Halliburton Energy Services, Inc.

Halliburton Company

Bennie C Gill

David Michael Haugen

Flint R George

Jerry L Walker

James Phillip Lawson

A through-tubing perforating gun and method is provided. The assembly comprises an elongated carrier strip, a plurality of perforating charges, and means for connecting the plurality of charges to the carrier strip. Each of the charges has a focal axis along which a shaped charge explosion occurs in a firing direction when the charge is actuated for use in perforating the casing wall, a cross-section that fits within a circle defined by the smallest inner diameter of the well tubing through which the assembly is intended to pass, and a detonating cord receiving means. The means for connecting the plurality of charges to the carrier strip is such that: the cross-sections of the plurality of charges substantially overlap along the line extending parallel to the length of the carrier strip, whereby the overall cross-section of the assembly fits within a circle defined by the smallest inner diameter of the well tubing through which the assembly is intended to pass; and at least one of the plurality of charges has its focal axis angularly displaced at least about 30 degrees relative to the focal axis of the next adjacent perforating charge; and the focal axis of any one of the plurality of perforating charges is angularly displaced from the focal axis of the next adjacent perforating charge no more than about 80 degrees. The means for connecting can comprise a mounting clip. More preferably, the clip is mountable to the strip in two orientations. Further, the clip is adapted such that a perforating charge is mountable to the clip in two orientations. Thereby, the clip provides a plurality of charge mounting orientations.

Perforating charge carrier assembly and method

Methods and apparatus are provided for setting a packer and for placing a seal assembly into the packer bore on a single trip into the borehole. Such apparatus includes a releasable mechanism coupling the seal assembly in fixed relation to the packer until such time as the packer is at least partially set. Methods and apparatus of the present invention also include a mechanism for hydraulically setting a packer without any manipulation of the tubing string. A pair of hydraulic pistons are utilized to move in opposite directions and exert forces on both a packer actuating sleeve and the packer body to set the packer. Methods and apparatus are provided for actuating well tools in response to the hydrostatic pressure in the well. Through use of such apparatus, a chamber at atmospheric pressure is placed in communication with one side of a hydraulically movable member, the other side of which is exposed to hydrostatic pressure. The low pressure of the atmospheric chamber causes movement of the member to operate the well tool.

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Burleson, TX, United States of America

Bennie C Gill