SPE Annual Technical Conference and Exhibition 1995
DOI: 10.2118/30767-ms
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Gas Condensate Reservoir Behaviour: Productivity and Recovery Reduction Due to Condensation

Abstract: The depletion of gas condensate reservoirs to pressures below the dew point has been studied by reservoir engineers for many years. Pressure decline below the dew point pressure causes condensation to occur which creates a hydrocarbon liquid saturation in the reservoir. This process reduces liquid recovery and may reduce gas productivity and gas recovery. Exxon experience, particularly in low-productivity, high-yield gas condensate fields, suggests that liquid condensate formation can result in severe loss of … Show more

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Cited by 136 publications
(50 citation statements)
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“…Below the dew point, the degree of productivity reduction will be controlled by the critical condensate saturation and the shape of the gas and condensate relative permeability curves 20 .…”
Section: Relative Permeabilitymentioning
confidence: 99%
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“…Below the dew point, the degree of productivity reduction will be controlled by the critical condensate saturation and the shape of the gas and condensate relative permeability curves 20 .…”
Section: Relative Permeabilitymentioning
confidence: 99%
“…Barnum et al 20 showed that the recovery factor of gas condensate radial wells is only affected by condensate blocking if the well's kh is less than 1,000 md-ft. For higher quality reservoirs, productivity loss is not very severe.…”
Section: Condensate Blockingmentioning
confidence: 99%
“…The gas condensate systems exist as a single-phase fluid (gas) at original reservoir conditions, but unlike a wet or dry gas reservoir, it separates into two phases, a gas and a liquid (condensate) at pressures below the saturation pressure of the reservoir [5]. The main problems associated with gas condensate systems are the formation damage effects leading to a reduced relative permeability of gas because of liquid condensate dropout, and permanent loss of valuable liquid due to the trapping capillary effects in the reservoir [6] (Figure 1). …”
Section: Introductionmentioning
confidence: 99%
“…The level of productivity decline depends on several factors, including critical condensate saturation, relative permeability, nonDarcy flow, and high capillary number effects (Bennion 2001;Whitson and Fevang 1999). As many authors (Barnum et al 1995;Boom et al 1996) investigated, there are expected to have three different condensate saturation regions around the wellbore. The first region which is far away from the well, contains single gas phase include the initial liquid saturation, since the pressure is above the dew-point pressure.…”
Section: Introduction Gas Condensate Reservoirsmentioning
confidence: 99%