US2010206556A1PendingUtilityA1

Enhancing the recovery of crude oil wells

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Assignee: HEISEL MICHAELPriority: Oct 21, 2008Filed: Oct 15, 2009Published: Aug 19, 2010
Est. expiryOct 21, 2028(~2.3 yrs left)· nominal 20-yr term from priority
Inventors:Michael HeiselJörg Steinke
E21B 43/168
43
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Claims

Abstract

Described is a method for introducing at least one manufactured gas in the area of an oil reservoir for the purpose of enhancing the recovery of the oil reservoir. The gas is at least temporarily introduced in shock waves.

Claims

exact text as granted — not AI-modified
1 . A method for introducing at least one manufactured gas in the area of an oil reservoir for the purpose of enhancing the recovery of the oil reservoir, characterized in that the manufactured gas is at least temporarily introduced in shock waves. 
   
   
       2 . The method according to  claim 1 , characterized in that the duration of a shock wave is chosen to be between 1 minute and 5 hours, 
   
   
       3 . The method according to  claim 2 , characterized in that the duration of the shock wave is chosen to be between 3 minutes and 3 hours. 
   
   
       4 . The method according to  claim 1 , characterized in that the duration of the shock wave is varied. 
   
   
       5 . The method according to  claim 1 , characterized in that the speed of the manufactured gas, which is to be introduced, is at least the speed of sound. 
   
   
       6 . The method according to  claim 1 , characterized in that said manufactured gas is selected from the group consisting of nitrogen, carbon dioxide, natural gas and/crude oil carrier gas(es). 
   
   
       7 . The method according to  claim 1 , characterized in that the initial pressure of the shock wave is chosen to be so that the bedrock of the oil reservoir is not damaged.

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