Straddle packer tool for well treating having valving and...

Details Straddle packer tool for well treating having valving and... Straddle packer tool for well treating having valving and...

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/124 (2006.01) E21B 33/138 (2006.01)

Patent

CA 2381620

A straddle packer tool for treatment of wells has a tool body supporting sealing elements in spaced relation for defining a sealed annulus zone within a wellbore. The tool body defines a treatment fluid passage having treatment ports that open to the sealed annulus zone for formation fracturing or other well treatment. The tool body has a bypass passage therethrough which is isolated from the treatment fluid passage and communicates with the wellbore above and below the sealed annulus zone. A check valve permits downward flow of well fluid from the bypass passage into the wellbore below the tool and prevents upward flow of fluid into the bypass passage. Bypass ports conduct fluid flow to and from the bypass passage and the wellbore above and below the sealed annulus zone. A packer actuated bypass valve is opened or closed to control the flow of well fluid within the bypass passage.

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