Mykhailovska, O. V. (2022) METHOD OF CALCULATING THE STRESS-STRAIN STATE OF THE DEPTH WELL AND AREA AROUND THE WELL. UNIVERSITAS Publishing. с. 637-669.

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English abstract

A mathematical model was used to solve the problem of estimating the stressstrain state of an array near a vertical well of great depth. The model includes equations of equilibrium, dependences between components of deformations and components of displacements, equations of properties of the environment, intensity of stresses and intensity of deformations, and also boundary conditions. To derive the calculated dependences, an elementary cylinder with a hole is considered. Cylinder of constant radius. The elementary cylinder of constant thickness is loaded with internal and external pressure. It is determined that for operative decision-making related to various problems arising in the process of construction of deep wells (oil, gas, etc.), their operation, as well as in their design, very relevant analytical studies based on the use of engineering method assessment of the stress-strain state of the deep wellbore. It is determined that the results of the application of the proposed method are the rapid assessment of the stress state of the rocks of the shaft, near the wellbore and in the array. The result is a qualitative assessment of the possible distortion of the productivity of the formations before their tests and scientific substantiation of the parameters of the technological process that prevent possible complications in the drilling of deep wells. Recommendations for the use of this method are given

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