The Probe Delivery Tool (PDT), a direct improvement over the Motion-Decoupled Hydraulic Delivery System (MDHDS), was designed for use with the USIO’s SODV and can potentially be used for applications on other IODP vessels. The PDT deploys pore pressure penetrometers including the SET-P and the T2P. The PDT’s predecessor, the Colletted Delivery System (CDS) failed to decouple the penetrometer from the ship on over eighty percent of deployments. The new PDT 1) removes the problem of tool dislodgment associated with the bottom hole assembly of the current CDS, 2) improves control over the penetration process by using drilling fluid to hydraulically insert the penetrometer, 3) more effectively decouples the penetrometer from drill string heave, and 4) will allow deployment of other downhole tools that may be developed by third parties.
Principal Investigators:
University of Texas Institute for Geophysics (UTIG)
Pettigrew Engineering