%0 Conference Paper
%A Khanifar, A.
%A Demiral, B.
%A Darman, N.
%D 2011
%F scholars:2277
%I International Petroleum Technology Conference (IPTC)
%K Asphaltenes; Bottom hole pressure; Deposition; Equations of state; Gasoline; Offshore oil well production; Oil wells; Porous materials; Recovery, Application recovery; Asphaltene precipitation; Average-reservoir pressures; Compositional simulations; Primary production; Production facility; Reservoir performance; Reservoir recovery, Petroleum reservoir engineering
%R 10.2523/14147-ms
%T Modelling of asphaltene precipitation and deposition during WAG application
%U https://khub.utp.edu.my/scholars/2277/
%X Asphaltene precipitation and deposition from reservoir fluids during oil production life is a serious problem that can cause plugging in the formation, wellbore and production facilities. Precipitation and deposition may occur during primary production, during the displacement of reservoir oil by Co2, hydrocarbon gas or WAG application. This paper describes the modelling of asphaltene precipitation and deposition in the reservoir porous media. This model is based on fluid properties of typical reservoir oil that includes asphaltene precipitation data. The pure solid model is used to model asphaltene precipitation. The fluid model part is based on the representation of the precipitated asphaltene as a pure dense phase and division of the heaviest components of oil sample into non-precipitating and precipitating components. The fluid properties data are validated and matched with equations of state. Then, it is tried to tune the equations of state based model that represent the asphaltene as pure component solid. This paper also, mentions the concept of asphaltene modeling and its related parameters by using a compositional simulation model. After tuning the equation of state (EOS) by analyzing the oil properties data and setting the asphaltene control parameters, the simulation model was built by incorporation of the equation of state for asphaltic oil properties and the other asphaltene parameters into the compositional simulation model. The model enables the simulation of asphaltene precipitation, flocculation, and deposition including adsorption, plugging, and entrainment under natural depletion and WAG application recovery processes. The model is used to investigate the effects of asphaltene on reservoir performance parameters, including wells oil production, wells bottomhole pressure, reservoir recovery factor and average reservoir pressure, also it can be used to study formation damage including reduction in porosity and permeability in each block and changes in oil viscosity and rock wettability during different recovery scenarios. © Copyright 2011, International Petroleum Technology Conference
%Z cited By 3; Conference of International Petroleum Technology Conference 2011, IPTC 2011 ; Conference Date: 15 November 2011 Through 17 November 2011; Conference Code:138907