Results 41 to 50 of about 217,804 (188)

A Critical Review of Osmosis-Associated Imbibition in Unconventional Formations

Energies, 2021
In petroleum engineering, imbibition is one of the most important elements for the hydraulic fracturing and water flooding processes, when extraneous fluids are introduced to the reservoir.
Zhou Zhou, Xiaopeng Li, Tadesse Weldu Teklu   +2 more
doaj   +1 more source

Coal-shale interface detection system [PDF]

, 1979
A coal-shale interface detection system for use with coal cutting equipment consists of a reciprocating hammer on which an accelerometer is mounted to measure the impact of the hammer as it penetrates the ceiling or floor surface of a mine.
Campbell, R. A., Hudgins, J. L., Morris, P. W., Reid, H., Jr., Zimmerman, J. E.   +4 more
core   +1 more source

LOW-TEMPERATURE PROCESSING OF COLOMBIAN COAL IN EXPERIMENTAL RETORT [PDF]

Oil Shale, 2022
Viktor Yefimov, I. Pulemetov, S. Doilov
doaj   +1 more source

Effects of Clay Minerals and External Pressures on Imbibition in Shales

Energies, 2021
Imbibition is an important mechanism of recovery during waterflooding and low flow-back during fracking in shale reservoirs. Experiments were carried out to study the development of imbibition in shale samples.
Li Lu, Jianting Li, Xuhui Zhang, Yingjun Li, Fujian Ma   +4 more
doaj   +1 more source

Tellurium, selenium and cobalt enrichment in Neoproterozoic black shales, Gwna Group, UK : Deep marine trace element enrichment during the Second Great Oxygenation Event [PDF]

, 2018
We are grateful to John Still for his skilled technical support and the ACEMAC facility at the University of Aberdeen. Research funded by NERC grant NE/M010953/1 and NERC facility grant IP-1631-0516. AJB is funded by NERC support of the Isotope Community
Armstrong, Joseph, Boyce, Adrian, Bullock, Liam A, Feldmann, Jörg, Parnell, John, Perez, Magali   +5 more
core   +2 more sources

Geological factors controlling high flowback rates of shale gas wells in the Changning area of the southern Sichuan Basin, China

Frontiers in Earth Science
In the Changning block of the southern Sichuan Basin, the shale gas wells in the Upper Ordovician Wufeng Formation to Lower Silurian Longmaxi Formation (Wufeng–Longmaxi) demonstrate significant difference in flowback rate of fracturing fluid, given the ...
Yongyang Liu, Yongyang Liu, Shengxian Zhao, Shengxian Zhao, Xuefeng Yang, Xuefeng Yang, Bo Li, Bo Li, Jian Zhang, Jian Zhang, Chunhai Ji, Shan Huang, Shan Huang, Tianpeng Wu, Tianpeng Wu, Chongjiu Qu, Chongjiu Qu   +16 more
doaj   +1 more source

Molecular-Scale Considerations of Enhanced Oil Recovery in Shale

Energies, 2020
With only less than 10% recovery, the primary production of hydrocarbon from shale reservoirs has redefined the energy equation in the world. Similar to conventional reservoirs, Enhanced Oil Recovery (EOR) techniques could be devised to enhance the ...
Mohamed Mehana, Qinjun Kang, Hari Viswanathan   +2 more
doaj   +1 more source

Unconventional gas: potential energy market impacts in the European Union [PDF]

, 2012
In the interest of effective policymaking, this report seeks to clarify certain controversies and identify key gaps in the evidence-base relating to unconventional gas.
ALECU Corina, ERIKSSON Arne, GRACCEVA FRANCESCO, MCGLADE Christophe, PEARSON IVAN, SCHUETZ Michael, SORRELL Steve, SPEIRS James, THONHAUSER Gerhard, TOFT Peter, ZASTERA Pavel, ZENIEWSKI PETER   +11 more
core   +1 more source

Shale-Oil Development Prospects: The Role of Shale-Gas in Developing Shale-Oil [PDF]

Energies, 2019
Currently, most of the world’s shale-oil is coming from the United States, but more may be needed from non-U.S. sources in order to keep the world price of oil from increasing, and yet a number of petroleum producing countries have yet to develop shale-oil resources. This article investigates why that may be.
Douglas B. Reynolds, Maduabuchi Pascal Umekwe   +1 more
openaire   +2 more sources

Experimental studies on the shear resistance of original coal-shale joint [PDF]

, 2017
Purpose. Experimental study and theoretical modeling of the shear resistance of original coal-shale joint. Methods. A two-segment model was developed to describe the shear resistance-shear displacement curves obtained from the direct shear tests of ...
Dong, H, Guo, B, Wang, L
core   +2 more sources