Results 101 to 110 of about 18,782 (249)

Influence of differential diagenesis of Chang 8 tight sandstone reservoirs in Qingcheng area on oil bearing properties

Youqi dizhi yu caishoulu
To explore the influence of differential diagenesis on the oil bearing properties of tight sandstone reservoirs， Chang 8 reservoirs with ultra-low porosity and ultra-low permeability in the Qingcheng area were used as an example. Based on the statistical
ZHONG Hongli, WANG Guoxi, WU Jiuhu, CAI Yongji, LI Hailong, LIU Meirong   +5 more
doaj   +1 more source

Modeling particulate organic matter diagenesis with SED2K

, 2011
Diagenesis of particulate organic matter in lake sediments consumes and produces chemical species that have significant effects on water quality, e.g. oxygen and nitrate depletion and attendant mediation of nutrient and metal recycling.
Gawde, Rasika Kishor
core   +1 more source

Process‐based Modelling of Syn‐depositional Diagenesis [PDF]

, 2018
Carbonate rocks are of global importance both as economically significant reservoirs for oil and gas and as aquifers for water supply. On deposition, most carbonate sediments transmit fluids through matrix porosity, and thus they act as single ...
Whitaker, Fiona, Miles Frazer, Frazer, Miles A, Fiona Whitaker   +3 more
core   +1 more source

Sedimentology and reservoir characterisation of Lower Jurassic clastic sedimentary rocks, Salt and Trans Indus Ranges, Pakistan: Evidence from petrography, scanning electron microscopy and petrophysics

The Depositional Record
In this study, sandstones of the Lower Jurassic Datta Formation in the Salt and Trans‐Indus ranges are investigated regarding composition, diagenesis, provenance and reservoir properties using petrography, scanning electron microscopy and petrophysical ...
Salman Ahmed Khattak, Nasar Khan, Waseem Khan, S. Sahaya Jude Dhas, George Kontakiotis, Ihtisham Islam, Hammad Tariq Janjuhah, Assimina Antonarakou   +7 more
doaj   +1 more source

Diagenetic processes controlled by volcanic detritus of the Lower‐Middle Permian Shanxi and Shihezi sandstone formations, North Ordos Basin, China

The Depositional Record
Volcanogenic detritus in sandstones not only conveys important provenance information but also significantly impacts diagenetic processes. This study specifically focuses on such understudied effects by carrying out grain size, petrographic, fluid ...
Yuanlan Tang, Wei Jiang, Xianfeng Tan, Long Luo, Eduardo Garzanti, Jon Gluyas, Xueqi Yan, Jianping Liu, Tao Lei, Xuejiao Qu, Jia Wang, Xin Yu   +11 more
doaj   +1 more source

Biogenic silica diagenesis under early burial in hemipelagic marine sediments

, 2018
Four aspects of biogenic silica diagenesis are researched under this project: signatures of ongoing silica diagenesis in pore water, drivers leading to anomalous compaction (abrupt petrophysical changes), bottom-water temperature controls on silica ...
Shahab Varkouhi, Varkouhi, Shahab
core   +1 more source

Systematic Approach for Carbonate and Volcanic Facies Classification Based on Textural and Structural Variations Observed in Brazilian Pre‐Salt Acoustic Image Logs

Journal of Petroleum Geology, Volume 49, Issue 3, Page 869-906, July 2026.
ABSTRACT Facies characterization in carbonate reservoirs remains challenging due to their pronounced textural and structural heterogeneity. Variations in grain packing, cementation, and diagenetic overprints produce contrasting acoustic responses in borehole image logs, often limiting the reproducibility of facies interpretation.
Lenita de Souza Fioriti, Rodrigo César Teixeira de Gouvêa, Cleyton de Carvalho Carneiro   +2 more
wiley   +1 more source

Survey of the diagenesis process and effect these process on reservoir quality of the Kangan formation in South Pars Field

, 2009
Kangan and Upper Dalan formations are forming reservoir sequence of the South Pars field. Litology of the kangan formation is carbonate and (limestone and dolomite with anhydrite intervals), so digenetic processes were very active in this formation and ...
Masoud Asgharian Rostami, Hossein Rahimpour-Bonab, Gholamreza Hosseinyar, Ashkan Asadi Esksndar   +3 more
core  

Photosynthetic primary production in the Mesoproterozoic

New Phytologist, Volume 251, Issue 1, Page 64-80, July 2026.
Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo, John A. Raven   +1 more
wiley   +1 more source

Hyperspectral Fingerprinting of Dune Sediments Across the Arabian Peninsula: Insights Into Sediment Provenance and Transport Pathways From NASA's EMIT Data

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The Arabian Peninsula encompasses one of the world's most extensive aeolian systems, yet the provenance and transport history of its dune sediments are not well understood. Using hyperspectral data from NASA's Earth Surface Mineral Dust Source Investigation (EMIT), we mapped mineral compositions and abundance patterns across dune fields and ...
Ahmed Alshakr, Mohamed Sultan, Mustafa Kemal Emil, Hassan Alharbi, Fahad Alshehri, Abdullah A. Alotaibi, Abdullah T. Mohammad, Aylin Yildirim, Neil C. Sturchio   +8 more
wiley   +1 more source