METHOD AND SYSTEM OF FUNT WELL EQUIPMENT INSTALLATION Russian patent published in 2017 - IPC E21B43/17 E21B33/35 

FIELD: mining engineering.

SUBSTANCE: invention provides a method and system for installing an underwater flowline wellbore, comprising: creating a trench buried in the seabed at a well site of a hydrocarbon deposit; moving a floating offshore platform, connected to the foundation. The platform has a top structure and a caisson with walls passing downward, forming an internal volume between the walls. The foundation is connected to the walls of the caisson, and a buoyancy control device is created in the walls of the caisson; descent of the offshore platform with a foundation in the pit; drilling from the upper structure to the hydrocarbon reservoir under the foundation for the construction of the well; Installation of a well blowout. Fountain equipment of the well is installed in a trench buried in the seabed; connection of the fountain equipment of the well to the collecting pipeline; The release of the offshore platform from the foundation and the reuse of the offshore platform to install another foundation on another designated well site.

EFFECT: improving the reliability of the installation equipment of wells flowing with foundation.

9 cl, 13 dwg