Studying the dependencies between the sandstone physical and mechanical properties and the elastic wave velocity
The engineering of hydrocarbon field development requires a detailed estimate of the oil and gas reserves and their production. In order to estimate the size of hydrocarbon reserves, the first engineering stage includes a reservoir characterization. The second stage is a hydrodynamic simulation. One...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Perm National Research Polytechnic University
2020-03-01
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| Series: | Perm Journal of Petroleum and Mining Engineering |
| Subjects: | |
| Online Access: | http://vestnik.pstu.ru/get/_res/fs/file2.pdf/9143/Studying+the+dependencies+between+the+sandstone+physical+and+mechanical+properties+and+the+elastic+wave+velocityfile2.pdf |
| Summary: | The engineering of hydrocarbon field development requires a detailed estimate of the oil and gas reserves and their production. In order to estimate the size of hydrocarbon reserves, the first engineering stage includes a reservoir characterization. The second stage is a hydrodynamic simulation. One of its objectives is to study filtration processes that depend on many factors. A correct description of these factors will ensure accurate calculations of the main development parameters. The filtration processes are closely connected with the physical and mechanical properties of the reservoir formations. These parameters can be estimated using different methods, including by measuring the elastic wave velocity.
The work presents the results of laboratory studies that determine dependencies between certain physical and mechanical properties of sandstone rocks and the velocity of a compressional wave (P-wave) and a shear wave (S-wave). The dynamic parameters (Young’s Modulus and Poisson's Ratio) were determined as per ASTM D2845-08. The uniaxial compressive strength of the rock formations was determined in accordance with the GOST 21153.2-84 standard. Samples of sandstone were tested to determine the dependence of P-wave and S-wave velocities on uniaxial compressive strength, dynamic Young’s modulus and dynamic Poisson's ratio in sandstone reservoirs.
As a result of the laboratory studies, empirical dependences of uniaxial compressive strength (σс), dynamic elasticity modulus (E), Poisson's ratio (η) and velocity of P-waves (Vp) and S-waves (VS) have been obtained. This will enable tracking any changes in these parameters during the entire period of the oil and gas field development. The obtained values have been estimated over the entire measurement range. |
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| ISSN: | 2224-9923 2305-1140 |