Application and Development of Liner Tieback Technology in Deepwater

Abstract:

Due to the characteristics of wellhead system in deepwater, liner hanging and tieback technologies are important in deepwater wells. The paper introduces the conventional liner tieback technology in deepwater both in China and abroad, elaborates in detail about the whole process, working principles and characteristics of the corresponding tools and the field application; puts forward the existing problems. Aiming at the existing problems and according to the common-used liner tieback technologies and the application situation as well as the development conditions in foreign countries, the development direction of two liner tieback technologies, being developed with different ideas, for deepwater drilling are presented.

Key words:deepwater drilling; liner tieback; wellhead; hanger; a section of casing for liner tieback; blowout preventer