| US 7,467,661 B2 | ||
| Downhole perforator assembly and method for use of same | ||
| Scott Alistair Gordon, County Down (Ireland); Tom Chandler, Wasilla, Ak. (US); John Waddington, Uhrichsville, Ohio (US); Johnny Mack Dove, Collinsville, Tex. (US); William L. Vidrine, Houston, Tex. (US); Glen Hall, East Brewton, Ala. (US); and Jack Gammill Clemens, Fairview, Tex. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Houston, Tex. (US) | ||
| Filed on Jun. 01, 2006, as Appl. No. 11/444,630. | ||
| Prior Publication US 2007/0277980 A1, Dec. 06, 2007 | ||
| Int. Cl. E21B 43/112 (2006.01) | ||
| U.S. Cl. 166—298 [166/55.2; 166/55.7; 175/272; 175/273; 175/284] | 58 Claims |
| 10. A method for perforating a tubular disposed within a wellbore having a substantially longitudinal wellbore axis, the method
comprising the steps of:
providing a downhole power unit having a power unit housing, a self-contained power source for providing electrical power
and a moveable shaft;
providing a downhole perforator having a perforator housing, a mandrel and a penetrator;
operably associating the power unit housing with the perforator housing;
operably associating the moveable shaft with the mandrel;
disposing the downhole power unit and downhole perforator in the well;
activating the self-contained power source of the downhole power unit to longitudinally shift the moveable shaft relative
to the power unit housing along a shaft axis substantially parallel to the wellbore axis, thereby longitudinally shifting
the mandrel relative to the perforator housing along the shaft axis; and
responsive to the longitudinal shifting of the mandrel, radially extending at least a portion of the penetrator outwardly
from the perforator housing, thereby perforating the tubular.
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