A. Cerchiari, R. Fukuchi, Baiyuan Gao, K. Hsiung, D. Jaeger, S. Kaneki, Jonas Keller, G. Kimura, S. Kuo, G. Lymer, Tatiana Maison, Ginta Motohashi, C. Regalla, D. Singleton, S. Yabe
Abstract. The first International Ocean Discovery Program (IODP) Core-Log-Seismic Integration at Sea (CLSI@Sea) workshop, held in January–February 2018, brought together an international, multidisciplinary team of 14 early-career scientists and a group of scientific mentors specialized in subduction zone processes at the Nankai Trough, one of the Earth's most active plate-subduction zones located off the southwestern coast of Japan. The goal of the workshop was to leverage existing core, log, and seismic data previously acquired during the IODP's Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE), to address the role of the deformation front of the Nankai accretionary prism in tsunamigenic earthquakes and slow slip in the shallow portion of the subduction interface. The CLSI@Sea workshop was organized onboard the D/V Chikyu concurrently with IODP Expedition 380, allowing workshop participants to interact with expedition scientists installing a long-term borehole monitoring system (LTBMS) at a site where the workshop's research was focused. Sedimentary cores from across the deformation front were brought onboard Chikyu, where they were made available for new description, sampling, and analysis. Logging data, drilling parameters, and seismic data were also available for investigation by workshop participants, who were granted access to Chikyu laboratory facilities and software to perform analyses at sea. Multi-thematic presentations facilitated knowledge transfer between the participants across field areas, and highlighted the value of multi-disciplinary collaboration that integrates processes across different spatiotemporal scales. The workshop resulted in the synthesis of existing geophysical, geologic, and geochemical data spanning IODP Sites C0006, C0007, C0011 and C0012 in the NanTroSEIZE area, the identification of key outstanding research questions in the field of shallow subduction zone seismogenesis, and fostered collaborative and individual research plans integrating new data analysis techniques and multidisciplinary approaches.
{"title":"IODP workshop: Core-Log Seismic Investigation at Sea – Integrating legacy data to address outstanding research questions in the Nankai Trough Seismogenic Zone Experiment","authors":"A. Cerchiari, R. Fukuchi, Baiyuan Gao, K. Hsiung, D. Jaeger, S. Kaneki, Jonas Keller, G. Kimura, S. Kuo, G. Lymer, Tatiana Maison, Ginta Motohashi, C. Regalla, D. Singleton, S. Yabe","doi":"10.5194/SD-24-93-2018","DOIUrl":"https://doi.org/10.5194/SD-24-93-2018","url":null,"abstract":"Abstract. The first International Ocean Discovery Program (IODP) Core-Log-Seismic\u0000Integration at Sea (CLSI@Sea) workshop, held in January–February 2018,\u0000brought together an international, multidisciplinary team of 14 early-career\u0000scientists and a group of scientific mentors specialized in subduction zone\u0000processes at the Nankai Trough, one of the Earth's most active\u0000plate-subduction zones located off the southwestern coast of Japan. The goal\u0000of the workshop was to leverage existing core, log, and seismic data\u0000previously acquired during the IODP's Nankai Trough Seismogenic Zone\u0000Experiment (NanTroSEIZE), to address the role of the deformation front of the\u0000Nankai accretionary prism in tsunamigenic earthquakes and slow slip in the\u0000shallow portion of the subduction interface. The CLSI@Sea workshop was\u0000organized onboard the D/V Chikyu concurrently with IODP Expedition\u0000380, allowing workshop participants to interact with expedition scientists\u0000installing a long-term borehole monitoring system (LTBMS) at a site where the\u0000workshop's research was focused. Sedimentary cores from across the\u0000deformation front were brought onboard Chikyu, where they were made\u0000available for new description, sampling, and analysis. Logging data, drilling\u0000parameters, and seismic data were also available for investigation by\u0000workshop participants, who were granted access to Chikyu laboratory\u0000facilities and software to perform analyses at sea. Multi-thematic presentations facilitated knowledge transfer between the\u0000participants across field areas, and highlighted the value of\u0000multi-disciplinary collaboration that integrates processes across different\u0000spatiotemporal scales. The workshop resulted in the synthesis of existing\u0000geophysical, geologic, and geochemical data spanning IODP Sites C0006,\u0000C0007, C0011 and C0012 in the NanTroSEIZE area, the identification of key\u0000outstanding research questions in the field of shallow subduction zone\u0000seismogenesis, and fostered collaborative and individual research plans\u0000integrating new data analysis techniques and multidisciplinary approaches.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"217 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77560656","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}
Abstract. Deep biosphere research has become one of the major scientific focuses in ocean drilling science. Increased scientific attention to microbiological research of the subseafloor environment raises the complications and concerns related to adherence to the Nagoya Protocol of the Convention on Biological Diversity (CBD). The Nagoya Protocol's implementation has prompted new legislation that could change international collaborative research on the geomicrobiology of the subseafloor. In this paper, we summarize the central points of the Nagoya Protocol on access and benefit-sharing (ABS) and discuss their relationship to ocean drilling research. In addition, we addressed the challenges faced by ocean drilling in complying with this international convention.
{"title":"Preparing for the new age of the Nagoya Protocol in scientific ocean drilling","authors":"Nan Xiao, N. Ahagon, Y. Kubo, H. Morioka","doi":"10.5194/SD-24-51-2018","DOIUrl":"https://doi.org/10.5194/SD-24-51-2018","url":null,"abstract":"Abstract. Deep biosphere research has become one of the major scientific focuses in\u0000ocean drilling science. Increased scientific attention to microbiological\u0000research of the subseafloor environment raises the complications and concerns\u0000related to adherence to the Nagoya Protocol of the Convention on Biological\u0000Diversity (CBD). The Nagoya Protocol's implementation has prompted new\u0000legislation that could change international collaborative research on the\u0000geomicrobiology of the subseafloor. In this paper, we summarize the central\u0000points of the Nagoya Protocol on access and benefit-sharing (ABS) and\u0000discuss their relationship to ocean drilling research. In addition, we\u0000addressed the challenges faced by ocean drilling in complying with this\u0000international convention.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"20 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84036967","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}
A. Bonneville, T. Cladouhos, S. Petty, A. Schultz, Carsten F Sørlie, H. Asanuma, G. Ó. Friðleifsson, C. Jaupart, G. de Natale
Abstract. The important scientific questions that will form the basis of a full proposal to drill a deep well to the ductile–brittle transition zone (T>400 ∘C) at Newberry Volcano, central Oregon state, USA, were discussed during an International Continental Drilling Program (ICDP) sponsored workshop held at the Oregon State University-Cascades campus in Bend, Oregon, from 10 to 13 September 2017. Newberry Volcano is one of the largest geothermal heat reservoirs in the USA and has been extensively studied for the last 40 years. The Newberry Deep Drilling Project (NDDP) will be located at an idle geothermal exploration well, NWG 46-16, drilled in 2008, 3500 m deep and 340–374 ∘C at bottom, which will be deepened another 1000 to 1300 m to reach 500 ∘C. The workshop concluded by setting ambitious goals for the NDDP: (1) test the enhanced geothermal system (EGS) above the critical point of water, (2) collect samples of rocks within the brittle–ductile transition, (3) investigate volcanic hazards, (4) study magmatic geomechanics, (5) calibrate geophysical imaging techniques, and (6) test technology for drilling, well completion, and geophysical monitoring in a very high-temperature environment. Based on these recommendations, a full drilling proposal was submitted in January 2018 to the ICDP for deepening an existing well. The next steps will be to continue building a team with project, technology, and investment partners to make the NDDP a reality.
{"title":"The Newberry Deep Drilling Project (NDDP) workshop","authors":"A. Bonneville, T. Cladouhos, S. Petty, A. Schultz, Carsten F Sørlie, H. Asanuma, G. Ó. Friðleifsson, C. Jaupart, G. de Natale","doi":"10.5194/SD-24-79-2018","DOIUrl":"https://doi.org/10.5194/SD-24-79-2018","url":null,"abstract":"Abstract. The important scientific questions that will form the basis of a full\u0000proposal to drill a deep well to the ductile–brittle transition zone\u0000(T>400 ∘C) at Newberry Volcano, central Oregon\u0000state, USA, were discussed during an International Continental Drilling\u0000Program (ICDP) sponsored workshop held at the Oregon State\u0000University-Cascades campus in Bend, Oregon, from 10 to 13 September 2017.\u0000Newberry Volcano is one of the largest geothermal heat reservoirs in the USA\u0000and has been extensively studied for the last 40 years. The Newberry Deep\u0000Drilling Project (NDDP) will be located at an idle geothermal exploration\u0000well, NWG 46-16, drilled in 2008, 3500 m deep and 340–374 ∘C at\u0000bottom, which will be deepened another 1000 to 1300 m to reach\u0000500 ∘C. The workshop concluded by setting ambitious goals for\u0000the NDDP: (1) test the enhanced geothermal system (EGS) above the critical\u0000point of water, (2) collect samples of rocks within the brittle–ductile\u0000transition, (3) investigate volcanic hazards, (4) study magmatic\u0000geomechanics, (5) calibrate geophysical imaging techniques, and (6) test\u0000technology for drilling, well completion, and geophysical monitoring in a\u0000very high-temperature environment. Based on these recommendations, a full\u0000drilling proposal was submitted in January 2018 to the ICDP for deepening an\u0000existing well. The next steps will be to continue building a team with\u0000project, technology, and investment partners to make the NDDP a reality.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"38 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88960261","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}
R. McKay, N. Exon, D. Müller, K. Gohl, M. Gurnis, A. Shevenell, S. Henrys, F. Inagaki, D. Pandey, J. Whiteside, T. van de Flierdt, T. Naish, V. Heuer, Y. Morono, M. Coffin, M. Godard, L. Wallace, S. Kodaira, P. Bijl, J. Collot, G. Dickens, B. Dugan, A. Dunlea, R. Hackney, M. Ikehara, M. Jutzeler, L. McNeill, S. Naik, T. Noble, B. Opdyke, I. Pecher, L. Stott, G. Uenzelmann‐Neben, Yatheesh Vadakkeykath, U. Wortmann
Abstract. An International Ocean Discovery Program (IODP) workshop was held at Sydney University, Australia, from 13 to 16 June 2017 and was attended by 97 scientists from 12 countries. The aim of the workshop was to investigate future drilling opportunities in the eastern Indian Ocean, southwestern Pacific Ocean, and the Indian and Pacific sectors of the Southern Ocean. The overlying regional sedimentary strata are underexplored relative to their Northern Hemisphere counterparts, and thus the role of the Southern Hemisphere in past global environmental change is poorly constrained. A total of 23 proposal ideas were discussed, with ∼ 12 of these deemed mature enough for active proposal development or awaiting scheduled site survey cruises. Of the remaining 11 proposals, key regions were identified where fundamental hypotheses are testable by drilling, but either site surveys are required or hypotheses need further development. Refinements are anticipated based upon regional IODP drilling in 2017/2018, analysis of recently collected site survey data, and the development of site survey proposals. We hope and expect that this workshop will lead to a new phase of scientific ocean drilling in the Australasian region in the early 2020s.
{"title":"Developing community-based scientific priorities and new drilling proposals in the southern Indian and southwestern Pacific oceans","authors":"R. McKay, N. Exon, D. Müller, K. Gohl, M. Gurnis, A. Shevenell, S. Henrys, F. Inagaki, D. Pandey, J. Whiteside, T. van de Flierdt, T. Naish, V. Heuer, Y. Morono, M. Coffin, M. Godard, L. Wallace, S. Kodaira, P. Bijl, J. Collot, G. Dickens, B. Dugan, A. Dunlea, R. Hackney, M. Ikehara, M. Jutzeler, L. McNeill, S. Naik, T. Noble, B. Opdyke, I. Pecher, L. Stott, G. Uenzelmann‐Neben, Yatheesh Vadakkeykath, U. Wortmann","doi":"10.5194/SD-24-61-2018","DOIUrl":"https://doi.org/10.5194/SD-24-61-2018","url":null,"abstract":"Abstract. An International Ocean Discovery Program (IODP) workshop\u0000was held at Sydney University, Australia, from 13 to 16 June 2017 and was\u0000attended by 97 scientists from 12 countries. The aim of the workshop was to\u0000investigate future drilling opportunities in the eastern Indian Ocean,\u0000southwestern Pacific Ocean, and the Indian and Pacific sectors of the Southern\u0000Ocean. The overlying regional sedimentary strata are underexplored relative\u0000to their Northern Hemisphere counterparts, and thus the role of the Southern\u0000Hemisphere in past global environmental change is poorly constrained. A\u0000total of 23 proposal ideas were discussed, with ∼ 12 of these\u0000deemed mature enough for active proposal development or awaiting scheduled\u0000site survey cruises. Of the remaining 11 proposals, key regions were\u0000identified where fundamental hypotheses are testable by drilling, but either\u0000site surveys are required or hypotheses need further development.\u0000Refinements are anticipated based upon regional IODP drilling in 2017/2018,\u0000analysis of recently collected site survey data, and the development of site\u0000survey proposals. We hope and expect that this workshop will lead to a new\u0000phase of scientific ocean drilling in the Australasian region in the early\u00002020s.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"62 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89331110","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}
R. Levy, G. Dunbar, M. Vandergoes, Jamie D. Howarth, T. Kingan, A. Pyne, Grant Brotherston, M. Clarke, Bob Dagg, M. Hill, Evan Kenton, Steve Little, Darcy Mandeno, C. Moy, P. Muldoon, P. Doyle, Conrad Raines, P. Rutland, D. Strong, M. Terezow, L. Cochrane, R. Cossu, S. Fitzsimons, F. Florindo, Alexander L. Forrest, A. Gorman, Darrell S. Kaufman, Min Kyung Lee, Xun Li, P. Lurcock, N. McKay, F. Nelson, J. Purdie, H. Roop, S. Schladow, A. Sood, P. Upton, Sharon L. Walker, Gary S. Wilson
Abstract. A new annually resolved sedimentary record of Southern Hemisphere mid-latitude hydroclimate was recovered from Lake Ohau, South Island, New Zealand, in March 2016. The Lake Ohau Climate History (LOCH) project acquired cores from two sites (LOCH-1 and -2) that preserve sequences of laminated mud that accumulated since the lake formed ∼ 17 000 years ago. Cores were recovered using a purpose-built barge and drilling system designed to recover soft sediment from thick sedimentary sequences in lake systems up to 150 m deep. This system can be transported in two to three 40 ft long shipping containers and is suitable for use in a range of geographic locations. A comprehensive suite of data has been collected from the sedimentary sequence using state-of-the-art analytical equipment and techniques. These new observations of past environmental variability augment the historical instrumental record and are currently being integrated with regional climate and hydrological modelling studies to explore causes of variability in extreme/flood events over the past several millennia.
{"title":"A high-resolution climate record spanning the past 17 000 years recovered from Lake Ohau, South Island, New Zealand","authors":"R. Levy, G. Dunbar, M. Vandergoes, Jamie D. Howarth, T. Kingan, A. Pyne, Grant Brotherston, M. Clarke, Bob Dagg, M. Hill, Evan Kenton, Steve Little, Darcy Mandeno, C. Moy, P. Muldoon, P. Doyle, Conrad Raines, P. Rutland, D. Strong, M. Terezow, L. Cochrane, R. Cossu, S. Fitzsimons, F. Florindo, Alexander L. Forrest, A. Gorman, Darrell S. Kaufman, Min Kyung Lee, Xun Li, P. Lurcock, N. McKay, F. Nelson, J. Purdie, H. Roop, S. Schladow, A. Sood, P. Upton, Sharon L. Walker, Gary S. Wilson","doi":"10.5194/SD-24-41-2018","DOIUrl":"https://doi.org/10.5194/SD-24-41-2018","url":null,"abstract":"Abstract. A new annually resolved sedimentary record of Southern\u0000Hemisphere mid-latitude hydroclimate was recovered from Lake Ohau, South\u0000Island, New Zealand, in March 2016. The Lake Ohau Climate History (LOCH)\u0000project acquired cores from two sites (LOCH-1 and -2) that preserve sequences\u0000of laminated mud that accumulated since the lake formed ∼ 17 000 years\u0000ago. Cores were recovered using a purpose-built barge and drilling system\u0000designed to recover soft sediment from thick sedimentary sequences in lake\u0000systems up to 150 m deep. This system can be transported in two to three\u000040 ft long shipping containers and is suitable for use in a range of\u0000geographic locations. A comprehensive suite of data has been collected from\u0000the sedimentary sequence using state-of-the-art analytical equipment and\u0000techniques. These new observations of past environmental variability augment\u0000the historical instrumental record and are currently being integrated with\u0000regional climate and hydrological modelling studies to explore causes of\u0000variability in extreme/flood events over the past several millennia.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"44 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90552450","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}
Abstract. The IODP-PAGES Workshop on Global Monsoon in Long-term Records was held on 7–9 September 2017, in Shanghai, China. Forty-eight scientists from 12 countries exchanged scientific findings from the seven recent IODP monsoon-related expeditions (see Table 1), discussed future research directions, and strongly recommended that monsoon system behavior be included in a future IODP initial science plan because it is one of the most active factors in the global climate system and crucially influences the global hydrological cycle.
{"title":"Global monsoon and ocean drilling","authors":"Pinxian Wang, R. Tada, S. Clemens","doi":"10.5194/SD-24-87-2018","DOIUrl":"https://doi.org/10.5194/SD-24-87-2018","url":null,"abstract":"Abstract. The IODP-PAGES Workshop on Global Monsoon in Long-term Records was held on\u00007–9 September 2017, in Shanghai, China. Forty-eight scientists from 12\u0000countries exchanged scientific findings from the seven recent IODP\u0000monsoon-related expeditions (see Table 1), discussed future research\u0000directions, and strongly recommended that monsoon system behavior be included\u0000in a future IODP initial science plan because it is one of the most active\u0000factors in the global climate system and crucially influences the global\u0000hydrological cycle.\u0000","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"13 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87920208","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}
J. Lofi, David Smith, C. Delahunty, E. Le Ber, L. Brun, G. Henry, J. Paris, S. Tikoo, W. Zylberman, P. Pezard, B. Célérier, D. Schmitt, C. Nixon
Abstract. Expedition 364 was a joint IODP and ICDP mission-specific platform (MSP) expedition to explore the Chicxulub impact crater buried below the surface of the Yucatán continental shelf seafloor. In April and May 2016, this expedition drilled a single borehole at Site M0077 into the crater's peak ring. Excellent quality cores were recovered from ∼505 to ∼1335 m below seafloor (m b.s.f.), and high-resolution open hole logs were acquired between the surface and total drill depth. Downhole logs are used to image the borehole wall, measure the physical properties of rocks that surround the borehole, and assess borehole quality during drilling and coring operations. When making geological interpretations of downhole logs, it is essential to be able to distinguish between features that are geological and those that are operation-related. During Expedition 364 some drilling-induced and logging-related features were observed and include the following: effects caused by the presence of casing and metal debris in the hole, logging-tool eccentering, drilling-induced corkscrew shape of the hole, possible re-magnetization of low-coercivity grains within sedimentary rocks, markings on the borehole wall, and drilling-induced changes in the borehole diameter and trajectory.
摘要探险364是IODP和ICDP任务专用平台(MSP)联合探险，探索埋藏在Yucatán大陆架海底表面以下的希克苏鲁伯撞击坑。2016年4月和5月，探险队在M0077地点钻了一个孔，进入火山口的峰环。在海底以下~ 505 ~ ~ 1335 m (m b.s.f.f)处回收了优质岩心，并获得了地表和总钻深之间的高分辨率裸眼测井数据。井下测井用于成像井壁，测量井眼周围岩石的物理性质，并在钻井和取心过程中评估井眼质量。在对井下测井资料进行地质解释时，必须能够区分地质特征和与作业相关的特征。在远征364期间，观察到一些钻井引起的和测井相关的特征，包括:井中套管和金属碎片的存在引起的影响，测井工具偏心，钻井引起的井的螺旋形状，沉积岩中低矫顽力颗粒可能的再磁化，井壁上的标记，以及钻井引起的井径和轨迹的变化。
{"title":"Drilling-induced and logging-related features illustrated from IODP–ICDP Expedition 364 downhole logs and borehole imaging tools","authors":"J. Lofi, David Smith, C. Delahunty, E. Le Ber, L. Brun, G. Henry, J. Paris, S. Tikoo, W. Zylberman, P. Pezard, B. Célérier, D. Schmitt, C. Nixon","doi":"10.5194/SD-24-1-2018","DOIUrl":"https://doi.org/10.5194/SD-24-1-2018","url":null,"abstract":"Abstract. Expedition 364 was a joint IODP and ICDP mission-specific platform (MSP) expedition to explore the Chicxulub impact crater buried below the surface of the Yucatán continental shelf seafloor. In April and May 2016, this expedition drilled a single borehole at Site M0077 into the crater's peak ring. Excellent quality cores were recovered from ∼505 to ∼1335 m below seafloor (m b.s.f.), and high-resolution open hole logs were acquired between the surface and total drill depth. Downhole logs are used to image the borehole wall, measure the physical properties of rocks that surround the borehole, and assess borehole quality during drilling and coring operations. When making geological interpretations of downhole logs, it is essential to be able to distinguish between features that are geological and those that are operation-related. During Expedition 364 some drilling-induced and logging-related features were observed and include the following: effects caused by the presence of casing and metal debris in the hole, logging-tool eccentering, drilling-induced corkscrew shape of the hole, possible re-magnetization of low-coercivity grains within sedimentary rocks, markings on the borehole wall, and drilling-induced changes in the borehole diameter and trajectory.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"71 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83111161","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}
Pub Date : 2018-03-30DOI: 10.5772/INTECHOPEN.75785
Jun Li, Yulong Yang, B. Guo, Gong-hui Liu
Gas drilling technology has been widely promoted and applied in recent years. Known for being capable of discovering and protecting reservoirs, improving the penetration rate and avoiding loss circulation, two key issues of gas drilling still need to be addressed. First, a more accurate way of determining the gas injection rate is needful. In this text, we present a modified mathematical model for predicting the optimum range of gas injection rate required to balance the borehole cleaning and well-integrity issues. The optimum gas injection rate should be sought between the minimum value required for hole cleaning and the maximum permissible value to avoid hole erosion. Good consistency between the model prediction and field problem-free nitrogen gas injection rate indicates the reliability of the proposed model. Second, the problem of environmental pollution and wasting of resources caused by direct discharging or combustion of the returned gas is to be solved. To address the latter issue, we introduce a new technology of gas recycling system (GRS). Our research group has carried out a comprehensive investigation, including integration technological process, cuttings transport analysis, separation and filter equipment selection, and control system design. The feasibility of GRS has been verified through an open-loop pilot test.
{"title":"New Development of Air and Gas Drilling Technology","authors":"Jun Li, Yulong Yang, B. Guo, Gong-hui Liu","doi":"10.5772/INTECHOPEN.75785","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.75785","url":null,"abstract":"Gas drilling technology has been widely promoted and applied in recent years. Known for being capable of discovering and protecting reservoirs, improving the penetration rate and avoiding loss circulation, two key issues of gas drilling still need to be addressed. First, a more accurate way of determining the gas injection rate is needful. In this text, we present a modified mathematical model for predicting the optimum range of gas injection rate required to balance the borehole cleaning and well-integrity issues. The optimum gas injection rate should be sought between the minimum value required for hole cleaning and the maximum permissible value to avoid hole erosion. Good consistency between the model prediction and field problem-free nitrogen gas injection rate indicates the reliability of the proposed model. Second, the problem of environmental pollution and wasting of resources caused by direct discharging or combustion of the returned gas is to be solved. To address the latter issue, we introduce a new technology of gas recycling system (GRS). Our research group has carried out a comprehensive investigation, including integration technological process, cuttings transport analysis, separation and filter equipment selection, and control system design. The feasibility of GRS has been verified through an open-loop pilot test.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"47 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2018-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73071207","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}
M. Pistone, O. Müntener, L. Ziberna, G. Hetényi, A. Zanetti
Abstract. The Ivrea–Verbano Zone is the most complete, time-integrated crust–upper mantle archive in the world. It is a unique target for assembling data on the deep crust and the Moho transition zone and testing several hypotheses of formation, evolution, and modification of the continental crust through space and time across the Earth. The ICDP workshop Drilling the Ivrea–Verbano zonE (DIVE), held in Baveno, Italy, from 1 to 5 May 2017, focused on the scientific objectives and the technical aspects of drilling and sampling in the Ivrea–Verbano Zone at depth. A total of 47 participants from 9 countries with a wide variety of scientific and/or drilling expertise attended the meeting. Discussion on the proposed targets sharpened the main research lines and led to working groups and the necessary technical details to compile the full drilling proposal. The participants of the workshop concluded that four drilling operations in the Val Sesia and Val d'Ossola crustal sections represent the scientifically most promising solution to achieve the major goals within DIVE to unravel the physico-chemical properties and architecture of the lower continental crust towards the crust–mantle (Moho) transition zone.
{"title":"Report on the ICDP workshop DIVE (Drilling the Ivrea–Verbano zonE)","authors":"M. Pistone, O. Müntener, L. Ziberna, G. Hetényi, A. Zanetti","doi":"10.5194/SD-23-47-2017","DOIUrl":"https://doi.org/10.5194/SD-23-47-2017","url":null,"abstract":"Abstract. The Ivrea–Verbano Zone is the most complete, time-integrated crust–upper mantle archive in the world. It is a unique target for assembling data on the deep crust and the Moho transition zone and testing several hypotheses of formation, evolution, and modification of the continental crust through space and time across the Earth. The ICDP workshop Drilling the Ivrea–Verbano zonE (DIVE), held in Baveno, Italy, from 1 to 5 May 2017, focused on the scientific objectives and the technical aspects of drilling and sampling in the Ivrea–Verbano Zone at depth. A total of 47 participants from 9 countries with a wide variety of scientific and/or drilling expertise attended the meeting. Discussion on the proposed targets sharpened the main research lines and led to working groups and the necessary technical details to compile the full drilling proposal. The participants of the workshop concluded that four drilling operations in the Val Sesia and Val d'Ossola crustal sections represent the scientifically most promising solution to achieve the major goals within DIVE to unravel the physico-chemical properties and architecture of the lower continental crust towards the crust–mantle (Moho) transition zone.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"23 1","pages":"47-56"},"PeriodicalIF":1.2,"publicationDate":"2017-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78975552","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}
B. Orcutt, Markus Bergenthal, T. Freudenthal, David Smith, Marvin D. Lilley, L. Schnieders, Sophie Green, G. L. Früh-Green
Abstract. IODP Expedition 357 utilized seabed drills for the first time in the history of the ocean drilling program, with the aim of collecting intact sequences of shallow mantle core from the Atlantis Massif to examine serpentinization processes and the deep biosphere. This novel drilling approach required the development of a new remote seafloor system for delivering synthetic tracers during drilling to assess for possible sample contamination. Here, we describe this new tracer delivery system, assess the performance of the system during the expedition, provide an overview of the quality of the core samples collected for deep biosphere investigations based on tracer concentrations, and make recommendations for future applications of the system.
{"title":"Contamination tracer testing with seabed drills: IODP Expedition 357","authors":"B. Orcutt, Markus Bergenthal, T. Freudenthal, David Smith, Marvin D. Lilley, L. Schnieders, Sophie Green, G. L. Früh-Green","doi":"10.5194/SD-23-39-2017","DOIUrl":"https://doi.org/10.5194/SD-23-39-2017","url":null,"abstract":"Abstract. IODP Expedition 357 utilized seabed drills for the first time in the history of the ocean drilling program, with the aim of collecting intact sequences of shallow mantle core from the Atlantis Massif to examine serpentinization processes and the deep biosphere. This novel drilling approach required the development of a new remote seafloor system for delivering synthetic tracers during drilling to assess for possible sample contamination. Here, we describe this new tracer delivery system, assess the performance of the system during the expedition, provide an overview of the quality of the core samples collected for deep biosphere investigations based on tracer concentrations, and make recommendations for future applications of the system.","PeriodicalId":51840,"journal":{"name":"Scientific Drilling","volume":"16 5 1","pages":"39-46"},"PeriodicalIF":1.2,"publicationDate":"2017-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82865439","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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