more source

A Rapid Method for the Determination of Coal Seam Gas Pressure Based on Raw Coal Adsorption

open access: yesEnergy Science &Engineering, Volume 13, Issue 10, Page 4660-4673, October 2025.
The method flow of coal seam gas pressure measurement based on raw coal gas adsorption is introduced. ABSTRACT The residual gas pressure of pre‐pumped coal seams is one of the key indices to check the effect of regional outburst prevention. The success rate in direct measurement is low, and it is generally obtained indirectly by use of the Langmuir ...
Kuan Wu   +7 more
wiley   +1 more source

Physical simulation study on the transport of biomimetics dandelion proppant in similar coalbed methane fracture network

open access: yesMeitan xuebao
Accelerating the exploration and development of deep coalbed methane resources is a key direction for developing coalbed methane. However, with large-scale volume fracturing in deep coalbed methane development, the complexity of the fractures formed by ...
Jun LI, Pingli LIU, Nianyin LI
doaj   +1 more source

Peculiarities of geological and thermobaric conditions for the gas hydrate deposits occurence in the Black Sea and the prospects for their development [PDF]

open access: yes, 2019
The actuality has been revealed of the necessity to attract the gas hydrate deposits of the Black Sea into industrial development as an alternative to traditional gas fields.
Bondarenko, V., Petlovanyi, M., Sai, K.
core  

In situ loading of a pore network model for quantitative characterization and visualization of gas seepage in coal rocks

open access: yesDeep Underground Science and Engineering, Volume 4, Issue 3, Page 437-451, September 2025.
Fine modeling of a three‐dimensional fracture structure under dynamic loading of coal is carried out. The streamline distribution law of pressure and velocity field in the loading process of the coal specimen is analyzed, the absolute permeability of the coal specimen is calculated, and the feasibility of the pore network model algorithm and finite ...
Huazhe Jiao   +6 more
wiley   +1 more source

Study on dynamic stress field of fracturing in horizontal wells of deep coal seams: A case study of Daning-Jixian block in Ordos Basin [PDF]

open access: yesYouqicang pingjia yu kaifa
China’s deep coalbed methane demonstration base has been preliminarily established and is gradually entering an important stage of large-scale exploration and development.
ZHAO Haifeng, WANG Chengwang, XI Yue, WANG Chaowei
doaj   +1 more source

Microbial Sulfate Reduction Potential in Coal-Bearing Sediments Down to ~2.5 km below the Seafloor off Shimokita Peninsula, Japan [PDF]

open access: yes, 2016
Sulfate reduction is the predominant anaerobic microbial process of organic matter mineralization in marine sediments, with recent studies revealing that sulfate reduction not only occurs in sulfate-rich sediments, but even extends to deeper ...
Adhikari, Rishi R.   +5 more
core   +1 more source

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