Protecting Threaded Surfaces on Tubing Strings Used in the Oil and Gas Industry

Thursday, May 14, 2015: 9:20 AM
Room 101A (Long Beach Convention and Entertainment Center)
Dr. Sergei Mankovsky , Technological systems for protective coatings, Moscow, Russia
Dr. Alexander Rigin , Technological systems for protective coatings, Moscow, Russia
Mr. Dinar Ishmukhametov , Technological systems for protective coatings, Moscow, Russia
Mr. Grachev Oleg , Technological systems of Protective Coatings, Ltd., Moscow, Russia
Dr. Lev Baldaev , TSPC Ltd., Moscow, Russia
The paper reviews an research to design technology to apply protective coatings to threaded surfaces on tubing strings used in the oil & gas industry. This tubing is used to operationalize oil & gas wells, transport gases and fluids, and perform fixing and tripping jobs.

Tubing strings are operated in corrosive environments, especially in fields with high contents of sulfur and other chemical compounds, and are subjected to abrasive wear, fluctuating pressures and alternating loads during in/out spinning. These factors contribute to a higher accident rate during field tripping operations (~80% accidents involving borehole equipment). The key cause of these accidents is the destruction of threaded joints.

An efficient way to address the problem is to use pipes with new thermal spraying protective coatings. Accordingly, a series of coatings have been developed and operationally tested, thus opening up the next work stage, i.e. full-scale tests in the field.

See more of: Corrosion 2
See more of: Thermal Spray Applications