Manually operated spear apparatus

Details Manually operated spear apparatus Manually operated spear apparatus

1988-12-27

1989-10-31

Neuder, William P.

Wells

Grapple and well anchored lifting means

294 8634, E21B 3100

Patent

active

048770850

ABSTRACT:
A manually operated spear apparatus for engaging and washing over objects such as pipe lodged in a well bore, which spear apparatus includes a landing joint or sleeve as a carrying vessel that is adapted for attachment to one or more strings of wash-over pipe and a spear apparatus fitted with a set of lugs and a set of slips and located inside the landing joint, wherein the spear apparatus is adapted to engage the jammed pipe and selectively allow the landing joint and wash-over pipe to slide past the spear apparatus by operation of the lugs during the wash-over operation and engage the wash-over pipe by operation of the slips, to lift the stuck pipe from the well bore in the retrieval operation.

REFERENCES:
patent: 2879849 (1959-03-01), Le Dus, Sr.
patent: 3070176 (1962-12-01), Le Bus, Sr. et al.
patent: 3356141 (1967-12-01), Kline
patent: 3747674 (1973-07-01), Murray

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