Well tool having a metal seal and bi-directional lock

A well packer for setting in a nipple having a no-go shoulder and a locking notch comprising,

• a body having first and second spaced recesses,
• first and second locking means on the body initially retracted in the first and second recesses, respectively, said means including threaded actuating means for moving the first and second locking means axially relative to each other and into engagement with the top and bottom, respectively, of the locking notch for locking the body against axial movement in the nipple,
• metal cup sealing means on the outside of the body for sealing between the inside of said nipple and the outside of the body,
• a protector sleeve releasably connected to the body and initially enclosing the locking means and the sealing means,
• wedge surfaces on the body for expanding the first and second locking means outwardly on axial movement of the body relative to the first and second locking means,
• retaining means telescopically movable relative to the body for restraining axial movement of the locking means as the body is moved for expanding the locking means outwardly, and
• piston means on the body adapted to set the sealing means in a sealing relationship between the nipple and the body.

In a well tool having an expandable seal for sealing between an inner tubular member and an outer tubular member, the improvement in a metal seal comprising,

• a plurality of metal cup sealing rings having tapering lips positioned about the inner tubular member,
• a plurality of tapered expanders one of which extends into each sealing cup and engaging the lips for wedging the lips outwardly into a sealing relationship with both the inner and the outer tubular members,
• piston means adjacent one end of said plurality of rings for moving the expander and sealing ring together for wedging the lips outwardly, and
• said cup rings shaped for setting in a sequential order starting with the ring furthest from the piston.

In a well tool having an inner tubular member for locking in an outer tubular member which includes a locking notch, the improvement in locking means for locking the inner member to the outer member for preventing axial movement of the inner member relative to the outer member comprising,

• said inner member having first and second spaced recesses,
• first and second locking means on the inner member initially retracted in the first and second recesses, respectively,
• wedge surfaces on the inner member for moving the first and second locking means outwardly on axial movement of the body relative to the first and second locking means,
• restraining means telescopically movable relative to the inner member for restraining axial movement of the locking means as the body is moved for expanding the locking means outwardly, and
• actuating means including threaded means for moving the first and second locking means axially relative to each other and into engagement with the top and bottom, respectively, of the locking notch for locking the inner member against axial movement in the outer member.