While drilling in bouldery / soft formations, the wall of the hole will slough or cave, resulting in stuck bit and difficult string retraction. The casing is then put into the hole to wall it off. Flush Coupled Casing is thin wall tubing with box connections at both ends. Short couplings with pin threads connect the casing. Any size casing will fit into next larger size & its ability to pass the corresponding size core bit & reaming shell.UEW manufactures the following "X" SERIES CASINGS: AX, BX, NX, HX, PX, SX, ZX
Flush Coupled Casing is thin wall tubing with box connections at both ends. |
Technique:Seamless Technique:Cold Drawn Flush Jointed casing has a heavier wall section than flush coupled casing and an integral pin and box connection. ...
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