Results 31 to 40 of about 44,839 (285)

In-situ hydrocarbon formation and accumulation mechanisms of micro- and nano-scale pore-fracture in Gulong shale, Songliao Basin, NE China

open access: yesPetroleum Exploration and Development, 2023
By conducting experimental analyses, including thermal pyrolysis, micro-/nano-CT, argon-ion polishing field emission scanning electron microscopy (FE-SEM), confocal laser scanning microscopy (CLSM), and two-dimensional nuclear magnetic resonance (2D NMR),
Xiaojun WANG   +7 more
doaj   +1 more source

Authigenic silica in continental lacustrine shale and its hydrocarbon significance

open access: yesPetroleum Exploration and Development, 2022
Taking lake basin shales of the Triassic Yanchang Formation in the Ordos Basin, NW China and the Cretaceous Qingshankou Formation in the Songliao Basin, NE China as research objects, the characteristics and origins of different types of silica in the shales have been studied by means of core observation, thin section identification, cathodoluminescence,
Bin BAI   +8 more
openaire   +2 more sources

Conodont biostratigraphy of the Crawford Group, Southern Uplands, Scotland [PDF]

open access: yes, 2002
Extensive new conodont collections from the Crawford Group, the oldest succession in the Southern Uplands of Scotland, support the previously documented biostratigraphical ages for the included formations.
Armstrong, Howard A.   +3 more
core   +1 more source

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

open access: yes, 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   +11 more
core   +1 more source

Cenozoic evolution of the eastern Black Sea: a test of depth-dependent stretching models [PDF]

open access: yes, 2008
Subsidence analysis of the eastern Black Sea basin suggests that the stratigraphy of this deep, extensional basin can be explained by a predominantly pure-shear stretching history.
Edwards, Glyn R.H.   +6 more
core   +1 more source

Combination of alkali–surfactant–polymer​ flooding and horizontal wells to maximize the oil recovery for high water cut oil reservoir

open access: yesEnergy Reports, 2021
Alkali/surfactant/polymer (ASP) combines the advantages of each of the chemical in the blend. ASP has shown to be an effective and practical method to enhance oil recovery.
Jianguang Wei   +3 more
doaj   +1 more source

Characterization of Upper Jurassic Organic-Rich Caprock Shales in the Norwegian Continental Shelf

open access: yesGeosciences, 2022
Characterizing the top seal integrity of organic-rich caprock shale is critical in hydrocarbon exploration and fluid storage sites assessment because the caprock acts as a barrier to the low-density upward migrating fluids. This study investigated the geomechanical properties of the Upper Jurassic caprock shales of various basins from the Norwegian ...
Md Jamilur Rahman   +3 more
openaire   +5 more sources

Geochemical characteristics and mechanisms of densification of pre-Jurassic crude oil in the Tainan Sag, Turpan-Hami Basin, China

open access: yesUnconventional Resources, 2022
Large volumes of heavy oil were distributed in the pre-Jurassic strata of Tainan sag, Turpan Hami Basin, China. The geochemical characteristics and origins of heavy oil are of great significance to future exploration in the region.
Yaao Chi   +6 more
doaj   +1 more source

Can the US shale revolution be duplicated in continental Europe? An economic analysis of European shale gas resources [PDF]

open access: yesEnergy Economics, 2018
Abstract Over the past decade, the rapid increase in shale gas and shale oil production in the United States has profoundly changed energy markets in North America, and has led to a significant decrease in American natural gas prices. The possible existence of large shale deposits in continental Europe, mainly in France, Denmark, the Netherlands and ...
openaire   +3 more sources

Study on Wax Deposition Law in Daqing Gulong Shale Oil [PDF]

open access: yesE3S Web of Conferences
Daqing Gulong shale oil exhibits elevated wax content, a high wax precipitation point, and a high freezing point. However, its oil density and viscosity are relatively low, making it susceptible to wax crystal precipitation. The risk of pipeline clogging
Zhao Xuefeng   +5 more
doaj   +1 more source

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