METHOD AND APPARATUS FOR PLUGGING WELL PIPE PERFORATIONS

• US 3,437,147 A
• Filed: 02/23/1967
• Issued: 04/08/1969
• Est. Priority Date: 02/23/1967
• Status: Expired due to Term

• Current Assignee: Carl A. Davies
• Original Assignee: Carl A. Davies
• Inventors: Davies, Carl A.
• Application Number:
  US04/618,144
• Time in Patent Office: 775 Days
• US Class Current: 166/284
• CPC Class Codes: C09K 8/72 Eroding chemicals, e.g. acids
• CPC Class Codes: E21B 33/134 Bridging plugs
• CPC Class Codes: E21B 33/138 Plastering the borehole wall; Injecting into the formation
• CPC Class Codes: E21B 43/25 Methods for stimulating production by vibrating earth formations E21B43/003
• CPC Class Codes: E21B 43/261 Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation

Claims