Well consolidation method

• US 3,991,827 A
• Filed: 12/22/1975
• Issued: 11/16/1976
• Est. Priority Date: 12/22/1975
• Status: Expired due to Term

• Current Assignee: Atlantic Richfield Company Incorporated (BP PLC)
• Original Assignee: Atlantic Richfield Company Incorporated (BP PLC)
• Inventors: Schall, Michael D.
• Primary Examiner(s): Novosad, Stephen J.
• Application Number:
  US05/642,892
• Time in Patent Office: 330 Days
• Field of Search: 166/253, 166/250, 166/276, 166/278, 166/285, 166/289, 166/292-295, 73/151, 73/152, 73/155
• US Class Current: 166/253.1
• CPC Class Codes: E21B 43/025 Consolidation of loose sand or the like round the wells without excessively decreasing the permeability thereof
• CPC Class Codes: E21B 47/11 using tracers; using radioactivity

Abstract

In a method wherein two or more separate zones in a single wellbore are subjected to a consolidation treatment to prevent the production of solid particles from those zones into the wellbore, a tracer material is incorporated into each zone which is subjected to the consolidated treatment, the tracer material being unique to that particular zone. Thereafter, fluid produced from the well is analyzed to determine if any and, if so, which zone or zones are still leaking solid particles into the well. Subsequent consolidation retreatment of the well is then limited to the zone or zones indicated to be leaking solid particles rather than being applied to all zones in the well again.

Claims

1. In a consolidation method in a well having at least two separate zones which are to be subjected to the consolidation treatment, the improvement comprising incorporating in each zone which is subjected to said consolidation treatment a tracer material which has a color that is unique to that particular zone so that said colored tracer material is visually identifiable at the earth'"'"'s surface, said tracer material being such that it will at least in part be produced back to the earth'"'"'s surface if the consolidation treatment is not adequate, and analyzing at the earth'"'"'s surface fluid thereafter produced from said well to determine if any and if so which zone is still leaking solid particles into said well.

2. The method of claim 1 wherein the tracer material is solid particles, and different colored particles are incorporated in each zone which is subjected to a consolidation technique.

3. The method of claim 1 wherein said tracer material is incorporated into each zone during the consolidation treatment of that zone.