The Gulf of Mexico’s decommissioning specialisit Promethean Energy has successfully completed a multi-client campaign in the South Timbalier lease area for the plugging and abandonment of an orphaned well on a storm-damaged platform.
The high-risk project (thanks to extensive hurricane-related structural damage) was completed sans incidents and under budget, reinforcing Promethean’s com8ittment to retiring ageing offshore infrastructure while supporting the broader goals of the BSSE’s orphaned well programme.
The project entailed reinstating well control barrier on an orphan well and completing abandonment activities. Structural instabilities, deteriorated well barrier, hydrocarbon leaks and subsurface complexities posed significant risks to the operation, yet through phased execution, proactive risk mitigation and an experienced team, the project was completed incident-free.
The initial inspection of the well was conducted in May 2025, revealing extensive damage including a missing boat landing, the heliport having been torn away, the wellhead access deck was no longer intact, and the main deck support column was detached from the stabbing guide.
The well was also venting gas from the production casing downstream of the gate valve. Drone surveys and high-res imagery uncovered severe structural compromise at a jacket leg weldment, and the desk leg had been forcibly displaced into the jacket leg, exceeding material deformation limits. The pile-to-jacket connection on the leg has also completely failed. The data and stability assessments indicated a high-risk of structural collapse.
Despite the high risks, the operator successfully executed the decommissioning project using a combination of advanced inspection tools, methodical engineering reviews and meticulous planning. The site has been secured without environmental harm.
Expro, a global provider of energy services, has set a new world record by deploying the heaviest casing string ever installed.
The achievement was made possible through the use of its advanced Blackhawk Gen III Wireless Top Drive Cement Head combined with SKYHOOK technology, during a major project in the Gulf of Mexico for a supermajor operator.
The milestone was reached aboard the Transocean Deepwater Titan, an eighth-generation ultra-deepwater drillship. With a maximum hook load capacity of 2.849 million pounds, the casing string installation surpassed all previous offshore benchmarks in deepwater well construction.
This accomplishment highlights Expro’s commitment to advancing innovation and performance in offshore well construction. The Gen III cement head with SKYHOOK is currently the industry’s only cementing system rated to three million pounds combined, designed to ensure enhanced safety, operational efficiency, and reliability in some of the harshest offshore environments.
The Blackhawk Gen III Top Drive Cement Head is specifically designed for rotating while cementing drill pipe-deployed casing strings or liners. When used with the SKYHOOK Cement Line Make-Up Device, the wireless cement heads improve safety by eliminating the requirement for personnel above the rig floor, while simultaneously boosting operational efficiency.
Engineered to withstand both full pressure and tensile capacity — rated at 15,000 psi and three million pounds respectively — the Gen III cement head was pivotal to the record-setting operation. Unlike other cementing systems that require derating under high-pressure conditions, Expro’s Gen III maintained consistent performance and integrity throughout.
The operator’s campaign is regarded as one of the most technically challenging well construction projects globally. With exceptionally high tensile loads on casing due to deep set points, the operation required a cementing solution engineered for extreme conditions. Expro applied its technical expertise to deliver a custom high-capacity cement head specifically tailored to the demands of the project.
“This deployment marks a step-change in offshore cementing, setting a new standard for ultra deep high pressure targets,” said Jeremy Angelle, Vice President of Well Construction at Expro.
“We are extremely proud to have supported this operator in achieving this critical milestone with a robust, high-performance cement head that delivered safely and reliably under record-setting loads,” Angelle added.
Following a comprehensive wireline programme, acquiring core, fluid and log data for evaluation, Talos Energy has confirmed successful drilling results from the Daenerys exploration prospect located in the US Gulf of America Walker Ridge blocks 106, 107, 150, and 151.
Drilled approximately 12 days ahead of schedule and delivered around US$16mn under budget, the West Vela deepwater drillship reached a total vertical depth of 33,228, encountering oil presence in multiple high-quality, sub-salt Miocene sands.
With the discovery well currently suspended for future use, the company is now planning to take up an appraisal well to further define the discovered resource.
"We are encouraged by the results of our Daenerys discovery well, which confirms the presence of hydrocarbons and validates our geologic and geophysical models. We believe these results support Talos's pre-drill resource assumptions. We are now working closely with our partners to design an appraisal program that will further delineate this exciting discovery. We anticipate spudding the appraisal well in the second quarter of 2026," said Talos President and Chief Executive Officer, Paul Goodfellow.
Talos, as operator, will hold a 27% working interest, Shell Offshore Inc. will hold 22.5%, Red Willow will hold 22.5%, Houston Energy, L.P. will hold 10%, Cathexis will hold 9%, and HEQ II Daenerys, LLC will hold 9%.
Following the first phase of the Dubhe-1 well programme, Pantheon Resources has successfully drilled, logged and cored the Dubhe-1 pilot hole to a total measured depth of 12,833 ft, equivalent to 8,699 ft true vertical depth.
A deviated pilot hole had to be tackled to gather cores and logs to select the optimum landing zone for a subsequent lateral sidetrack in the primary SMD-B zone. The well successfully reached the planned true vertical depth and achieved all planned target reservoir penetrations -- both primary and exploration objectives.
The primary target of Dubhe-1 was the topset horizon (SMD-B), appraising the already discovered resource. Additionally, the well was designed to encounter three further exploration horizons (Prince Creek, SMD-C and the Slope Fan System), none of which have previously had any resource estimate attributed to them. Logs confirm additional prospective resource upside in these horizons.
Post analysis of the thickness and quality of the primary target topset, the company has confirmed that the SMD-B has exceeded the upside pre-drill expectations. The gross thickness of the hydrocarbon column in this interval was measured at 565 ft true vertical thickness; exceeding pre-drill expectations by 26%.
Following this, the company plans to drill, and subsequently flow test the planned sidetrack lateral in the SMD-B horizon to refine the production well type curve.
Dubhe-1 has confirmed a gross 565 ft TVT hydrocarbon bearing column in the SMD-B primary target horizon. The hydrocarbon mix between oil, NGLs and gas will be determined after flow testing.
Erich Krumanocker, chief development officer, said, "We are delighted to announce the Dubhe-1 pilot hole results as a success. The well confirms the presence and quality of the oil and gas reservoirs in the Ahpun field, exceeding our pre-drill expectations. We are now transitioning toward field development planning in support of capital efficient commercial production. The upside presented by the SMD-C and Slope Fan zones highlights the enormous potential in our portfolio."
C-Innovation has completed the decommissioning of the Joliet tension leg platform (TLP) in the Gulf of America.
Joliet was the oldest TLP installed in the Gulf (since 1989) in 1,725ft of water. The decommissioning contract involved the MSV Island Venture, along with its ROVs, cranes and back deck support services.
Island Venture was responsible for cutting the two 8 inch and 10 inch flexible risers which were then abandoned in a pre-determined area of the sea floor.
Additionally, the scope included the detaching of 12 mooring tendons from the Joliet TLP. The tendons, each measuring over 1,700ft long, were cut into 305 separate sections aboard the Island Venture and transferred to an OSV to transport to shore.
George Wilson, Project Manager at C-Innovation, said, “The C-Innovation team executed the project safely and efficiently, competing 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 15 January, 2025, work began on 2 May, and the project was successfully completed on 3 June, 2025.”
Autonomous subsea software company, Nauticus Robotics, has announced the Aquanaut Mark 2 has set a new record for ultra-deepwater depth off the coast of Louisiana.
The flagship fully electric-operated underwater vehicle reached depths of 2,300 metres underwater, opening new opportunities for underwater monitoring.
Daniel Dehart, Nauticus’ VP of Field Operations, said, “I am pleased to report our vehicle has reached unprecedented ultra-deepwater depths without the need of a tether. Reaching this new depth is an exciting milestone, and we have obtained significant data on both Aquanaut and ToolKITT from these tests – particularly regarding acoustic communication challenges in ultra-deepwater.
“Our Autonomous Solutions team will spend the necessary time to analyse the new data and apply this information to optimise performance for our ultra-deep applications and across our portfolio.”
CEO John Gibson commented, “The more time we spend untethered in the water, the greater our operational and technical lead expands in the market. I want to thank our employees for their dedication to innovating for our customers and their offshore projects. I’m proud that our team is constantly finding solutions to strengthen our capabilities underwater and enhance revenue opportunities for projects at these depths.”
Helix Energy Solutions has been awarded a multi-year contract for production enhancement and well abandonment services in the Gulf of America with an undisclosed major operator.
The contract will commence next year and calls for the provision of either the Q5000 or Q4000 riser-based well intervention vessel, a 10k or 15k Intervention Riser System (IRS) and remotely operated vehicles.
Helix’s services will cover operations from fully integrated production enhancement to full integrated plug and abandonment well services.
Scotty Sparks, Executive Vice President and Chief Operating Officer, said, “We are pleased to expand our backlog by successfully executing another multi-year contract for well intervention services. This contract underscores our commitment to delivering safe, cost-effective and efficient production enhancement and abandonment services in the Gulf of America, supported by Helix’s advanced vessels, decades of industry-leading experiences, and the collaborative capabilities of our Subsea Services Alliance.”
The contract includes equipment and services as part of the Subsea Services Alliance: a strategic partnership between Helix and SLB.
Kent, the global integrated energy services partner is acquiring Exceed (XCD) Holdings Limited, to create a global leader in decommissioning, well management and sub surface engineering services.
This acquisition will strengthen Kent’s position in the fast-growing global decommissioning market, set to rise from US$8bn to US$16bn a year by 2035, as the company aims to become a full-service partner across the energy lifecycle, including late-life operations through to the safe and successful decommissioning of customer assets.
Exceed, headquartered in Aberdeen and active in over 40 countries, has two decades of experience in delivering complex offshore well projects, with over 70 wells drilled and more than 150 decommissioned to date. Its proven delivery model and track record will combine with Kent’s global platform and project execution strength to meet growing demand for safe, compliant and cost-effective end-of-life solutions for oil and gas infrastructure.
The deal could also open up significant energy transition opportunities given Exceed is already repurposing reservoirs for carbon capture and hydrogen storage projects, and Kent also has expertise in this area.
“Our agreement to acquire Exceed is a bold step into the future of responsible energy operations,” said John Gilley, CEO of Kent. “Exceed’s specialist capabilities in well and reservoir management, coupled with their strong reputation in decommissioning, complement our vision of offering full lifecycle services to our clients. Together, we will be uniquely positioned to help the industry navigate energy security, net-zero mandates, and the safe retirement of offshore assets.”
Ian Mills, Managing Director of Exceed, commented, “We’ve built Exceed over 20 years with a commitment to technical excellence, innovation and client trust. Joining forces with Kent is the natural next step. It gives us the financial backing and global reach to scale our expertise to new markets and opportunities, while preserving the same culture, entrepreneurial spirit and values that define us.”
The transaction is expected to be completed later this year.
French energy giant TotalEnergies has secured a 25% stake in a portfolio of 40 offshore exploration leases in the U.S. Gulf of Mexico, operated by Chevron. The agreement strengthens TotalEnergies' presence in U.S. offshore energy projects and supports its goal of boosting oil and gas production by 3% annually through 2030, focusing on low-cost, low-emissions output.
The newly acquired federal leases are located across three major areas: 13 blocks in Walker Ridge, 9 in Mississippi Canyon, and 18 in East Breaks. These zones are known for their resource-rich deepwater potential, with Chevron continuing as the operator of the assets.
TotalEnergies already holds minority interests in four Chevron-operated offshore fields in the Gulf of Mexico, further reinforcing its long-term collaboration with the Texas-based energy company.
In the liquefied natural gas (LNG) sector, TotalEnergies is the leading U.S. LNG exporter, managing over 10 million metric tons per year under long-term contracts. Historically, the company has sourced LNG from local producers, but recently it has shifted toward more upstream investments.
In 2024, TotalEnergies also acquired stakes in two Texas shale gas fields from Lewis Energy Group. This move gives the company direct access to natural gas at the U.S. Henry Hub price benchmark—an important step to ensure cost-efficiency in LNG exports amid changing market conditions.
This latest offshore deal marks a significant step in TotalEnergies' strategy to expand in low-carbon oil and gas production while ensuring energy security and cost stability through integrated supply chain management.
Following horizontal well completion activities in the Lower Selma Chalk area of the Gwinville Field, Mississippi-focussed producer, Southern Energy Corp, has reported average natural gas rates at 3.6 MMcfe/d (99% gas), a marked rise from the original LSC horizontal wells. Ever since, the company has been tapping into its commercial value, driven by the exceptional well flow to facilities.
This comes from the first of the company's three remaining drilled but uncompleted (DUC) horizontal wells from the Q1 2023 drilling programme, the GH LSC 13-13 #2 wellbore.
The well was stimulated with 25 fracture stages, placing over 5.3 mn lbs of proppant into the wellbore. While this increased proppant intensity by a striking 70%, targeted stimulation design changes boosted the predictability and speed of the fracture operations. To top that, it reduced the overall completion cost down to US$2.2mn by more than 10% below pre-job estimates. This and other cost savings have allowed the company to cut down such operational budgets by 20%.
Southern will continue to monitor both regional natural gas pricing and well performance from the GH LSC 13-13#2 over the upcoming months before making a decision on the completion timing of the remaining two DUC wells and will update the market at that time. The remaining two DUC wellbores have been drilled in the LSC and City Bank formations.
Ian Atkinson, President and Chief Executive Officer of Southern, said, “We are very pleased with the early flowback results of the GH LSC 13-13 #2 well that will help us establish a longawaited type curve for the remaining potential 60+ LSC horizontal locations in our vast Gwinville inventory. We expect the lower decline from the LSC reservoir to support the ~ 3.5 Bcfe recovery per well predicted by both management and our third-party reserve evaluator. The Southern operations team has safely executed this operation at 10% below our original completion estimate, which not only drives a much quicker payout on this capital but will also allow Southern to start redeveloping the Gwinville Field much sooner as natural gas prices are still expected to improve materially into the back half of 2025 and continue into 2026.
"From a revenue generation perspective, since bringing these significant new production volumes on-line in late June with minimal incremental operating costs, Southern has also greatly benefited from a daily natural gas basis premium of approximately 17% above Henry Hub pricing due to the start of warmer seasonal temperatures and associated natural gas fired power demand in the southeast U.S. which we expect to continue or improve throughout the summer. We look forward to providing these improved cash flow results from additional Q3 volumes in November 2025.”
As part of sustainability-driven initiatives to expand domestic energy production in the US Gulf of America, bp has started up the Argos Southwest Extension project.
This development is the first of a decade-long initiative by the oil major.
The project will generate an additional 20,000 barrels of oil equivalent per day of gross peak annualised average production at the existing Argos platform. Argos, which began production in 2023, is bp’s fifth operated production platform in the Gulf of America with a gross production capacity of up to 140,000 barrels of oil per day.
“The Argos expansion underpins our commitment to investing in America, growing our US offshore energy production safely and efficiently,” said Andy Krieger, bp’s senior vice president for the Gulf of America and Canada. “This project also kicks off a period of significant growth for bp in the Gulf of America, which will continue to play a critical role in delivering secure and reliable energy the world needs today and tomorrow.”
The Argos Southwest Extension project will add three wells and include a new drill center roughly 5 miles southwest of Argos. The subsea tieback, which connects new wells to existing offshore production facilities through pipelines, will extend the footprint of the Mad Dog field discovered in 1998.
The Argos Southwest Extension project was delivered seven months ahead of schedule by implementing concurrent workstreams, optimising project management and engaging in early procurement.
“Argos’ expansion project demonstrates how bp can swiftly bring new barrels to market safely and efficiently,” said Gordon Birrell, bp’s executive vice president of production and operations. “Our ability to move from resource discovery to first oil at record pace underscores our relentless pursuit to grow shareholder value.”
Following Argos Southwest Extension, bp plans to deliver two additional expansion projects in the Gulf of America by 2027.
Oceaneering International has announced its Subsea Robotics segment has upgraded the Ocean Intervention II (OI2), an oceanographic research vessel, in order to perform simultaneous autonomous survey operations.
The purpose-built OI2 was first launched in 2000 to carry out geophysical and geotechnical surveys. Earlier this year the vessel underwent significant upgrades to expand its capabilities and improve performance for modern survey demands.
Peter Buchanan, Senior Director of Survey, Products and Services, Subsea Robotics, Oceaneering, said, “The Ocean Intervention II provides a step change in survey data acquisition productivity with the ability to simultaneously collect AUV, towed geophysical and geotechnical data. We’re excited to offer this enhanced capability to our clients.”
Some of the enhancements included:
With its enhanced configuration, the OI2 transitions between AUV and towed geophysical surveys, and geotechnical sampling, supporting efficient multi-discipline campaigns.
When paired with Oceaneering’s remotely operated USV capabilities and global Onshore Remote Operations Centers, the OI2 becomes a key enabler of fully integrated, low-risk offshore surveys. The next-gen survey approach supports faster data acquisitions, improved decision-making and increased efficiency thro8ugh simultaneous operations.
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