Development And Application Of Insulated Tubing Used For Heavy Oil Thermal Production

Insulated tubing is a professional column for thermal recovery of heavy oil, one ofthe essential downhole tools for thermal recovery of heavy oil. Heat loss in wellbore can begreatly minimized during steam injection by using insulated tubing, it enables more heat toenter the reservoir and improves the steam injection efficiency. The research of steam-driveinsulated tubing has important significance about the long-term development besidethe company and steam-drive’s technology of heavy oil thermal recovery.This article reviews the world heavy oil reserves distribution and development,introduces effect about the insulated tubing, and makes the market forecast and analysis of theindustrialization prospect of insulated tubing.By adding high temperature-resistant elements, adjust the proportion of alloyelements, research to determine the new steel pipe; and experimental study todetermine the reasonable welding process.The joint seal study of insulated tubing by the vacuum structure completed designimprovement of the bushing’s structure.Have finished the trial production of new kind of insulated tubing designed insulatedtubing automatic production line.