2 weeks 23 hours
Blog Posts Tagged "reentry system"
Submitted by Elizabeth Chris... on Tue, 08/12/2014 - 20:56
Since we have already drilled a hole at Site U1440 (approximately 20 meters from where we are now) and collected sediment cores from that hole up until we hit hard rock, we started our second hole in a whole new way. Because this hole will be used to obtain cores from deeper depths we need to 'case' the hole to keep it stable. We also need to be able to re enter it several times.