SYMPOSIA PAPER Published: 01 January 1988
STP10339S

Design and Offshore Experience with an In-Situ Vane

Source

The design, development, and use offshore of a commercial in-situ vane, operated from a carrier tool downhole or from a seabed jacking system, is described. This vane is inserted into soil at a rate of 20 mm/s for both deployment modes. The vane is rotated at a constant speed of either 0.1 or 0.2°/s in cohesive soils having a maximum shear strength of 200 kPa. Using the hard-tie drill string heave compensating system, the first downhole vane test may be within about 0.75 m of the borehole base in very soft soils; if the hard-tie is not used, then the first test should be about 1.5 m below the borehole base to avoid soil disturbed by drilling. Standards developed for onshore vane testing can be used for offshore vane testing with few modifications.

Author Information

Geise, JM
Fugro Geotechnical Engineers B.V., AB Leidschendam, The Netherlands
Hoope, Jt
Fugro Geotechnical Engineers B.V., AB Leidschendam, The Netherlands
May, RE
Fugro Ltd., Hemel Hempstead, United Kingdom
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: D18
Pages: 318–336
DOI: 10.1520/STP10339S
ISBN-EB: 978-0-8031-5030-0
ISBN-13: 978-0-8031-1188-2