Pumps – Expansible chamber type – Valved piston
Patent
1983-06-13
1985-02-12
Freeh, William L.
Pumps
Expansible chamber type
Valved piston
92 131, 74 41, 74586, F04B 3900
Patent
active
044988451
ABSTRACT:
Method and apparatus by which a malfunctioning downhole pump of the reciprocatory type can be rendered operative by bumping the pump piston against structure associated with the pump barrel. The invention is carried out on a reciprocatory downhole pump of the type which is actuated by a rod string. The rod string is reciprocated by a pumpjack unit. A hydraulic jack apparatus is interposed between the hanger bar and polish rod clamp of the pumpjack bridle assembly so that the hydraulic jack can be extended to enable spacers to be removed or inserted at a location which changes the relative position of the polish rod clamp and hanger bar, and which also changes the relative position of the downhole pump piston and pump barrel. This action enables the pump piston to bump or impact against the pump barrel, thereby imparting a jarring movement into the traveling and fixed pump valves, so that debris which may have accumulated between either of the seats and valve elements of the pump can be dislodged; or, in the instance of gas lock, compressible fluid is forced from the pump, uphole to the surface by the jarring or bumping action. The present method easily enables the downhole pump to be made operative without the necessity of withdrawing the sucker rod string or the tubing string from the borehole.
REFERENCES:
patent: 2351576 (1944-06-01), Thigpen
patent: 2741915 (1956-04-01), Renken et al.
patent: 2877652 (1959-03-01), Muschalek
patent: 3089428 (1963-05-01), Johnston
patent: 3160111 (1964-12-01), Berry
patent: 3203669 (1965-08-01), Johansson
patent: 3251310 (1966-05-01), Wittwer et al.
patent: 3355938 (1967-12-01), Neely et al.
patent: 3499324 (1970-03-01), Wenisch
patent: 4187765 (1980-02-01), Mattoon
patent: 4286656 (1981-09-01), Felder
patent: 4296678 (1981-10-01), Felder
patent: 4354395 (1982-10-01), Page, Jr.
Gage Bobby D.
Pittman Homer F.
Bates Marcus L.
Freeh William L.
Neils Paul F.
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