28Jun 2017

REVIEW OF DEEP DRILLING TECHNIQUES FOR HIGH ENTHALPY GEOTHERMAL RESERVOIRS.

  • School of Petroleum Technology, Pandit Deendayal Petroleum University, Gandhinagar, Gujarat.
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Most of the supercritical geothermal systems exist at depths near or below the transition zone, where the reservoir fluid remains in the supercritical conditions i.e., at temperature above 374oC and pressure around 221 bar. Few of them have been drilled in world, which exist in Iceland, Japan, US and Mexico. Supercritical systems have gained attention in recent years by their possible direct as well as indirect utilizations. These systems are more productive then the shallow depth reservoirs because of their high enthalpy and temperature range. IDDP-1, 2 wells at Iceland are the examples of such reservoirs. Present paper does not only discuss about such type of reservoirs in the world but it also gives a brief description of technologies utilized for deep supercritical drilling of geothermal wells. It talks about the techniques like Laser drilling, Electropulse boring, Hydrothermal spallation, Millimeter wave technology etc. along with their features and restrictions. The paper also discuss about the types of equipments used for supercritical drilling in terms of bits, casing, string, drilling fluid etc.

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[Kriti Yadav and Anirbid Sircar. (2017); REVIEW OF DEEP DRILLING TECHNIQUES FOR HIGH ENTHALPY GEOTHERMAL RESERVOIRS. Int. J. of Adv. Res. 5 (Jun). 2359-2370] (ISSN 2320-5407). www.journalijar.com

Kriti Yadav
School of Petroleum Technology, Pandit Deendayal Petroleum University, Gandhinagar, Gujarat.

DOI:

Article DOI: 10.21474/IJAR01/4681      
DOI URL: https://dx.doi.org/10.21474/IJAR01/4681

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