gotco international02
external catch internal catch junk catchers accessory tools milling and washover equipment remedial and repairgotco internationalexternal catchinternal catchjunk catchersexternal catch internal catch junk catchers accessory tools milling and washover equipment remedial and repair
09accessory toolsmilling and washover equipmentremedial repair
13gotco international 11410 Spring Cypress Rd - Tomball, Texas 77377 USA Sales 281 591 1874 Fax 281 999 4251 1 800 OVERSHOT

Lubricated Bumper Sub

The Gotco Lubricated Fishing Bumper Sub is designed to withstand repetitive and sustained loads in severe fishing, drilling and well workover operations. The tool can be stroked upward or downward. the average stroke is between 10" and 18". Longer strokes can be furnished upon request.

Construction

The Gotco Lubricated Bumper Sub is manufactured from high-grade alloy steel. The tool is engineered to reduce high degrees of stress concentration in critical areas of the tool. This promotes longer service life and a better quailty tool.

Assembly and Operation

The Gotco Lubricated Bumper Sub is normally installed in the fishing string just above the fishing tool, safety joint or unlatching joint. Heavy-duty splines allows for transmitting full torque at all times during operation. Striking surfaces are provided at the limits of the free stroke movement to produce the impact necessary for achieving the greatest intensity of bumping action in either direction.

The primary function of the Lubricated Bumper Sub is to enable the operator to release the fishing tool in the event that it becomes impossible to pull the fish. It will provide the necessary impact and deliver the torque required to release the tool from the fish.

The Lubricated Bumper Sub can be used to release the recovered fish at the top of the hole, or be used to "Jar Up" or "Bump Down" in the hole.

Standard Components

The Lubricated Bumper Sub is composed of six major parts:
  1. Mandrel
  2. Knocker
  3. Washpipe
  4. Middle Body
  5. Mandrel Body
  6. Washpipe Body
The critical seal points of the Mandrel and Washpipe are equipped with a seal-ring assembly consisting of an O-ring, Non-Extrusion Ring and Seal Protector Ring. This Seal Ring set keeps the diametrical clearance at the seal points to an absolute minimum as hydraulic pressure is applied from either direction in the tool. This greatly increases the life of the O-Ring and seal set by prohibiting O-Ring extrusion.

Download

For sizes, specifications, and ordering instructions download this page in PDF.
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