Downhole casing system

摘要

The present invention relates to a casing module for being part of a downhole casing system, comprising a base pipe extending in a longitudinal direction and having a circumference, a functional assembly mounted over the base pipe to define a casing module flow path between the functional assembly and the base pipe, and a main flow path arranged substantially in a center of the base pipe and extending in a longitudinal direction of the casing system, wherein at least a part of the casing module flow path is an annular flow path extending both in the longitudinal direction of the base pipe and continuously around the entire circumference of the base pipe, and the base pipe has end sections at which a plurality of supporting structures protrude from an outer surface to provide support for the functional assembly, the supporting structures defining a plurality of casing module flow paths extending in the longitudinal direction. The present invention furthermore relates to a downhole casing system for performing operations in a wellbore containing well fluid.

主权项

1. A casing module for being part of a downhole casing system, comprising:
a base pipe extending in a longitudinal direction and having a circumference, a functional assembly mounted over the base pipe to define a casing module flow path between the functional assembly and the base pipe, and a main flow path arranged substantially in a centre of the base pipe and extending in a longitudinal direction of the casing system, wherein at least a part of the casing module flow path is an annular flow path extending both in the longitudinal direction of the base pipe and continuously around the entire circumference of the base pipe, the base pipe has end sections at which a plurality of supporting structures protrude from an outer surface to provide support for the functional assembly the supporting structures defining a plurality of casing module flow paths extending in the longitudinal direction, and wherein the annular flow path extends substantially the entire distance between the supporting structures at one of the end section to the supporting structures at the other end section.