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Project Acronym: SAFOD | State: Completed | Expedition ID: 5025

ins.: 2022-10-06 12:17; ( Age: 2 yrs )
By: sql
Category: SAFOD
SAFOD

SAFOD: 2007-07-07

Drilling is progressing rapidly following several days of slow
Jose, driller of the night crew, is tripping a diamond-impregnated tricone bit into the hole for directional drilling.

Drilling is progressing rapidly following several days of slow timed drilling through arkosic sandstone formation. Following a change over to a tricone bit early this morning, drilling passed from the arkosic sandstone into an interbedded siltstone/sandstone sequence. This transition corresponds to the western boundary of the low velocity zone identified from the 2005 drilling logs.