Results 1 to 10 of about 96,518 (211)

Sedimentary Cobalt Protoporphyrin as a Potential Precursor of Prosthetic Heme Group for Bacteria Inhabiting Fossil Organic Matter-Rich Shale Rock [PDF]

open access: yesBiomolecules, 2021
This study hypothesizes that bacteria inhabiting shale rock affect the content of the sedimentary cobalt protoporphyrin present in it and can use it as a precursor for heme synthesis.
Robert Stasiuk, Renata Matlakowska
doaj   +2 more sources

Molecular identification of fungi microfossils in a Neoproterozoic shale rock. [PDF]

open access: yesSci Adv, 2020
We report the discovery of 715 to ca. 810 million–year–old fungal fossils through molecular characterization of vestigial chitin.
Bonneville S   +9 more
europepmc   +9 more sources

Cross-scale mechanical softening of Marcellus shale induced by CO2-water–rock interactions using nanoindentation and accurate grain-based modeling

open access: yesUnderground Space (China)
Mechanical softening behaviors of shale in CO2-water–rock interaction are critical for shale gas exploitation and CO2 sequestration. This work investigated the cross-scale mechanical softening of shale triggered by CO2-water–rock interaction.
Xuhai Tang, Yong Kang, Shimin Liu
exaly   +3 more sources

Rock Physics Model of Shale: Predictive Aspect [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2021
AbstractShales often show strong elastic anisotropy that originate from the alignment and platy nature of its constituent minerals. Despite its impact on amplitude variation with offset response and seismic time‐shifts, elastic anisotropy of shales is, however, often ignored since it is difficult to measure enough parameters in the field. Being able to
M. Asaka, R. M. Holt, A. Bakk
openaire   +2 more sources

Reconstruction of 3D multi-mineral shale digital rock from a 2D image based on multi-point statistics

open access: yesFrontiers in Earth Science, 2023
Introduction: Shale oil and gas reservoirs contain a variety of inorganic and organic pores that differ significantly from conventional reservoirs, making traditional experiments ineffective.
Lei Liu   +13 more
doaj   +1 more source

Experimental Research of the Influence of Microfracture Morphology on Permeability of Shale Rock

open access: yesGeofluids, 2021
Hydraulic fracturing is currently one of the main technical methods of shale gas exploitation. The permeability variation of shale gas reservoir after fracturing is inevitable, while the influence of fracture length and fracture width on permeability and
Xiaohe Huang   +3 more
doaj   +1 more source

Mechanical Properties of Shale-Reservoir Rocks Based on Stress–Strain Curves and Mineral Content

open access: yesGeofluids, 2022
The evaluation of rock mechanic characteristics of shale reservoir is the key for the success of fracturing. Several limitations such as complex lithology can affect the accuracy of the rock mechanic property computation. In this research, the mechanical
Wen-Tie Sun   +6 more
doaj   +1 more source

Method for Determining Key Parameters of Anisotropic Rock Mechanics of Continental Shale Oil in Cangdong Sag

open access: yesCejing jishu, 2023
The member Ek2 continental shale oil in the Cangdong sag has currently entered the stage of beneficial development and pilot testing. In order to achieve economy of scale development, horizontal well drilling and completion large-scale volume fracturing ...
DING Yujiao   +5 more
doaj   +1 more source

Research on Rock Physics Modeling Methods for Fractured Shale Reservoirs

open access: yesEnergies, 2022
The Sichuan Basin is a significant region for exploration and development of shale gas in China, and it is essential to clarify the impact of deep shale gas reservoir parameters on cost-effective development at scale to ensure national energy security ...
Shengbo Yi   +5 more
doaj   +1 more source

Evaluation of oil content in shale by sealed thermal desorption: a case study of Jurassic Da'anzhai Member, Sichuan Basin

open access: yesShiyou shiyan dizhi, 2022
The oil content in shale is still a contentious issue due to the evaporative losses of free hydrocarbon. Considering the objective of the evaluation of oil content in shale and the demand of fast analysis at wellsite, a newly developed sealed rock ...
Chao LUO   +6 more
doaj   +1 more source

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