Patent ID: 6048175
Filing Date: 2000-04-11
Classification: E21B,F04F

Abstract:
A pump for removing fluid from boreholes based on the fluid achieving a predetermined level, said pump having:a. an elongated pump housing, said elongated pump housing having an interior, an exterior, a first end and a second end;b. an inlet chamber, said inlet chamber being adjacent said second end of said pump housing, said inlet chamber having multiple fluid inlets to permit fluid to enter said inlet chamber;c. a valve system, said valve system extending from said second end of said pump housing into said inlet chamber, said valve system enabling one way fluid flow between said pump housing and said inlet chamber to enable said fluid to flow from said inlet chamber into said pump housing during a filling mode and preventing said fluid from exiting said pump chamber during a pumping mode;d. a propellant line, said propellant line having an outlet entering said housing proximate said first end and a compressor connected to an inlet of said propellant line to send propellant into said propellant line;e. a fluid return line, a first end of said fluid return line extending into said pump housing through said housing first end and a second end extending into a fluid storage area;f. a fluid sensor, said fluid sensor detecting the presence of fluid within said pump chamber,wherein fluid enters said inlet chamber and is forced by hydrostatic pressure into said pump housing, said fluid rising until said fluid sensor activates said propellant, said propellant forcing said fluid through said fluid return line into said storage area.