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Superhot geothermal is exciting because of the unlimited potential, universal availability, Star Wars drilling technology, and the dynamics of supercritical fluids.

There are still hurdles to clear, and commercial power generation is 5+ years away, but the promise is tantalizing.

Gyroton millimeter wave drilling technology

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Excerpt from the Quaise video:

As we descend into hotter, deeper tiers, the process shifts from pressure-driven to density-driven stimulation. With larger density contrasts between the injected water and pore fluid in the rocks, density takes the lead. The deeper we go, fracturing becomes easier, not more challenging, and reduces the need for massive pumping fleets.

It all results in a superhot subterranean network sweeping away 10-100x more heat than all other forms of geothermal. We are sending water coursing through engineered permeability, harnessing Earth’s most abundant energy and powering the next century of global innovation.

Supercritical fluid dynamics are thus the key to superhot geothermal completions. Water above 374C374 raised to the composed with power C and 22 mega pascals (3191 psi) enters a supercritical state with liquid-like density and gas-like viscosity. The water that is injected into a hot, supercritical reservoir is thus much denser than the surrounding superhot fluid. The injection of relatively cool water into superhot rock creates and widens fractures increasing permeability without increased pumping pressure.

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In light of the fantastic Middle East news, planning for the redevelopment of Gaza is underway. The Gaza Marine Gas Field should be a high priority given the power generation and revenue potential.

The field, which was discovered in 1999 by British Gas (now part of Shell), is located approximately 30-36 km off the coast of Gaza in the eastern Mediterranean and has estimated natural gas reserves of ~ 1 Tcf.

Who should be licensed to develop the field? In June 2023, there was a proposed agreement between the Palestinian Authority and an Egyptian consortium led by state-owned Egyptian Natural Gas Holding Company (EGAS). A resurrection of this arrangement may align with Palestinian interests. EGAS has experience in Mediterranean gas projects including the giant Zohr field (see map below).

Other candidates for developing the Gaza Marine field (pure speculation):

  • Chevron would be a logical choice given their extensive eastern Mediterranean experience as a result of their acquisition of Noble Energy. However, there might be concerns about undue US and Israeli control of this important resource.
  • Regional giants like Saudi Aramco, Qatar Energy, and Abu Dhabi National Oil Company (ADNOC) would be good candidates.
  • Another interesting possibility might be Equinor, which is 2/3 owned by the Norwegian govt. Equinor seems to sometimes make socially desirable investments that are less profitable.

Some combination of the above companies might also be a possibility. In any event, it’s critical to manage this resource in a manner that best benefits the recovery effort.

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EIA: Per capita CO2 emissions from primary energy consumption decreased in every state from 2005 to 2023, according to recently released data in our State Energy Data SystemTotal energy-related CO2 emissions in the United States fell 20% over that time, and the population grew by 14%, leading to a 30% decrease in per capita CO2 emissions.

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A short Quaise video (below) describes how conventional and millimeter wave drilling can be combined to reach superhot geothermal energy sources.

Keep in mind that superhot (300-500 deg. C) energy can be reached with conventional drilling at sites with high geothermal gradients. These “tier 1” sites will be the first targets (second video below).

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Two of Israel’s three offshore gas fields are shut-in as a precaution. As a result, exports to Egypt and Jordan has been curtailed. The Tamar field continues to supply Israel’s gas needs.

Summary table:

field
(operator)
2024 production
(billion cubic meters)
(% of Israel’s total)
status
Leviathan
(Chevron)
11.33
45%
shut-in
Tamar
(Energean)
10.09
37%
producing
Karish
(Chevron)
5.96
18%
shut-in

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Iranian media reports a “massive explosion” following an Israeli drone strike on the South Pars gas field in the southern port city of Kangan. According to a 2019 report, the field accounts for 74 per cent of the country’s gas production.

Judging by available video (below), it appears that onshore processing facilities were struck and not the offshore infrastructure.

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Recently, Quaise Energy showcased millimeter wave drilling on a full-scale Nabors rig, and moved one step closer to superhot geothermal power production.

This is the first-ever hybrid drilling rig, combining conventional and millimeter wave capabilities.

Quaise plans to drill superhot geothermal wells that can generate abundant baseload power in record time. They believe there is no other energy solution capable of the same scale and speed.

Excellent New Atlas article

“The cube sends electomagnetic energy to the drill bit to melt rock – New Atlas photo
Core showing vitrified granite/basalt walls of the borehole – New Atlas photo

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Good video:

More on Quaise Energy

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While a graduate student more than 50 years ago, I wrote a paper entitled “The Use of Natural Gas in Improving Air Quality.”  My professor, Dr. Richard Gordon (RIP), a terrific economist who greatly influenced my thinking about energy, liked the paper but thought I was too optimistic about the availability of gas. 

The sense at the time was that natural gas was a premium energy source in short supply. I was blissfully ignorant and thought we geologists and petroleum engineers would find and produce the gas. The Shale Boom, for which I can take zero credit, has proven me correct, so I’m taking another victory lap. 😀

Last week, the great Dan Yergin and his team at S&P Global issued a report that explains how economically and environmentally important natural gas has become. Key findings from the report are pasted below:

Environmental Benefits:

  • Higher US LNG exports lead to lower overall global emissions by displacing the more GHG intensive fuels that would replace them.
  • End use combustion is responsible for 57–87% of GHG intensity for coal, oil, gas and LNG, with supply chain methane emissions the key driver of variation between fuels (e.g., domestic vs. international LNG, domestic versus piped natural gas imports, or different crude oil streams).
  • Coal emits roughly 70% more greenhouse gases than the US LNG it would replace across all the alternatives analyzed.

Economic Benefits:

  • US LNG’s unprecedented growth is enabled by an extended cross-state value chain, that reaches beyond the core-producing states – about 90% of every dollar spent remains within United States supply chains
  • Of the annual average of 495,000 US jobs supported through 2040, 37% will be in non-producing states. As many jobs will be supported in on-producing states as in Texas
  • Over the same period, LNG Exports will contribute $1.3 trillion in GDP, with $383 billion or 30% in non-producing states. On a per capita basis, producing states benefit from a cumulative $13.2K GDP per capita
  • The US Northeast (NE) has vast amounts of low-cost gas reserves in the Marcellus and Utica formations (New York, Pennsylvania, West Virginia, Ohio), sufficient to meet nationwide demand for ~17 years
  • Due to pipeline constraints these reserves are being developed at a suboptimal rate, pushing gas prices at Boston, Chicago and New York City Gates up 160% higher than the national gas market in peak months
  • Expanding NE pipeline capacity by 6.1 Bcf/d could reduce HH gas prices by $0.20/MMBtu and significantly lower prices across the region. Cumulative nationwide consumer savings could reach $76 billion through 2040

Should you be interested in learning more, the above findings are well supported by detailed information in the report.

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