C-Innovation Plays a Key Role in First Oil at Salamanca for LLOG Exploration

Oct 21, 2025 | Key Projects, News

Key Projects

C-Innovation (C-I), an aﬃliate of Edison Chouest Offshore (ECO) and its family of companies, has successfully completed a series of light construction campaigns on the Salamanca field in the Gulf of America in partnership with LLOG Exploration and Pinnacle Engineering.

The completion of major subsea installation operations utilized the company's specialized marine assets and technical expertise to deliver comprehensive offshore services. C-I deployed the MPSV Dove equipped with a 150-ton crane and C-Leader offshore supply vessels (OSVs) to support critical subsea infrastructure installations over a 100-day operational period.

The project scope encompassed multiple complex subsea installations, demonstrating C-I's capabilities in handling large-scale offshore operations. The total weight of the most complex lift was a jumper weighing 143,245 lbs, including spreader bar, rigging, and jumper components. Hub-to-hub length was 96 ft 3-5/8 in. in a Z-shape configuration.

Nathan Wolford, project manager, C-I, said, “This project demonstrates C-I’s ability to execute complex subsea installations with precision, utilizing the Dove vessel’s 150-ton crane to successfully install a substantial 16 in. oil export jumper. The demanding Z-shaped configuration and significant weight requirements showcased not only advanced engineering execution but also the specialized marine handling expertise of our team.”

Completed installations included:

1 x 16 in. gas export jumper installation
1 x 10 in. gas export jumper installation
1 x 16 in. oil export jumper installation featuring Z-shaped configuration
2 x Leon flowline jumpers
2 x Leon well jumpers
1 x Castile well jumper

Additional operations included comprehensive support for pigging and dewatering operations, precision metrology services, and hull inspection services.

This series of installations contributes to a major milestone in the Gulf of America Leon-Castile field development, with first oil now flowing to the Salamanca hub.

C-Innovation Completes Successful Decommissioning Project in Gulf of America

Aug 28, 2025 | Key Projects

Key Projects

C-Innovation (C-I), an affiliate of Edison Chouest Offshore (ECO) and its family of companies, has successfully completed the decommissioning of the Joliet tension leg platform (TLP) in the Gulf of America (GOA).Joliet was the oldest TLP installed in the GOA, originally installed in 1989 in 1,725 ft of water. The decommissioning contract involved the multipurpose support vessel (MSV) Island Venture, along with its ROVs, cranes and back deck support services.The scope of work for the Island Venture included the cutting of two flexible risers. The 8 in. and 10 in. risers were then abandoned in a pre-determined area on the sea floor. Additionally, C-I was responsible for detaching 12 mooring tendons from the Joliet TLP. These tendons, each over 1,700 ft long, were cut into 305 separate sections aboard the Island Venture and then transferred to an offshore support vessel (OSV) for transport to a shore base for further processing. The decommissioning operation was safely monitored by C-Survey, a division of C-I, in coordination with the Joliet TLP and its three positioning tugboats.

George Wilson, project manager, C-I, said, "The C-I team executed the project safely and efficiently, completing it ahead of schedule without any accidents or incidents. Our success was driven by strong offshore leadership, careful planning, a focus on safety and the lift capacity of the Island Venture crane. The original agreement was for 26 days with extension options, which were exercised, bringing the total to 36 days. The contract was signed on January 15, 2025, work began on May 2, and the project was successfully completed on June 3, 2025."

C-Innovation Successfully Completes Stem Clamp Installation on BP’s Mad Dog Spar

Sep 3, 2020 | Key Projects, News

Key Projects

C-Innovation, LLC (C-I), an aﬃliate of Edison Chouest Offshore (ECO) and its family of companies, has completed the installation of several stem clamps for BP beneath the Mad Dog Spar in the Gulf of Mexico, utilizing its subsea inspection, maintenance and repair (IMR) remotely operated vehicle (ROV) vessel, MV Dove.

Throughout the planning process, several risks were mitigated for C-I and BP assets by modifying the ROV. This included armoring with Lexan polycarbonate, design of new manipulator mounting subframes to extend the reach of the manipulators by 12 in. and installation of enhanced manipulator controls systems. The project was a success and completed 10 days ahead of BP’s schedule.

Ryan Combs, project manager, C-Innovation, said, “C-I was engaged by BP early in the project lifecycle to provide input into the design of the subsea hardware and installation capabilities of the ROV, which would face limited access to the installation location beneath the facility. The C-I project team engaged with the ROV operations groups, offshore managers and tooling group in order to evaluate the risks involved with the execution of the project and ultimately secured a successful outcome.”

Adam Kluge, BP ARP, said, “C-I overcame some complex demands with a challenging method of installation in very tight working quarters within the structure and did so safely, with great skill, in half the anticipated timeframe. The success of the execution was directly attributable to excellent teamwork and communication throughout each phase. We are very fortunate to work with C-I on our projects. They contribute an excellent work ethic, great interpersonal skills and are adept at creating a team out of a group of individuals.”

Flowline Hydrate Remediation

Mar 27, 2018 | Key Projects

Key Projects

Client: W&T Offshore

Project: Fastball Flowline Hydrate Remediation

Scope of Work

Remediation/removal of complete hydrate blockage and flushing of flowline to satisfy government requirements for decommissioning was performed. The project took 19 days to complete. The tie-back well had already been de-completed and the jumper removed. Access was through a high-flow Hotstab port on a flooding cap installed on the PLET. The client engaged a third-party engineering firm to define and guide initial, novel methodology for remediation of hydrate blockage. Following unsuccessful efforts, Team Venture - with approval of client - began our own field-proven methodology for remediation with resounding success.

Acid Stimulation of Wells

Mar 27, 2018 | Key Projects

Key Projects

Client: Anadarko Petroleum Company (APC)

Project: Acid Stimulation of Wells

Location: KC875 #1 (Lucius), GC770 #1 (Caesar-Tonga), and GC683 #3 (Caesar-Tonga)

Scope of Work

The prescribed acid treatment to stimulate each well was pumped down dual, open-water coiled tubing (CT) downlines to the subsea well location. The TEI 15K STIM package was used to interface with the well’s subsea tree (XT) and the acid entered the XT and completion via a third-party choke insert. Following completion of pumping, each well restarted production and returns were flowed back to the production facility via the existing production flowline(s).

Typically, this type of scope of work is completed with a rig, stimulation vessel and marine riser with BOP via direct vertical access - which can, in some cases, include necessary wireline services. Pumping outside of a true “open hole” and flowing acid returns into the existing pipelines reduces cost, duration and HSE exposure, allowing an operator more options and opportunity to employ this IOR method.

Currently, we are working actively with clients to potentially use the Island Venture to handle the full scope of pumping, returns and well restart for well stimulation jobs. Once a safe and successful solution is defined, we will have changed the rig-schedule driven market to include job mobilizations aboard suitable vessels of opportunity.

Flowline Segment Hydrate Remediation

Mar 9, 2018 | Key Projects

Key Projects

Client: Eni Petroleum

Project: Longhorn Flowline Segment Hydrate Remediation

Location: Gulf of Mexico, Mississippi Canyon, Block 502

Scope of work

The primary objective of this project was to clear the flowline of a hydrate blockage to restore production from well #3. The extent of hydrate formation was unknown. The only access was through 1” hotstab port in the ROV panel on the far side of the pipeline segment. We were required to allow for the rest of the system to continue production while still maintaining the dual barrier (from live production) and effectively remediating the blockage. We used topside pumping and separation capability to remove potential mudline restriction which competitors’ systems may introduce. Additionally, nitrogen injection and gas lift were utilized to remove liquid contents from one side of the blockage, effectively reducing pressure and providing a dry environment (both of which aid in the dissociation of hydrate formations.)