Application of air pomp in the laser drilling due to solve mud circulation problem in oil wells drilling industry

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Lasers have potential for rock destruction applications in mining, petroleum, tunneling, and trenching. The high temperatures induced using high power lasers cause an increase in porosity and permeability, while reducing rock strength making it easier to break-up rocks. These results are part of a more extensive research project studying the application of laser technology in the oil and gas industry. Pre-and post-lasing analysis included mineralogy determination, clay characterization and original fractures, as well as porosity, permeability, elastic moduli and strength. The characteristics of unlased rocks were compared to the characteristics of lased rocks in order to determine the effect the high temperature caused by lasers has on altering the rocks. Over 300 core samples where exposed to laser energy in laboratory settings. Rocks types lased include Berea sandstone, shaley sandstone, limestone, concrete, granite, and salt. Permeability and porosity of the reservoir rocks ranged from 0.02 to 6000 md and 2% to 23%, respectively. It was found that high temperature caused by lasers enhance porosity and permeability because high temperature vaporizes or breaks cementation leading to more pore space. On the other hand, the strength of the rock was reduced as a function of temperature. The changes are related to the thermal properties of the rocks. For example, sandstones that have a comparatively high thermal conductivity have a wide range of temperature distribution and therefore higher permeability distribution.Lasers have potential for rock destruction applications in mining, petroleum, tunneling, and trenching. The high temperatures induced using high power lasers cause an increase in porosity and permeability, while reducing rock strength making it easier to break-up rocks. These results are part of a more extensive research project studying the application of laser technology in the oil and gas industry. Pre-and post-lasing analysis included mineralogy determination, clay characterization and original fractures, as well as porosity, permeability, elastic moduli and strength. The characteristics of unlased rocks were compared to the characteristics of lased rocks in order to determine the effect the high temperature caused by lasers has on altering the rocks. Over 300 core samples where exposed to laser energy in laboratory settings. Rocks types lased include Berea sandstone, shaley sandstone, limestone, concrete, granite, and salt. Permeability and porosity of the reservoir rocks ranged from 0.02 to 6000 md ...