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Archive for the ‘drilling’ Category

Foremost energy experts like Daniel Yergin understand that oil and gas will be critical to our economy and security for decades, and that offshore production is an important component of our energy supply chain. Unfortunately, our massive outer continental shelf has, from an oil and gas standpoint, been effectively reduced to the central and western GoM.

Opportunities in the GoM are being seriously constrained by the extended pause in leasing. A lease sale has not been held for 615 days, the longest US offshore leasing gap since the 1950’s.

Reserve replacement and sustained production are dependent on exploration. The charts below illustrate the decline in GoM exploratory drilling and the reduced activity by some of the more important operating companies.

Per BSEE data, the number of exploratory well starts averaged only 3/month for the last 18 months (chart 2). This level of activity is the lowest since the early days of deepwater operations (chart 1). There was even more drilling during the post-Macondo moratorium (2010-2011).

ConocoPhillips and Exxon have not drilled a GoM exploratory well since 2016 and 2018 respectively. Activity by other operators has also declined significantly (chart 3). BP has not spudded an exploratory well since Sept. 2021.

No one should be surprised by the sharp decline in reserves and the dearth of recent field discoveries. Hopefully, government and industry will engage in a more thorough discussion of these trends and measures that might improve the intermediate and longer term production outlook.

chart 1
chart 2
chart 3

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MIT Press

For others who are fascinated by ultradeep geothermal energy, MIT News has posted an update on Quaise Energy. Quaise wants to use x-rays to drill ultradeep geothermal wells at old coal and gas power plants.

“The company plans to vaporize enough rock to create the world’s deepest holes and harvest geothermal energy at a scale that could satisfy human energy consumption for millions of years. They haven’t yet solved all the related engineering challenges, but Quaise’s founders have set an ambitious timeline to begin harvesting energy from a pilot well by 2026.”

Quaise will use conventional rotary drilling technology to reach basement formations before switching to high-power millimeter waves that vaporize boreholes through rock and provide access to deep geothermal heat. See our previous post on this exciting concept.

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Glomar Challenger Scientific Drilling Vessel, 1968-1983

I recently learned about the passing of yet another former colleague <sigh>. This has become an all too frequent occurrence. Here is a link to Jim Galloway’s fascinating and informative obituary, which even includes some geology humor 😀

“While attending USC, Jim met his future wife and love of his life, Sarah Ann Mason, a fellow geology student. It was crystal clear from the moment he met her in the Mineralogy lab, Sarah was a gem and despite all his faults he wouldn’t take her for granite.“

After high school, Jim worked as a cook on the Glomar Challenger scientific drilling vessel, which no doubt inspired him to study geology. As part of the Deep Sea Drilling Program, the Challenger recovered cores that provided conclusive evidence of plate tectonics, which until that time was just a theory. From 1968 to 1983, the Challenger recovered over 19,000 cores in water depths up to 7044 m!

Jim became a leading expert on oil and gas resources offshore California, which were once (and still should be) considered nationally important. Much respect for his many contributions to our understanding of Pacific geology!

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A full EIS is needed!

Further to the summary from the 2016 EA announcement, it appears that the only Pacific Region well operations over the past 2 years have been for plugging and abandonment purposes. The legal circus continues with or without actual operations.

There have been 24 well stimulation treatments (21 of which involved hydraulic fracturing) on the OCS offshore California between 1982 and 2014, and these were conducted on four of the 23 platforms. Reservoirs on the OCS off Southern California tend to be much more permeable than onshore reservoirs, and are already highly naturally fractured. Therefore, little permeability enhancement has been required for their development. As described in the scenario evaluated in the EA, the future use of Well Stimulation Treatments is expected to continue to be occasional rather than essential to hydrocarbon production from these platforms.

BOEM, 2016

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Alpine drill site, CP photo

In March, a gas release incident occurred while drilling a disposal well in the Alpine field on the North Slope of Alaska. While there were no injuries or environmental impacts, the investigation and findings will help minimize well construction risks during future operations. The report is attached.

Some comments:

  1. I like the way the report, related information, and all situation reports were posted in a timely manner on the Alaska Oil and Gas Conservation Commission (AOGCC) homepage. It’s refreshing that the AOGCC homepage is 100% substantive and completely devoid of the spin and propaganda you find on most government and corporate websites. (For comparison purposes, check out the Department of Energy and Department of the Interior homepages.)
  2. The ConocoPhillips (CP) incident report is concise, logically organized, and clearly written.
  3. The findings are consistent with the data, and the supporting figures are legible and understandable.
  4. Instead of blaming the crew or using the “human error” cop out for the leak-off test execution and subsequent monitoring issues, the report rightfully attributes those failures to company procedures and communications. This reflects well on CP’s understanding of the human and organizational factors that contribute to safety performance, and CP/AOGCC efforts to foster a strong safety culture. (Remember the shameful prosecution of well site leaders Bob Kaluza and Don Vidrine following the Macondo blowout.)

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Through her research of Pennsylvania’s Marcellus Shale play, Lee found that highly concentrated lithium was found in the produced water (water produced as a byproduct during the extraction of oil and natural gas) along with produced natural gas and oil.

“We found lithium in the petroleum-based rock brines, which opens new pathways to address the shale plays as a substantial source of lithium, given that they are ubiquitous in the U.S.,” Lee said.

University of Houston

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