| US 7,506,686 B2 | ||
| Diverter plugs for use in well bores and associated methods of use | ||
| David D. Szarka, Duncan, Okla. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Duncan, Okla. (US) | ||
| Filed on Nov. 01, 2005, as Appl. No. 11/263,729. | ||
| Prior Publication US 2007/0095527 A1, May 03, 2007 | ||
| Int. Cl. E21B 33/12 (2006.01); E21B 43/26 (2006.01) | ||
| U.S. Cl. 166—192 [166/386] | 10 Claims |
| 1. A diverter plug for achieving zonal isolation in a casing string in a well bore comprising:
a mandrel having a first end and a second end;
a compressible body attached to and surrounding a longitudinal portion of the mandrel; and
a sealing nose attached to the first end of the mandrel;
wherein compressible body is configured to compress as it passes through restrictions;
wherein the mandrel comprises a longitudinal member;
wherein a portion of the mandrel is adapted to being used as a retrievable fishing neck for retrieving the diverter plug;
wherein a portion of the longitudinal member protrudes beyond the compressible body; and
wherein the compressible body has a longitudinal length of at least about 1.25 times greater than the inner diameter of the
casing string.
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