Abstract
No abstract available. doi:10.2204/iodp.sd.14.05.2012
Highlights
An essential aspect of the forty years of deep-sea scientific drilling has been to maximize the scientific return during each expedition while preserving samples for future investigations
The downhole instrument string utilized components from Exp. 336 that were designed for deployment within the 3-inch confines of the Exp. 336 Circulation Obviation Retrofit Kit (CORK)
With the larger diameter available to the CORK-Lite, seven osmotic packages were coupled into one unit (Fig. 5)
Summary
An essential aspect of the forty years of deep-sea scientific drilling has been to maximize the scientific return during each expedition while preserving samples for future investigations. During Integrated Ocean Drilling Program (IODP) Expedition 336 to North Pond on the western flank of the Mid-Atlantic Ridge at 22qN, Hole U1383B (Fig. 1) was planned to be a deep hole, but was abandoned when a 14.75-inch tri-cone bit catastrophically failed at 89.9 meters below the seafloor (mbsf) (Expedition 336 Scientists, 2012) This resulted in about 36 meters of open hole below casing, similar to conditions within tens of legacy boreholes. The downhole instrument string utilized components from Exp. 336 (osmotic pumps, coils of small bore sample tubing, support rods and various connectors) that were designed for deployment within the 3-inch confines of the Exp. 336 CORKs. With the larger diameter available to the CORK-Lite, seven osmotic packages were coupled into one unit (Fig. 5). A frame was designed to hold these packages, protect them during
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