CHARACTERISTICS
* SHALLOW- USUALLY LESS THAN 100 FEET DEEP
* LARGE PIPE - 20 OD UP 36 OR LARGER
* MUST BE CHAIND DOWN WHILE CEMENTING
PURPOSES
* PREVENTS WASHING OUT UNDER RIG
* IS ELEVATION FOR BELL NIPPLE AND FLOW NIPPLE
ESTABLISH RETURNS TO SURFACE
DIRECT RETURNS TO MUD PITS
CEMENTS USED
ACCELERATED (A , G ، H ) OR CONSTRUCTION CEMENT
READY MIX CONCRETE SOMETIMS USED
CEMENTING PROCEDURES
IF NO WIPER PLUGS USED , JUST DISPLACE CASING
OFTEN CEMENTED THROUGH DRILL PIPE (INNER STRING) THANKS ALL
