Lumping and delumping method for describing...

Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system – Fluid

Reexamination Certificate

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C703S002000, C702S006000, C702S013000, C702S030000

Reexamination Certificate

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10809833

ABSTRACT:
A lumping and delumping method is useful for estimating the properties or behavior of liquid and/or vapor hydrocarbon phases from data relative to a reference set of hydrocarbon mixtures in a series of thermodynamic states in a medium. Each one of the hydrocarbon mixtures is grouped into at least three constituents (V, I, H), considering that the gas phases resulting from separation under conditions referred to as surface conditions of each mixture do not contain (H) and that the oil phases do not contain (V). The compositions of the separation products are determined by material balance. The at least three-constituent composition of each hydrocarbon mixture is determined by combination of the products resulting from the separation in proportion to the amounts of each separation product. Delumping is performed to predict a detailed composition of a fluid in the medium.

REFERENCES:
patent: 5710726 (1998-01-01), Rowney
patent: 6108608 (2000-08-01), Watts, III
patent: 6128579 (2000-10-01), McCormack
patent: 6212488 (2001-04-01), Meier et al.
Optimization of Pseudocomponent Selection for Compositional Studies of Reservoir Fluids, Joergensen et al, SPE Annual Technical Conference and Exhibition, 1995, pp. 917-927 (XP00108675).
Pseudocomponent Selection for Compositional Simulation, Newley et al, SPE 19638, 1989, pp. 117-127.
Minimum Pseudocomponent Requirements for Compositional Thermal Simulation of Heavy Oil, Lolley et al, SPE 39640, 1998 pp. 383-400.
A New Simplified Compositional Simulator, Buchwalter, et al, pp. 177188, SPE 25858, 1993.

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