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Sucker Rod Overshot
The sucker rod overshot is small, durable overshot for retrieving sucker rods, couplings and other items from inside tubing strings. The overshot is designed for short catch retrieval conditions. These tools engage the tubular portion of the fish that is too short for retrieving with a standard overshot.
Construction
The Sucker rod overshot consists of Top Sub, Bowl, Grapple, and a guide. The internal components are used to establish a secure grip on the fish to retrieve it easily. Depending on the diameter of the fish to be retrieved, a Spiral Grapple or a Basket Grapple will be used. When the fish diameter approaches the maximum catch of the overshot a Spiral Grapple is required. When a Spiral Grapple is used, a control Guide must also be used on the tool. When the fish diameter is substantially under the maximum catch limits of the overshot a Basket Grapple is used. This assembly will require a Basket Grapple Control and a Plain Guide.
Assembly and operation
The overshot should be dressed with the proper size and type of Grapple and related support equipment. Makeup the overshot on the fishing string and run into the hole. When the overshot nears the top of the fish, engage it by slowly rotating to the right while gradually lowering the overshot over the fish. Release any right-hand torque out of the fishing string and pull on the fish by elevating the fishing string.