Downhole bridge plugs reinforcing rings and reinforcing ring fabrication methods

A downhole bridge plug, comprising:

• a mandrel;
• at least one sealing element provided on the mandrel;
• at least one backup ring provided on the mandrel on at least one side of the at least one sealing element, the at least one backup ring including:
• a first backup ring portion having a first backup ring portion body with a first outer ring section, a first inner ring section and a first spiraled ring groove separating the first outer ring section from the first inner ring section, the first inner ring section and the first outer ring section expandable partially circumferentially outwardly responsive to outward pressure applied to the first inner ring section;
• and
• a second backup ring Portion disposed adjacent to the first backup ring portion, the second backup ring portion having a second backup ring portion body with a second outer ring section, a second inner ring section and a second spiraled ring groove separating the second outer ring section from the second inner ring section the second inner ring section and the second outer ring section expandable partially circumferentially outwardly responsive to outward pressure applied to the second inner ring section;
• a pair of pressure-applying elements provided on the mandrel on respective sides of the at least one sealing element and the at least one backup ring, respectively, each of the pair of pressure-applying elements including:
• a cone;
• and
• a slip assembly engaging the cone, the slip assembly having a reinforcing ring including a reinforcing ring wall forming a ring bore, a ring insert with a ring insert wall inserted in the ring bore, a plurality of ring ridges protruding from the reinforcing ring wall and a plurality of ring grooves between the plurality of ring ridges, the ring bore of the ring insert receiving the cone;
• a mandrel cap engaging one of the pair of pressure-applying elements;
• and
• at least one coupling retainer pin coupling the second backup ring portion to the first backup ring portion.

A downhole bridge plug, comprising:

• a mandrel;
• a first sealing element and a second sealing element provided on the mandrel, the second sealing element directly engaging the first sealing element;
• a backup ring provided on the mandrel and engaging the second sealing element, the backup ring including:
• a first backup ring portion having a first backup ring portion body with a first outer ring section, a first inner ring section and a first spiraled ring groove separating the first outer ring section from the first inner ring section, the first inner ring section and the first outer ring section expandable partially circumferentially outwardly responsive to outward pressure applied to the first inner ring section;
• a second backup ring portion disposed adjacent to the first backup ring portion and engaging the second sealing element, the second backup ring portion having a second backup ring portion body with a second outer ring section, a second inner ring section and a second spiraled ring groove separating the second outer ring section from the second inner ring section, the second inner ring section and the second outer ring section expandable partially circumferentially outwardly responsive to outward pressure applied to the second inner ring section;
• and
• the first spiraled ring groove of the first backup ring portion is oriented about 180 degrees relative to the second spiraled ring groove of the second backup ring portion, with the first spiraled ring groove and the second spiraled ring groove in non-overlapping relationship to each other;
• a pair of first and second pressure-applying elements provided on the mandrel on respective sides of the first sealing element and the at least one backup ring, respectively, each of the pair of first and second pressure-applying elements including:
• a cone, the first sealing element directly engaging the cone of the first pressure-applying element and the first backup ring portion of the backup ring engaging the cone of the second pressure-applying element;
• and
• a slip assembly engaging the cone of each corresponding one of the pair of first and second pressure-applying elements, the slip assembly having a reinforcing ring including a ring wall, a plurality of ring ridges protruding from the ring wall and a plurality of ring grooves between the plurality of ring ridges;
• and
• a mandrel cap engaging one of the pair of first and second pressure-applying elements.

A downhole bridge plug, comprising:

• a mandrel;
• a first scaling element and a second sealing element provided on the mandrel, the first sealing element including:
• a first sealing element wall;
• a first sealing element bore traversing the first sealing element wall;
• and
• a distal wall bevel on the first sealing element wall;
• and
• the second sealing element including:
• a second sealing element wall;
• a second sealing element bore traversing the second sealing element wall;
• and
• a second sealing element seat in the second sealing element wall of the second sealing element, the second sealing element seat receiving and accommodating the distal wall bevel of the first sealing element;
• a backup ring provided on the mandrel and engaging the second sealing element;
• a pair of first and second pressure-applying elements provided on the mandrel on respective sides of the first sealing element and the at least one backup ring, respectively, each of the pair of first and second pressure-applying elements including:
• a cone, the first sealing element directly engaging the cone of the first pressure-applying element and the backup ring engaging the cone of the second pressure-applying element;
• and
• a slip assembly engaging the cone of each corresponding one of the pair of first and second pressure-applying elements, the slip assembly having a reinforcing ring including a ring wall, a plurality of ring ridges protruding from the ring wall and a plurality of ring grooves between the plurality of ring ridges;
• and
• a mandrel cap engaging one of the pair of first and second pressure-applying elements.