Polycrystalline Diamond Compact (PDC)
Definition - What does Polycrystalline Diamond Compact (PDC) mean?
Polycrystalline Diamond Compact is a cutter that is fixed on drilling bits to drill oil and gas wells in shale formations. Diamond cutters are much stronger than steel cutters but are brittle and therefore they should be used in continuous formations. They are used to drill through shale, salty clay stone, concrete and sands but they must not be used in environments with gravels and sandstone.
Petropedia explains Polycrystalline Diamond Compact (PDC)
Diamond is the hardest material known by man. Due to its hardness, it is used to create polycrystalline diamond compact bits or cutters. The drill cutters mostly comprise of polycrystalline diamond grits which are fused together under high pressure and temperature on tungsten carbide substrate. The polycrystalline diamond compact has extreme hardness, wear resistance and thermal conductivity which make it an ideal drilling cutter on oil and gas wells drilling bits. In order to make the polycrystalline diamond compact bit more effective it is used in combination with an oil-based drilling fluid. Diamond cutters being brittle must be avoided in discontinuous formations.