1）Maintain borehole stability
2) Prevent contamination of water sands
3) Isolate water from producing formations
4) Control well pressures during drilling, production, and workover operations
Casing provides locations for the installation of:
1) Blowout preventers
2) Wellhead equipment
3) Production packers
4) Production tubing
Casing pipe is the major structural component of a well. TheAPI 5CT Casing pipe is a large-diameter steel pipe that serves as the structural retainer for the walls of oil and gas wells, and typically held into place with cement.
a) Before order to be confirmed, the raw material of pipe body and tool joint should be booked from famous big steel enterprises in China
b) Raw material’s size, quantity, length, mechanical property are checked by our QC staff and factory own laboratory
c) Every drill pipe has nondestructive inspection, cleaned and thread oil before packing.
d) Before delivery clients could send one QC or point the third party to check the quality such SGS, BV or others.