Results 41 to 50 of about 1,554 (171)

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, Volume 49, Issue 4, Page 1179-1194, October 2026.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

1D Basin Modelling of Upper Jurassic to Upper Cretaceous Source Rocks in the Southern Pletmos Sub‐Basin, Outeniqua Basin, Offshore South Africa

Journal of Petroleum Geology, Volume 49, Issue 4, Page 1382-1411, October 2026.
ABSTRACT The Pletmos sub‐basin in the Outeniqua Basin, offshore South Africa, is divided by the Superior, Pletmos and Plettenberg faults into northern and southern depocentres. In this study, geological and organic geochemical data together with 1D basin modelling were used to investigate the burial, thermal and maturation histories, and the timing of ...
Fritz Ako Agbor, Sanelisiwe Mhlambi, Nimuno Achu Teumahji, Wasiu Adedayo Sonibare, Jan van Bever Donker   +4 more
wiley   +1 more source

Research Progress of Micro-Nano Bubbles (MNBs) in Petroleum Engineering

Gels
Micro-nano bubbles (MNBs), typically characterized by diameters ranging from tens of micrometers to hundreds of nanometers, have gained significant attention in recent years due to advancements in nanotechnology and related characterization methods. This
Yubo Lan, Dongyan Qi, Jiawei Li, Tong Yu, Tianyang Liu, Wenting Guan, Min Yuan, Kunpeng Wan, Zhengxiao Xu   +8 more
doaj   +1 more source

Outcrop and subsurface characterisation of a mixed tidal and wave‐influenced coastline (Triassic Red Beds, SE Spain)

Sedimentology, Volume 73, Issue 6, Page 2381-2416, October 2026.
ABSTRACT Paralic depositional systems are complex and heterogeneous sedimentary environments, presenting challenges for predicting reservoir architecture and connectivity. Their stratigraphic and facies variability arises from the dynamic interplay between fluvial, tidal and wave processes, and their sensitivity to sea‐level fluctuations, sediment ...
Luis Miguel Yeste, Marc Gil‐Ortiz, Neil David McDougall, Patricia Cabello, César Viseras   +4 more
wiley   +1 more source

Event-based recursive filtering for nonlinear bias-corrupted systems with amplify-and-forward relays

Systems Science & Control Engineering
In this paper, the recursive filtering issue is investigated for an array of nonlinear bias-corrupted systems with a dynamic amplify-and-forward (AF) relay under the dynamic event-triggered scheme (DETS).
Dongyan Dai, Jiahui Li, Yanhua Song, Fan Yang   +3 more
doaj   +1 more source

Cenozoic tropical carbonate platforms in the Santos Basin, SE Brazilian Margin

Sedimentology, Volume 73, Issue 6, Page 2454-2487, October 2026.
ABSTRACT Tropical carbonate platforms accompanied the latitudinal shifts of the tropical belt throughout the Cenozoic. Their flat‐topped geometries were influenced by a specific set of processes, including climate and sea‐level changes, carbonate facies, tectonics and continental runoff.
Mateus Gama, Gabriel Tagliaro, Adolfo Britzke, Pedro Bauli, Otavio Neto, Luigi Jovane   +5 more
wiley   +1 more source

A Novel Method to Determine the Grain Size and Structural Heterogeneity of Fine-Grained Sedimentary Rocks

Fractal and Fractional
Fine-grained sedimentary rocks exhibit significant textural heterogeneity, often obscured by conventional grain size analysis techniques that require sample disaggregation.
Fang Zeng, Shansi Tian, Hongli Dong, Zhentao Dong, Bo Liu, Haiyang Liu   +5 more
doaj   +1 more source

Prediction of Total Organic Carbon Content in Shale Based on PCA-PSO-XGBoost

Applied Sciences
Total organic carbon (TOC) content is an important parameter for evaluating the abundance of organic matter in, and the hydrocarbon production capacity, of shale. Currently, no prediction method is applicable to all geological conditions, so exploring an
Yingjie Meng, Chengwu Xu, Tingting Li, Tianyong Liu, Lu Tang, Jinyou Zhang   +5 more
doaj   +1 more source

Characteristics and facies classification of oil shales in major continental basins of China

Oil Shale
The continental oil shales of China exhibit pronounced heterogeneity in organic matter abundance, mineral composition, and sedimentary structures. Characterizing their lithofacies is therefore fundamental for reconstructing depositional environments, assessing resource potential, and guiding resource development.
Hongbiao Wang, Duoxiao Sun, Hongliang Dang, Yanwei Bi, Pingchang Sun   +4 more
openaire   +1 more source

Geochemical Characteristics of Mature to High-Maturity Shale Resources, Occurrence State of Shale Oil, and Sweet Spot Evaluation in the Qingshankou Formation, Gulong Sag, Songliao Basin

Energies
The exploration of continental shale oil in China has made a breakthrough in many basins, but the pure shale type has only been found in the Qingshankou Formation, Gulong Sag, Songliao Basin, and the evaluation of shale oil occurrence and sweet spot ...
Bo Gao, Zihui Feng, Jinglan Luo, Hongmei Shao, Yubin Bai, Jiping Wang, Yuxuan Zhang, Yongchao Wang, Min Yan   +8 more
doaj   +1 more source