Asphaltene Deposition Modeling during Natural Depletion and Developing a New Method for Multiphase Flash Calculation
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 444
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شناسه ملی سند علمی:
JR_IJOGST-5-2_003
تاریخ نمایه سازی: 18 اسفند 1397
چکیده مقاله:
The specific objective of this paper is to develop a fully implicit compositional simulator for modeling asphaltene deposition during natural depletion. In this study, a mathematical model for asphaltene deposition modeling is presented followed by the solution approach using the fully implicit scheme. A thermodynamic model for asphaltene precipitation and the numerical methods for performing flash calculation with a solid phase are described. The pure solid model is used to model asphaltene precipitation. The transformation of precipitated solid into flocculated solid is modeled by using a first order chemical reaction. Adsorption, pore throat plugging, and re-entrainment were considered in the deposition model. The simulator has the capability of predicting formation damage including porosity and permeability reduction in each block. A new set of independent unknowns in a fully implicit scheme is presented for asphaltene deposition modeling. In order to find the solution of these variables, the same number of equations is also presented. The description of how to solve the nonlinear system of equations is also described.
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نویسندگان
Gholamreza Fallahnejad
M.S. Student, Department of Petroleum Engineering, Petroleum University of Technology, Ahwaz, Iran
Riyaz Kharrat
Professor, Department of Petroleum Engineering, Petroleum University of Technology, Ahwaz, Iran