JA Daily Science Report for Expedition 312, 19 November 2005


LOCATION: Site 1256


SCIENCE UPDATE: Continuing to wash and ream the tight hole. After encountering high torque at 1085 mbsf a mud sweep was pumped. The pipe became stuck at 1198 mbsf for ~45 minutes but was freed at 0600 hr. Washing and reaming continues with intermittent mud sweeps followed by displacement with seawater. The hole was washed and reamed to total depth (1255 mbsf) at 2000 hr, followed by circulation of a 50 barrel mud sweep and displacement by 2X bottom up volume of seawater.