Casing & Tubing Running Pipe Inspection & Repair

Pipe Inspection & Repair

COSL maintains three domestic-sited operation bases containing six workshops and inventories more than 120 complete sets of specialized and specified equipments. All bases are fully complemented by a team of experienced and highly trained professional personnel. Adhering to API 5CT, API SPEC7-1, API Q1 and related standards, COSL can confidently offer its customers high standards of excellence in providing inspection and repairs to oilfield equipments.

The main services include:

· oilfield non-destructive testing ( NDT )
· drilling tools NDT
· down-hole tools assembly and disassembly
· pipe thread machining
· BOP repair and installation
· pipe and casing head processing
· oil tools rental

Casing & Tubing Running

COSL has five domestic-sited operation bases and more than 400 professional personnel. Being certified by DNV, it can provide various tailor-made services supporting by its own offshore conductor-driving penetration analysis software, casing cutting and beveling equipment, and adapted 26" casing power tongs. COSL has been widely acclaimed by CNOOC, Petro China, Shell, ,ENI , Conoco-Phillips, Devon Energy , and ROC Oil for providing excellent quality, high efficiency, and superior service.

The main services include:

· conventional casing and tubing running service of 36"to 2⅜"
· casing of 13CR-alloy and tubing running service ranging from 13⅜" to 2⅜"
· HTHP and special-sizes casing and tubing running
· highly-deviated-well surface casing running
· special thread type casing and tubing running
· conductor driving
· casing cutting
· locking/unlocking service
· top driving casing running
· wellhead assembling/ disassembling