Title: Gas Injection as a Method for Improved Recovery in Gas-Condensate Reservoirs with Active Support
Abstract: Abstract One of the greatest problems currently in the oil industry is the difficulty for reaching a high hydrocarbon recovery in gas-condensate fields, the main problem being the pressure and the presence of active aquifer in such reservoirs. When a reservoir lacks active aquifer their recovery are very low of the order of 20 to 30 % for condensates and between 70 to 80 % for the gas. In reservoirs with active aquifers, their recovery factors are greater, of the order of 50% in condensates and about 70% for gas; however, a severe water invasion exists in the productive areas leaving about 40% of trapped hydrocarbons. The present paper describes a technical study for the implementation of recovery methods improved with gases, and the different factors of hydrocarbon recovery factors obtained using different gases such as dry gas, CO2, nitrogen, flue-gas and other feasible combinations of injection gases The best method obtained in such study consists on the injection of a dry gas in the zone of interest very near the water front, in order to avoid the entry of the water to the well and to recede the level of the current water in the perforations with high water cut, thus recovering trapped hydrocarbons, therefore obtaining high recovery factors of the order of 70 to 90 % of the original volume.
Publication Year: 2000
Publication Date: 2000-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 12
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