The Experts below are selected from a list of 14967 Experts worldwide ranked by ideXlab platform

Mingqiang Wei - One of the best experts on this subject based on the ideXlab platform.

  • blasingame decline type curves with material balance pseudo time modified for multi fractured horizontal wells in shale gas reservoirs
    Journal of Natural Gas Science and Engineering, 2016
    Co-Authors: Mingqiang Wei, Yonggang Duan, Mingzhe Dong, Quantang Fang
    Abstract:

    Abstract Production decline analysis has been considered as a robust method to obtain the Flow parameters, reservoir properties and original gas in place. Although advanced Blasingame production decline analysis methods for vertical wells, fractured wells and horizontal wells in conventional reservoirs are widely used, there is no Blasingame production decline type curves for multi-fractured horizontal wells (MFHW) with considering stimulated reservoir volume (SRV) in shale gas reservoirs yet. Compared with conventional gas reservoirs, multi-Flow mechanisms (such as Darcy Flow, diffusion and adsorption/desorption) and complex Flow behaviors of MFHW exist in shale gas reservoirs, bringing a big challenge for analyzing the rate decline performance of the wells. Thus, in this paper based on the material balance equation in consideration of adsorption/desorption, the material balance pseudo-time of Blasingame decline type curves is modified so as to extend the theory of Blasingame production decline analysis to shale gas reservoirs. Considering the nonLinearity caused by gas desorption and diffusion, and the complex Flow of MFHW, a numerical method is applied in this paper to obtain Blasingame type curves. Based on the perpendicular bisection (PEBI) grids, a numerical model considered SRV is developed and the solution is obtained using control volume finite element method and the fully implicit method. Further Blasingame type curve is validated by a simplify model, and Blasingame production decline type curves of the MFHW considering SRV in a shale gas reservoir are plotted through computer programming. Five Flow regimes, including early Formation Linear Flow, early radial Flow, compound Linear Flow, the second radial Flow and pseudo-steady Flow, are recognized. Compared with the modified Blasingame type curves presented in this paper, the ones with traditional pseudo-time have a tendency to underestimate the value of normalized rate, normalized cumulative production, normalized integral derivative cumulative production and the reserve. The effects of relevant parameters including SRV radius, outer region radius, permeability in SRV region and outer region, Langmuir pressure, Langmuir volume and diffusion coefficient on type curves are analyzed as well. This work expands our understanding of a MFHW Flow behaviors in shale gas reservoirs, which can be used to estimate with reservoir properties, SRV, and reserves in these types of reservoirs.

Mohd Faisal Rasdi - One of the best experts on this subject based on the ideXlab platform.

  • diagnosing fracture network pattern and Flow regime aids production performance analysis in unconventional oil reservoirs
    SPE EAGE European Unconventional Resources Conference & Exhibition - From Potential to Production, 2012
    Co-Authors: Mohd Faisal Rasdi
    Abstract:

    Many tight or shale gas wells exhibit a Linear Flow regime that can last for years. However, production analysis in unconventional oil reservoirs, such as the Bakken, shows that the Linear Flow regime is not the only dominant Flow regime. Field data suggest that the duration of boundary-dominated Flow influenced by the stimulated-reservoir volume (SRV) and compound-Linear Flow generally overshadow the early-time Linear Flow regime. Depending on the fracture network or SRV patterns, Formation Linear Flow in unconventional oil reservoirs may only last for a few months but contribute about 30% of the total estimated ultimate recovery (EUR). This study develops a procedure for identification of different fracture network patterns and inference of related Flow parameters based on analytical methods. The reservoir description so derived is transported to a numerical reservoir-Flow simulation model to capture the effects of compaction, multiphase Flow behavior, and various Flow regimes in an unconventional oil reservoir system. This coupled approach helps illuminate reservoir performance, which allows insights into history matching. In particular, we demonstrate (a) fracture network patterns and Flow regime diagnosis through rate-transient analysis; (b) coupled numerical reservoir simulation with analytical modeling results for performance-constrained history matching; (c) sensitivity analysis on the heterogeneity effect, compaction effect, and multiphase Flow effects; and (d) field application of the proposed procedure on Bakken wells. This proposed method demonstrates that analytical methods should be used before undertaking a detailed numerical reservoirFlow simulation study. This understanding paves the way for much improved reservoir characterization in unconventional oil reservoirs.

  • diagnosing fracture network pattern and Flow regime aids production performance analysis in unconventional oil reservoirs
    SPE EAGE European Unconventional Resources Conference & Exhibition - From Potential to Production, 2012
    Co-Authors: Mohd Faisal Rasdi
    Abstract:

    Many tight or shale gas wells exhibit a Linear Flow regime that can last for years. However, production analysis in unconventional oil reservoirs, such as the Bakken, shows that the Linear Flow regime is not the only dominant Flow regime. Field data suggest that the duration of boundary-dominated Flow influenced by the stimulated-reservoir volume (SRV) and compound-Linear Flow generally overshadow the early-time Linear Flow regime. Depending on the fracture network or SRV patterns, Formation Linear Flow in unconventional oil reservoirs may only last for a few months but contribute about 30% of the total estimated ultimate recovery (EUR). This study develops a procedure for identification of different fracture network patterns and inference of related Flow parameters based on analytical methods. The reservoir description so derived is transported to a numerical reservoir-Flow simulation model to capture the effects of compaction, multiphase Flow behavior, and various Flow regimes in an unconventional oil reservoir system. This coupled approach helps illuminate reservoir performance, which allows insights into history matching. In particular, we demonstrate (a) fracture network patterns and Flow regime diagnosis through rate-transient analysis; (b) coupled numerical reservoir simulation with analytical modeling results for performance-constrained history matching; (c) sensitivity analysis on the heterogeneity effect, compaction effect, and multiphase Flow effects; and (d) field application of the proposed procedure on Bakken wells. This proposed method demonstrates that analytical methods should be used before undertaking a detailed numerical reservoirFlow simulation study. This understanding paves the way for much improved reservoir characterization in unconventional oil reservoirs.

Quantang Fang - One of the best experts on this subject based on the ideXlab platform.

  • blasingame decline type curves with material balance pseudo time modified for multi fractured horizontal wells in shale gas reservoirs
    Journal of Natural Gas Science and Engineering, 2016
    Co-Authors: Mingqiang Wei, Yonggang Duan, Mingzhe Dong, Quantang Fang
    Abstract:

    Abstract Production decline analysis has been considered as a robust method to obtain the Flow parameters, reservoir properties and original gas in place. Although advanced Blasingame production decline analysis methods for vertical wells, fractured wells and horizontal wells in conventional reservoirs are widely used, there is no Blasingame production decline type curves for multi-fractured horizontal wells (MFHW) with considering stimulated reservoir volume (SRV) in shale gas reservoirs yet. Compared with conventional gas reservoirs, multi-Flow mechanisms (such as Darcy Flow, diffusion and adsorption/desorption) and complex Flow behaviors of MFHW exist in shale gas reservoirs, bringing a big challenge for analyzing the rate decline performance of the wells. Thus, in this paper based on the material balance equation in consideration of adsorption/desorption, the material balance pseudo-time of Blasingame decline type curves is modified so as to extend the theory of Blasingame production decline analysis to shale gas reservoirs. Considering the nonLinearity caused by gas desorption and diffusion, and the complex Flow of MFHW, a numerical method is applied in this paper to obtain Blasingame type curves. Based on the perpendicular bisection (PEBI) grids, a numerical model considered SRV is developed and the solution is obtained using control volume finite element method and the fully implicit method. Further Blasingame type curve is validated by a simplify model, and Blasingame production decline type curves of the MFHW considering SRV in a shale gas reservoir are plotted through computer programming. Five Flow regimes, including early Formation Linear Flow, early radial Flow, compound Linear Flow, the second radial Flow and pseudo-steady Flow, are recognized. Compared with the modified Blasingame type curves presented in this paper, the ones with traditional pseudo-time have a tendency to underestimate the value of normalized rate, normalized cumulative production, normalized integral derivative cumulative production and the reserve. The effects of relevant parameters including SRV radius, outer region radius, permeability in SRV region and outer region, Langmuir pressure, Langmuir volume and diffusion coefficient on type curves are analyzed as well. This work expands our understanding of a MFHW Flow behaviors in shale gas reservoirs, which can be used to estimate with reservoir properties, SRV, and reserves in these types of reservoirs.

Mingzhe Dong - One of the best experts on this subject based on the ideXlab platform.

  • blasingame decline type curves with material balance pseudo time modified for multi fractured horizontal wells in shale gas reservoirs
    Journal of Natural Gas Science and Engineering, 2016
    Co-Authors: Mingqiang Wei, Yonggang Duan, Mingzhe Dong, Quantang Fang
    Abstract:

    Abstract Production decline analysis has been considered as a robust method to obtain the Flow parameters, reservoir properties and original gas in place. Although advanced Blasingame production decline analysis methods for vertical wells, fractured wells and horizontal wells in conventional reservoirs are widely used, there is no Blasingame production decline type curves for multi-fractured horizontal wells (MFHW) with considering stimulated reservoir volume (SRV) in shale gas reservoirs yet. Compared with conventional gas reservoirs, multi-Flow mechanisms (such as Darcy Flow, diffusion and adsorption/desorption) and complex Flow behaviors of MFHW exist in shale gas reservoirs, bringing a big challenge for analyzing the rate decline performance of the wells. Thus, in this paper based on the material balance equation in consideration of adsorption/desorption, the material balance pseudo-time of Blasingame decline type curves is modified so as to extend the theory of Blasingame production decline analysis to shale gas reservoirs. Considering the nonLinearity caused by gas desorption and diffusion, and the complex Flow of MFHW, a numerical method is applied in this paper to obtain Blasingame type curves. Based on the perpendicular bisection (PEBI) grids, a numerical model considered SRV is developed and the solution is obtained using control volume finite element method and the fully implicit method. Further Blasingame type curve is validated by a simplify model, and Blasingame production decline type curves of the MFHW considering SRV in a shale gas reservoir are plotted through computer programming. Five Flow regimes, including early Formation Linear Flow, early radial Flow, compound Linear Flow, the second radial Flow and pseudo-steady Flow, are recognized. Compared with the modified Blasingame type curves presented in this paper, the ones with traditional pseudo-time have a tendency to underestimate the value of normalized rate, normalized cumulative production, normalized integral derivative cumulative production and the reserve. The effects of relevant parameters including SRV radius, outer region radius, permeability in SRV region and outer region, Langmuir pressure, Langmuir volume and diffusion coefficient on type curves are analyzed as well. This work expands our understanding of a MFHW Flow behaviors in shale gas reservoirs, which can be used to estimate with reservoir properties, SRV, and reserves in these types of reservoirs.

Yonggang Duan - One of the best experts on this subject based on the ideXlab platform.

  • blasingame decline type curves with material balance pseudo time modified for multi fractured horizontal wells in shale gas reservoirs
    Journal of Natural Gas Science and Engineering, 2016
    Co-Authors: Mingqiang Wei, Yonggang Duan, Mingzhe Dong, Quantang Fang
    Abstract:

    Abstract Production decline analysis has been considered as a robust method to obtain the Flow parameters, reservoir properties and original gas in place. Although advanced Blasingame production decline analysis methods for vertical wells, fractured wells and horizontal wells in conventional reservoirs are widely used, there is no Blasingame production decline type curves for multi-fractured horizontal wells (MFHW) with considering stimulated reservoir volume (SRV) in shale gas reservoirs yet. Compared with conventional gas reservoirs, multi-Flow mechanisms (such as Darcy Flow, diffusion and adsorption/desorption) and complex Flow behaviors of MFHW exist in shale gas reservoirs, bringing a big challenge for analyzing the rate decline performance of the wells. Thus, in this paper based on the material balance equation in consideration of adsorption/desorption, the material balance pseudo-time of Blasingame decline type curves is modified so as to extend the theory of Blasingame production decline analysis to shale gas reservoirs. Considering the nonLinearity caused by gas desorption and diffusion, and the complex Flow of MFHW, a numerical method is applied in this paper to obtain Blasingame type curves. Based on the perpendicular bisection (PEBI) grids, a numerical model considered SRV is developed and the solution is obtained using control volume finite element method and the fully implicit method. Further Blasingame type curve is validated by a simplify model, and Blasingame production decline type curves of the MFHW considering SRV in a shale gas reservoir are plotted through computer programming. Five Flow regimes, including early Formation Linear Flow, early radial Flow, compound Linear Flow, the second radial Flow and pseudo-steady Flow, are recognized. Compared with the modified Blasingame type curves presented in this paper, the ones with traditional pseudo-time have a tendency to underestimate the value of normalized rate, normalized cumulative production, normalized integral derivative cumulative production and the reserve. The effects of relevant parameters including SRV radius, outer region radius, permeability in SRV region and outer region, Langmuir pressure, Langmuir volume and diffusion coefficient on type curves are analyzed as well. This work expands our understanding of a MFHW Flow behaviors in shale gas reservoirs, which can be used to estimate with reservoir properties, SRV, and reserves in these types of reservoirs.