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Power Industry
- North America > United States > California (1.00)
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- Geology > Structural Geology > Tectonics > Plate Tectonics (1.00)
- Geology > Rock Type (1.00)
- Geology > Mineral (1.00)
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- Geophysics > Gravity Surveying (1.00)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Passive Seismic Surveying (0.92)
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- Materials > Metals & Mining (1.00)
- Materials > Chemicals (1.00)
- Government > Regional Government > North America Government > United States Government (1.00)
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- North America > United States > Nevada > Dixie Valley Field (0.99)
- North America > United States > California > Mayacamas Mountains > Geysers Field (0.99)
- North America > Trinidad and Tobago > Trinidad > Southern Basin (0.99)
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- Information Technology > Modeling & Simulation (0.92)
- Information Technology > Communications > Collaboration (0.40)
Artificial intelligence (AI) is increasingly being employed to assist in the development of materials, including metal-organic frameworks (MOFs), to develop carbon capture technologies. MOFs are modular materials made up of three building blocks: inorganic nodes such as zinc or copper; organic nodes; and organic linkers made up of carbon, oxygen, and other elements. By changing the relative positions and configurations of the building blocks, the potential combinations for creation of unique MOFs are countless. The idea is to create a porous carbon dioxide "trap" to capture carbon from the air. The structure created by the building blocks can be thought of simplistically as a scaffolding with joints (linkers) that functions to absorb carbon.
- Energy > Power Industry (0.32)
- Government > Regional Government (0.31)
Quantifying the influence of clay-bound water on wave dispersion and attenuation signatures of shale: An experimental study
Long, Teng (University of Houston) | Qin, Xuan (University of Houston) | Wei, Qianqian (University of Houston) | Zhao, Luanxiao (Tongji University) | Wang, Yang (University of Houston) | Chen, Feng (University of Houston) | Myers, Michael T. (University of Houston) | Zheng, Yingcai (University of Houston) | Han, De-Hua (University of Houston)
ABSTRACT Understanding the elastic and attenuation signatures of shales is of considerable interest for unconventional reservoir characterization and sealing capacity evaluation for CO2 sequestration and nuclear waste disposal. We have conducted laboratory measurements on seven shale samples at seismic frequencies (2–100 Hz) to study the effects of clay-bound water (CBW) on their wave dispersion and attenuation signatures. With nuclear magnetic resonance and a helium porosimeter, the volume of CBW in the shale samples is quantified. The forced-oscillation measurement reveals that Young’s modulus exhibits a continuous dispersion trend from 2 to 100 Hz. The extensional attenuation () shows a weak frequency and pressure dependence on effective pressure ranging from 5 to 35 MPa. The magnitude of extensional attenuation shows a positive correlation with CBW, with an value of 0.89. It is found that 4% of CBW in the rock frame causes approximately a 5% modulus increase from 2 to 100 Hz. We adopt a constant model for assigning frequency-dependent bulk and shear moduli to the CBW in the rock-physics modeling, which can fit the experimental data of modulus dispersion and attenuation well, indicating that the bulk and shear moduli of CBW in shales might behave viscoelastically.
- Research Report > New Finding (0.50)
- Research Report > Experimental Study (0.40)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock > Shale (1.00)
- Geology > Mineral > Silicate (1.00)
- Geology > Geological Subdiscipline > Geomechanics (1.00)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Seismic Interpretation (0.67)
- North America > United States > New Mexico > San Juan Basin > San Juan Basin Field > Mancos Formation (0.99)
- North America > United States > Colorado > San Juan Basin > San Juan Basin Field > Mancos Formation (0.99)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Shale gas (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Open hole/cased hole log analysis (1.00)
This webinar introduces participants to the evolution of the Human and Organisational Performance (H&OP) in the US Nuclear Industry. From Three Mile Island until today, the nuclear power industry achieved exceptional safety and performance improvements, exhibiting high-reliable approaches to the design, construction, operations, and maintenance of its nuclear power plants. The introduction of H&OP principles and practices has strongly contributed to this success. Despite the most recent nuclear accident at Fukushima in Japan after a massive tsunami, the industry continues to operate the plants with a central focus on protecting the reactor core (its key asset and hazard). The O&G industry borrows heavily from that work; many of the H&OP principles and practices applied today by O&G companies are based on the guidance and experience developed in the nuclear sector in the last 30 years.
Key Takeaways - Understanding how to prevent serious injuries and fatalities (SIFs) is a priority for the safety profession. Potential SIF (PSIF) events may be used to significantly broaden learning. However, an experiment revealed that current methods of defining PSIF events result in so much inconsistency in classification (noise) that they have limited utility. - To address this core limitation, the safety classification and learning (SCL) model was created by an integrated team of academic and industry professionals. This model is based on the science of energy-based safety, controls analysis and principles of human performance. - A community of practice was created to facilitate implementation and diffusion of the SCL model via calibration, revision, data sharing, sector-level trending and advocacy. _ In the safety profession, nothing is more important than preventing serious injuries and fatalities (SIFs). Despite widespread efforts, however, SIFs continue to plague every major industry. In 2021 alone, 5,190 fatal injuries occurred in U.S. workplaces (BLS, 2022), resulting in $6 billion of direct costs and immeasurable harm to the well-being of the workforce and their families (NSC, n.d.). Although safety professionals have made great strides in the prevention of recordable injuries, the rate of SIFs has generally plateaued and even increased in recent years (BLS, 2022). For example, as observed in Figure 1 (p. 20), the rate of OSHA-recordable injuries declined in the electric utility sector by approximately 50% over the past decade while the rate of fatal injuries has remained relatively stable. When examining 3.2 trillion worker hours of data across industrial sectors, Hallowell et al. (2021) found a similar statistical disconnect. These trends provide compelling evidence that reductions in lower-severity injuries do not translate to proportional reductions in SIFs, which directly contradicts antiquated theories stemming from the unfortunately ubiquitous Heinrich pyramid (Heinrich, 1931). Therefore, targeted methods are needed for SIF-specific learning and prevention.
- Health & Medicine (1.00)
- Government > Regional Government > North America Government > United States Government (1.00)
- Energy > Power Industry > Utilities (0.86)
- Health, Safety, Environment & Sustainability > Safety (1.00)
- Health, Safety, Environment & Sustainability > Health (1.00)
- Data Science & Engineering Analytics > Information Management and Systems > Artificial intelligence (1.00)
- Health, Safety, Environment & Sustainability > HSSE & Social Responsibility Management > HSSE reporting (0.88)
The job of an electric grid operator is, succinctly put, to keep supply and demand in constant balance, as even minor imbalances between the two can damage equipment and cause outages. This balance is a highly complex undertaking that involves coordinating hundreds of generation units with the demands of millions of individual customers. Historically, this challenge was mitigated by predictability: the generation (supply) side had power plants that could be turned up or down as needed, while the load (demand) side had customers who generally had the same devices in their houses and used them in the same ways. Grid operators knew what was coming and could adjust production to accommodate it. Given recent changes in energy supply and demand, energy storage is of increasing interest to ensure reliable and sustainable provision.
Three-dimensional resistivity structure in Toya caldera region, Southwest Hokkaido, Japan — Constraints on magmatic and geothermal activities
Komori, Shogo (National Institute of Advanced Industrial Science and Technology (AIST)) | Takakura, Shinichi (National Institute of Advanced Industrial Science and Technology (AIST)) | Mitsuhata, Yuji (National Institute of Advanced Industrial Science and Technology (AIST)) | Yokota, Toshiyuki (National Institute of Advanced Industrial Science and Technology (AIST)) | Uchida, Toshihiro (National Institute of Advanced Industrial Science and Technology (AIST)) | Makino, Masahiko (National Institute of Advanced Industrial Science and Technology (AIST)) | Kato, Yosuke (Hanshin Consultants Co., Ltd.) | Yamamoto, Kazuya (Hanshin Consultants Co., Ltd.)
ABSTRACT Southwestern Hokkaido, Japan, is characterized by numerous Quaternary volcanoes and geothermal areas. At the same time, the region hosts various critical infrastructures, and there is a need to assess the impact of volcanic hazards on them. Geophysics could provide scientific clues for the hazard assessment by elucidating the abundance of subsurface magma. To clarify the resistivity structure from the crust to uppermost mantle of the Toya caldera, a representative Quaternary volcanic area, a wideband magnetotellurics survey of 117 points over land, sea, and lake areas, as well as 3D inversion, has been conducted. In combination with petrological and seismological findings, quantitative interpretation of the inverted model has found that conductive bodies in the uppermost mantle (14–68 ) suggest the presence of melts (0.25 vol%–3.4 vol%) or fluids (0.068 vol%–0.45 vol%). An extremely conductive body (<10 ) at a depth of approximately 3–14 km in the eastern geothermal area could be interpreted as a hydrothermal reservoir; below this body, the conductive column (1.8–15 ), rising from the uppermost mantle, suggests fluid upwelling. In contrast, high resistivity (>100 ) beneath Usu Volcano, the center of active volcanism, suggests that no mobile magma was present. A columnar-shaped region of slightly low resistivity (44 at minimum) is observed below the Toya caldera, which was inferred as cooling magma or an altered or heated upper crust attributed to past magma intrusion. A resistivity structure observed below the volcanic edifice is considered to reflect the steady state of the dormant volcanic system in this area, and there is likely no large amount of melt that would be deemed imminent for a caldera-forming eruption. This information could be a valuable scientific contribution to the volcanic hazard risk assessments currently being conducted in Japan.
- Geology > Geological Subdiscipline > Volcanology (1.00)
- Geology > Structural Geology > Tectonics > Plate Tectonics > Earthquake (0.46)
- Geophysics > Seismic Surveying (1.00)
- Geophysics > Electromagnetic Surveying (1.00)
Three-dimensional resistivity structure in Toya caldera region, Southwest Hokkaido, Japan — Constraints on magmatic and geothermal activities
Komori, Shogo (National Institute of Advanced Industrial Science and Technology (AIST)) | Takakura, Shinichi (National Institute of Advanced Industrial Science and Technology (AIST)) | Mitsuhata, Yuji (National Institute of Advanced Industrial Science and Technology (AIST)) | Yokota, Toshiyuki (National Institute of Advanced Industrial Science and Technology (AIST)) | Uchida, Toshihiro (National Institute of Advanced Industrial Science and Technology (AIST)) | Makino, Masahiko (National Institute of Advanced Industrial Science and Technology (AIST)) | Kato, Yosuke (Hanshin Consultants Co., Ltd.) | Yamamoto, Kazuya (Hanshin Consultants Co., Ltd.)
ABSTRACT Southwestern Hokkaido, Japan, is characterized by numerous Quaternary volcanoes and geothermal areas. At the same time, the region hosts various critical infrastructures, and there is a need to assess the impact of volcanic hazards on them. Geophysics could provide scientific clues for the hazard assessment by elucidating the abundance of subsurface magma. To clarify the resistivity structure from the crust to uppermost mantle of the Toya caldera, a representative Quaternary volcanic area, a wideband magnetotellurics survey of 117 points over land, sea, and lake areas, as well as 3D inversion, has been conducted. In combination with petrological and seismological findings, quantitative interpretation of the inverted model has found that conductive bodies in the uppermost mantle (14–68 ) suggest the presence of melts (0.25 vol%–3.4 vol%) or fluids (0.068 vol%–0.45 vol%). An extremely conductive body (<10 ) at a depth of approximately 3–14 km in the eastern geothermal area could be interpreted as a hydrothermal reservoir; below this body, the conductive column (1.8–15 ), rising from the uppermost mantle, suggests fluid upwelling. In contrast, high resistivity (>100 ) beneath Usu Volcano, the center of active volcanism, suggests that no mobile magma was present. A columnar-shaped region of slightly low resistivity (44 at minimum) is observed below the Toya caldera, which was inferred as cooling magma or an altered or heated upper crust attributed to past magma intrusion. A resistivity structure observed below the volcanic edifice is considered to reflect the steady state of the dormant volcanic system in this area, and there is likely no large amount of melt that would be deemed imminent for a caldera-forming eruption. This information could be a valuable scientific contribution to the volcanic hazard risk assessments currently being conducted in Japan.
- Geology > Geological Subdiscipline > Volcanology (1.00)
- Geology > Structural Geology > Tectonics > Plate Tectonics > Earthquake (0.46)
- Geophysics > Seismic Surveying (1.00)
- Geophysics > Electromagnetic Surveying (1.00)
QUANTIFYING THE INFLUENCE OF CLAY-BOUND WATER ON WAVE DISPERSION AND ATTENUATION SIGNATURES OF SHALE: AN EXPERIMENTAL STUDY
Long, Teng (University of Houston) | Qin, Xuan (University of Houston) | Wei, Qianqian (University of Houston) | Zhao, Luanxiao (Tongji University) | Wang, Yang (University of Houston) | Chen, Feng (University of Houston) | Myers, Michael T. (University of Houston) | Zheng, Yingcai (University of Houston) | Han, De-Hua (University of Houston)
Understanding the elastic and attenuation signatures of shales is of considerable interest for unconventional reservoir characterization and sealing capacity evaluation for CO2 sequestration and nuclear waste disposal. We conducted laboratory measurements on seven shale samples at seismic frequencies (2100 Hz) to study the effects of clay-bound water (CBW) on their wave dispersion and attenuation signatures. With Nuclear Magnetic Resonance (NMR) and helium porosimeter, the volume of CBW in the shale samples is quantified. The forced-oscillation measurement reveals that Youngs modulus exhibits a continuous dispersion trend from 2 to 100 Hz. The extensional attenuation shows a weak frequency- and pressure-dependence on effective pressure ranging from 5 to 35 MPa. The magnitude of extensional attenuation shows a positive correlation with CBW, with an R-square value of 0.89. It is found that 4% of CBW in the rock frame causes roughly a 5% modulus increase from 2 to 100 Hz. We adopt a constant Q model for assigning frequency-dependent bulk and shear moduli to the CBW in the rock physics modeling, which can fit the experimental data of modulus dispersion and attenuation well, indicating that both the bulk and shear moduli of CBW in shales might behave viscoelastically.
- Research Report > New Finding (0.50)
- Research Report > Experimental Study (0.40)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock > Shale (1.00)
- Geology > Mineral > Silicate (1.00)
- Geology > Geological Subdiscipline > Geomechanics (1.00)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Seismic Interpretation (0.67)
- North America > United States > New Mexico > San Juan Basin > San Juan Basin Field > Mancos Formation (0.99)
- North America > United States > Colorado > San Juan Basin > San Juan Basin Field > Mancos Formation (0.99)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Shale gas (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)
- (2 more...)