Dang you e got yourself in a pickle with that one. 🫣
Welcome to the forums.

Drilling out is your best bet.
Use a punch tool for the drill bit to start and use a small bit working it to a larger bit so you can get an extractor to fit properly for removal.

Sounds like fun. 😣
Good luck. 🤞

 

Thats what i tried to do. I went well untill the tool broke inside the hole..

 

I don't know if it's possible to drill out the extractor, since the extractor is hardened tool steel.
If you used a well under size extractor, then you might drill around the broken off extractor with a small drill bit.
The sure fire method I know, is using a gadget that electrically burns away at the Brocken off extractor in its hole.
Sorry, but I don't know it's name.
You would also have to mind the safety of the computer, since the tool creates an arc like in welding.
How do I know ? Been there, have Brocken them off.
Always try to use the largest extractor, the to be extracting bolt will permit. Extractor break, because they are hardened. Same as tread tap.
I don't envie you.

 

Bieng able to drill it out if what i was worried about.. Im also worried about the drill bieng pushed outwards and into the oil well..
Wouldnt burning it away be problematic due to the low melting point of aluminium.

I was hoping somebody would say i should just use go with the 2 remaining bolts...

I feel like my last resorts are to use a dremmel and try to get the broken piece out. Then re- threading the hole to M10.
Or use a **** ton of chemical metal and glue it in place

 

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Or use a **** ton of chemical metal and glue it in place
[/QUOTE]

😊 Now Now, don't get carried away and discouraged 😁

A Dremel tool with a suitable head , might be successful .
You could also enquire about the length of the Brocken of bolt. That would give you an idea about how deep you can dig with your tool.

Burning it away should not be a problem. It has to be done very slow, with a electrode that does not melt. Aluminum disipates heat well.
The burning tool is a small apparatus, wish I could remember it's name.

 

You need to get a torch on it and turn it bright red and quench with water. Now you can bust it out of there. It's the best way to fix these.

 

I got curious and googled:
How to remove Brocken off tap

Have a look at:
Practicalmachinist.com/6-effective-ways-to-remove-broken-taps/

The numerous comments after the video have a lot of info from practicing people