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anhydrite argillaceous bottom hole sample calcareous calcite chert Chlorides l7,000 ppm clear quartz conditioning mud Continued to drill core barrel crystalline to cryptocrystalline dark grey brown dense Deviation Dolomite drill pipe Drilled ahead drums Caustic Dull fill on bottom Fish and mica fish fragments fractured grained grey/brown grey/white H'd ZT Kelly hose l0 sacks Quebroxin l2 hours l6,000 ppm Calcium light grey Limestone Low Vis Driscose medium crystalline medium grey medium to dark mica fragments micaceous minor amounts Monograptus Mud weight l0.5 Mudstone Ostracod Ph 9.5 Added Plug porosity pyrite pyrobitumen quartz r.p.m. Bit weight Ran back Reamed Rig maintenance Rotary speed 60 sacks Caustic sacks High sacks Low sacks Plaster sacks S.W. Gel Sand content Sandstone Shale stringers shaly siliceous Siltstone Silurian slickensiding slightly calcareous stylolites sub angular T.D. l2 midnight Temperature Tripped out Bit waiting on weather weight l0.4 weight l0.5 Viscosity Wind calm