Forthcoming articles

International Journal of Petroleum Engineering

International Journal of Petroleum Engineering (IJPE)

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International Journal of Petroleum Engineering (4 papers in press)

Regular Issues

  • Analytical multiphase fluid flow model for reservoirs producing under bottom water drive mechanism   Order a copy of this article
    by Jalal A. Al-Sudani, Ali M. Al-Mashat 
    Abstract: The existing of transition zone in oil reservoirs causes alteration in pressure response of the producing wells and distorts the accuracy of the models which analyse the reservoir behaviour. An analytical multiphase flow model for oil reservoirs producing under bottom aquifer drive mechanism has been developed to predict the accurate reservoir pressure drop during the transient flow period, as well as the capillary-saturation relationship under reservoir conditions. The contacted fluids are linked across free water level which reflects the interaction degree between reservoir-aquifer rocks and their own fluid properties. The results show that the conventional flow models which assume single phase fluid flow in porous media or weighted rock and fluid properties mislead the accuracy in predicting reservoir pressure. The error of these models increases with increasing the interaction degree between the reservoir and the aquifer, which depends on both of reservoir-aquifer rocks and their own fluid properties.
    Keywords: dynamic capillary transition; transient reservoir pressure; multiphase flow; water drive.
    DOI: 10.1504/IJPE.2019.10027163
  • Cased hole formation resistivity contribution in water management and production enhancement of mature reservoirs   Order a copy of this article
    by Ghareb M. Hamada, Osama A. El Mahdy, Murugavel Chandran 
    Abstract: Water saturation measurements over time are useful for tracking reservoir depletion, and diagnosing production problems such as water production that is one of the main challenges facing oil and gas producers. It is necessary to manage water production to enhance oil production. In cased hole evaluation, cased hole resistivity finds it utility in two circumstances; as a first resistivity measurement in old and new wells to assess the formation in present conditions, or as a time-lapse technique to describe temporal behaviour of reservoir dynamic and reservoir fluids movements to mainly detect bypassed oil zones and water invaded zones. Five case studies of mature reservoirs suffer from water production problems attributed to different geological and reservoir conditions. In all cases, the remedial workover operations based on the cased hole resistivity results have allowed a significant enhancement of the oil production and the implementation of an optimum field management strategy.
    Keywords: water management; bypassed oil; cased hole formation resistivity; CHFR; thermal decay time; TDT; workover.
    DOI: 10.1504/IJPE.2019.10027170
  • Seismic characterisations of channel in the delta front in C8 member, Zhenjing Area, Ordos Basin, China   Order a copy of this article
    by Hamdane Boundjadi Aladine, Wanzhong Shi, Guangqing Yao 
    Abstract: Drilling operations have proven that the Chang 8 oil group is the main hydrocarbon reservoir in Zhenjing area. Most of the sands in this zone are from distributary channels. However, the distribution and characterisation of channel are still unknown. This paper mainly discusses the seismic characterisation of channel of delta front in C8 member Zhenjing oil field, Ordos Bassin. The study area is located at the southwest part of the Ordos Basin and covers an area of 1,150 km2. Both major and small channels in the C8 member were interpreted. Twenty-six wells are drilled in our study area. They allowed us as well to interpret the channels which were our main target. In this study, four layers were fundamentally our interest: 'Y10', 'C6', 'C7' and 'C8'. The interpretation of channels was only studied in the area between 'C7' and 'C8' horizons. This work is the result issued by the study and interpretation of real data from the study area. The information and knowledge provided in this research paper will help and contribute a lot to understand more about the geological conditions of the study area.
    Keywords: Ordos Basin; delta front; reservoir prediction; distributary channels; Chang 8 oil layer.
    DOI: 10.1504/IJPE.2019.10027171
  • Analysis of the production of a pre-salt-based carbonate reservoir through integrated simulation of reservoir and production system   Order a copy of this article
    by Igor Ricardo De Souza Victorino, João Carlos Von Hohendorff Filho, Marcelo Souza De Castro, Denis José Schiozer 
    Abstract: In integrated models, reservoirs and production systems have many variables that make problems difficult to solve. This work complements a suggested methodology to reduce the number of design and operational parameters to obtain a good performance of the field production. We evaluated and validated the applied methodology for a different benchmark case, checking possibilities of extension to other cases. The case study considered a carbonate reservoir benchmark similar to a Brazilian pre-salt case. We evaluated the combination of several parameters through a decoupled sensitivity analysis for production system, selecting those which promoted greater impacts on production to be evaluated and selected in an integrated sensitivity analysis leading to an improvement in the field productivity and net present value. Sensitivity analyses were relevant to reduce the number of variables for robust optimisation problems through the reduction of the search space, favouring the decrease of the computational time and discontinuity problems.
    Keywords: explicit integration; multiphase flow; response surface methodology; RSM; decoupled; integrated; sensitivity analysis.
    DOI: 10.1504/IJPE.2019.10027164