Summary
In reservoir simulations, it is common practice to use a limited number of
components to describe the reservoir fluids, ranging from 2 (black-oil models)
to 5–12 [compositional equation-of-state (EOS) based models]. On the opposite,
surface models usually require a greater number of components, typically from
15 to 30. The hydrocarbon components used in surface models are usually lumped
into pseudocomponents in reservoir simulations. This disparity in the
description of the mixture may become an issue whenever integrated asset models
are developed, with the aim of linking surface process and reservoir
engineering.
In this paper we implemented a consistent integrated simulation workflow
from reservoir to process. Process models with detailed compositional
formulation were linked to compositionally simpler reservoir models, using
Leibovic’s delumping scheme (Leibovic et al. 1996, 2000) to convert fluid
composition between EOSs with different component numbers.
The proposed workflow was applied to simulate two different recovery
processes, namely a gas injection below the dewpoint in a sour gas/condensate
reservoir; and a miscible gas injection in a near-critical volatile oil
reservoir. Results of this implementation, in which detailed components are
traced in reservoir model, are compared to integrated simulations in which all
stages are modeled using detailed composition.
© 2009. Society of Petroleum Engineers
View full textPDF
(
1,118 KB
)
History
- Original manuscript received:
22 February 2008
- Meeting paper published:
9 June 2008
- Revised manuscript received:
17 October 2008
- Manuscript approved:
7 March 2009
- Published online:
6 August 2009
- Version of record:
9 September 2009
View Cart
