Downhole Mechanical Tubing Perforator
AssigneeHalliburton Energy Services, Inc.
InventorsJacques Babin, Jack Clemens, Matthew Mlcak, Firas Al Ktoot
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Abstract
Methods and apparatus are presented for mechanically perforating a tubular positioned in a subterranean wellbore. A plurality of mechanical penetrators are moved radially outward, simultaneously or sequentially, in response to an actuating force applied from a downhole power unit or tubing pressure. After perforating the downhole tubular, the penetrators are retracted for re-use at a new location or for retrieval. A slip assembly can secure the tool in position during use.
Claims21
A method of mechanically perforating a downhole tubular positioned in a subterranean wellbore, the method comprising:
- running a mechanical perforator assembly into the downhole tubular in the wellbore at a selected location, an annulus defined between the perforator assembly and the downhole tubular;
- radially extending a plurality of mechanical penetrators movably mounted in the perforator assembly into contact with the downhole tubular;
- creating a plurality of perforations through the downhole tubular using the plurality of penetrators;
- and
- retracting the plurality of penetrators.
A downhole tool assembly for perforating downhole tubulars in a wellbore extending through a subterranean formation, the perforator comprising:
- a plurality of mechanical perforators movably mounted in housings of a plurality of downhole perforator tools for movement between radially retracted and radially extended positions;
- and
- an actuator connected to the plurality of perforator tools for moving the at least one penetrator from the retracted to the extended position.
Dependencies are inferred from the claim text.