Change of MMP dependent on temperature

Svetlana Nikolayevna Rudyk, Erik Gydesen Søgaard, Eugene Akwansa

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceabstrakt i proceedingForskning



 The experiment was conducted with the purpose to investigate how Minimum Miscibility Pressure (MMP) changes at different temperatures. MMP was measured in a high pressure unit. An original oil saturated chalk core plug from the Danish oil field in North Sea was under investigation. The plug was divided into three samples. The pure carbon dioxide was injected into a chamber with the sample under pressure gradually increasing from 60 bars to 420 bars. CO2 was injected in a first sample at temperature 50oC , second at 60oC and third at 70oC. The amount of oil extracted was plotted against pressure. The oil recovery/pressure correlation obtained showed that:

-  oil recovery grows rather in steps,

- MMP (the point B on the curve), above which the oil recovery increases insignificantly,  is equal for all the temperatures,

- but the starting points (A on the graph) from which oil recovery starts growing substantially depend on temperature,

- at  temperature 50oC the distance between A and B is longer,

- at temperature 70oC the A-B part of curve is smooth and scarcely seen.

     The observations made are important for determination of MMP. If point A is taken as MMP instead of point B, it is a big underestimation of MMP values which can lead to the loss of efficiency of oil extraction.
TitelProceedings of ESAT 2008, Cannes, France
Antal sider1
ForlagINPL Atelier de reprographie
ISBN (Trykt)2-905267-59-3
StatusUdgivet - 2008
Begivenhed23rd European Symposium on Applied Thermodynamics (ESAT2008) - , Frankrig
Varighed: 31 maj 20081 jun. 2008


Konference23rd European Symposium on Applied Thermodynamics (ESAT2008)