Figure F3. Photographs of Expedition 327 subseafloor borehole observatory (“CORK”) wellheads. A. Three CORK wellheads secured to the top of the core technician shop, aft of the rig floor, near the start of Expedition 327. The tops of the CORK wellheads are shown at the bottom of the photograph, and the first short sections of 4½ inch CORK casing are visible at the top of the photograph, extending beyond the roof of the core tech shop. The center and rightmost CORKs were deployed in Holes U1362A and U1362B, respectively, whereas the leftmost CORK was prepared for Hole 1027C but could not be deployed during Expedition 327. The hole at the top of each CORK wellhead (bottom of the photograph) receives an instrument string and plug. Instrument and sampling bays are visible near the center of the wellheads, with valves and fittings covered by white plastic bags to protect them from grit and grease prior to installation. These bags were removed immediately before each CORK was deployed through the moonpool. Ball valves to be used for the free-flow experiment are visible near the bottom of the visible bays on the Hole U1362A and U1362B CORKs (black with yellow handles). B. Hole U1362A CORK being hoisted onto the rig floor using the draw works and CORK running tool. Instruments visible on the right side of the wellhead are a pressure logger and gauges.
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