Wireline Cone Penetrometer System for Multiple Tool Usage
Cone Penetrometer Technology is becoming more common for site characterization activities as its advantages (e.g. increased speed, lower cost, reduced drilling waste) over conventional drilling technologies has been demonstrated. Although CPT offers many benefits, it can be improved to offer increased utility and cost savings with the development of an innovative wireline system. The proposed wireline cone penetrometer system consists of an assortment of tools that can be pushed using standard CPT rigs and equipment. The novel aspect of this approach is that various tools can be placed at the tip of the rod string depending on the time of information or sample desired. Tools can be swapped at any depth and different tools can be used for penetration or retraction. Wireline CPT allows nearly all work to be accomplished in a single penetration, as opposed to the multiple penetrations currently conducted if more than one kind of data is required. This approach will reduce both the time required for job completion and the costs. Also, since the number of penetrations is reduced, the risk associated with sealing confining layers will be minimized.
	Developers: •  Applied Research Associates, South Royalton, VT OST Industry Programs
	Applications: •  The proposed wireline cone penetrometer system consists of an assortment of tools that can be pushed using standard CPT rigs and equipment. The novel aspect of this approach is that various tools can be placed at the tip of the rod string depending on the time of information or sample desired. Tools can be swapped at any depth and different tools can be used for penetration or retraction.
	Benefits: •  Wireline CPT allows nearly all work to be accomplished in a single penetration, as opposed to the multiple penetrations currently conducted if more than one kind of data is required. •  This approach will reduce both the time required for job completion and the costs. •  Since the number of penetrations is reduced, the risk associated with sealing confining layers will be minimized.
	Status: •  This project commenced in July, 1998
Milestones:  Completed Incomplete BST FY 99 DM FY 00   IT - ITSR Publication; PR - Peer Review; DP - Deployment; AI - Available for Implementation; DM - Demonstration; BST - Bench-Scale Testing;
9/19/02 Industry and University Programs OST Ref #: 2222