Device for installation and flow test of subsea completions
AssigneeFMC Technologies, Inc.
InventorsNicholas Gatherar, Graeme John Collie
Life of this patent
Estimating the term…
Abstract
A running string for a subsea completion comprises an upper section (70) which may be a coiled tubing (CT) injector unit as shown, or a wireline lubricator (FIG. 8). A lower section (60) provides wireline/CT access to production/annulus bores of a tubing hanger (not shown) attached to tubing hanger running tool (62). A flow package (64) in the lower section (60), together with BOP pipe rams (86) and annular seal (88), directs production and annulus fluid flows/pressures to the BOP choke/kill lines (78/76). The upper and lower sections allow installation and pressure/circulation testing of, and wireline/CT access to, a subsea completion, without the use of a high pressure riser.
Claims17
A landing string assembly for installing a subsea completion through a marine riser which is connected to a BOP, the landing string assembly comprising:
- a flow package which comprises an elongate body
- that is lowerable from a surface vessel through the marine riser and is engageable in use by at least one of the pipe rams and the annular seals of the BOP;
- a tubing hanger running tool which is connected to or formed integrally with the body;
- a first fluid flow conduit which extends through a portion of the body and the tubing hanger running tool and comprises a first end which is connectable with one of a production bore or an annulus bore in a tubing hanger and a second end which is connected to a first port in the body;
- wherein engagement of at least one of the pipe rams and the annular seals forms a sealed flow connection between a choke or kill line of the BOP and the first port;
- and
- at least one of a wireline lubricator or coiled tubing injector which comprises a least a portion that is lowerable through the marine riser and mountable to an upper end of the body.
Dependencies are inferred from the claim text.