Patent ID: 7699100

Claim:
A method of pumping a pump down means in a well, the method comprising the steps of: (a) positioning a loading sub housing above the well, the housing comprising a main body section having upper and lower portions; a main passage through the main body section from the upper portion to the lower portion; an enlarged area located in the main passage; a side entry port providing access to the enlarged area; and a reduced area located in the main passage downstream of the enlarged area and fluidly connected to the enlarged area, the reduced area having a smaller cross sectional area than the enlarged area, a side entry cap detachably connected to the side entry port; (b) detaching the side entry cap, and inserting a wiper ball into the enlarged area through the side entry port, and attaching the side entry cap to the side entry port, wherein the wiper ball is temporarily held within the enlarged area and blocking fluid flow in the main passage; (c) inserting the loading sub housing into a drill or well string; (d) after step “c”, applying upstream pressure to pump the wiper ball into the drill or well string.