Results 121 to 130 of about 44,839 (285)

Pore Pressure Prediction for High-Pressure Tight Sandstone in the Huizhou Sag, Pearl River Mouth Basin, China: A Machine Learning-Based Approach

open access: yesJournal of Marine Science and Engineering
A growing number of large data sets have created challenges for the oil and gas industry in predicting reservoir parameters and assessing well productivity through efficient and cost-effective techniques.
Jin Feng   +9 more
doaj   +1 more source

Response and Recovery of the Comanche Carbonate Platform Surrounding Multiple Cretaceous Oceanic Anoxic Events, Northern Gulf of Mexico [PDF]

open access: yes, 2015
The ubiquity of carbonate platforms throughout the Cretaceous Period is recognized as a product of high eustatic sea-level and a distinct climatic optimum induced by rapid sea-floor spreading and elevated levels of atmospheric carbon-dioxide.
Da-Gama, Rui O.B.P.   +5 more
core   +1 more source

Parallel functional and stoichiometric trait shifts in South American and African forest communities with elevation [PDF]

open access: yes, 2017
The Amazon and Congo basins are the two largest continuous blocks of tropical forest with a central role for global biogeochemical cycles and ecology. However, both biomes differ in structure and species richness and composition.
C. Taveirne   +8 more
core   +3 more sources

Prediction of formation abrasiveness under the action of a PDC bit based on the fractal dimension of a rock surface

open access: yesScientific Reports
During rock drilling, a drill bit will wear as it breaks the rock. However, there is no uniform grading standard for rock abrasiveness. To solve this problem, the wear mechanisms of a polycrystalline diamond compact (PDC) bit and the formation it is ...
Changhao Wang   +6 more
doaj   +1 more source

Geochemical and Reservoir Characteristics of the Upper Triassic Continental Shale in the Sichuan Basin, China [PDF]

open access: bronze, 2015
Jinliang Huang   +6 more
openalex   +1 more source

Base metal mineralisation associated with Ordovician shales in south-west Scotland [PDF]

open access: yes, 1984
Several narrow, lenticular belts of black cherty mudstone and siltstone (the Moffat Shales), alternating with thick greywacke sequences, strike north-east to south-west across Galloway with uniformly steep dip.
Jones, R.C., Leake, R.C., Stone, P.
core  

Sedimentology of the Triassic–Jurassic boundary beds in Pinhay Bay (Devon, SW England) [PDF]

open access: yes, 2001
Sedimentology of the Triassic–Jurassic boundary beds in Pinhay Bay(Devon, SW England). Proceedings of the Geologists’ Association, 112. 349–360. New exposures in Pinhay Bay (SE Devon) of the White Lias (Langport Member of the Lilstock Formation)and ...
Wignall, P.B.
core   +1 more source

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