• Ishmael Kofi Agbesi
• Aashish Kumar Kushwaha
• Adityam Dutta

From its commercial inception in the industrial world, from the mid-19th century, cable tool and rotary drilling have been the only two techniques applied in the drilling operations during the exploration phase of oil and gas discovery. Even though the rotary drilling technique has proved very successful, considerations towards applying laser technology can bring up an alternative, which can serve as the potential of replacing both the conventional drilling operations. Laser drilling is one of the most significant and positive approach in manufacturing industry. Laser drilling in the past have seen its usage mostly in high-cost manufacturing product components such as jet engines and gas turbines. This paper through its review thereby focuses on the challenges faced in laser drilling and the cost effectiveness of the available conventional drilling practices. The work compares and contrasts the technicalities of laser drilling with that of the exiting conventional drilling methods and its application in the O&G industry. The different phases have been showed in the review paper to begin a list of laser drilling methods and technologies, as well as their advantages and disadvantages. Efforts of this review paper aims at catering benefits and a companion guide for the researchers who are indulged in the implementing the utility of laser drilling in the O&G industry. This review paper is to show cost representations for better understanding the product cost in early stages of the product development.

Keywords: subsurface, laser drilling, conventional drilling, rock cuttings.

"Practical Challenges and Comparison of Laser Drilling", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 5, page no.a102-a107, May-2021, Available :http://www.jetir.org/papers/JETIR2105142.pdf

"Practical Challenges and Comparison of Laser Drilling", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 5, page no. ppa102-a107, May-2021, Available at : http://www.jetir.org/papers/JETIR2105142.pdf