METHOD AND SYSTEM FOR PERFORMING WELL OPERATIONS

摘要

The present invention relates to a method for performing well operations from a floating installation comprising a high pressure riser connected to the floating installation through a tension system, and where the riser comprises a housing with an internal diameter larger than an internal diameter of the riser and connected at the top of the riser, where it for performing operations is made an assembly comprising a desired numbers of modules for use in a specific operation, the modules are assembled at the installation, then positioned in the housing and the operation is performed through the assembly. The invention also relates to a riser system for performing operations in a well.