The 4 ¾” X-Series AST has a stroke capacity of 10” or 0.25m and can be configured for all regular drilling operations including work with motors and under-reamers. For extended laterals, the tool can also be configured to better capture and preserve the weight coming through and produce a more constant push on the bit. For vertical drilling, the 4 ¾” X-Series AST not only prevents harmful stick-slip and drilling vibrations, but it also provides a safer way of operating sensitive, tapered drill-strings.
The inner diameter is 1 ½”, which presents no restrictions to relevant drop-balls. The pressure loss through the tool is 150 psi at 350 GPM or 10 bar at 1300 lpm. The tool can also be configured for high temperatures.
|Length||5.49 m||18.01 ft|
|Max. OD||121 mm||4.75”|
|Min. ID||35 mm||1.38”|
|Connection top||NC 38 box||NC 38 box|
|Connection bottom||NC 38 pin||NC 38 pin|