Kalugina N.A.,Sapegin V. N. Nature of pressure change in few pressurized working agent at his dumping from bore hole

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Parent Category: Geo-Technical Mechanics, 2015

Category: Geo-Technical Mechanics, 2015, Issue 125

Geoteh. meh. 2015, 125, 159-169

NATURE OF PRESSURE CHANGE IN FEW PRESSURIZED WORKING AGENT AT HIS DUMPING FROM BORE HOLE

¹Kalugina N.A., ²Sapegin V. N.
¹IFGP NAS of Ukraine, ²IGTM NAS of Ukraine

UDC 622.831.3:622.241.54

Abstract. The possibility of using a variety of agents working for the initiation of gas from gasbearing environment. It is shown that promising agents are working uniform water and gas, in which the high speed of sound. Gases and gas-liquid mixture at a low speed of sound in them, and high compressibility unpromising as to create a pressure relief of the wells in such environments greater rate of pressure change is not possible. The analysis showed that the universal working agents that are effective in a variety of geological conditions there. It is shown that the rate of change of well pressure determined mainly the speed of propagation of disturbances in the working agent pressure value of working fluid before it is released and a length of the well. The main parameter determining the magnitude of the maximum tensile stress in the gas-bearing medium is the time of the pressure drop in the operating agent. Get one for a little compressed working fluid by the method of traveling wave analyzes pressure changes depending on the time and rate of change of the pressure relief wells. From the analysis of the theoretical patterns of change in the radial tensile stress is followed by a variety of options for managing the process of initiating the destruction of gas-bearing environment.
Keywords: Keywords: pressure change rate of tensile stress, work agent borehole collapse.

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 About the authors:

Kalugina Nadezhda Aleksandrovna, Candidate of Technical Sciences (Ph.D), Senior Researcher, Scientific secretary of the Institute of Physics of mining processes NAS of Ukraine, Dnepropetrovsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Sapegin Vladimir Nikolayevich, Candidate of Technical Sciences (Ph.D), Researcher, Department of problems of mining at greater depths, N.S. Polyakov Institute of Geotechnical Mechanicsof the National Academy of Sciences of Ukraine (IGTM NASU), Dnipropetrovsk, Urraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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