Pumps – Expansible chamber type – Valved piston
Patent
1977-02-28
1979-02-13
Freeh, William L.
Pumps
Expansible chamber type
Valved piston
92165R, 403185, 403220, 166176, F04B 2104, F16J 1518, F21B 2700
Patent
active
041393341
ABSTRACT:
A cable string for replacement of a prior art sucker rod string used in pumping oil wells with a pump jack unit. The cable string is comprised of a plurality of individual joints of multi-strand material connected together by a coupling member. Each individual joint has a pin member at each extremity thereof. Each joint is affixed in series relationship to another joint by the coupling member. The coupling member has a box connection at each extremity thereof. Hence, the pin member of adjacent joints are connected together by the box connection of the coupling member to provide a string of flexible cable joints of sufficient length to extend from proximity of the pump jack downhole through the borehole into proximity of the downhole pump. When a plurality of cable joints are connected together, the resulting length thereof is equivalent to the length of a standard solid metal joint of sucker rod.
REFERENCES:
patent: 368016 (1887-08-01), Schrankel
patent: 956346 (1910-04-01), Heeter
patent: 1002448 (1911-09-01), Putnam
patent: 1721245 (1929-07-01), Black
patent: 2793917 (1957-05-01), Ward
patent: 3013793 (1961-12-01), Howell
patent: 3471904 (1969-10-01), Aho
patent: 3490526 (1970-01-01), Collett
patent: 3889579 (1975-06-01), Wiechowski
patent: 3965802 (1976-06-01), Jacobs
Iglehard Hilary H.
Payne Bobby L.
Bates Marcus L.
Freeh William L.
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