Positive indication system for well annulus cement displacement

Details Positive indication system for well annulus cement displacement Positive indication system for well annulus cement displacement

E - Fixed Constructions

21

B

E21B 33/14 (2006.01) E21B 33/138 (2006.01) E21B 34/06 (2006.01) E21B 34/14 (2006.01)

Patent

CA 2383444

An annulus collar around a well production tube is cast in cement by a procedure that axially delineates the collar between two expandable well packers in the production tube string. Between the packers are a pair of cementing valves. An ingress valve is most proximate to the lower packer whereas an egress valve is most proximate to the upper packer. Additionally, the egress valve is modified to enclose the egress valve with a screen having mesh or slot openings that correspond with a screen plugging material that is mixed with the cement.

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