Cap for a well casing, and method to retrofit a well casing...

Details Cap for a well casing, and method to retrofit a well casing... Cap for a well casing, and method to retrofit a well casing...

E - Fixed Constructions

21

B

E21B 33/04 (2006.01) E21B 17/00 (2006.01) E21B 33/00 (2006.01)

Patent

CA 2353068

This invention is a cap for protecting wells from ground surface liquids getting into a well through the top. The cap encompasses the lid and the top portion of the well casing. The cap has a top, a sidewall and an access port. The top is coupled to a sidewall to define a space to accept a lid and well casing. In preferred embodiments of the invention, the access port has either a tuba and boss or a neck and adaptor. The boss surrounds an opening in the top and receives a proximal end of the tube whereas the neck surrounds the opening in the top and the adaptor is received within the neck. The cover is disposed on the tube or neck at an open end distal to the top to cover the opening. In both embodiments, there is at least one hole in the access port. The cap prevents surface liquid from entering into the well though the top.

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