**5. Conclusions and future direction**

In short, ultra-strong and catalyst-free PDC cutting materials have been successfully synthesized through innovative UHPHT technologies. These new CFPCD materials set new industry records in the diamond family for hardness, toughness, abrasion resistance, and thermal stability. Using these unique properties of the new CFPCD material as a combination of PDC cutters in drill bits, can help achieve the goal of "one run to TD" game-changing drilling techniques. Future research directions (**Figure 13**) continue to explore much higher pressures and higher temperatures domains and produce larger size UHPHT CFPCD cutting materials in preparation for further breakthroughs in drilling technology.

#### **Figure 12.**

*High-temperature in-situ XRD spectra of (a) a commercial PDC material, and (b) a 16-GPa UHPHT CFPCD material at temperatures up to 1400°C [14].*

*Applications of Polycrystalline Diamond (PCD) Materials in Oil and Gas Industry DOI: http://dx.doi.org/10.5772/intechopen.107355*

**Figure 13.**

*Future research directions for ultra-high pressure and ultra-high temperature [18].*
