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Clay Mineral Alteration in Oil and Gas Fields: Integrated Analyses of Surface Expression, Soil Spectra, and X-Ray Diffraction Data Altération des minéraux d’argile dans les champs pétrolifères et gaziers: analyses intégrées de l’expression de surface, des spectres du sol et des données de diffraction aux rayons X
Susantoro T.M.a,b, Saepuloh A.b, Agustin F.c, Wikantika K.b, Harsolumakso A.H.b
a Research and Development Center for Oil and Gas Technology “LEMIGAS”, Ministry of Energy and Mineral Resources, Jakarta, 12230, Indonesia
b Center for Remote Sensing, Bandung Institute of Technology, Bandung, Indonesia
c Center for Geological Survey, Geological Agency, Ministry of Energy and Mineral Resources, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]©, Copyright © CASI.Subsurface hydrocarbon occurrences can be detected by clay mineral (CM) alteration at the surface as a consequence of hydrocarbon migration. This study analyzed CM alteration in an oil and gas (O&G) field in the West Tugu field, located in the northwest Java Basin of Indonesia. Landsat 8 OLI data acquired on 25 September 2015 and soil spectral reflectance (SSR) data recorded using analytical spectral devices (ASD) in March 2017 were processed using clay indices to analyze CM alteration. Soil samples from a field survey of the same area were also analyzed using X-ray diffraction (XRD) to identify their CM compositions. CM distribution was empirically modeled by integrating the SSR bands re-sampled to Landsat 8 OLI (SSRL) bands and the CM composition using the best subset regression method and regression analyses. The resulting model was applied to Landsat 8 OLI images to map the surface CM alteration. The results show that CM alteration observed in the O&G field is an indicator of hydrocarbon microseepage at the surface. These results can be used as a technique to identify prospective regions that contain hydrocarbons and differentiate from those that are barren, and could be useful for increasing the rate of drilling success.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Analytical spectral devices,Hydrocarbon migration,Integrated analysis,Mineral alterations,Oil and gas fields,Soil spectral reflectance,Surface expression,X-ray diffraction data[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][{‘$’: ‘This work was supported by the Ministry of Energy and Mineral Resources Republic of Indonesia under [Grant Number 3878.K/69/MEM/2015], and the Ministry of Research, Technology, and Higher Education Republic of Indonesia under World Class University (WCU) Program managed by Bandung Institute of Technology. The authors would like to thank Yudi Kuntoro, S.T. M.Si, Hariyanto, and Triwijaya who contributed to the fieldwork. We would also like to thank the sedimentology laboratory at the Exploration Division, Research and Development Center for Oil and Gas Technology (?LEMIGAS?) for helping us to analyze the clay minerals using XRD. The Center for Geological Survey, Geological Agency assisted with the measurement of soil spectral reflectance using ASD. We also thank the Geology and Geoinformation Working Group, and the Exploration Research and Development Coordinator of LEMIGAS, who supported this research from the beginning.’}, {‘$’: ‘The authors would like to thank Yudi Kuntoro, S.T. M.Si, Hariyanto, and Triwijaya who contributed to the fieldwork. We would also like to thank the sedimentology laboratory at the Exploration Division, Research and Development Center for Oil and Gas Technology (“LEMIGAS”) for helping us to analyze the clay minerals using XRD. The Center for Geological Survey, Geological Agency assisted with the measurement of soil spectral reflectance using ASD. We also thank the Geology and Geoinformation Working Group, and the Exploration Research and Development Coordinator of LEMIGAS, who supported this research from the beginning.’}][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1080/07038992.2020.1771174[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]