Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties
The Golfo San Jorge Basin is one of the most important hydrocarbon-producing basins in Argentina. A study of magnetic properties performed on drill cutting from an oil well drilled in this basin was carried out. The cutting samples, taken from an interval of about 400 m thickness, correspond to the...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03058719_v371_n1_p217_Mena |
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todo:paper_03058719_v371_n1_p217_Mena2023-10-03T15:22:02Z Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties Mena, M. Walther, A.M. concentration (composition) correlation electrical resistivity hydrocarbon exploration hydrocarbon migration hydrocarbon reservoir magnetic property magnetic susceptibility source rock Atlantic Ocean San Jorge Gulf The Golfo San Jorge Basin is one of the most important hydrocarbon-producing basins in Argentina. A study of magnetic properties performed on drill cutting from an oil well drilled in this basin was carried out. The cutting samples, taken from an interval of about 400 m thickness, correspond to the upper units of the Pozo D-129 Formation, the main source rock of the basin. Magnetic susceptibility measurements were made and rock-magnetism studies were conducted. Concentration indices of the different magnetic species determined were calculated based on isothermal remanent magnetization acquisition curves. A correlation analysis among magnetic properties, hydrocarbon content and well logs (sonic, neutron, density, induction, resistivity and photoelectric factor) was performed. Several kinds of significant correlations were found: a positive correlation between susceptibility and relative hydrocarbon content; a positive correlation between magnetic properties and porosities (especially good with the neutron log porosity); and a negative correlation between the concentration indices of some magnetic species (magnetite and pyrrhotite) and resistivity. Pyrrhotite could be directly related to the presence or migration of hydrocarbons through the porous units. The qualitative correlations between magnetic data and key petrophysical parameters such as porosity, along with the association of magnetic mineralogy to hydrocarbon presence or migration, suggest the potential usefulness of these techniques for subsurface exploration. © The Geological Society of London 2012. Fil:Mena, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Walther, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03058719_v371_n1_p217_Mena |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
concentration (composition) correlation electrical resistivity hydrocarbon exploration hydrocarbon migration hydrocarbon reservoir magnetic property magnetic susceptibility source rock Atlantic Ocean San Jorge Gulf |
| spellingShingle |
concentration (composition) correlation electrical resistivity hydrocarbon exploration hydrocarbon migration hydrocarbon reservoir magnetic property magnetic susceptibility source rock Atlantic Ocean San Jorge Gulf Mena, M. Walther, A.M. Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| topic_facet |
concentration (composition) correlation electrical resistivity hydrocarbon exploration hydrocarbon migration hydrocarbon reservoir magnetic property magnetic susceptibility source rock Atlantic Ocean San Jorge Gulf |
| description |
The Golfo San Jorge Basin is one of the most important hydrocarbon-producing basins in Argentina. A study of magnetic properties performed on drill cutting from an oil well drilled in this basin was carried out. The cutting samples, taken from an interval of about 400 m thickness, correspond to the upper units of the Pozo D-129 Formation, the main source rock of the basin. Magnetic susceptibility measurements were made and rock-magnetism studies were conducted. Concentration indices of the different magnetic species determined were calculated based on isothermal remanent magnetization acquisition curves. A correlation analysis among magnetic properties, hydrocarbon content and well logs (sonic, neutron, density, induction, resistivity and photoelectric factor) was performed. Several kinds of significant correlations were found: a positive correlation between susceptibility and relative hydrocarbon content; a positive correlation between magnetic properties and porosities (especially good with the neutron log porosity); and a negative correlation between the concentration indices of some magnetic species (magnetite and pyrrhotite) and resistivity. Pyrrhotite could be directly related to the presence or migration of hydrocarbons through the porous units. The qualitative correlations between magnetic data and key petrophysical parameters such as porosity, along with the association of magnetic mineralogy to hydrocarbon presence or migration, suggest the potential usefulness of these techniques for subsurface exploration. © The Geological Society of London 2012. |
| format |
SER |
| author |
Mena, M. Walther, A.M. |
| author_facet |
Mena, M. Walther, A.M. |
| author_sort |
Mena, M. |
| title |
Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| title_short |
Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| title_full |
Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| title_fullStr |
Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| title_full_unstemmed |
Rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| title_sort |
rock magnetic properties of drill cutting from a hydrocarbon exploratory well and their relationship to hydrocarbon presence and petrophysical properties |
| url |
http://hdl.handle.net/20.500.12110/paper_03058719_v371_n1_p217_Mena |
| work_keys_str_mv |
AT menam rockmagneticpropertiesofdrillcuttingfromahydrocarbonexploratorywellandtheirrelationshiptohydrocarbonpresenceandpetrophysicalproperties AT waltheram rockmagneticpropertiesofdrillcuttingfromahydrocarbonexploratorywellandtheirrelationshiptohydrocarbonpresenceandpetrophysicalproperties |
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