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"Mike Infurna <br /> [EH]" <br /> <MInfurna@s jcehd. To <br /> com> "John A Izbicki" <br /> <jaizbick@usgs.gov> <br /> 03/28/2006 08:22 cc <br /> AM "Adrienne Ellsaesser [EH]" <br /> <AEI Isaesser@s jcehd.com> <br /> Subject <br /> RE: test test <br /> Thanks John... <br /> good job with thinking conductor casing (cc)...I like the idea. <br /> You'll need to get me the specs on the cc please. The OD and ID in <br /> inches, thickness-gauge, material, one piece? welding? coupling? <br /> threaded, etc...Also, if you could, get me a 'bird's eye'/overhead diagram <br /> view of the well head and how it will appear when the well is completed <br /> showing spacing, cc, borehole. Scaled if possible. Schedule 80 is 0.250" <br /> thick, isn't it? That adds half an inch to OD. Three should fit inside <br /> 11-7/8", but the wall thickness of the cc ( gauge?) is probably quarter <br /> inch steel? that's 12-3/8" OD, right? Add four inches (2 each side) for <br /> grout annulus to the bore hole wall and my math says you'll need NLT a <br /> 16-3/8" borehole just to set the cc. am I missing something here? <br /> Remember, (1)- the cc needs to be centralized also (bottom typically only <br /> one needed as we can support the upper end and (2)- based on Cement grout <br /> type, no drilling inside cc until setup times met ( ASTM Type I and II = <br /> 24 hours, Type III = 12 hours, and Type V = 6 hours. Type IV is even <br /> longer....). Your proposal should include the information on the cement, <br /> mix ratios, methods, etc, OK? <br /> 2 <br />