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US 2013/0199776 A1Published application
Apparatus and method for preventing damage to a downhole pump impeller
AssigneeOrmat Technologies, Inc.
InventorNadav Amir
Life of this patent
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AssigneeOrmat Technologies, Inc.
InventorNadav Amir
Estimating the term…
A method for preventing damage to a downhole pump impeller of a downhole pump includes setting a rotatable part of a downhole pump to a selected depth, monitoring the depth of the rotatable part, determining that the depth of the rotatable part has significantly changed, and taking a corrective action to return the depth of the rotatable part to said selected depth in order to prevent damage to an impeller that is liable to be caused by a change in depth of the rotatable part. The downhole pump further has a line shaft, an impeller engaged with the line shaft for pressurizing fluid to be extracted from a well, and monitoring apparatus for monitoring the depth of a distal end of the line shaft in order to prevent damage to the impeller that is liable to be caused by a change in depth of the distal end.
A method for maintaining a downhole pump impeller of a geothermal downhole pump, comprising the steps of locating a rotatable part of a downhole pump to a selected depth, monitoring the depth of said rotatable part, determining that the depth of said rotatable part has significantly changed, and taking a corrective action to return the depth of said rotatable part to said selected depth in order to maintain and prevent damage to said impeller that is liable to be caused by a change in depth of said rotatable part.
A geothermal downhole pump, comprising a line shaft, an impeller engaged with said line shaft for pressurizing fluid to be extracted from a well, and monitoring apparatus for monitoring the depth of a distal end of said line shaft in order to prevent damage to said impeller that is liable to be caused by a change in depth of said distal end.
Dependencies are inferred from the claim text.