Wells – Processes – Placing or shifting well part
Reexamination Certificate
2006-06-06
2006-06-06
Thompson, Kenneth (Department: 3672)
Wells
Processes
Placing or shifting well part
C166S373000, C166S177400, C166S242300, C166S320000
Reexamination Certificate
active
07055610
ABSTRACT:
A tool for capturing and retaining a pump down plug or ball which has been released from equipment above in a well bore, concealing the pump down plug from subsequent flow of fluid or other material through the tool, and diverting flow from a normal circulation port toward a bypass port through the tool. The pump down plug seats in, and closes, the circulation port, where the pump down plug is then retained by a tubular receptacle. Increased fluid pressure then shears the tool body loose from its housing, moving it downward to a position lower in the housing. This opens the path through which the pump down plug was released from above. A further pressure increase can be used to open the bypass port through the tool body. When the tool body is released from its first position, a diverter can close over the tubular receptacle and divert movement of fluid and other material away from the area of the circulation port and toward the bypass port.
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Jiral Dennis G.
Vincent Ray
Baker Hughes Incorporated
Spinks Gerald W.
Thompson Kenneth
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