公开(公告)号：US20240344635A1

公开(公告)日：2024-10-17

申请号：US18682554

申请日：2022-08-11

Applicant: Chevron U.S.A. Inc.

Inventor： Alireza Mazaheri ,  Farzan Parsinejad ,  Kenneth Andrew Peoples ,  Leo G. Caffrey ,  Antonio C.F. Critsinelis

IPC: F16L1/12 ,  H02G1/10 ,  H02G9/02 ,  H02G9/06

CPC classification number: F16L1/123 ,  H02G1/10 ,  H02G9/025 ,  H02G9/06

Abstract: An artificial cable trench (ACT) includes a body and a trench formed into the body. The trench is configured to hold a cable, umbilical, or similar feature. The ACT may be positioned along a seabed or shoreline to stabilize the cable and thereby prevent movement and eventual damage to the cable. The body of the ACT is shaped to overcome the flow induced loads caused by the relative motion between the cable and the surrounding waves and sea currents as well as providing effective friction/engagement with a contact surface (e.g., a shoreline surface). The ACT may have features that result in self-burying in sand and/or preventing lateral movement.

公开(公告)号：US09850719B1

公开(公告)日：2017-12-26

申请号：US15495012

申请日：2017-04-24

Applicant: Chevron U.S.A. Inc.

Inventor： Brian Ferrier ,  Alireza Mazaheri

IPC: E21B17/01 ,  E21B17/12 ,  E21B17/10

CPC classification number: E21B17/01 ,  E21B17/1007 ,  E21B17/12 ,  E21B19/004

Abstract: An apparatus enables modifying a riser's operating parameters for transporting production fluids from a subsea well to an offshore production facility after an initial period of production to address changes over time in the conditions of the reservoir and/or the riser without removing the original riser. An insert riser having a smaller diameter is inserted into the riser after the initial period. The original riser has a recessed seal face for receiving seal element(s) and a recessed lock groove for receiving a locking ring. An intervention coiled tubing having a sleeve removal tool is inserted into the riser to engage a protective sleeve covering the recessed seal face. The tubing is pulled to the floating structure thereby removing the protective sleeve and the temporary retaining ring from the production riser, exposing the recessed seal face. The insert riser can then be inserted into the riser and locked into place.