US 2014/0193205 A1 · METHODS, APPARATUS AND SYSTEMS FOR CONVEYING FLUIDS

Abstract

Disclosed are pipeline systems, methods and apparatus for handling fluids in offshore oil and gas production. The systems disclosed allow subsea functional lines having diameters which differ by more than 2 standard API 5L pipeline diameters to be placed in fluid communication in such a way that the systems are piggable. Pipeline connection terminations are installed to facilitate connection of such functional lines. Such systems offer solutions to problems related to installing subsea pipeline in rough terrain, over subsea canyons and subsea scarps, installing marine risers, and long tiebacks.

Claims21

Dependent claims

A system for conveying fluids, comprising:

a. at least one riser having a riser diameter attached to an offshore production platform for conveying fluid to the production platform;
b. at least one functional line having a functional line diameter in fluid communication with the at least one riser on the seabed for conveying fluid to the at least one riser;
and
c. a pipeline crossing termination between the at least one riser and the at least one functional line on the seabed;
wherein the functional line diameter and the riser diameter differ by more than 2 standard API 5L pipeline diameters.

2 more elements

Dependencies are inferred from the claim text.

Methods, apparatus and systems for conveying fluids

Life of this patent

Methods, apparatus and systems for conveying fluids

Life of this patent

Abstract

Claims21