Well pumping

A seal assembly for use in a sucker rod well pumping system which employs a hollow pipe string that extends downwardly into a well comprising a first seal carrying at least one first sealing element, said first seal being of a configuration such that said sucker rod can reciprocate through said first seal while said at least one sealing element engages the inner surface of said hollow pipe string in a vapor tight sealing manner, said first seal carrying a length of longitudinally compressible hose, and said hose carrying a second seal carrying at least one second sealing element, said second seal being of a configuration to fit around said sucker rod so that said at least one second sealing element engages said sucker rod in a vapor tight manner.

In apparatus for pumping a well wherein a sucker rod string is reciprocated inside a pipe string that has an inner surface and extends downwardly into a wellbore, the improvement comprising a seal assembly carried by and internally of said pipe string, said seal assembly comprising a first seal carried by said pipe string, said first seal having at least one first sealing elements for sealing against said inner surface of said pipe string, said first seal having an aperture through which said sucker rod string can be reciprocated, said first seal carrying a compressible hose through which said sucker rod string can extend, said compressible hose carrying a second seal having an aperture through which said sucker rod string can extend and at least one second sealing element for sealing against said sucker rod string, said second seal also carrying a fastener for fixing said second seal to said sucker rod string.