Transcription of SPECIFICATIONS FOR DRILLING AND CASING …
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SPECIFICATIONS FOR DRILLING AND CASING …
9/27/00 jgdSPECIFICATIONS FOR DRILLING AND CASING BOREHOLES FOR P-S SUSPENSION LOGGING1. DRILLING must be done with minimal sidewall disturbance. We strongly recommend the rotary mudor rotary wash method. This method does little damage to the borehole wall, and the DRILLING fluidcoats and seals the borehole wall reducing fluid loss and wall collapse. DRILLING borehole diametershould not exceed the outer diameter of the CASING by more than If the borehole must be cased, the CASING must be PVC and properly installed and grouted. Anyvoids in the grout will cause problems with the data.
9/27/00 jgd SPECIFICATIONS FOR DRILLING AND CASING BOREHOLES FOR P-S SUSPENSION LOGGING 1. Drilling must be done with minimal sidewall disturbance.
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