Traditional rotary drilling methods for crude oil and natural gas extraction pose significant
challenges and costs. To address these challenges and reduce drilling expenses, oil …

Mechanical drilling is facing increasing challenges in exploiting energy stored in deep and
hard formations. Laser irradiation has emerged as a novel drilling method with a large …

Perforation will damage the cement sheath around the hole in petroleum engineering,
leading to the failure of cement sealing integrity during hydraulic fracturing. This work …

A new laser irradiation fracturing method is employed to crack the Hot Dry Rock (HDR) and
variations of rock temperature, specific energy (SE) and modified specific energy (MSE) …

High-power laser has been considered as a potential method of rock breakage through
melting. However, high energy consumption and low efficiency are the main restrictions for …

High power density laser was applied during rock breaking for sandstone with different laser
parameters. The fracture morphologies and quantitative characterization as well as the …

Numerical simulation and experimental tests are conducted to determine the stress
distribution and fragment mechanism of granite during laser perforation. The mechanisms of …

Abstract Based on Box–Behnken Design of response surface methodology, multiple
experiments of laser drilling (four centimeters thickness of sandstone) were performed by …

Combined laser–mechanical rock breaking drilling is an emerging technology that uses
laser-assisted mechanical rock breaking to efficiently drill wells. A physical model of …

This paper reports the experimental investigation of the modified specific energy,
mechanical properties and temperature field of limestone rock that was irradiated by …