Importance

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Abstract

A method and apparatus for repairing or isolating holes, ruptures, splits or old perforations in marginal oil and gas wells from producing perforations. The apparatus includes two packer assemblies, a tube assembly and a slip assembly. The packer assemblies further include expandable packer elements and a vent cone mounted on a mandrel. The mandrels of the packer assemblies are connected to opposite ends of the tube assembly. The slip assembly is housed on the mandrel of one packer assembly and is used to create a positive mechanical set of the repair apparatus when positioned over the damaged area. Once the packer apparatus is positioned and the packer elements expanded, gas from producing formations flow to the wellhead through the tube assembly without interfering with the operation of down-hole pumps. The length of the gas vent packer apparatus can be varied between the packer elements depending upon the depth of damaged casing requiring repair or isolation.

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First Claim