FIELD: oil industry. SUBSTANCE: invention is specifically related to equipment with drilled-out packer to seal drill pipe and tubing strings in well and to shut off shaft of well. Additional piston with freedom of axial movement is installed between cylinder and rod of location tool. It rests against cone of upper tool extractor unit with fixing arm which ensures increased reliability of sealing, fixing and closing of drilled-out packer. EFFECT: increased reliability of sealing, fixing and closing of drilled-out packer. 3 cl, 1 dwg
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Authors
Dates
2001-07-10—Published
1999-05-07—Filed