Proc. IODP, 308, Data report: penetrometer measurements of in situ temperature and pressure, IODP Expedition 308

IODP Proceedings Volume contents Search

Expedition reports Research results Supplementary material Drilling maps Expedition bibliography
Chapter contents Abstract Introduction Method Results Summary of deployments Data extrapolation In situ temperature In situ pressure Acknowledgments References Figures F1. Bathymetry. F2. Seismic cross section. F3. Seismic and interpreted cross section. F4. DVTPP and T2P. F5. Probe procedure. F6. Deployment summaries. F7. Characteristic deployments. F8. Temperature data, Sites U1319 and U1320. F9. Temperature data, Sites U1322 and U1324. F10. Pore pressure, Site U1319. F11. Pore pressure, Site U1320. F12. Pore pressure, Site U1322. F13. Pore pressure, Site U1324. F14. Pressure estimates. Tables T1. Deployment summary. T2. Temperature and pressure results. T3. Nomenclature. Appendix A Davis-Villinger Temperature-Pressure Probe Appendix B Temperature/dual pressure probe Appendix C Fluid pressure within the drilling pipe Appendix figures AF1. Pressure calibration. AF2. Influence of temperature. AF3. Postcruise pressure calibration. AF4. Calibration coefficients. AF5. Calibration coefficients. AF6. Calibration coefficients. AF7. Tool stop pressure offsets. AF8. Bottom of hole pressure offsets. AF9. Fluid condition scenarios. AF10. Toolstop condition scenarios Appendix tables AT1. DVTPP temperature calibration. AT2. DVTPP pressure calibration. AT3. DVTPP Deployment 20 event summary. AT4. DVTPP Deployment 1 event summary. AT5. DVTPP Deployment 2 event summary. AT6. DVTPP Deployment 3 event summary. AT7. DVTPP Deployment 4 event summary. AT8. DVTPP Deployment 6 event summary. AT9. DVTPP Deployment 7 event summary. AT10. DVTPP Deployment 8 event summary. AT11. DVTPP Deployment 10 event summary. AT12. DVTPP Deployment 11 event summary. AT13. DVTPP Deployment 12 event summary. AT14. DVTPP Deployment 13 event summary. AT15. DVTPP Deployment 14 event summary. AT16. DVTPP Deployment 15 event summary. AT17. DVTPP Deployment 16 event summary. AT18. DVTPP Deployment 17 event summary. AT19. DVTPP Deployment 18 event summary. AT20. DVTPP Deployment 19 event summary. AT21. T2P temperature calibration. AT22. T2P pressure calibration. AT23. T2P Deployment 1 event summary. AT24. T2P Deployment 2 event summary. AT25. T2P Deployment 3 event summary. AT26. T2P Deployment 4 event summary. AT27. T2P Deployment 5 event summary. AT28. T2P Deployment 6 event summary. AT29. T2P Deployment 7 event summary. AT30. T2P Deployment 8 event summary. AT31. T2P Deployment 9 event summary. AT32. T2P Deployment 11 event summary. AT33. T2P Deployment 12 event summary. AT34. T2P Deployment 13 event summary. AT35. T2P Deployment 14 event summary. AT36. T2P Deployment 15 event summary. AT37. T2P Deployment 16 event summary. AT38. T2P Deployment 17 event summary. AT39. T2P Deployment 19 event summary. AT40. T2P Deployment 20 event summary. AT41. T2P Deployment 23 event summary. AT42. T2P Deployment 24 event summary. AT43. T2P Deployment 25 event summary. AT44. T2P Deployment 26 event summary. AT45. T2P Deployment 27 event summary. AT46. T2P Deployment 28 event summary. PDF file			Previous \| Next doi:10.2204/iodp.proc.308.203.2008 Data report: penetrometer measurements of in situ temperature and pressure, IODP Expedition 308¹ H. Long,² P.B. Flemings,³ B. Dugan,⁴ J.T. Germaine,⁵ and D. Ferrell⁶ Abstract We conducted temperature and pore pressure measurements using the Davis-Villinger Temperature-Pressure Probe and the temperature/dual pressure probe penetrometers during Integrated Ocean Drilling Program Expedition 308. In Ursa Basin, 18 measurements were used to determine that the geothermal gradient at Site U1324 is bilinear. The temperature gradient is 18.6°C/km in lithostratigraphic Unit I and 16.7°C/km in Unit II. Based on nine measurements at Site U1322, the geothermal gradient is 21.9°C/km. In Brazos-Trinity Basin IV, the geothermal gradient at Site U1320 is 23.1°C/km. In Ursa Basin, significant overpressures (overpressure ratio = ~0.7) are observed in the sediments above ~200 meters below seafloor (mbsf) at Sites U1322 and U1324. At Site U1324, pore pressure decreases with increasing depth between 200 and 300 mbsf. Below 300 mbsf and within lithostratigraphic Unit II, overpressure is approximately constant (~1 MPa). Unit II is composed of silty claystone interbedded with beds of silt and very fine sand. In Brazos-Trinity Basin IV, only two penetrometer deployments were made and the data are inconclusive. ¹Long, H., Flemings, P.B., Dugan, B., Germaine, J.T., and Ferrell, D., 2008. Data report: penetrometer measurements of in situ temperature and pressure, IODP Expedition 308. In Flemings, P.B., Behrmann, J.H., John, C.M., and the Expedition 308 Scientists, Proc. IODP, 308: College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.308.203.2008 ²ExxonMobil Upstream Research Company, 3120 Buffalo Speedway, Houston TX 77098, USA. hui.long@exxonmobil.com ³John A. and Katherine G. Jackson School of Geosciences, The University of Texas at Austin, 1 University Station C1100, Austin TX 78712-0254, USA. ⁴Department of Earth Science, Rice University, Houston TX 77005, USA. ⁵Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge MA 02139, USA. ⁶Integrated Ocean Drilling Program, Texas A&M University, College Station TX 77845, USA. Initial receipt: 15 June 2007 Acceptance: 16 April 2008 Web publication: 29 October 2008 MS 308-203 Top of page \| Previous \| Next