Oceaneering Installs Record Diverless Deepwater HOOPS Tie-in

The Oceaneering International, Inc. Olympic Intervention IV vessel working near the Shell Peridido spar. Shell and Oceaneering have a long-standing relationship that has achieved excellent results in subsea projects in the Gulf of Mexico and other deepwater regions throughout the world.

Who would cut a perfectly good pipeline? Oceaneering worked with Shell to add a new tie-in for the Perdido oil export pipeline to the currently operating Hoover Offshore Oil Pipeline System (HOOPS) pipeline. This is the first time in deepwater operations anywhere in the world that a flowing pipeline without a pre-existing connection has been shut-in and re-configured to tie-in a new pipeline.

The installation took place as the result of the partnership between Shell’s design team and Oceaneering’s installation team. Contributing to the remarkable success story were Oceaneering’s high-technology Olympic Intervention IV support vessel, remotely operated vehicles (ROVs), ROV simulation capabilities, and a diverless installation team that worked in concert to achieve the desired results with only a short, 17-day interruption of downstream production of the HOOPS pipeline.

 

Tie-in Concept

 

The Perdido host facility operates in ultra-deep waters of the Alaminos Canyon Block 857 that had no production export infrastructure. The closest tie-in opportunity was at HOOPS, which extends from the ExxonMobil Hoover platform to Freeport, Texas. HOOPS did not have a connection link so it was necessary to perform the deepwater installation of a connection point to a working pipeline with minimal production shut in. Based on its experience with the repair of the Mars pipeline after Hurricane Katrina, Shell designed the hardware and a subsea process for the Perdido tie-in. Oceaneering facilitated Shell’s design feasibility using diverless intervention with ROVs.

 Oceaneering’s scope for the tie-in consisted of fabricating and assembling the subsea hardware components, then performing system integration, operations planning, simulation, and subsea execution in 4500 fsw. Oceaneering’s Deepwater Technical Solutions (DTS) group developed many of the cleaning, clamping and cutting tools used in the Perdido operation.

 

Mission Simulation

 

Oceaneering used their onshore ROV simulator system to perform the preinstallation sequence. This process allowed the ROV pilots to become familiar with the tools they would be using and to practice installation procedures under true subsea conditions. Once the installation vessel mobilized, a portable ROV simulator system was used offshore on the job.

Oceaneering lifting the dual-hub connection assembly using the 150-mt active heave-compensated crane on the deck of the Olympic Intervention IV.

 

Olympic Intervention IV Vessel

 

The 312-ft Olympic Intervention IV subsea support vessel and crew performed the installation using built-in dual Millennium® Plus ROVs. The Olympic Intervention IV features a 150-mt active heave compensated crane that was used for overboarding the connection equipment. The vessel transmitted streaming video for real-time work observation by shore personnel during the job. The heave-compensated ROV launch and recovery system onboard the Olympic Intervention IV lowered the ROVs from the surface and transported the specialized tooling required for the job.

The weld seam and Fusion Bond Epoxy (FBE) removal tool used subsea to prepare the HOOPS pipeline for adding a tie-in connection. Photo courtesy of Shell.

 

ROV Operation

 

The two separate ROV systems were staffed with multiple crews for 24-hour operations and were utilized for around-the-clock subsea work. The two systems usually worked together to complete the required tasks. In many cases, one ROV would perform the work while the second ROV directed the task from a better position near the worksite. High-definition cameras allowed the pilots to view the hardware in finer detail than possible with conventional filming technology.

Two Millennium® Plus ROVs work in tandem to check pipeline ovality prior to pipeline cutting operations.

 

Subsea Execution

 

The Perdido tie-in was accomplished using an innovative 70-ft long, 14-ft high, 50-ton foundation, which served as a structural support and work table that provided the means to align the pipeline connection. The foundation remains in place on the sea floor, where it can be used for future repair and maintenance operations.

Two lift frames were used to raise the 18-in pipeline about 3 ft off the seabed. Using winches and buoyancy gauged to 60,000 lb, Oceaneering’s crew pulled the foundation into place between the lift frames. With the foundation in place, Oceaneering used an ROV-operated Fusion Bond Epoxy (FBE) and weld seam removal tool to clean the existing HOOPS pipe and prepare it for connector installation. The pipeline was then sealed off locally on each side using isotope-embedded pigs. An ROV verified the pig locations before a 28-ft section of pipe was cut and removed. Spool assemblies were then landed onto the foundation, rolled into place and connected to the pipelines, leaving vertical hubs to re-connect the existing pipeline via a pre-fabricated jumper and an additional hub to connect the Perdido Oil Export pipeline.

Millennium® Plus ROV surveys the completed jumper installation and subsea tie-in at 4500 fsw.

 

Success Story with No Ending

 

The HOOPs tie-in is only one of Oceaneering’s success stories for Perdido and many other deepwater projects. Whenever or wherever there is a challenging subsea opportunity, Oceaneering is always available with its intervention expertise and experience.

OCEANEERING® and MILLENNIUM® are registered trademarks of Oceaneering International, Inc.

Oceaneering International, Inc.
11911 FM 529, Houston, Texas 77041 U.S.A.
Tel: +1 (713) 329-4568
Fax: +1 (713) 329-4951
Website: www.oceaneering.com

Related Articles

Fabricating the Single-Lift Topsides

07/01/2010 The Perdido team faced a tough decision. A conventional topsides design required a series of modules that would have to be fabricated onshore, then...

Technology and Teamwork Achieve World Class Success for Shell Perdido

04/01/2010 In the high-risk ultra deepwater environment, success depends on two key components: technology and teamwork. Shell and Technip have applied innova...

The Bayou Companies provide welding, coating and insulation services around the world

04/01/2010 Straight on the heels of successfully fabricating and supplying pipe line end terminals (PLET) for Shell’s Ursa/Princess waterflood project, ...

Kiewit Offshore Services experience and no surprises approach results in quality services for the offshore oil and gas industry

04/01/2010 KOS’ extensive experience in fabricating large, complex topsides enabled the company to meet the challenges associated with the multi-discipl...

Noble Corp.’s innovative engineering helps Shell to develop Perdido

04/01/2010 Long before the industry dared to dream that operating in the ultra-deepwater of the U.S. Gulf of Mexico could be possible, Noble took a bold and p...

SCHLUMBERGER PIONEERS RECORD DEEPWATER OPEN-HOLE GRAVEL PACK COMPLETIONS

04/01/2010 Two extremes define Perdido’s early development wells: The water is very deep, and the reservoirs are very shallow below the mudline. The dif...

H&Ps Rig 205 ready for Perdido Spar drilling, completions, interventions

04/01/2010

With special modifications, 20,000-ft SCR rig to tackle subsea wells located in up to 9,627 feet of water

HORNBECK OFFSHORE SHELTERED SOME OF PERDIDO’S MOST VALUABLE ASSETS

04/01/2010 As many as 220 people per shift came to work aboard the Perdido deepwater spar during the peak of commissioning and hookup, but it was a short comm...

Halliburton Providing Life-of-Field Solutions for Shell Perdido

04/01/2010 The Shell Perdido project represents an industry milestone in overcoming the technology challenges of ultra-deep waters, subsalt drilling, and comp...
White Papers

Solutions to Financial Distress Resulting from a Weak Oil and Gas Price Environment

The oil and gas industry is in the midst of a prolonged worldwide downturn in commodity prices. While ...
Sponsored by

2015 Global Engineering Information Management Solutions Competitive Strategy Innovation and Leadership Award

The Frost & Sullivan Best Practices Awards recognise companies in a variety of regional and global...
Sponsored by

Three Tips to Improve Safety in the Oil Field

Working oil fields will always be tough work with inherent risks. There’s no getting around that. Ther...
Sponsored by

Pipeline Integrity: Best Practices to Prevent, Detect, and Mitigate Commodity Releases

Commodity releases can have catastrophic consequences, so ensuring pipeline integrity is crucial for p...
Sponsored by

AVEVA’s Digital Asset Approach - Defining a new era of collaboration in capital projects and asset operations

There is constant, intensive change in the capital projects and asset life cycle management. New chall...
Sponsored by

Transforming the Oil and Gas Industry with EPPM

With budgets in the billions, timelines spanning years, and life cycles extending over decades, oil an...
Sponsored by

Asset Decommissioning in Oil & Gas: Transforming Business

Asset intensive organizations like Oil and Gas have their own industry specific challenges when it com...
Sponsored by

Squeezing the Green: How to Cut Petroleum Downstream Costs and Optimize Processing Efficiencies with Enterprise Project Portfolio Management Solutions

As the downstream petroleum industry grapples with change in every sector and at every level, includin...
Sponsored by
Available Webcasts


The Resilient Oilfield in the Internet of Things World

When Tue, Sep 22, 2015

As we hear about the hype surrounding the Internet of Things, the oil and gas industry is questioning what is different than what is already being done. What is new?  Using sensors and connecting devices is nothing new to our mode of business and in many ways the industry exemplifies many principles of an industrial internet of things. How does the Internet of Things impact the oil and gas industry?

Prolific instrumentation and automation digitized the industry and has changed the approach to business models calling for a systems led approach.  Resilient Systems have the ability to adapt to changing circumstances while maintaining their central purpose.  A resilient system, such as Maximo, allows an asset intensive organization to leverage connected devices by merging real-time asset information with other critical asset information and using that information to create a more agile organization.  

Join this webcast, sponsored by IBM, to learn how about Internet of Things capabilities and resilient systems are impacting the landscape of the oil and gas industry.

register:WEBCAST



On Demand

Taking the Headache out of Fuel License and Exemption Certificates: How to Ensure Compliance

Tue, Aug 25, 2015

This webinar, brought to you by Avalara, will detail the challenges of tax document management, as well as recommend solutions for fuel suppliers. You will learn:

-    Why it’s critical to track business partner licenses and exemption documents
-    The four key business challenges of ensuring tax compliance through document management
-    Best practice business processes to minimize exposure to tax errors

register:WEBCAST


Driving Growth and Efficiency with Deep Insights into Operational Data

Wed, Aug 19, 2015

Capitalizing on today’s momentum in Oil & Gas requires operational excellence based on a clear view of what your business data is telling you. Which is why nearly half* of oil and gas companies have deployed SAP HANA or have it on their roadmap.

Join SAP and Red Hat to learn more about using data to drive process improvements and identify new opportunities with the SAP HANA platform running on Red Hat Enterprise Linux. This webinar will also show how your choice of infrastructure impacts the performance of core business applications and your ability to achieve data-driven insights quickly and reliably.

*48% use SAP, http://go.sap.com/solution/industry/oil-gas.html

register:WEBCAST


OGJ's Midyear Forecast 2015

Fri, Jul 10, 2015

This webcast is to be presented by OGJ Editor Bob Tippee and Senior Economic Editor Conglin Xu.  They will summarize the Midyear Forecast projections in key categories, note important changes from January’s forecasts, and examine reasons for the adjustments.

register:WEBCAST


Emerson Micro Motion Videos

Careers at TOTAL

Careers at TOTAL - Videos

More than 600 job openings are now online, watch videos and learn more!

 

Click Here to Watch

Other Oil & Gas Industry Jobs

Search More Job Listings >>
Stay Connected