Pore Pressure Prediction TLE Nov 2012 Swarbrick - Ikon Science

Case Studydensity crossplots facilitates examination of two key rockattributes used in pore-pressure prediction and assists inrecognizing mechanisms of overpressure generation and therequirements to adopt more sophisticated prediction methodologies.Figure 6 illustrates a workflow which captures theprocess described above, including a geologic model to estimateoverpressure from compaction disequilibrium compactionas well as any lateral drainage and lateral transfer effects.This geologic model helps to build confidence of prediction inlow temperature environments, but is especially important athigh temperatures.ReferencesBarker, C., 1972, Aquathermal pressure—role of temperature in developmentof abnormal pressure zones: AAPG Bulletin, 56, 2068–2071.Barker, C., 1990, Calculated volume and pressure changes during thethermal cracking of oil to gas in reservoirs: AAPG Bulletin, 74,1254–1261.Bowers, G. L., 1994, Pore pressure estimation from velocity data: Accountingfor overpressure mechanisms besides undercompaction:International Association of Drilling Contractors/Society of PetroleumEngineers Drilling Conference Dallas, SPE, Paper 27488,515–530.Bowers, G. L., 1995, Pore pressure estimation from velocity data: Accountingfor overpressure mechanisms besides undercompaction:SPE Drilling and Completion, 10, no. 2, 89–95, http://dx.doi.org/10.2118/27488-PA.Eaton, B. A., 1976, Graphical method predicts geopressures worldwide:World Oil, July 1976, 100–104.Eaton, B. A., 1975, The equation for geopressure prediction from welllogs: SPE paper 5544.Gardner, G. H. F., L. W. Gardner, and A. R. Gregory , 1974, Formationvelocity and density: the diagnostic for stratigraphic traps:Geophysics, 39, 770–780, http://dx.doi.org/ 10.1190/1.1440465.Harrold, T., R. E. Swarbrick, and N. R. Goulty, 1999, Pore pressureestimation from mudrock properties in Tertiary basins, S. E. Asia:AAPG Bulletin, 83, no. 7, 1057–1067.Hoesni, M. J., 2004, The Origins of overpressure in the Malay Basinand its influence on petroleum systems: PhD thesis, University ofDurham.Hottman, C. E. and R. K. Johnson, 1965, Estimation of formationpressures from log-derived shale properties: Journal of PetroleumTechnology, June, 717–722, doi: http://dx.doi.org/ 10.2118/1110-PA.Lahann, R., D. McCarty, and J. Hsieh, 2001, Influence of Clay Diagenesison Shale velocities and Fluid Pressure: OTC 13046, OffshoreTechnology Conference.Lahann, R. W. and R. E. Swarbrick, 2011, Overpressure generationby load transfer following shale framework weakening due tosmectite diagenesis: Geofluids, 11, no. 4, 362–375, http://dx.doi.org/10.1111/j.1468-8123.2011.00350.x.Luo, X. and G. Vasseur, 1992, Contributions of compaction and aquathermalpressure to geopressure and the influence of environmentalconditions: AAPG Bulletin, 76, 1550–1559.Mann, D. M. and A. S. Mackenzie, 1990, Prediction of pore fluidpressures in sedimentary basins: Marine and Petroleum Geology,7, no. 1, 55–65, http://dx.doi.org/10.1016/0264-8172(90)90056-M.Meissner, F. F., 1976. Petroleum geology of the Bakken FormationWilliston Basin, North Dakota and Montana, (24th Annual Conference,Williston Basin Symposium) Montana Geological Society,207–227.Swarbrick, R. E., M. J. Osborne, and G. S. Yardley, 2002, Comparisonof Overpressure Magnitude resulting from the Main GeneratingMechanisms, in A. R. Huffman and G. L. Bowers eds., Pressureregimes in sedimentary basins and their prediction: AAPGMemoir, 76, 1–12.Swarbrick, R. E., S. A. O’Connor, and R. W. Lahann, 2011, Occurenceand prediction of high-pressure sediment along the WestAfrican margin: The Leading Edge, no. 6, 682–687, http://dx.doi.org/ 10.1190/​1.3599155.Tingay, R. P., R. R. Hillis, C. K. Morley, R. C. King, R. E.Swarbrick, and A. R. Damit, 2009, Present-day stress and neotectonicsof Brunei: Implications for petroleum exploration andproduction: AAPG Bulletin, 93, no. 1, 75–100, http://dx.doi.org/10.1306/08080808031.Ungerer, P., E. Behar, and D. Discamps, 1983, Tentative calculationof the overall volume expansion of organic matter during hydrocarbongenesis from geochemistry data, Implications for primarymigration, Advances in Organic Geochemistry, 129–135.Acknowledgments: Rick Lahann and Steve O’Connor are thankedfor comments on an early version. Alex Edwards is thanked forassistance in creating the database illustrated in Figure 4. NeilBraunsdorf and Martin Albertin are thanked for valuable editorialassistance.Corresponding author: RSwarbrick@ikonscience.comHardrock Seismic ExplorationEdited by David W. Eaton, Bernd Milkereit, and Matthew H. SalisburySeismic methods have excellent depth penetration and resolving power for deep exploration in hardrock terranes.Through integrated case histories and introductory chapters on the basic principles of seismic acquisition, processing,modeling, and interpretation techniques, this book strikes a fine balance among tutorial, review, application,and future research directions, emphasizing the growing importance of seismic exploration methods in the hardrockenvironment (“old” techniques applied to “new” targets). Researchers interested in high-resolution applications ofcrustal seismology, geophysicists involved with mineral exploration and development, geotechnical engineers, andseismic processors will find this book an invaluable aid in the challenges of seismic exploration of hardrock terranes.ISBN 978-1-56080-114-6 Catalog #131APublished 2003, 270 pages, Hardcover SEG Members $23, List $29, E-book $29To Order: www.seg.org/bookmart or E-mail books@seg.org1294 The Leading Edge November 2012