Downhole apparatus
OwnerRobert Patrick Appleton, Gholam Hossein Rastegarinventors
Life of this patent
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Abstract
A method of setting a packer in a bore comprises the steps: mounting a packer on an elongate support member; mounting a casing scraper (10) on the elongate member; running the packer and the casing scraper (10) into a bore on the elongate member to a section of the bore where the packer is to be set; cleaning the section of bore with the scraper (10); and setting the packer in the cleaned section of bore. The scraper (10) comprises: a mandrel (22) adapted for coupling to the elongate member; a sleeve (14) mounted on the mandrel (22); and a plurality of scraper members (16) on the sleeve (14), the members (16) being radially movable relative to the mandrel (22).
Claims23
A method of setting a packer in a drilled bore, the method comprising:
- mounting a packer on an elongate member;
- mounting a casing scraper on the elongate member;
- running the packer and the casing scraper into a bore on the elongate member to a section of the bore where the packer is to be set;
- cleaning said section of bore with the scraper;
- and
- setting the packer in the cleaned section of bore.
A casing scraper comprising a body and means for mounting the body to a packer so that the scraper may be run into a drilled bore on an elongate member together with the packer.
A downhole casing scraper for mounting on an elongate member for running the scraper into a drilled bore, the scraper comprising:
- a mandrel;
- a sleeve mounted on the mandrel;
- and a plurality of scraper members on the sleeve, the members being radially movable relative to the mandrel.
Dependencies are inferred from the claim text.