Dr. Bjorklund is a Research Scientist at the University of Houston. His current studies have focused on the geological evolution of the Los Angeles basin and continental borderland and its impact on the petroleum potential of the region and the application of advanced seismic attributes to characterize complex reservoirs. He has supervisory and technical experience with three major oil and gas companies that range from exploitation and close-in exploration in the West Coast, Rocky Mountain, and Mid-continent areas of the US to international operations in the offshore of Trinidad and China and in the Northwest Territories of Pakistan. He has broad-based skills in structural geology, reservoir description, reserve estimation, and risk-weighted prospect analysis. He has experience with IHS Kingdom, 2DMove and Arc-Info. Dr. Bjorklund is a licensed Professional Geoscientist in the State of Texas and a consultant to the petroleum industry. For more information see:http://www.geosc.uh.edu/people/faculty/tom-bjorklund/ Supervisors: Supervisor: Hua-Wei Zhou-Department Chair-Margaret S. Sheriff College Professorship in Geophysics
*Adaptation for online presentation of selected results of the author’s research for Ph.D. disser... more *Adaptation for online presentation of selected results of the author’s research for Ph.D. dissertation. A more comprehensive compilation of the author’s work is presented on CD-ROM in Search and Discovery CDROM Series #1, entitled The Whittier Fault Trend in the Major Oil Producing Area of the Northeastern Los Angeles Basin: Interpretation and Data. This publication is available from Search and Discovery sd@datapages.com and AAPG Bookstore (http://bookstore.aapg.org). University of Houston (tbjorklund@uh.edu)
1. Background The Minerals Management Service (MMS) estimates that discovered and undiscovered co... more 1. Background The Minerals Management Service (MMS) estimates that discovered and undiscovered conventionally recoverable oil and gas resources of the Pacific OCS Region range from 14 to 19 billion BOE. In the California OCS Santa Maria and Santa Barbara-Ventura Basins, 24 offshore fields with reserves of 1.3 billion BOE have been discovered but are undeveloped because of the 1982 Federal moratorium on offshore drilling. The high-side potential, including prospects in state waters, may reach 3.4 billion BOE. Very long horizontal offsets with extended reach drilling (ERD) from onshore locations may now provide an economically and environmentally acceptable alternative to offshore platforms to develop some of these reserves. Horizontal reaches of ERDs are approaching seven miles. Assuming ERD wells can develop reserves within 7 miles of the California coast, the potential exists to develop between 500 and 1000 MMBOE from onshore sites. Potential adverse effects of onshore development ...
Over the past decade, several crustal P- and S-wave tomographic velocity models have been propose... more Over the past decade, several crustal P- and S-wave tomographic velocity models have been proposed for the greater Los Angeles basin, including the SCEC model (Magistrale et al., BSSA, 90, 6B, S65-S76, 2000), the model by Hauksson (JGR, 105, 13,875-13,903, 2000), and the model by Zhou (1994, 2002). The availability of both P and S velocity models provides the possibility
... Click to view high-resolution figures in PDF format (PDF file >15 MB). THE WHITTIER FAULT ... more ... Click to view high-resolution figures in PDF format (PDF file >15 MB). THE WHITTIER FAULT TREND: CROSS SECTIONS, STRUCTURE MAPS, AND WELL TOPS IN THE MAJOR OIL PRODUCING AREA OF THE NORTHEASTERN LOS ANGELES BASIN*. By. Tom Bjorklund 1. ...
We conducted a comparative analysis of the new deformable layer tomography (DLT) with the traditi... more We conducted a comparative analysis of the new deformable layer tomography (DLT) with the traditional fixed-in-space cell tomography along three 2-D crustal profiles of P-wave velocities in southern California using first arrivals from local earthquakes and two Los Angeles Regional Seismic Experiment (LARSE) seismic lines. The DLT method inverts for the depth-varying geometry of velocity interfaces, which include major velocity discontinuities near the top and bottom of the crust and boundaries between velocity layers in the middle crust. In regions characterized by large lateral velocity changes, the DLT method may improve the depth resolution of major velocity interfaces compared to traditional cell tomography using fixed-in-space cells or grids. We also tested the use of crustal thickness estimates from a receiver function study for constraining the depth range of the Moho geometry. Tests indicate that, in areas of sufficient ray coverage, the depth resolution of the DLT for major velocity interfaces is usually less than 1 km in the upper crust and less than 3 km in the lower crust. Our 2-D DLT models fit the first arrival data significantly better than three published 3-D cell tomography models along the profiles. The configurations of basin edges and undulating velocity discontinuities are well delineated in the DLT models and indicative of the crustal architecture of the region.
*Adaptation for online presentation of selected results of the author’s research for Ph.D. disser... more *Adaptation for online presentation of selected results of the author’s research for Ph.D. dissertation. A more comprehensive compilation of the author’s work is presented on CD-ROM in Search and Discovery CDROM Series #1, entitled The Whittier Fault Trend in the Major Oil Producing Area of the Northeastern Los Angeles Basin: Interpretation and Data. This publication is available from Search and Discovery sd@datapages.com and AAPG Bookstore (http://bookstore.aapg.org). University of Houston (tbjorklund@uh.edu)
1. Background The Minerals Management Service (MMS) estimates that discovered and undiscovered co... more 1. Background The Minerals Management Service (MMS) estimates that discovered and undiscovered conventionally recoverable oil and gas resources of the Pacific OCS Region range from 14 to 19 billion BOE. In the California OCS Santa Maria and Santa Barbara-Ventura Basins, 24 offshore fields with reserves of 1.3 billion BOE have been discovered but are undeveloped because of the 1982 Federal moratorium on offshore drilling. The high-side potential, including prospects in state waters, may reach 3.4 billion BOE. Very long horizontal offsets with extended reach drilling (ERD) from onshore locations may now provide an economically and environmentally acceptable alternative to offshore platforms to develop some of these reserves. Horizontal reaches of ERDs are approaching seven miles. Assuming ERD wells can develop reserves within 7 miles of the California coast, the potential exists to develop between 500 and 1000 MMBOE from onshore sites. Potential adverse effects of onshore development ...
Over the past decade, several crustal P- and S-wave tomographic velocity models have been propose... more Over the past decade, several crustal P- and S-wave tomographic velocity models have been proposed for the greater Los Angeles basin, including the SCEC model (Magistrale et al., BSSA, 90, 6B, S65-S76, 2000), the model by Hauksson (JGR, 105, 13,875-13,903, 2000), and the model by Zhou (1994, 2002). The availability of both P and S velocity models provides the possibility
... Click to view high-resolution figures in PDF format (PDF file >15 MB). THE WHITTIER FAULT ... more ... Click to view high-resolution figures in PDF format (PDF file >15 MB). THE WHITTIER FAULT TREND: CROSS SECTIONS, STRUCTURE MAPS, AND WELL TOPS IN THE MAJOR OIL PRODUCING AREA OF THE NORTHEASTERN LOS ANGELES BASIN*. By. Tom Bjorklund 1. ...
We conducted a comparative analysis of the new deformable layer tomography (DLT) with the traditi... more We conducted a comparative analysis of the new deformable layer tomography (DLT) with the traditional fixed-in-space cell tomography along three 2-D crustal profiles of P-wave velocities in southern California using first arrivals from local earthquakes and two Los Angeles Regional Seismic Experiment (LARSE) seismic lines. The DLT method inverts for the depth-varying geometry of velocity interfaces, which include major velocity discontinuities near the top and bottom of the crust and boundaries between velocity layers in the middle crust. In regions characterized by large lateral velocity changes, the DLT method may improve the depth resolution of major velocity interfaces compared to traditional cell tomography using fixed-in-space cells or grids. We also tested the use of crustal thickness estimates from a receiver function study for constraining the depth range of the Moho geometry. Tests indicate that, in areas of sufficient ray coverage, the depth resolution of the DLT for major velocity interfaces is usually less than 1 km in the upper crust and less than 3 km in the lower crust. Our 2-D DLT models fit the first arrival data significantly better than three published 3-D cell tomography models along the profiles. The configurations of basin edges and undulating velocity discontinuities are well delineated in the DLT models and indicative of the crustal architecture of the region.
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