Alain Bonneville | Oregon State University (original) (raw)
Papers by Alain Bonneville
Scientific Drilling
The important scientific questions that will form the basis of a full proposal to drill a deep we... more 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 hightemperature 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.
Eos, Transactions American Geophysical Union
International Journal of Greenhouse Gas Control, 2016
The objective of the FutureGen 2.0 Project was to demonstrate, at the commercial scale, the techn... more The objective of the FutureGen 2.0 Project was to demonstrate, at the commercial scale, the technical feasibility of implementing carbon capture and storage in a deep saline formation in Illinois, USA. Over approximately 5 years, the FutureGen Industrial Alliance, Inc. (Alliance) conducted a detailed siteselection process and identified a site for carbon sequestration storage in Morgan County, Illinois. A comprehensive geologic and hydrologic characterization of the storage site was conducted and included the collection of seismic data and the drilling and characterization of a stratigraphic borehole. The characterization data provided critical input for developing a site-specific conceptual model and subsequent numerical modeling simulations. The modeling simulations, coupled with upstream designs of the pipeline and power plant, supported the development of a detailed design that included the injection wells and associated control and monitoring infrastructure. The Alliance used all of these data to develop the required documentation to support the applications for four underground injection control (UIC) permits (one for each proposed well). In August 2014, the U.S. Environmental Protection Agency issued four, first-of-their-kind, Class VI UIC permits for carbon sequestration in the United States to the Alliance. This equated to one permit per planned injection well. The information and data generated under this project have been made publicly available through reports and publications, including this journal and others.
Les Techniques De L Industrie Minerale, 2002
The characteristics of intraplate volcanism in the Pacific are very diverse. There is probably mo... more The characteristics of intraplate volcanism in the Pacific are very diverse. There is probably more than 106 seamounts on the Pacific seafloor created by past or present volcanism. Among them, a number are organized in alignments, some of which showing increasing ages along the track in the direction of plate motion. Sorting the latter by their track duration further shows
ABSTRACT The theory of upwelling mantle plumes can explain most of the characteristics of hotspot... more ABSTRACT The theory of upwelling mantle plumes can explain most of the characteristics of hotspots and their associated volcanism. Surface manifestations along the hotspot track such as topography due to volcanic activity are usually accompagnied by a large-wavelength feature: the hotspot swell. This broad topographic high is generally considered as the consequence of the presence of hot material under the oceanic lithosphere. The precise estimation of the amplitude and wavelength of a swell is long and fastidious, and all existing methods are based on the systematic study of topographic profiles transversal to the chain alignment. We have developed a filtering method allowing the direct calculation of the swell on 2D bathymetric grids. Global topography is obtained by correcting bathymetry from thermal subsidence due to the cooling of the oceanic seafloor away from mid-ocean ridges. Our filtering method then allows the separation of the swell and volcanism contributions to this topography. Flexure associated to these two manifestations is computed in Fourier space with a 3D elastic plate model. Temporal variations of the magma volume flux produced by the hotspot are then calculated by the mean of translating windows along the chain alignment. The same procedure is then applied to the isolated swell. Both volume fluxes are correlated through time, and present two behaviours with different time scales: 1) an increasing tendency from 43.1 Ma until now, reflecting an increasing in the hotspot activity through time and 2) oscillations with a shorter time period of about 5 My, which could be the manifestation of solitary waves propagation in the plume conduit. The swell amplitude becomes negligible for ages older than 35 Ma, due to the cumulated effect of conductive heat loss and advection of the plume hot material by mantle convection. Correlation between the volume flux associated to the swell (characteristic of the plume behaviour) and the volume flux associated to volcanism (material produced by the hotspot) shows that the latter can be considered as a relevant parameter of the temporal evolution of the hotspot behaviour. The use of this parameter eliminates the error due to the choice of the subsidence model, and allows to analyse the evolution all along the chain, without age restriction.
Geophysical Research Letters, Sep 1, 1996
The south central Pacific Ocean is well covered with satellite-derived gravity data (ERS-1, GEOSA... more The south central Pacific Ocean is well covered with satellite-derived gravity data (ERS-1, GEOSAT, SEASAT and Topex/Poseidon) but sparsely covered with shipboard depth soundings and gravity measurements. We present an improved method of bathymetric prediction from gravity using both shipboard and satellite data. We employ a compensation model with two layers for the crust to attempt bathymetric prediction using a 2-D spectral approach. Parameters such as flexural wavelength and crustal density are the major constraints for the model. They are determined on a limited area by minimizing the difference between observed bathymetry ship profiles and the model predictions. Then, in regions where there are no ship data, these parameters are used to predict the seafloor topography from ship gravity data combined with satellite grid points. The prediction has an horizontal resolution limit of 8 km and the depth error is usually less than 300 m. This method is better constrained than the ones using satellite altimetry data only. Results on the Western Tuamotu archipelago and on Marquesas Islands, French Polynesia, are presented and discussed.
Journal of Volcanology and Geothermal Research, 1985
Water Resources Management, 2015
One important issue in the storage of large volumes of fluids, mainly water and CO 2 , in the dee... more One important issue in the storage of large volumes of fluids, mainly water and CO 2 , in the deep subsurface is to determine the resulting field-scale-induced displacements and consequences of overpressures on the mechanical integrity of the storage reservoir and surroundings. A quantifiable estimation of displacement can be made by combining the robust, cost-effective, and repeatable geophysical techniques of micro-gravimetry, differential global positioning system (DGPS), and differential synthetic aperture radar interferometry (DInSAR). These techniques were field tested and evaluated for the first time on an active large-volume aquifer storage and recovery (ASR) project in Pendleton, Oregon, USA, where three ASR wells are injecting up to 1.9 million m 3 year −1 into basalt aquifers to a depth of about 150 m. Injection and recovery of water at the wells are accompanied by significant gravity anomalies and vertical deformation of the ground surface localized to the immediate surroundings of the injection wells as evidenced by DGPS and gravity measurements collected in 2011. At a larger scale, and between 2011 and 2013, DInSAR monitoring of the Pendleton area shows subcentimetric deformation in the western part of the city and close to the injection locations associated with ASR cycle. Deformations are found to be temporally out phased with the injection and recovery events due to complex groundwater flow. A numerical simulation of the effect of the water injection gives results in good agreement with the observations and confirms the validity of the approach, which could be deployed in similar geological contexts to look at the mechanical effects of water and gas injections.
Green Chem., 2015
A reversible CO2-triggered volume expansion significantly lowers the fracture initiation pressure... more A reversible CO2-triggered volume expansion significantly lowers the fracture initiation pressure in highly impermeable igneous rock as compared to conventional fracturing fluids.
[Français] Des mesures du flux de chaleur ont été acquises suivant deux profils perpendiculaires ... more [Français] Des mesures du flux de chaleur ont été acquises suivant deux profils perpendiculaires à la ride des Mascareignes, Océan Indien, par le NO Marion-Dufresne, lors de la campagne MASCAFLUX 1992, dans le but de contraindre les modèles de comportement de la lithosphère sous cette structure. Le relief volcanique de cette ride asismique est dû au fonctionnement du point chaud asthénosphérique qui est responsable du volcanisme actuel de l'ile de la Réunion. Après correction des effets de la sédimentation, le flux de chaleur présente des variations à courte (< 100 km) et moyenne longueur d'onde (= 400 km). Les premières sont à associer à des remontées du socle sous la couverture sédimentaire, ainsi qu'à des effets de circulation de fluides le long des pentes des reliefs, alors que les secondes sont manifestement associées à la présence de la ride. L'ensemble des valeurs, en moyenne 8 à 10 mW.m-2 plus élevées que la valeur théorique du flux déduite du refroidissem...
Eos, Transactions American Geophysical Union, 2005
10th International Congress of the Brazilian Geophysical Society & EXPOGEF 2007, Rio de Janeiro, Brazil, 19-23 November 2007, 2007
ABSTRACT New heat flow data have been collected along two profiles perpendicular to the Mascarene... more ABSTRACT New heat flow data have been collected along two profiles perpendicular to the Mascarene ridge, Indian Ocean, by the French RV Marion-Dufresne (Mascaflux 92 cruise). The volcanic relief of the aseismic ridge is due to an asthenospheric mantle plume, now responsible for the active volcanism of Reunion Island. After being corrected for the effects of sedimentation, the heat flow data exhibit short (<100 km) and middle wavelength variations (= 400 km). The former can be associated with the effects of basement relief as well as seafloor topographic effects. The latter are clearly linked to the ridge. The entire high quality data set has a mean value 8 to 10 mW.m(-2) higher than the theoretical value deduced from the cooling of the lithosphere with age. This could be related to the generally elevated basement topography (mean anomalous height similar to 800 m) extending largely beyond the limits of the profiles. This topographic high is also associated to a -40 mgal free air gravity anomaly. A model of mantle plume-lithosphere interaction where both the lithosphere is thinned, and a dynamical uplift exists from below, is suggested to explain all the geophysical observations.
Scientific Drilling
The important scientific questions that will form the basis of a full proposal to drill a deep we... more 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 hightemperature 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.
Eos, Transactions American Geophysical Union
International Journal of Greenhouse Gas Control, 2016
The objective of the FutureGen 2.0 Project was to demonstrate, at the commercial scale, the techn... more The objective of the FutureGen 2.0 Project was to demonstrate, at the commercial scale, the technical feasibility of implementing carbon capture and storage in a deep saline formation in Illinois, USA. Over approximately 5 years, the FutureGen Industrial Alliance, Inc. (Alliance) conducted a detailed siteselection process and identified a site for carbon sequestration storage in Morgan County, Illinois. A comprehensive geologic and hydrologic characterization of the storage site was conducted and included the collection of seismic data and the drilling and characterization of a stratigraphic borehole. The characterization data provided critical input for developing a site-specific conceptual model and subsequent numerical modeling simulations. The modeling simulations, coupled with upstream designs of the pipeline and power plant, supported the development of a detailed design that included the injection wells and associated control and monitoring infrastructure. The Alliance used all of these data to develop the required documentation to support the applications for four underground injection control (UIC) permits (one for each proposed well). In August 2014, the U.S. Environmental Protection Agency issued four, first-of-their-kind, Class VI UIC permits for carbon sequestration in the United States to the Alliance. This equated to one permit per planned injection well. The information and data generated under this project have been made publicly available through reports and publications, including this journal and others.
Les Techniques De L Industrie Minerale, 2002
The characteristics of intraplate volcanism in the Pacific are very diverse. There is probably mo... more The characteristics of intraplate volcanism in the Pacific are very diverse. There is probably more than 106 seamounts on the Pacific seafloor created by past or present volcanism. Among them, a number are organized in alignments, some of which showing increasing ages along the track in the direction of plate motion. Sorting the latter by their track duration further shows
ABSTRACT The theory of upwelling mantle plumes can explain most of the characteristics of hotspot... more ABSTRACT The theory of upwelling mantle plumes can explain most of the characteristics of hotspots and their associated volcanism. Surface manifestations along the hotspot track such as topography due to volcanic activity are usually accompagnied by a large-wavelength feature: the hotspot swell. This broad topographic high is generally considered as the consequence of the presence of hot material under the oceanic lithosphere. The precise estimation of the amplitude and wavelength of a swell is long and fastidious, and all existing methods are based on the systematic study of topographic profiles transversal to the chain alignment. We have developed a filtering method allowing the direct calculation of the swell on 2D bathymetric grids. Global topography is obtained by correcting bathymetry from thermal subsidence due to the cooling of the oceanic seafloor away from mid-ocean ridges. Our filtering method then allows the separation of the swell and volcanism contributions to this topography. Flexure associated to these two manifestations is computed in Fourier space with a 3D elastic plate model. Temporal variations of the magma volume flux produced by the hotspot are then calculated by the mean of translating windows along the chain alignment. The same procedure is then applied to the isolated swell. Both volume fluxes are correlated through time, and present two behaviours with different time scales: 1) an increasing tendency from 43.1 Ma until now, reflecting an increasing in the hotspot activity through time and 2) oscillations with a shorter time period of about 5 My, which could be the manifestation of solitary waves propagation in the plume conduit. The swell amplitude becomes negligible for ages older than 35 Ma, due to the cumulated effect of conductive heat loss and advection of the plume hot material by mantle convection. Correlation between the volume flux associated to the swell (characteristic of the plume behaviour) and the volume flux associated to volcanism (material produced by the hotspot) shows that the latter can be considered as a relevant parameter of the temporal evolution of the hotspot behaviour. The use of this parameter eliminates the error due to the choice of the subsidence model, and allows to analyse the evolution all along the chain, without age restriction.
Geophysical Research Letters, Sep 1, 1996
The south central Pacific Ocean is well covered with satellite-derived gravity data (ERS-1, GEOSA... more The south central Pacific Ocean is well covered with satellite-derived gravity data (ERS-1, GEOSAT, SEASAT and Topex/Poseidon) but sparsely covered with shipboard depth soundings and gravity measurements. We present an improved method of bathymetric prediction from gravity using both shipboard and satellite data. We employ a compensation model with two layers for the crust to attempt bathymetric prediction using a 2-D spectral approach. Parameters such as flexural wavelength and crustal density are the major constraints for the model. They are determined on a limited area by minimizing the difference between observed bathymetry ship profiles and the model predictions. Then, in regions where there are no ship data, these parameters are used to predict the seafloor topography from ship gravity data combined with satellite grid points. The prediction has an horizontal resolution limit of 8 km and the depth error is usually less than 300 m. This method is better constrained than the ones using satellite altimetry data only. Results on the Western Tuamotu archipelago and on Marquesas Islands, French Polynesia, are presented and discussed.
Journal of Volcanology and Geothermal Research, 1985
Water Resources Management, 2015
One important issue in the storage of large volumes of fluids, mainly water and CO 2 , in the dee... more One important issue in the storage of large volumes of fluids, mainly water and CO 2 , in the deep subsurface is to determine the resulting field-scale-induced displacements and consequences of overpressures on the mechanical integrity of the storage reservoir and surroundings. A quantifiable estimation of displacement can be made by combining the robust, cost-effective, and repeatable geophysical techniques of micro-gravimetry, differential global positioning system (DGPS), and differential synthetic aperture radar interferometry (DInSAR). These techniques were field tested and evaluated for the first time on an active large-volume aquifer storage and recovery (ASR) project in Pendleton, Oregon, USA, where three ASR wells are injecting up to 1.9 million m 3 year −1 into basalt aquifers to a depth of about 150 m. Injection and recovery of water at the wells are accompanied by significant gravity anomalies and vertical deformation of the ground surface localized to the immediate surroundings of the injection wells as evidenced by DGPS and gravity measurements collected in 2011. At a larger scale, and between 2011 and 2013, DInSAR monitoring of the Pendleton area shows subcentimetric deformation in the western part of the city and close to the injection locations associated with ASR cycle. Deformations are found to be temporally out phased with the injection and recovery events due to complex groundwater flow. A numerical simulation of the effect of the water injection gives results in good agreement with the observations and confirms the validity of the approach, which could be deployed in similar geological contexts to look at the mechanical effects of water and gas injections.
Green Chem., 2015
A reversible CO2-triggered volume expansion significantly lowers the fracture initiation pressure... more A reversible CO2-triggered volume expansion significantly lowers the fracture initiation pressure in highly impermeable igneous rock as compared to conventional fracturing fluids.
[Français] Des mesures du flux de chaleur ont été acquises suivant deux profils perpendiculaires ... more [Français] Des mesures du flux de chaleur ont été acquises suivant deux profils perpendiculaires à la ride des Mascareignes, Océan Indien, par le NO Marion-Dufresne, lors de la campagne MASCAFLUX 1992, dans le but de contraindre les modèles de comportement de la lithosphère sous cette structure. Le relief volcanique de cette ride asismique est dû au fonctionnement du point chaud asthénosphérique qui est responsable du volcanisme actuel de l'ile de la Réunion. Après correction des effets de la sédimentation, le flux de chaleur présente des variations à courte (< 100 km) et moyenne longueur d'onde (= 400 km). Les premières sont à associer à des remontées du socle sous la couverture sédimentaire, ainsi qu'à des effets de circulation de fluides le long des pentes des reliefs, alors que les secondes sont manifestement associées à la présence de la ride. L'ensemble des valeurs, en moyenne 8 à 10 mW.m-2 plus élevées que la valeur théorique du flux déduite du refroidissem...
Eos, Transactions American Geophysical Union, 2005
10th International Congress of the Brazilian Geophysical Society & EXPOGEF 2007, Rio de Janeiro, Brazil, 19-23 November 2007, 2007
ABSTRACT New heat flow data have been collected along two profiles perpendicular to the Mascarene... more ABSTRACT New heat flow data have been collected along two profiles perpendicular to the Mascarene ridge, Indian Ocean, by the French RV Marion-Dufresne (Mascaflux 92 cruise). The volcanic relief of the aseismic ridge is due to an asthenospheric mantle plume, now responsible for the active volcanism of Reunion Island. After being corrected for the effects of sedimentation, the heat flow data exhibit short (<100 km) and middle wavelength variations (= 400 km). The former can be associated with the effects of basement relief as well as seafloor topographic effects. The latter are clearly linked to the ridge. The entire high quality data set has a mean value 8 to 10 mW.m(-2) higher than the theoretical value deduced from the cooling of the lithosphere with age. This could be related to the generally elevated basement topography (mean anomalous height similar to 800 m) extending largely beyond the limits of the profiles. This topographic high is also associated to a -40 mgal free air gravity anomaly. A model of mantle plume-lithosphere interaction where both the lithosphere is thinned, and a dynamical uplift exists from below, is suggested to explain all the geophysical observations.