Well testing tool

A wire line operated tool for installation by wire line in a locking mandrel landed in a landing nipple in tubing in well, said locking mandrel having a longitudinal opening therethrough and a locking recess in the wall of the opening, said tool comprising a body, a sleeve concentric with the body and longitudinally slidable on the body, means limiting the longitudinal movement of the sleeve relative to the body, locking dogs movable in the sleeve from an inner running position to an outer locking position adapted to extend into the locking recess of the locking mandrel, means urging the locking dogs to the outer position when the body is in a lower position relative to the sleeve and allowing movement of the locking dogs to the inner running position on upward movement of the body to an upper position relative to the sleeve, a stinger extending downwardly below the sleeve and the body into the longitudinal passage of the locking mandrel, and sealing means extending around the stinger to engage the wall of the opening through the mandrel positioned to prevent flow through the locking mandrel between the locking mandrel and tool.

The wire line operated tool as set forth in claim characterized by a passage extending longitudinally through the stinger, a duct in the body communicating with the passage, and instrument means in the body communicating with the dust for developing a signal characteristic of a condition in the well at the lower end of the stinger.

In apparatus for landing, setting and retrieving from a well on a wire line, said well having a tubing string extending down the well, a landing nipple in and forming a part of the tubing string, and a locking mandrel having a longitudinal opening therethrough and a locking recess in the wall thereof landed in the landing nipple, the improved tool comprising a tool body constructed and arranged to be run into and retrieved from the locking mandrel on a wire line, an instrument at the upper end of the tool, a stinger extending downwardly from the tool body into the locking mandrel, a passage extending longitudinally through the stinger communicating with the instrument whereby the instrument is exposed to below-mandrel well conditions, sealing means extending around the stinger adapted to engage the wall of the longitudinal opening through the locking mandrel positioned to prevent flow through the locking mandrel between the locking mandrel and the tool, locking dogs constructed and arranged to extend from the tool into the locking recess in the locking mandrel, and locking dog releasing means actuated by lifting the tool to allow movement of the locking dogs from the locking recess.

A wireline operated tool for installation in a tubular locking mandrel landed in a landing nipple in a tubing string extending down the borehole of a well comprising a stem adapted to move downwardly on a wireline into the locking mandrel, a passage extending longitudinally through the stem, sealing means adapted to engage the tool and mandrel to prevent flow between the tool and the mandrel, locking dogs constructed and arranged to move into a locking position engaging the mandrel to secure the stem at a lower position in the locking mandrel, said dogs having a sloping upper surface urging the dogs out of the locking position on upward movement of the stem relative to the locking mandrel, resilient means constructed and arranged to exert an upward force against the locking mandrel and a downward force against the stem to oppose upward movement of the stem relative to the locking mandrel, a pressure equalizing port for transmitting pressure from below the stem to above the locking mandrel when the stem is in an upper position relative to the locking mandrel, and sealing means engaging the outer surface of the stem positioned to prevent flow through the pressure equalizing port when the stem is at the lower position relative to the locking mandrel and permit flow through the pressure equalizing port when the stem is at an upper position relative to the locking mandrel.