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Digital Tabulation of Stratigraphic Data from Oil and Gas Wells in Cuyama Valley and Surrounding Areas, Central California

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Digital Tabulation of Stratigraphic Data from Oil And Gas Wells in Cuyama Valley and Surrounding Areas, Central California Open-File Report 2013–1084 U.S. Department of the Interior U.S. Geological Survey Cover: Looking northeast from Cuyama Valley to Caliente Mountain. Producing oil wells in part of the Russell Ranch field in foreground. QTm, Morales Formation; Tsm, Santa Margarita Formation; Tmwr, Whiterock Bluff Shale Member of the Monterey Formation; Tmsa, Saltos Shale Member of the Monterey Formation; Tvpr, Painted Rock Sandstone Member of the Vaqueros Formation. Dotted fault indicates concealed by topography. Photograph taken by Donald S. Sweetkind, U.S. Geological Survey, August 5, 2009. Digital Tabulation of Stratigraphic Data from Oil And Gas Wells in Cuyama Valley and Surrounding Areas, Central California By Donald S. Sweetkind, Shiera C. Bova, Victoria E. Langenheim, Lauren E. Shumaker, and Daniel S. Scheirer Open-File Report 2013–1084 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior SALLY JEWELL, Secretary U.S. Geological Survey Suzette M. Kimball, Acting Director U.S. Geological Survey, Reston, Virginia: 2013 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit http://www.usgs.gov or call 1–888–ASK–USGS For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Suggested citation: Sweetkind, D.S., Bova, S.C., Langenheim, V.E., Shumaker, L.E., and Scheirer, D.S., 2013, Digital tabulation of stratigraphic data from oil and gas wells in Cuyama Valley and surrounding areas, central California: U.S. Geological Survey Open-File Report 2013–1084, 44 p., http://pubs.usgs.gov/of/2013/1084/. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Contents Abstract ...................................................................................................................................................................... 1 Introduction ................................................................................................................................................................. 1 Geologic Setting ......................................................................................................................................................... 5 Stratigraphy ............................................................................................................................................................. 5 Structure ................................................................................................................................................................. 9 Data Compilation Methodology ................................................................................................................................. 10 Well Location ........................................................................................................................................................ 10 Sources of Well Data ............................................................................................................................................ 10 Prospect Well Reports ....................................................................................................................................... 12 Well Summary Reports ...................................................................................................................................... 12 Student Theses ................................................................................................................................................. 12 Electrical, Sonic, and Density Logs ................................................................................................................... 14 Stratigraphic Assignments .................................................................................................................................... 26 Explanation of Column Headings and Abbreviations in Data Table Appendix .......................................................... 26 Summary .................................................................................................................................................................. 38 Acknowledgments ..................................................................................................................................................... 38 References Cited ...................................................................................................................................................... 39 Appendix 1. Stratigraphic Data from Oil and Gas Wells in Cuyama Valley and Surrounding Areas ......................... 43 v Figures 1. Generalized geologic map of the Cuyama Basin and surrounding region ............................................................ 3 2. Geologic map of Cuyama Valley and surrounding ranges ................................................................................... 4 3. Generalized stratigraphy of the Cuyama Basin .................................................................................................... 6 4. Diagrammatic northwest–southeast stratigraphic section across the Cuyama Basin ........................................... 8 5. Map showing location of oil and gas wells in Cuyama Valley and surrounding areas, symbolized by source of subsurface stratigraphic data ................................................................................................................... 11 6. Map showing location of student thesis areas and subsurface cross sections in Cuyama Valley ...................... 13 7. Map showing location of wells with example electric logs and wells with sonic and density logs in Cuyama Valley and surrounding areas ...................................................................................................................... 15 8. Representative electric logs from Cuyama Valley .............................................................................................. 16 9. Sonic and density logs from wells in Cuyama Valley and surrounding areas ..................................................... 20 10. Map showing the location of wells in Cuyama Valley where the stratigraphic section is not duplicated by thrusting, and the location of wells in surrounding range blocks where the section is repeated by one or two thrust faults ....................................................................................................................................... 30 11. Map showing the location of wells in Cuyama Valley that penetrate granite or granitic gneiss at depth ............ 37 vi Conversion Factors Multiply By To obtain Length centimeter (cm) 0.3937 inch (in.) meter (m) 3.281 foot (ft) kilometer (km) 0.6214 mile (mi) meter (m) 1.094 yard (yd) Volume cubic meter (m3) 6.290 barrel (petroleum, 1 barrel = 42 gallons) Density gram per cubic centimeter (g/cm3) 62.428 pound per cubic foot (lb/ft3) Interval velocity feet per second (ft/sec) 0.3048 meters per second (m/sec) Vertical coordinate information is referenced to the North American Vertical Datum of 1988 (NAVD 88). Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83). Elevation, as used in this report, refers to distance above the vertical datum. vii Digital Tabulation of Stratigraphic Data from Oil And Gas Wells in Cuyama Valley and Surrounding Areas, Central California By Donald S. Sweetkind, Shiera C. Bova, Victoria E. Langenheim, Lauren E. Shumaker, and Daniel S. Scheirer Abstract Stratigraphic information from 391 oil and gas exploration wells from Cuyama Valley, California, and surrounding areas are herein compiled in digital form from reports that were released originally in paper form. The Cuyama Basin is located within the southeasternmost part of the Coast Ranges and north of the western Transverse Ranges, west of the San Andreas fault. Knowledge of the location and elevation of stratigraphic tops of formations throughout the basin is a first step toward understanding depositional trends and the structural evolution of the basin through time, and helps in understanding the slip history and partitioning of slip on San Andreas and related faults. Introduction Cuyama Valley is a rural agricultural area located about 55 kilometers (km) north of Santa Barbara and approximately 65 km southwest of Bakersfield, California, in the southeasternmost part of the Coast Ranges of California (fig. 1). Cuyama Valley lies within the eastern part of the Coast Ranges, to the west of the San Joaquin Valley, and north of the west-trending Transverse Ranges (fig. 1). Cuyama Valley sits at the intersection of four counties: the main portions of the valley are within Santa Barbara and San Luis Obispo Counties, regions near the headwaters of the Cuyama River lie in Ventura County, and a small eastern part of the valley lies within Kern County (fig. 1). The main economic activities in Cuyama Valley are ranching, agriculture, and oil and gas production. The Cuyama
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