Thread: hot rocks

Originally Posted by Steve Fryar

Geodynamics are nearing 5000m on Jolokia#1 near Innaminka.The bottom 1500m is fractured granite containing water super heated to near 500 degrees F.We are hoping to log 200m of the well before the electronics in our tools melt.The expected surface pressure at the wellhead is 5200 psi.Geothermal energy is very big at the moment.And yes,I have bought shares.
Cheers, Steve

Great work! this is the future, where do we subscribe for shares?

Have a look at their website. www.geodynamics.com.au. The rig they have is the biggest onshore rig in the southern hemisphere.It is huge.

I am very interested in seeing how this industry develops, given that it is still a quite new industry, with technological advances in efficiency and output over the next decade or two, it looks like a very promising alternative source of energy

Geothermal energy,in my opinion,will be the way of the future.We have the hottest "hot rocks" on the planet.It's very simple.A closed loop system.Steam comes out of the hole at 5000psi,runs a generator,makes power,steam condenses to water,water is injected into an injection well,gets hot,and so on.Australia cannot rely on its oil and gas.I am in the front of the industry with a geophysical logging company.Simple fact is...we are running out.Yet over a large part of Australia,geothermal energy is available.We can lead,and do,the world on super-heated,high pressure geothermal energy.

Originally Posted by Steve Fryar

Geodynamics are nearing 5000m on Jolokia#1 near Innaminka.The bottom 1500m is fractured granite containing water super heated to near 500 degrees F.We are hoping to log 200m of the well before the electronics in our tools melt.The expected surface pressure at the wellhead is 5200 psi.Geothermal energy is very big at the moment.And yes,I have bought shares.
Cheers, Steve

If you've got drilling mud in the hole and you get your logging tools in the hole as soon as possible after end of last circulation you might have a chance. Are they using a heat exchanger as part of the mud system while drilling? Was any wireline logging down on the early Geodynamics well?

What tools are you planning to run?

I've sat many Moomba wells where BHT got to around 320 deg F and we got away with logging jobs. Our main problems were with tools that had seals or hydraulics.

Has anyone considered using LWD tools to acquire the logs? At least with an LWD tool string you can circulate while youre logging and get BHT down a bit. If you use tools that are turbine rather than battery powered then the problem of high temps shortening battery life wont be an issue.

Cheers Martin (Wellsite Geologist)

Originally Posted by Sebastiaan56

Great work! this is the future, where do we subscribe for shares?

Geodynamics have been listed on ASX for some time now. Stock code is GDY. They're trading around $1.40 mark at the moment.

Before rushing into buying the shares consider the following:

1. GDY will not be turning a profit for many years. Any financial gain you make will be through an increase in the capital value of the stock (ie no dividends). HDR is a high risk stock compared to other energy stocks.
2. Of all the hot rock operators GDY is the most advanced with open loop testing in progress on their Habanero project and closed loop testing due to start some time soon once required components arrive from overseas.
3. While GDY is going well with its project so far they are a long way from a big market for the power a commercial plant would produce. To get power to the nearest big market will require transmission lines. and associated costs (and energy loss). Other operators are planning projects that are closer to markets for their geothermal power.
4. Consider buying stocks in the wireline logging company Steve works for. If his tools get cooked in the GDY well then GDY will most likely end up paying for them. The last time I saw a wireline tool string destroyed down a well the bill came to about $1m. Its a win-win situation for the wireline logging boys

Cheers Martin (Geologist).

G'day Martin.The tool we're running is our CBIL.They are only interested in getting info on the fractures.And your right the do pay for damage to tools and to wireline for that matter.I realise the shares are a long term prospect but I believe this to be a big part of my kids future.
Steve.
Baker Atlas, Moomba.

The CBIL is a sonic imager right? An equivalent to Schlum's MSIP sonic scanner?

Most of the new generation sonic tools Ive run of late need to run at about 900ft/hr to get a decent log when recording full waveforms. I assume the tool has a mode where it does alot of the processing downhole? This usually means you can run it at a slightly higher logging speed.

If that holes as hot as you say it is then Id say youve got about a 1% chance of getting that tool out of there before it cooks. Good luck.

Let me know how it goes (PM me if you like)...Im always interested in seeing how tools perform when pushed beyond their published specs.

Cheers Martin

You're spot on Martin,it is a sonic imaging tool but with no special modes.It logs at around the 900 ft/hr.And I think you're chances of us getting it out intact are optimistic.This is their forth hole and we have cooked every other tool.We log till they die.Drives the lab rats crazy.They have to fix them.We do however fill the tools with RTV tool delay the affects of the heat.