Sunday, April 21, 2013

2918 feet, casing the hole

Today we processed rock core to a depth of 2908 ft, and there should be one more run of rock arriving soon that will take us to 2918 ft.  Yesterday evening, it was decided that it was time to start casing the first half of this hole.  The drill crew spent all day today carefully lowering PQ casing (3.378" inner diameter) into the hole to protect and stabilize the sidewalls for when we drill even deeper.

After the casing is in place, the drillers will take a break while we continue to log the core boxes and Don Thomas samples the groundwater in the hole.  It's hard to say exactly how long this break will last, but it will be at least a couple weeks.  I'll continue to update the blog almost every day as we try to catch up on our backlog of rocks to describe.

When the drill crew returns, the plan is to cement the casing in place and continue coring with an HQ bit (2.625" inner diameter) to our goal depth of ~6000 ft.

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