Oilfield Tubular Products API 5CT Casing K55 L80 N80Q Petroleum Pipeline

API 5CT Oil Country Tubular Goods(OCTG) Casing Pipe
1) Standard: API Spec 5CT
2) API and ISO certified
3) Specification: 4-1/2'', 5", 5-1/2", 6-5/8", 7", 7-5/8", 8-5/8", 9-5/8", 13-3/8", 20"
4) Steel Grade: J55, N80, L80, P110, Q125
5) Length: R1(6.10-7.32m), R2(8.53-9.75), R3(11.58-12.80)
6) Connection: STC, LTC, BTC

7) Description
Casing is tubing that is set inside the drilled well to protect and support the wellstream.

8) Application
Casing is the major structural component of a well. Casing is needed to:
a. Maintain borehole stability
b. Prevent contamination of water sands
c. Isolate water from producing formations
d. Control well pressures during drilling, production, and workover operations

9) Casing provides locations for the installation of:
a. Blowout preventers
b. Wellhead equipment
c. Production packers
d. Production tubing