Geomechanics of Oil and Gas Wells

Karev, V. I.; Kovalenko, Yuri; Устинов, К. Б.

doi:10.1007/978-3-030-26608-0

Cited by 31 publications

(3 citation statements)

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“…Constitutive models are used to describe the mechanical behavior of materials (Karev et al., 2020; Nadai, 1963; Puzrin, 2012). These consist of mathematical equations that can be used to relate physical quantities and are defined by material‐specific constants (Davis & Selvadurai, 2005).…”

Section: Introductionmentioning

confidence: 99%

Distributed Fiber Optics Measurements of Rock Deformation and Failure in Triaxial Tests

et al. 2022

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Constitutive models are used to describe the mechanical behavior of materials (Karev et al., 2020;Nadai, 1963;Puzrin, 2012). These consist of mathematical equations that can be used to relate physical quantities and are defined by material-specific constants (Davis & Selvadurai, 2005). The design of civil engineering structures relies on the precise calibration of these constants (Alonso et al., 2010;. Triaxial tests are commonly carried out to obtain the constitutive parameters of geomaterials (Jaeger et al., 2007). It is generally assumed that the triaxial test is a representative volume test, meaning that the developed stresses and strains are uniform in the sample. Accurate detection of a sample's strain is important for the determination of the mechanical properties. Linear variable differential transformers (LVDT) and strain gauges are common technologies to measure the strain response. The drawback is that the measurement is limited to the point or small zone where they are installed, forcing the assumption of a homogeneous sample response in accordance with the representative volume assumption. However, recent numerical and experimental studies have shown strain localization in the samples, even at early test stages (McBeck et al., 2019;Van der Baan & Chorney, 2019). This implies that when point measurement methods are used, the mechanical parameters obtained are dependent on the sensor location.

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Section: Introductionmentioning

confidence: 99%

Distributed Fiber Optics Measurements of Rock Deformation and Failure in Triaxial Tests

et al. 2022

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“…The developed in ref. [15] the geomechanical approach also can be used for solving of such problems.…”

Section: Introductionmentioning

confidence: 99%

Exact solution of the plane problems for poroelastic rectangle and semi‐strip

Zhuravlova

2022

Z Angew Math Mech

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The exact solutions of the plane problems of poroelasticity for a rectangle and a semi-strip are derived in the article. The original problems are reduced to one-dimensional problems with the help of finite and semi-infinite Fourier transforms for a rectangle and a semi-strip, respectively. The one-dimensional boundary value problems are formulated in vector form, and the apparatus of matrix differential calculation is used. Analytical formulas for displacements, stress, and pore pressure are derived for the rectangle and semi-strip. The investigation of stress and pore pressure for different load types and different poroelastic materials is done for the rectangle and semi-strip.

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“…This software implements the ratios describing poroelastic behaviour of a porous medium, and it is successfully used to solve geomechanical problems when developing hydrocarbon fields [36,37]. The software has shown itself well in numerical calculations of geomechanical modelling problems [33,38,39], especially when considering the complex geometry of slotted and perforated holes [32,40].…”

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confidence: 99%

Scientific justification of the perforation methods for Famennian deposits in the southeast of the Perm Region based on geomechanical modelling

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Попов

Varushkin

et al. 2022

PMI

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The article presents the results of analysing geological structure of the Famennian deposits (Devonian) in the Perm Region. Numerical modelling of the distribution of inhomogeneous stress field near the well was performed for the two considered types of perforation. With regard for the geometry of the forming perforation channels, numerical finite element models of near-wellbore zones were created considering slotted and cumulative perforation. It is ascertained that in the course of slotted perforation, conditions are created for a significant restoration of effective stresses and, as a result, restoration of reservoir rock permeability. Stress recovery area lies near the well within a radius equal to the length of the slots, and depends on the drawdown, with its increase, the area decreases. From the assessment of failure areas, it was found that in case of slotted perforation, the reservoir in near-wellbore zone remains stable, and failure zones can appear only at drawdowns of 10 MPa and more. The opposite situation was recorded for cumulative perforation; failure zones near the holes appear even at a drawdown of 2 MPa. In general, the analysis of results of numerical simulation of the stress state for two simulated types of perforation suggests that slotted perforation is more efficient than cumulative perforation. At the same time, the final conclusion could be drawn after determining the patterns of changes in permeability of the considered rocks under the influence of changing effective stresses and performing calculations of well flow rates after making the considered types of perforation channels.

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Geomechanics of Oil and Gas Wells

Cited by 31 publications

References 0 publications

Distributed Fiber Optics Measurements of Rock Deformation and Failure in Triaxial Tests

Distributed Fiber Optics Measurements of Rock Deformation and Failure in Triaxial Tests

Exact solution of the plane problems for poroelastic rectangle and semi‐strip

Scientific justification of the perforation methods for Famennian deposits in the southeast of the Perm Region based on geomechanical modelling

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