Down hold packing gland and method for long stroke pumper

Details Down hold packing gland and method for long stroke pumper Down hold packing gland and method for long stroke pumper

1977-03-14

1978-07-11

Leppink, James A.

Wells

Valves, closures or changeable restrictors

166 84, 277112, E21B 3303, E21B 2300

Patent

active

040995712

ABSTRACT:
A packing gland is positioned down within an oil well hole and is held in place by elastomeric sealing and locking devices which are actuated from above the hole through a torque tube. Rotation of the torque tube in one direction lowers the tube axially relative to the elastomers and causes them to expand radially thus locking and sealing the stuffing gland assembly in the well head equipment at a depth of about 100 feet below the ground surface. Counter rotation of the torque tube allows the elastomers to retract radially thus releasing the stuffing gland assembly. Once the stuffing gland assembly is released, a union joint assembly is moved downward relative to the stuffing gland assembly and a unique spring ring slides over a cylindrical boss on the packing gland assembly to couple the union joint assembly with the packing gland assembly. The packing gland assembly then is raised above the ground surface simultaneously with lifting the polish rod from the hole. A drain port is provided between the elastomer locking and sealing devices to provide a flow passage back into the well when the packing gland is removed allowing the portion of the casing housing the wire rope to drain dry.

REFERENCES:
patent: 879166 (1908-02-01), Haven
patent: 2674474 (1954-04-01), Lister
patent: 3640342 (1972-02-01), Gault
patent: 3662829 (1972-05-01), Gault et al.
patent: 3744567 (1973-07-01), Grable

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