The Fourth James K. Mitchell Lecture: The CPT in offshore soil investigations - a historic perspective

For the last 40 years, the CPT has played a key role in offshore soil investigations, mainly in connection with oil and gas development, but also for other purposes. The offshore application of CPT has been an important factor with regards to development of equipment, data processing and interpretation. Each of the following aspects are discussed in terms of historic development, present status and future challenges: - Deployment method and equipment. - Penetrometer design and construction. - Data acquisition, processing and quality control. - Standards and guidelines. - Interpretation of results and application in foundation design. It is shown that these developments have greatly enhanced the reliability and applicability of the use of the CPT in soil investigations and design. However, there are still important challenges to be faced in the future

[1]  Paul W. Mayne,et al.  ENHANCED GEOTECHNICAL SITE CHARACTERIZATION BY SEISMIC PIEZOCONE PENETRATION TESTS , 2000 .

[2]  P. Robertson,et al.  A Seismic Cone Penetrometer for Offshore Applications , 1986 .

[3]  Ken Been,et al.  Soil Liquefaction: A Critical State Approach , 2006 .

[4]  V. Bienvenu,et al.  An Innovative Deepwater Geotechnical Tool , 2001 .

[5]  Nabil Sultan,et al.  First Tests of Penfeld: a New Seabed Penetrometer , 2004 .

[6]  Per Magne Aas,et al.  Design predictions and measurements during installation of suction anchors with and without water-flow system to help installation through layered soil profiles , 2009 .

[7]  Ruiter J De.  ELECTRIC PENETROMETER FOR SITE INVESTIGATION , 1971 .

[9]  H. Bolton Seed,et al.  Use of SPT and CPT Tests for Evaluating the Liquefaction Resistance of Sands , 1986 .

[10]  Mark Randolph,et al.  Seabed geotechnical characterisation with the portable remotely operated drill , 2005 .

[11]  James K. Mitchell,et al.  CONE RESISTANCE AS MEASURE OF SAND STRENGTH , 1978 .

[12]  F. L. Beringen,et al.  Pile foundations for large North Sea structures , 1979 .

[13]  James A. Schneider,et al.  Database assessment of CPT-based design methods for axial capacity of driven piles in siliceous sands , 2008 .

[14]  T. Tjelta,et al.  In-Situ Density Measurements by Nuclear Backscatter for an Offshore Soil Investigation , 1985 .

[15]  J. Billam.  Correlations between cone resistance and vane shear strength in some Scandinavian soft to medium stiff clays: Discussion , 1977 .

[16]  P. Robertson.  Soil classification using the cone penetration test , 1990 .

[17]  P. Le Tirant.  Seabed Reconnaissance And Offshore Soil Mechanics for the Installation of Petroleum Structures , 1979 .

[18]  P. Robertson.  Interpretation of cone penetration tests — a unified approach , 2009 .

[19]  H. M. Zuidberg,et al.  Seacalf: A submersible cone‐penetrometer rig , 1975 .

[20]  N. Withers,et al.  The Development of a Full Displacement Pressuremeter , 1985 .

[21]  T Lunne,et al.  Laboratory and field evaluation of cone penetrometers , 1988 .

[22]  O Eide,et al.  CORRELATIONS BETWEEN CONE RESISTANCE AND VANE SHEAR STRENGTH , 1977 .

[23]  Timothy D. Stark,et al.  Liquefaction Resistance Using CPT and Field Case Histories , 1995 .

[24]  P Hefer,et al.  Practice notes on push-in penetrometers for offshore geotechnical investigation , 2005 .

[25]  J. Peuchen.  Deepwater Cone Penetration Tests , 2000 .

[26]  P. K. Robertson,et al.  Current status of the piezocone test : Proc 1st International Symposium on Penetration Testing, ISOPT-1, Orlando, 20–24 March 1988 V1, P93–116. Rotterdam: A A Balkema, 1988 , 1990 .

[27]  John E. Garlanger,et al.  The Piezometer Probe , 1975 .

[28]  M. Randolph,et al.  Estimation of intact and remoulded undrained shear strengths from penetration tests in soft clays , 2010 .

[29]  M. Jefferies,et al.  Experience with measurement of horizontal geostatic stress in sand during cone penetration test profiling , 1987 .

[30]  Hans Petter Jostad,et al.  Penetration Resistance of Offshore Skirted Foundations and Anchors in Dense Sand , 2008 .

[31]  Peter Robertson,et al.  CPT for soft sediments and deepwater investigations , 2011 .

[32]  Ken Been,et al.  A STATE PARAMETER FOR SANDS , 1985 .

[33]  Guy Sanglerat,et al.  The penetrometer and soil exploration , 1972 .

[35]  Peter K. Robertson,et al.  Cone-penetration testing in geotechnical practice , 1997 .

[36]  R. A. Tokar,et al.  Problems of soil mechanics and construction on soft clays and structurally unstable soils , 1973 .

[37]  T Lunne,et al.  BOUNDARY EFFECTS IN THE LABORATORY CALIBRATION OF A CONE PENETROMETER FOR SAND , 1982 .

[38]  P. W. Mayne,et al.  The Second James K. Mitchell Lecture Undisturbed sand strength from seismic cone tests , 2006 .

[39]  M. Randolph,et al.  Improved Seabed Strenght Profiling Using T-Bar Penetrometer , 1998 .

[40]  Christer Sjöström,et al.  State-of-the-art report , 1997 .

[41]  P. Robertson.  Estimating in-situ state parameter and friction angle in sandy soils from CPT , 2009 .

[42]  Nabil Sultan,et al.  Detection of free gas and gas hydrate based on 3D seismic data and cone penetration testing: An example from the Nigerian Continental Slope , 2007 .

[43]  T. I. Tjelta,et al.  Advanced Cone Penetrometer Development for In-Situ Testing at Gullfaks C , 1987 .

[44]  Mark Randolph,et al.  In situ testing for design of pipeline and anchoring systems , 2007 .