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Posts Tagged ‘North Sea’

On the 50th anniversary of UK North Sea production, some thoughts from JL

Posted in energy policy, Offshore Energy - General, UK, tagged , , , , , , on June 18, 2025| Leave a Comment »

Argyll first production
Queen Elizabeth inaugurates the Forties field
Queen Elizabeth: a day of “outstanding significance in the history of the United Kingdom” and a “critical milestone in the development of our energy resources.”  

JL Daeschler recalls the inauguration of production at the Argyll field (18 June 1975) and Forties field (3 Nov 1975):

  • While some were bitter that Hamilton Brothers, a company owned by 2 brothers from Denver, was able to start production before British giant BP, there was never a race between the companies.
  • Instead there was a broad industry effort to initiate production during a financial crisis.
  • All operators exercized caution. We learned slowly with safety in mind. There was a great transfer of knowledge between operators small and big.
  • BP’s Forties field was a major achievement – designed for 400,000 bopd.  240 miles of 36″ pipeline were required (110 miles offshore and 130 miles onshore). The biggest delay was associated with the pipeline system, not the platform or wells.
  • The Hamilton Brothers Argyll field project (30,000 bopd) was not comparable in magnitude, requiring only a few wells and short infield flowlines.
  • The inauguration of Argyll  (photo above) was with the UK Energy Minister, Ferris and Fred Hamilton, and a  Greek tanker captain. There was minimal promotion and PR followup.
  • Contrast that with the Forties inauguration (photo above), a big event featuring Queen Elizabeth!

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Wind energy resource management is reminiscent of the early days of oil production

Posted in energy policy, Offshore Wind, Regulation, tagged , , , , on May 9, 2025| Leave a Comment »

Orsted photo: wind wakes trailing turbines at Vattenfall’s Horns Rev wind farm offshore Denmark

A previous post on wind theft and a recent BBC article point to the rather limited understanding that wind developers and govt land managers have about wind resource management including optimal turbine spacing and protection of correlative rights. Wind is considered a renewable energy resource, but the energy lost through inefficient operating practices is not renewable.

Given that the wake effect can extend for more than 100 km, reduce downwind energy production by >10%, and affect biological productivity, a better understanding of this phenomenon should have preceded the installation of thousands of turbines.

high density, low ultimate recovery circa 1910
modern deepwater production, few facilities, high oil recovery

Wind resource management is reminiscent of the early years of oil production when the “law of capture” reigned supreme and wasteful production practices were a self-defense mechanism.

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Bits of Scottish common sense

Posted in energy policy, Offshore Energy - General, UK, tagged , , , , on March 27, 2025| Leave a Comment »

Scotsman letter

Industry sources tell us, authoritatively, that the North Sea could produce around half of all the oil and gas the UK will need up until at least 2050 – if new projects are developed. Meanwhile, as instead we shut down our existing wealth, China continues burning dirty coal and making us more dependent on their products.

As it stands, Offshore Energies UK (OEUK) says the UK is on track to produce just four billion of the 13-15bn barrels of oil and gas the country will need over the next 25 years.

It is time for those making decisions in London and Edinburgh to put away all the green zealotry nonsense and get the UK powerhouse moving again. Given 25 years they could make a good start on installing small, clean, nuclear plants dotted across the UK to help in great part to pick up the load.

We need planning, not zealotry. It is now even more clear the green emperor is not wearing clothes. When will Energy Secretary David Miliband be convinced?

Alexander Mckay

Edinburgh

And from an offshore worker @Deano9981:

As someone who actually works in the North Sea on oil rigs I have heard almost all my life how the oil and gas will be gone in 10 years. 35 years in this industry and the first time I am likely to be unemployed is because of the government. Not the end of oil fields.

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Carbon disposal moving forward in the North Sea, stalled (hopefully forever) in the GoM

Posted in CCS, climate, Gulf of Mexico, UK, tagged , , , , , on December 16, 2024| Leave a Comment »

Northern Endurance Partnership (bp, Equinor, and Total) has been awarded the UK’s first permit to “store” CO2 beneath the North Sea. NEP plans to begin construction in the middle of 2025 with start-up expected in 2028 (bet the over!). Climate solution or costly virtue signaling at the public’s expense?

Fortunately, from the standpoint of US consumers and taxpayers, the push for carbon disposal in the Federal waters of the Gulf of Mexico has stalled, perhaps permanently. Oct.1 marked the 2 year anniversary of the 94 leases improperly acquired by Exxon at Sale 257 for carbon disposal purposes. Those leases will expire in 33 months (with the remaining 105 rogue leases expiring 1-2 years later) barring another legislative maneuver by industry advocates.

All of the previously posted questions about carbon disposal in the Gulf of Mexico remain, and most apply elsewhere. In particular, detailed cost-benefit analyses and risk assessments for these projects have not been provided. The intended permanency of offshore, subsurface carbon disposal raises complex monitoring, maintenance, liability, and decommissioning issues.

What are the carbon disposal proponents selling and why should governments be buying? If CO2 emissions are a significant threat to society (and informed opinions differ), is carbon disposal a cost effective solution? Policy decisions on subsidies for carbon disposal will be a good indication of how serious the new administration is about cutting Federal spending.

199 GoM oil and gas leases were wrongfully acquired for carbon disposal purposes. At Sale 261, Repsol acquired 36 nearshore Texas tracts in the Mustang Island and Matagorda Island areas (red blocks at the western end of the map above). Exxon had acquired 163 nearshore Texas tracts (blue in map above) at Sales 257 (94) and 259 (69).

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North Sea shutout – no bids for Danish wind leases

Posted in energy policy, Offshore Energy - General, Offshore Wind, tagged , , , , on December 6, 2024| Leave a Comment »

No bids for the 3 large North Sea tracts (yellow) west of Denmark.

Danish Energy Agency: “The deadline for bidding on the first 3 GW of Denmark’s 6 GW offshore wind tendering procedure expired on Thursday. The Danish Energy Agency has not received bids for any of the three offshore wind farms in the North Sea put out to tender. The Minister for Climate, Energy, and Utilities has asked The Danish Energy Agency to engage in dialogue with the market to identify why no bids have been submitted.“

Even Orsted, which is 50.1% Danish govt owned, failed to submit a bid. Perhaps the economic realities of offshore wind, as reflected in Orsted’s share price (below) are sinking in.

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Hywind turbine maintenance completed; Equinor declares victory. California time frame?

Posted in California, Norway, Offshore Wind, UK, tagged , , , , , , on October 22, 2024| Leave a Comment »

Hywind Scotland, Equinor

Equinor reports that all 5 Hywind turbines have been returned to service after being towed to Norway as part of a 4-month maintenance campaign.

Even though the turbines had only been in operation since 2017, Equinor puts a positive spin on the 4-month maintenance outage, declaring total victory:

“The successful completion of the maintenance campaign on Hywind Scotland is a testament to the collaborative efforts of our teams and partners. As the world’s first floating offshore wind farm, Hywind Scotland has demonstrated the immense potential of floating wind. Through this maintenance campaign, we’ve gained valuable insights that will help us refine maintenance practices and optimise this technology for the future. By sharing our learnings, we aim to contribute to the growth and development of the floating wind industry.”

Some of the folks in Scotland have a different take as evidenced in this video:

Meanwhile, the turbines planned for offshore Central California will also have to be towed to shore for major maintenance. Nearby harbor areas like Morro Bay (pictured below) would be overwhelmed by the large structures and the maintenance and repair operations. Central Coast residents are not enamored with “another attempt to industrialize the coast.” Towing the towers to LA/Long Beach, albeit rather distant from the leases, would seem to be the preferred option for such work.

Looking forward, the first power generation from floating wind turbines on the Central Coast is forecast for 2034. Betters may want to take the over!

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Safety standards, regulations, management, and culture: continuous improvement is the essential common denominator

Posted in accidents, Offshore Energy - General, UK, well control incidents, tagged , , , , , , , on May 9, 2024| Leave a Comment »

JL Daeschler, pioneering subsea engineer and BOE contributor, recounted a frightening incident in 1976, a year after UK North Sea production began:

We found ourselves in a drastic situation. While working on a subsea well, the wireline retrievable tubing safety valve got tangled up in the tree area. We had an open well situation and couldn’t cut the wire in the subsea tree. Further, the weather was bad, and keeping on location was difficult. The riser hydraulic release was faulty, so there was an imminent high risk of a “jammed ” subsea tree, bent/damaged riser, and uncontrollable well flow.

We got through this, but recognized that improved well control capabilities were needed during workover operations. Management decided that any future workover operations on a subsea tree/well would require a small diameter workover BOP with shearing capability immediately above the Xmas tree. A year later, we had the hybrid kit pictured below (with JL). Note that the guide funnels are slim to run on guide lines and not overshoot the guide base posts.

JL’s story reminds us once again that safety achievement is dependent on continuous improvement driven by experience, research, and technological advances.

When I was a young engineer with the US Geological Survey, the OCS safety regulator at the time, my boss and mentor Richard Krahl (known as “Mr. OCS” for his commitment to offshore safety) slammed😀 a copy of the first edition of API RP 14C (Analysis, Design, Installation, and Testing of Safety Systems for Offshore Production Facilities) on my desk and told me to read it carefully. That pioneering process safety document has grown with the offshore industry and is now in its 8th edition.

Similarly, API RP 2A-WSD (Planning, Designing, and Constructing Fixed Offshore Platforms— Working Stress Design) is now in its 22nd edition and API STD 53 (Well Control Equipment Systems for Drilling Wells) is in its 5th edition. There are countless other examples of the progression in safety equipment and practices.

As individuals, companies, agencies, and collectively as an industry, there can be no standing still. Nothing is routine and the challenges continue to grow: deeper wells, more complex geology, higher temperature and pressure, deeper water, harsher environments, remote locations, new security risks, and more. We get better or we get worse, and the latter is not an option. Onward!

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Norway continues to be a leader in assessing offshore safety risks

Posted in accidents, Norway, Offshore Energy - General, tagged , , , , , on April 18, 2024| Leave a Comment »

PSA Norway, now Havtil, has long been a pacesetter in analyzing offshore incident and performance data, and publishing timely, comprehensive assessments. Their key findings for 2023 are pasted below (emphasis added):

  • Hydrocarbon leaks: four on the NCS in 2023 – the lowest figure since the RNNP survey began. None of them are considered particularly serious.
  • Well control incidents: 11 in 2023. The level is stable, with the figure unchanged from 2022, and all had a low potential.
  • Structural damage: three incidents were reported in 2023, a halving from the year before.
  • Total major accident indicator: the annual value is the lowest ever, and the average for the past three years declined. No particularly serious incidents occurred in 2023.
  • Personal injuries: no accidents resulting in fatalities occurred in the petroleum sector during 2023, while 25 serious personal injuries were reported. The serious injury frequency rose to 0.6 per million hours worked (back to the 2021 level), and lay within the expected range based on the 10 previous years.
  • Questionnaire survey: responses to this biennial poll showed an improvement from 2021 in most of the indices for the HSE climate and the psychosocial working environment. Furthermore, some challenges are seen with regard to language and parallel operations leading to hazardous conditions.

Havtil informs me that the complete “Trends in Risk Level (RNNP)” report for 2023 will be available in English later this month. A link to the report will be posted on this blog.

On a related note, JL Daeschler has brought The Norwegian Oil Pioneer Club’s website to my attention. Those interested in the history of North Sea exploration and production should take a look! A couple of pictures from the site are pasted below.

Svein and Axel, North Sea pioneers, 1966
Sinking of the Ocean Prince, 1968

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Offshore art and history courtesy of JL Daeschler

Posted in Gulf of Mexico, Norway, Offshore Energy - General, UK, Uncategorized, tagged , , , , on April 16, 2024| Leave a Comment »

JL Daeschler is a pioneering subsea engineer and artist extraordinaire who is a native of France (Brittany) and lives in Scotland. He has shared 2 more of his exceptional drawings. (Click on the images to enlarge.)

This is a drawing of the Ocean Viking (Odeco) in the Norwegian North Sea in 1968. The rig was built in Oslo as a sister ship to the Ocean Traveler, which was already working at the same location. The Ekofisk field was discovered later in 1969.
The mast-type derrick could be lowered for long ocean tow or bridge clearance. It would have been difficult to evacuate a 100 + personnel to the standby vessel, a decommissioned trawler. Things have changed so much in 56 years!
Inclined jack up legs with rack and pinion drive ( Marathon Le Tourneau), Gulf of Mexico

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Fatality while training to save offshore workers

Posted in accidents, Norway, offshore, tagged , , , , , , on February 29, 2024| Leave a Comment »

“The Sikorsky S-92 helicopter is the most advanced aircraft in Sikorsky’s civil product line, certified to the most stringent safety requirements of the Federal Aviation Administration (FAA) and the European Aviation Safety Agency (EASA).” 

One person has died following the helicopter crash outside Bergen in Norway on the night of Wednesday 28th February. The helicopter was on a training assignment for Equinor ’s SAR service for the Oseberg area in the North Sea.

Equinor

Search and rescue service is critical to offshore safety, and North Sea operators have excellent SAR capabilities. Sadly, one person died and five were injured (two seriously) when a Sikorsky S-92 helicopter, owned by Bristow and under contract to Equinor, crashed offshore Bergen last night. The crew was training to serve offshore workers in need.

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