The whole point is that microwave ablation of these materials does not require drilling mud and is self-stabilizing by the pressures and molten material generated, while also sealing the bore hole and preventing quite a lot of water table, H2S, etc contamination. In theory it should allow substantially deeper boreholes.
The technology is real, and the required power density is surprisingly low.
https://www.researchgate.net/publication/286571247_Penetrati...