Results 81 to 90 of about 4,247,994 (151)

Dinosaur footprints and other Ichnofauna from the Cretaceous Kem Kem Beds of Morocco [PDF]

open access: yes, 2014
We describe an extensive ichnofossil assemblage from the likely Cenomanian-age 'lower' and 'upper' units of the 'Kem Kem beds' in southeastern Morocco.
Baidder, Lahssen   +31 more
core   +2 more sources

In-situ porosity restoration of clay-rich lacustrine shale oil reservoirs and its implications for shale oil reserve evaluation

open access: yesPetroleum Exploration and Development
To accurately evaluate the storage capacity of shale oil reservoirs under in-situ temperature and pressure conditions, we constructed a new model for determining the porosity under formation conditions, developed a HTHP shale porosity measurement system ...
Longde SUN   +10 more
doaj   +1 more source

Coupling relationship between diagenetic evolution of organo-clay complex and four properties of shale: A case study of Cretaceous Qingshankou Formation shale, northern Songliao Basin, China

open access: yesPetroleum Exploration and Development
Taking the shale of Cretaceous Qingshankou Formation in northern Songliao Basin, China, as an example, this study adopts experimental methods including X-ray diffraction analysis, field emission electron microscopy, atomic force microscopy, two ...
Gao Bo   +6 more
doaj   +1 more source

Optimization of refracturing timing for horizontal wells in tight oil reservoirs: A case study of Cretaceous Qingshankou Formation, Songliao Basin, NE China

open access: yesPetroleum Exploration and Development, 2019
Tight oil reservoirs in Songliao Basin were taken as subjects and a novel idealized refracturing well concept was proposed by considering the special parameters of volume fracturing horizontal wells, the refracturing potential of candidate wells were ...
Jianchun GUO, Liang TAO, Fanhui ZENG
doaj   +1 more source

Provenance and geochemistry of exotic clasts in conglomerates of the Oligocene Torehina Formation, Coromandel Peninsula, New Zealand [PDF]

open access: yes, 2003
Non-marine pebble to cobble conglomerates of the lower Torehina Formation (Oligocene) crop out along western Coromandel Peninsula and overlie, with strong angular discordance, continental-margin metasedimentary rocks (Manaia Hill Group) of Mesozoic (Late
Nelson, Campbell S.   +3 more
core   +1 more source

The evolution of large-bodied theropod dinosaurs during the Mesozoic in Asia [PDF]

open access: yes, 2010
The fossil record of large-bodied, apex carnivorous theropod dinosaurs in Eastern Asia is now among the best understood in the world, thanks to new discoveries and reinterpretations of long-neglected fossils.
Benson, R. B. J.   +6 more
core   +1 more source

Pore characteristics of lacustrine mudstones from the Cretaceous Qingshankou Formation, Songliao Basin

open access: yes, 2017
Cretaceous Qingshankou ([Formula: see text]) mudstone of lacustrine origin is the major source rock for conventional hydrocarbon currently being produced in the Daqing and Jilin oilfields of the Songliao Basin, which is one of the largest continental ...
Shuangfang Lu   +3 more
core   +1 more source

Multi-Scale Pore Structure Characterization and Elemental Geochemistry of Source Rocks in the Upper Cretaceous Qingshankou Formation, Songliao Basin, NE China

open access: yes
Lacustrine shales are globally important both as archives of paleoenvironmental change and as unconventional hydrocarbon reservoirs. The first Member of the Upper Cretaceous Qingshankou Formation in the Songliao Basin, NE China, represents a prominent ...
Zhiming Li   +4 more
core   +1 more source

Letter. Late cretaceous seasonal ocean variability from the arctic

open access: yes, 2009
The modern Arctic Ocean is regarded as barometer of global change and amplifier of global warming1 and therefore records of past Arctic change are of a premium for palaeoclimate reconstruction.
Kemp, Alan E.S.   +6 more
core   +1 more source

Effect of Hydrocarbon Expulsion on Light Oil/Condensate Generation During Artificial Maturation of Qingshankou Shale Kerogen from the Songliao Basin

open access: yes
As exploration expands into deep and unconventional petroleum systems, light oil and condensate have become key targets for reserve growth and production enhancement.
Yusheng Wang   +5 more
core   +1 more source

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