Down hole pump and testing apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 27, 1981
Grant Date -
N/A
app pub date -
Jul 12, 1979
filing date -
Jul 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A downhole testing apparatus has a modular construction including a pump assembly, a screen assembly, a first packer assembly, an intake port assembly, and a second packer assembly. The pump assembly includes an improved ratchet assembly for opening and closing a relief port of a discharge passage of said pump. The pump assembly is constructed so that said ratchet assembly and the moving components of the pump are covered with a lubricating fluid contained between upper and lower seals.
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Family
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Cited Art Landscape
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