| Abstract:Medium and deep geothermal energy is a kind of renewable energy
with abundant reserves, wide distribution, stability and reliability. It is characterized
by green, low-carbon, clean and environmental protection, safe and high quality, sustainable and stable energy supply, and plays an important role in the
implementation path of carbon peak and carbon neutrality. Combined with an changsha
basin engineering case, this paper uses the rock press-in durometer, electric-stress
direct shear instrument and polarizing microscope to test the hardness, uniaxial
compressive strength and lithology of rock samples, The influence of rock cementing
material, mineral particles and bedding development degree on the drillability of the
strata is analyzed and studied. It establishes the drillability grade of lithology of this set of
strata, and puts forward some suggestions on the optimization of drill bit, which has certain
reference significance for drilling engineering in this area and similar areas. |
