Objective:
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 MDHDS can deploy pore pressure penetrometers including the SET-P and the T2P. The MDHDS’ predecessor, the Colletted Delivery System (CDS) failed to decouple the penetrometer from the ship on over eighty percent the deployments. The new MDHDS 1) removes the problem of tool dislodgement 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.

Assembly Videos

Technical Documents

Principal Investigators:
Institute for Geophysics, The University of Texas at Austin
Texas A&M University
Lamont Doherty Earth Observatory of Columbia University Borehole Research Group
Mohr Engineering Division of Stress Engineering Services, Inc.

Additional Information:
Integrated Ocean Drilling Program–Class B Engineering Development Proposal
Results from T2P & MFTM Communications Test