I remember years ago the president of BGP, Wenrong Xu, spoke at an SEG Annual Meeting on the topic of “From the East to West.” The presentation and its title referred to the fact that, at the time, the focus of geophysics in China was moving from the eastern regions to western regions where difficult surface conditions and subsurface structural complexity made seismic acquisition and imaging a challenge. I would like to put a spin on Xu's title and consider our current challenges and opportunities not from East to West or from West to East but from where West and East come together.
{"title":"President's Page: Where West and East come together","authors":"Xuri Huang","doi":"10.1190/tle42070450.1","DOIUrl":"https://doi.org/10.1190/tle42070450.1","url":null,"abstract":"I remember years ago the president of BGP, Wenrong Xu, spoke at an SEG Annual Meeting on the topic of “From the East to West.” The presentation and its title referred to the fact that, at the time, the focus of geophysics in China was moving from the eastern regions to western regions where difficult surface conditions and subsurface structural complexity made seismic acquisition and imaging a challenge. I would like to put a spin on Xu's title and consider our current challenges and opportunities not from East to West or from West to East but from where West and East come together.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48473107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Floyd Shale has a measured anisotropy that is consistent with transverse isotropy but with a magnitude of nearly 40% in Thomsen parameters γ and ε. The measured anisotropy is very strong, with a relation between γ and ε but not δ. This requires incorporating strong anisotropy while locating any microseismic events induced during fracture stimulation. It makes velocities deduced from sonic logs in deviated wellbores considerably different than vertical velocities. Floyd Shale looks very similar to Barnett Shale in many of its petrophysical properties except mineralogy. Production to date has been disappointing. We review key petrophysical and rock-physics properties of 103 ft of Floyd Shale recovered from the McShan Timberlands well. Based on these analyses, Floyd looks very promising (i.e., total organic carbon is in excess of 4 wt%, and porosities average 6%). However, mineralogy is dominated by clays (typically greater than 50 wt%), and Barnett has generally less than 29% clay. High-pressure mercury injection capillary pressure and nuclear magnetic resonance indicate that pore throats and pore bodies are small (i.e., less than 15 nm). Physical inspection of the recovered core reveals fresh slickensides (i.e., evidence of hydraulic fracturing) and compromised calcite-filled fractures. If this core is representative of Floyd Shale, we suspect that any hydrocarbons generated during maturation likely migrated during later tectonic fracturing.
{"title":"Anisotropy and petrophysics of Floyd Shale, Alabama","authors":"C. Sondergeld, C. Rai","doi":"10.1190/tle42070487.1","DOIUrl":"https://doi.org/10.1190/tle42070487.1","url":null,"abstract":"Floyd Shale has a measured anisotropy that is consistent with transverse isotropy but with a magnitude of nearly 40% in Thomsen parameters γ and ε. The measured anisotropy is very strong, with a relation between γ and ε but not δ. This requires incorporating strong anisotropy while locating any microseismic events induced during fracture stimulation. It makes velocities deduced from sonic logs in deviated wellbores considerably different than vertical velocities. Floyd Shale looks very similar to Barnett Shale in many of its petrophysical properties except mineralogy. Production to date has been disappointing. We review key petrophysical and rock-physics properties of 103 ft of Floyd Shale recovered from the McShan Timberlands well. Based on these analyses, Floyd looks very promising (i.e., total organic carbon is in excess of 4 wt%, and porosities average 6%). However, mineralogy is dominated by clays (typically greater than 50 wt%), and Barnett has generally less than 29% clay. High-pressure mercury injection capillary pressure and nuclear magnetic resonance indicate that pore throats and pore bodies are small (i.e., less than 15 nm). Physical inspection of the recovered core reveals fresh slickensides (i.e., evidence of hydraulic fracturing) and compromised calcite-filled fractures. If this core is representative of Floyd Shale, we suspect that any hydrocarbons generated during maturation likely migrated during later tectonic fracturing.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42357433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Altay Sansal, Sribharath Kainkaryam, Ben Lasscock, A. Valenciano
MDIO is a fully open-source data storage format that enables computational workflows for various high-dimensional energy data sets including seismic data and wind models. Designed to be efficient and flexible, MDIO provides interoperable software infrastructure with existing energy data standards. It leverages an open-source format called Zarr to enable data usage in the cloud and on-premises file systems. An overview of the data model and schema for MDIO is provided, and an open-source Python library developed to work with MDIO data is demonstrated. We explain how MDIO supports different computational workflows and discuss applications for data management, seismic imaging, machine learning, wind resource assessment, and real-time seismic visualization. Overall, MDIO gives researchers, practitioners, and developers in the energy sector a standardized and open approach to managing and sharing multidimensional energy data.
{"title":"MDIO: Open-source format for multidimensional energy data","authors":"Altay Sansal, Sribharath Kainkaryam, Ben Lasscock, A. Valenciano","doi":"10.1190/tle42070465.1","DOIUrl":"https://doi.org/10.1190/tle42070465.1","url":null,"abstract":"MDIO is a fully open-source data storage format that enables computational workflows for various high-dimensional energy data sets including seismic data and wind models. Designed to be efficient and flexible, MDIO provides interoperable software infrastructure with existing energy data standards. It leverages an open-source format called Zarr to enable data usage in the cloud and on-premises file systems. An overview of the data model and schema for MDIO is provided, and an open-source Python library developed to work with MDIO data is demonstrated. We explain how MDIO supports different computational workflows and discuss applications for data management, seismic imaging, machine learning, wind resource assessment, and real-time seismic visualization. Overall, MDIO gives researchers, practitioners, and developers in the energy sector a standardized and open approach to managing and sharing multidimensional energy data.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44723521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SEG President Ken Tubman discusses the future outlook of SEG and applied geophysics. He outlines how SEG could allow greater experimentation, the pros and cons of its current governance structure, and how members can best contribute to SEG's future.
{"title":"Seismic Soundoff: The future outlook of SEG and applied geophysics","authors":"A. Geary","doi":"10.1190/tle42070516.1","DOIUrl":"https://doi.org/10.1190/tle42070516.1","url":null,"abstract":"SEG President Ken Tubman discusses the future outlook of SEG and applied geophysics. He outlines how SEG could allow greater experimentation, the pros and cons of its current governance structure, and how members can best contribute to SEG's future.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47191801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The 3rd International Geomechanics Symposium (IGS2022) took place 7–10 November 2022 in Abu Dhabi. Focusing on the role of geomechanics in energy efficiency and sustainability, the technical program covered a range of technology applications including rock and in-situ stress characterization, natural fractures, faults, drilling, completion, stimulation, production, and reservoir engineering. It also showcased geomechanics applications in CO2 sequestration, hydrogen storage, and new energies.
{"title":"Symposium Review: 3rd International Geomechanics Symposium gathers experts from around the world","authors":"M. Badri, G. Han, Nasher M. AlBinHassan","doi":"10.1190/tle42070502.1","DOIUrl":"https://doi.org/10.1190/tle42070502.1","url":null,"abstract":"The 3rd International Geomechanics Symposium (IGS2022) took place 7–10 November 2022 in Abu Dhabi. Focusing on the role of geomechanics in energy efficiency and sustainability, the technical program covered a range of technology applications including rock and in-situ stress characterization, natural fractures, faults, drilling, completion, stimulation, production, and reservoir engineering. It also showcased geomechanics applications in CO2 sequestration, hydrogen storage, and new energies.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42110766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The concept of open and reproducible research is not entirely new to the field of geophysics, as evidenced by previous studies such as Fomel et al. (2013) . However, the advent of artificial intelligence (AI) and cloud computing have greatly simplified the sharing of technology and resources, and this has accelerated innovation ( Lowndes et al., 2017 ) and brought about a shift in the mindset of geoscientists. For the papers gathered in this special section, the authors made extensive use of open-source material in their underlying research, and they have, in turn, made their data, code, and software tools freely available.
正如Fomel等人之前的研究所证明的那样，开放和可重复研究的概念对地球物理学领域来说并不新鲜。（2013）。然而，人工智能（AI）和云计算的出现极大地简化了技术和资源的共享，这加速了创新（Lowndes et al.，2017），并带来了地球科学家心态的转变。对于本专题部分收集的论文，作者在其基础研究中广泛使用了开源材料，反过来，他们还免费提供了数据、代码和软件工具。
{"title":"Introduction to this special section: Digitalization in energy","authors":"V. Kazei, M. Sengupta","doi":"10.1190/tle42070456.1","DOIUrl":"https://doi.org/10.1190/tle42070456.1","url":null,"abstract":"The concept of open and reproducible research is not entirely new to the field of geophysics, as evidenced by previous studies such as Fomel et al. (2013) . However, the advent of artificial intelligence (AI) and cloud computing have greatly simplified the sharing of technology and resources, and this has accelerated innovation ( Lowndes et al., 2017 ) and brought about a shift in the mindset of geoscientists. For the papers gathered in this special section, the authors made extensive use of open-source material in their underlying research, and they have, in turn, made their data, code, and software tools freely available.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44946230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Resolution enhancement is often applied to poststack seismic data to obtain higher frequency or wider frequency bandwidth. This enhancement could help seismic interpreters in resolving thinner layers that may not be visible on the original seismic data. The seismic inversion method is the other way to interpret seismic data. The inversion process produces an impedance volume as a layer property that can be used not only for interpretation but also for reservoir characterization. This research aims to study whether vertical resolution enhancement of seismic data preserves the amplitudes and how enhancement affects seismic inversion results. The experiments in this research are performed on synthetic and real data. The modeling is carried out by generating zero-offset synthetic traces using a convolutional model. Meanwhile, real data processing is carried out at the North Sea Volve Data Village at the Ty and Hugin formations. The resolution of the seismic trace is enhanced using a spectral division operator. The inversion techniques used in this research are model-based inversion and sparse spike inversion. The seismic trace after vertical resolution enhancement shows that the separation of events can be improved by this procedure. Inversion of the original and of the enhanced traces shows that the enhancement process still allows obtaining reliable inversion results both from model-based and sparse spike methods; however, there is no significant difference between the inverted impedance using the original trace and enhanced traces. This research concludes that the enhancement process keeps the seismic amplitude preserved for inversion, but it barely improves the inversion result.
{"title":"Amplitude preservation and seismic inversion reliability post spectral shaping","authors":"W. Pranowo, I. Herawati","doi":"10.1190/tle42070492.1","DOIUrl":"https://doi.org/10.1190/tle42070492.1","url":null,"abstract":"Resolution enhancement is often applied to poststack seismic data to obtain higher frequency or wider frequency bandwidth. This enhancement could help seismic interpreters in resolving thinner layers that may not be visible on the original seismic data. The seismic inversion method is the other way to interpret seismic data. The inversion process produces an impedance volume as a layer property that can be used not only for interpretation but also for reservoir characterization. This research aims to study whether vertical resolution enhancement of seismic data preserves the amplitudes and how enhancement affects seismic inversion results. The experiments in this research are performed on synthetic and real data. The modeling is carried out by generating zero-offset synthetic traces using a convolutional model. Meanwhile, real data processing is carried out at the North Sea Volve Data Village at the Ty and Hugin formations. The resolution of the seismic trace is enhanced using a spectral division operator. The inversion techniques used in this research are model-based inversion and sparse spike inversion. The seismic trace after vertical resolution enhancement shows that the separation of events can be improved by this procedure. Inversion of the original and of the enhanced traces shows that the enhancement process still allows obtaining reliable inversion results both from model-based and sparse spike methods; however, there is no significant difference between the inverted impedance using the original trace and enhanced traces. This research concludes that the enhancement process keeps the seismic amplitude preserved for inversion, but it barely improves the inversion result.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":"90 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41278118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Modeling of the near surface plays a significant role in subsurface imaging, reservoir characterization, and monitoring. The Near-Surface Modeling and Imaging Workshop was created to address near-surface challenges in geoscience. The workshop has been held previously in 2014, 2016, and 2019. The latest instance of the workshop, 27–29 September 2022 in Muscat, Oman, continued the tradition.
{"title":"Workshop Review: Recent workshop explores near-surface modeling and imaging","authors":"Moosa Al-Jahdhami, A. Al-Shuhail","doi":"10.1190/tle42070506.1","DOIUrl":"https://doi.org/10.1190/tle42070506.1","url":null,"abstract":"Modeling of the near surface plays a significant role in subsurface imaging, reservoir characterization, and monitoring. The Near-Surface Modeling and Imaging Workshop was created to address near-surface challenges in geoscience. The workshop has been held previously in 2014, 2016, and 2019. The latest instance of the workshop, 27–29 September 2022 in Muscat, Oman, continued the tradition.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48823184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The third annual International Meeting for Applied Geoscience & Energy (IMAGE) will bring geoscientists from around the world together from 28 August to 1 September at the George R. Brown Convention Center in Houston, Texas.
{"title":"IMAGE Preview: Collaboration is key at IMAGE '23","authors":"Kelsy Taylor","doi":"10.1190/tle42070452.1","DOIUrl":"https://doi.org/10.1190/tle42070452.1","url":null,"abstract":"The third annual International Meeting for Applied Geoscience & Energy (IMAGE) will bring geoscientists from around the world together from 28 August to 1 September at the George R. Brown Convention Center in Houston, Texas.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43922508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In February 2023, the Society of Petroleum Engineers (SPE), together with the American Association of Petroleum Geologists (AAPG) and SEG, conducted a one-day symposium on the energy transition. The invitation-only event, hosted by the Canadian embassy in Washington, D.C., was designed to inform and engage policymakers and the policy community in the U.S. capital from the perspective of the engineers and geoscientists who currently work to supply 60% of the world's energy.
{"title":"Symposium Review: Dialogue on the future of energy: SPE/AAPG/SEG Energy in Transition Symposium in Washington, D.C.","authors":"","doi":"10.1190/tle42060434.1","DOIUrl":"https://doi.org/10.1190/tle42060434.1","url":null,"abstract":"In February 2023, the Society of Petroleum Engineers (SPE), together with the American Association of Petroleum Geologists (AAPG) and SEG, conducted a one-day symposium on the energy transition. The invitation-only event, hosted by the Canadian embassy in Washington, D.C., was designed to inform and engage policymakers and the policy community in the U.S. capital from the perspective of the engineers and geoscientists who currently work to supply 60% of the world's energy.","PeriodicalId":35661,"journal":{"name":"Leading Edge","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42429999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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