A NEW APPROACH OF COMPOSITIONAL SIMULATION FOR A VOLATILE OIL RESERVOIR MODELING  

Oleh:

Syahrial, Ego

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Lemigas Scientific Contributions to Petroleum Science & Technology vol. 33 no. 01 (May 2010), page 9.
Topik: Oil; Reservoir; Hydrocarbon

Ketersediaan

Perpustakaan PKPM Nomor Panggil: L15 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

This paper proposes a new compositional simulation approach for a volatile oil reservoir modelling. The proposed formulation has an implicit equation for the oil-phase pressure and water saturation, an explicit equation for the hydrocarbon saturation, and explicit equation for the overall composition of each hydrocarbon component that satisfies thermodynamic equilibrium. An Equation of State for phase equilibrium and property calculations is used in this new formulation. Interfacial tension effects are included in this approach to characterise the thermodynamically dynamic nature of the relative permeability. A two-dimensional relative permeability algorithm is included which handles lumped hydrocarbon phase hydrocarbon phase as well as individual phase flows. For each grid block two equations are required, namely total hydrocarbon and water-phase flow equations. These equations are highly non-linear and they are linearised by using Newton-Raphson method. The resulting equations are solved by an efficient Conjugate Gradient based iterative technique to obtain pressures and saturations simultaneously, and hydrocarbon-phase saturations are deduced from their respective equations. The new compositional simulation approach is validated through analytical and numerical methods. It is demonstrated in this present paper that the results are compared favourably with analytical techniques and published numerical results. They also confirm that the proposed codified formulation is unconditionally stable and it is as stable as fully compositional model yet the computational cost reduction was substantial.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali