| Autor: |
Filippov, A. I., Zelenova, M. A., Akhmetova, O. V. |
| Předmět: |
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| Zdroj: |
Journal of Engineering Physics & Thermophysics; Jul2024, Vol. 97 Issue 4, p895-905, 11p |
| Abstrakt: |
Consideration has been given to a nonlinear problem of a filtration pressure field in a porous bed operated in a specified depression regime with a one-dimensional radial flow of a compressible medium in it. Solutions have been obtained of a problem for the zeroth and the first expansion coefficients of a nonlinear filtration pressure field, which represent the main and the first asymptotic approximations describing high-amplitude pressure fields in oil and gas beds with a weakly compressible framework. The development of the asymptotic method as applied to the problem under consideration has led to the creation of a new method of constructing analytical expressions for expansion coefficients, which coincides with the method of succession of steady states in solving the problem for the leading approximation. Based on a computational experiment, it has been shown that the pressure field in a porous bed with a weakly compressible framework is most accurately described using the method of succession of steady states, according to which pressure disturbances in the bed are absent at short times. It has been established that with increase in the distance from the well axis the disturbance delay time increases, and the velocity of the buildup of perturbations, caused by the operation of the well in a constant depression mode, decreases. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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