The Experts below are selected from a list of 3000 Experts worldwide ranked by ideXlab platform

Neeraj Gupta - One of the best experts on this subject based on the ideXlab platform.

  • Analyzing the Performance of Closed Reservoirs Following CO2 Injection in CCUS Projects
    Energy Procedia, 2017
    Co-Authors: Srikanta Mishra, Priya Ravi Ganesh, Mark Kelley, Neeraj Gupta
    Abstract:

    Abstract This paper discusses the use of a 2-D numerical model representing a typical depleted pinnacle reef Reservoir to generate synthetic data for multiple CO2 injection periods after a prolonged period of oil and gas production. The data are analyzed with conventional pressure-transient analysis and injectivity-index approaches from Petroleum Reservoir Engineering practice. Pressure falloff data from multiple shut-in periods, with and without boundary effects, indicate that the system response is similar to that of a composite Reservoir with different total mobility and total compressibility values in the inner (CO2-rich) and outer (CO2-free) regions. The total mobility of the inner zone can be approximated by the total mobility of the gas phase in the vicinity of the CO2-oil front, while the total mobility of the outer zone corresponds to the total mobility of the oil phase in the undisturbed region. The injectivity index, calculated as injection rate divided by the pressure buildup from reference conditions, yields a quasi-stable value during the transient period which can be correlated to the permeability-thickness product of the injection zone. During the boundary-dominated (pseudo-steady-state) period, a flowing material balance plot can be utilized to determine an apparent injectivity index, which is higher than the true injectivity index because of multi-phase skin effects.

Alfonso Garcia-gutierrez - One of the best experts on this subject based on the ideXlab platform.

  • Inflow performance relationships in geothermal and Petroleum Reservoir Engineering: A review of the state of the art
    Geothermics, 2008
    Co-Authors: Alfonso Aragón, Sara L. Moya, Alfonso Garcia-gutierrez
    Abstract:

    Abstract The different inflow performance relationships (IPRs) that have been proposed in geothermal and Petroleum Reservoir Engineering are reviewed. The applicability of these relationships to well production tests is analyzed, and the geothermal IPRs for pure water, for the binary H 2 O–CO 2 and ternary H 2 O–CO 2 –NaCl mixtures (with different salinities) are presented. The method to determine the maximum flow rate for a well is described. Two representative IPRs for Petroleum systems and two for geothermal systems that consider the fluid as a ternary mixture H 2 O–CO 2 –NaCl (for salinities less than 5%, and between 5% and 20%) are compared. It is concluded that IPRs may be used to determine the maximum flowrate of a well at any time during its productive life.

E.g. Ladopoulos - One of the best experts on this subject based on the ideXlab platform.

  • Petroleum Reservoir Engineering by non linear singular integral equations
    Mechanical Engineering Research, 2011
    Co-Authors: E.g. Ladopoulos
    Abstract:

    For the determination of the properties of several Reservoir materials, when oil reserves are moving through porous media, a new mathematical approach is proposed. Such problem is very much important for Petroleum Reservoir Engineering. Thus, the above mentioned problem is reduced to the solution of a non-linear singular integral equation, which is numerically evaluated by using the Singular Integral Operators Method (S.I.O.M.). Beyond the above, several properties are analyzed and investigated for the porous medium equation, defined as a Helmholtz differential equation. Finally, an application is given for a well testing to be checked when an heterogeneous oil Reservoir is moving in a porous medium. Hence, by using the S.I.O.M., then the pressure response from the well test conducted in the above heterogeneous oil Reservoir, is numerically calculated and investigated.

  • non linear singular integral representation for Petroleum Reservoir Engineering
    Acta Mechanica, 2011
    Co-Authors: E.g. Ladopoulos
    Abstract:

    A new mathematical model is proposed in order to determine the properties of the Reservoir materials, when oil reserves are moving through porous media, which is a very important problem of Petroleum Reservoir Engineering. Thus, the above problem is reduced to the solution of a non-linear singular integral equation, which is numerically evaluated by using the singular integral operators method (SIOM). Also, several properties of the porous medium equation, which is a Helmholtz differential equation, are analyzed and investigated. An application is finally given for a well testing to be checked when an heterogeneous oil Reservoir is moving in a porous medium. By using the SIOM, the pressure response from the well test conducted in the above heterogeneous oil Reservoir is calculated.

Srikanta Mishra - One of the best experts on this subject based on the ideXlab platform.

  • Analyzing the Performance of Closed Reservoirs Following CO2 Injection in CCUS Projects
    Energy Procedia, 2017
    Co-Authors: Srikanta Mishra, Priya Ravi Ganesh, Mark Kelley, Neeraj Gupta
    Abstract:

    Abstract This paper discusses the use of a 2-D numerical model representing a typical depleted pinnacle reef Reservoir to generate synthetic data for multiple CO2 injection periods after a prolonged period of oil and gas production. The data are analyzed with conventional pressure-transient analysis and injectivity-index approaches from Petroleum Reservoir Engineering practice. Pressure falloff data from multiple shut-in periods, with and without boundary effects, indicate that the system response is similar to that of a composite Reservoir with different total mobility and total compressibility values in the inner (CO2-rich) and outer (CO2-free) regions. The total mobility of the inner zone can be approximated by the total mobility of the gas phase in the vicinity of the CO2-oil front, while the total mobility of the outer zone corresponds to the total mobility of the oil phase in the undisturbed region. The injectivity index, calculated as injection rate divided by the pressure buildup from reference conditions, yields a quasi-stable value during the transient period which can be correlated to the permeability-thickness product of the injection zone. During the boundary-dominated (pseudo-steady-state) period, a flowing material balance plot can be utilized to determine an apparent injectivity index, which is higher than the true injectivity index because of multi-phase skin effects.

Alfonso Aragón - One of the best experts on this subject based on the ideXlab platform.

  • Inflow performance relationships in geothermal and Petroleum Reservoir Engineering: A review of the state of the art
    Geothermics, 2008
    Co-Authors: Alfonso Aragón, Sara L. Moya, Alfonso Garcia-gutierrez
    Abstract:

    Abstract The different inflow performance relationships (IPRs) that have been proposed in geothermal and Petroleum Reservoir Engineering are reviewed. The applicability of these relationships to well production tests is analyzed, and the geothermal IPRs for pure water, for the binary H 2 O–CO 2 and ternary H 2 O–CO 2 –NaCl mixtures (with different salinities) are presented. The method to determine the maximum flow rate for a well is described. Two representative IPRs for Petroleum systems and two for geothermal systems that consider the fluid as a ternary mixture H 2 O–CO 2 –NaCl (for salinities less than 5%, and between 5% and 20%) are compared. It is concluded that IPRs may be used to determine the maximum flowrate of a well at any time during its productive life.