Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations

  • US 5,749,422 A
  • Filed: 09/04/1996
  • Issued: 05/12/1998
  • Est. Priority Date: 06/14/1993
  • Status: Expired due to Fees
First Claim
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1. A method for enhancing gas or oil production in which a compressed nitrogen rich gas is delivered to a target area selected from the group consisting of a well and a reservoir containing said gas or oil, the improvement comprising:

  • (a) removing at least a substantial portion of the oxygen contained within a feed stream of air at the site of said drilling to produce a nitrogen rich gas and an oxygen enriched waste gas;

    (b) inserting a vessel into the target area;

    (c) placing a cement-like material around the vessel to secure the same within the target area;

    (d) delivering the nitrogen rich gas to the target area; and

    (e) injecting the nitrogen rich gas into the cement-like material to reduce the density and improve the flow properties of the cement-like material.

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