EFFICIENCY OF DRILLING WELLS WITH AIR PURGE BASED ON THE USE OF A VORTEX TUBE
Toshov J.B. Sherov K.T. Absadykov B.N. Djuraev R.U. Sikhimbayev M.R.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#4Issue 460225 - 235 pp.
The practice of drilling has proven that the use of compressed air as a cleaning agent provides a significant increase in ROP (mechanical drilling speed) and reduces the time spent on eliminating geological complications, which sharply increases the productivity and economy of drilling operations. However, air has a low heat capacity compared to liquid solutions; this affects the operation of the rock cutting tool due to high contact temperatures with irreversible consequences. To prevent these problems, there is a need to develop technical means and technology to effectively ensure the temperature regime of the rock-cutting tool. This article discusses the possibility of normalizing and regulating the temperature regime of the rock-cutting tool due to forced cooling of the cleaning air at the bottom hole to negative temperatures, and a new design of the drilling projectile for drilling with air purging is developed. With a drill string rotation frequency of 69 rpm, the ROP is already 2.76 m/h, and at a rotation frequency of 300 rpm it reaches 7.6 m/h. With an increase in the rotational speed of the drill string, an increase in mechanical speed is observed. Thus, depending on the drilling modes, the penetration rate due to the use of clean air cooled to negative temperatures increases by an average of 6-7%. Reduce the temperature of the rock cutting tool at the bottom by an average of 50–60 °C.
air purging , bottom hole , compressor , drill string , drilling , flushing fluid , Rank effect , temperature mode , vortex tube , well
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Tashkent state technical university named after Islam Karimov, Tashkent, Uzbekistan
Kazakh Agrotechnical Research University named after S. Seifullin, Kazakhstan
Satbayev University, Almaty, Kazakhstan
Navoi State University of Mining and Technology, Navoi, Uzbekistan
Karaganda Economic University of Kazpotrebsoyuz, Karaganda, Kazakhstan
Tashkent state technical university named after Islam Karimov
Kazakh Agrotechnical Research University named after S. Seifullin
Satbayev University
Navoi State University of Mining and Technology
Karaganda Economic University of Kazpotrebsoyuz
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