4.Casing MEH-032016 - CASING CASING CASING CASING CASING...

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CASING
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CASING
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Casing A casing string consists of individual joints of steel pipe which are connected together by threaded connections. same outer diameter and are approximately 40 ft long.
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Casing A guide shoe or casing shoe, is attached to the bottom of the casing A casing hanger, which allows the casing to be suspended from the wellhead, is attached to the top of the casing.
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Function of Casing Support unstable formations Isolate weak formations from high mud weights. Case off upnormally pressurized zones. Seal lost circulation zones. Complete and produce efficiently. Provide structural support for BOP & WH.
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Casing
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Conductor Casing (16’ or 20” O.D.) The conductor is the first casing string to be run, and consequently has the largest diameter. It is generally set at approximately 100ft below the ground level. Its function is to seal off unconsolidated formations at shallow depths.
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Surface Casing (13 3/8” O.D.)
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