US 2023/0107601 A1 · Modularized Subsea Compressor Train and Method of Installation

Abstract

The invention relates to a method of installing a subsea system (1) comprising the steps of: —installing at least one first foundation structure (13′) on a seabed, wherein the first foundation structure (13′) comprises a connection interface (50′) connectable to a second foundation structure (13″), —installing a first compressor train on the foundation structure (13′), the first compressor train comprising at least a first compressor (8′), —connecting the first compressor train to at least one well flow line (2), —connecting a first compressed fluid line (9′) to an outlet (15′) of the first compressor (8′) and to a common outlet (16) for the compressed fluid in the subsea system (1), wherein the first compressed fluid line (9′) comprises a flow regulating device (24′), —connecting a first connection line (10′,12′) to the first compressed fluid line (9′) at a position upstream of the flow regulating device (24′) and/or to a line (2, 6′) at a position upstream of the first compressor (8), and wherein the first connection line (10′, 12′) is connectable to an additional compressor train positioned on the second foundation structure (13″), the first connection line (10′) comprising a flow regulation device (20′,22′), —connecting a second connection line (11′) to the first compressed fluid line (9′) at a position downstream of the flow regulation device (24′) and wherein the second connection line (11′) is connectable to the additional compressor train positioned on the second foundation structure (13″), the second connection line (11′) comprising a flow regulation device (21′). It is further described an associated a subsea system.

Claims18

Dependent claims

A method of installing a subsea system comprising the steps of:

installing at least one first foundation structure on a seabed, wherein the first foundation structure comprises a connection interface configured to connect to a second foundation structure which is configured to at least partly support an additional compressor train on the seabed, and wherein the additional compressor train increases the subsea system capacity when needed;
installing a first compressor train on the first foundation structure, the first compressor train comprising at least a first compressor;
connecting the first compressor train to at least one well flow line;
connecting a first compressed fluid line to an outlet of the first compressor and to a common outlet for the compressed fluid in the subsea system, wherein the first compressed fluid line comprises a flow regulating device;
connecting a first connection line to the first compressed fluid line at a position upstream of the flow regulating device and/or to a line at a position upstream of the first compressor, wherein the first connection line is configured to connect to the additional compressor train supported at least partly on the second foundation structure, the first connection line comprising a flow regulation device;
and
connecting a second connection line to the first compressed fluid line at a position downstream of the flow regulation device, wherein the second connection line is configured to connect to the additional compressor train positioned at least partly on the second foundation structure, the additional compressor train thereby being connectable to the common outlet, and the second connection line comprising a flow regulation device.

4 more elements

A subsea system (1) comprising:

a first foundation structure configured to be installed on a seabed, the first foundation structure comprising a connection interface configured to connect to a second foundation structure which is configured to at least partly support an additional compressor train on the seabed, wherein the additional compressor train increases the subsea system capacity when needed;
a first compressor train supported by the first foundation structure the first compressor train comprising a first compressor with an inlet which is connectable to a well flow line;
a compressed fluid line connected to an outlet of the first compressor and to a common outlet for compressed fluid in the subsea system, wherein the compressed fluid line comprises a flow regulation device;
a first connection line connected to the compressed fluid line at a position upstream of the flow regulation device and/or to a line at a position upstream of the first compressor, wherein the first connection line is configured to connect to the additional compressor train supported at least partly on the second foundation structure, the first connection line comprising a flow regulation device;
and
a second connection line connected to the compressed fluid line at a position downstream of the flow regulation device, wherein the second connection line is configured to connect to the additional compressor train supported at least partly on the second foundation structure, the additional compressor train thereby being connectable to the common outlet, the second connection line comprising a flow regulation device.

3 more elements

Dependencies are inferred from the claim text.

Modularized Subsea Compressor Train and Method of Installation

Life of this patent

Modularized Subsea Compressor Train and Method of Installation

Life of this patent

Abstract

Claims18