Results 31 to 40 of about 6,107,032 (303)

Favorable lithofacies types and genesis of marine-continental transitional black shale: A case study of Permian Shanxi Formation in the eastern margin of Ordos Basin, NW China

open access: yesPetroleum Exploration and Development, 2021
Based on core description, thin section identification, X-ray diffraction analysis, scanning electron microscopy, low-temperature gas adsorption and high-pressure mercury intrusion porosimetry, the shale lithofacies of Shan23 sub-member of Permian Shanxi
Jin WU   +9 more
doaj   +1 more source

Analysis of reservoir geological characteristics and development countermeasures [PDF]

open access: yes, 2023
Under the background of the continuous improvement of the scale of modern petroleum engineering construction in our country, the level of oilfield development technology has been improved in an all-round way, which provides sufficient resources for the ...
Hong Zheng, Zheng Hong
core   +1 more source

Reservoir characteristics and oil-bearing evaluation of Cretaceous shale oil in Qingxi Sag, Jiuquan Basin

open access: yesShiyou shiyan dizhi
A series of fine-grained sediments with mixed origins of mudstone-dolomite and clastic rock are developed in the Cretaceous of Qingxi Sag in the Jiuquan Basin, providing favorable conditions for shale oil enrichment. Samples of different lithofacies were
Tao LI   +7 more
doaj   +1 more source

Influence of structural setting, depositional environment and differential diagenesis on reservoir quality of the Xixiangchi formation in the central and southern Sichuan Basin, China

open access: yesFrontiers in Earth Science
The Middle-Upper Cambrian Xixiangchi Formation (504 - 488 Ma) dolomite in the central-southern Sichuan Basin constitutes significant hydrocarbon reservoirs, though their complex genetic mechanisms remain inadequately constrained.
Shizhen Chen   +18 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Dolomitization and Reservoir Characteristics

open access: yesChigaku Zasshi (Jounal of Geography), 2009
Dolomite (dolostone) is a common carbonate rock in the geological records and is also a very important carbonate reservoir rock, which stock about 40% of global oil reserves. Most of the dolomites in the geological record are considered to be of replacement origin, although some were precipitated directly from pore-fluids.
openaire   +2 more sources

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Boat electrofishing survey of the upper Turitea Reservoir, Palmerston North. [PDF]

open access: yes, 2009
The upper Turitea Reservoir is a 12-ha reservoir that supplies water to the city of Palmerston North (Figure 1). It was constructed in 1957 and is located in the foothills of the Tararua Ranges at 40.43208°S, 175,67669°E. The 2,300 hectare catchment area
Powrie, Warrick   +5 more
core  

Reservoir characteristics analysis and favorable area prediction of Zhuhai Formation, Wenchang A oilfield, South China Sea

open access: yesFrontiers in Earth Science
Wenchang A oilfield is a recently discovered low-permeability oilfield in the western South China Sea. The exploration target is the Zhuhai Formation, which reservoir lithology changes significantly, and the distribution of favorable reservoirs is ...
Jianning Liu
doaj   +1 more source

Classification, identification, and reservoir characteristics of intermediate mafic lava flows: a case study in Dongling area, Songliao Basin

open access: yesFrontiers in Earth Science, 2023
Intermediate mafic lava is a special oil and gas reservoir. While its internal structure is an important factor affecting the reservoir properties, the identification of facies and understanding of the relationship between facies architecture and ...
Qingyou Yue   +7 more
doaj   +1 more source

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