OPEN HOLE STRADDLE TOOL

A straddle packer tool comprises a mandrel and a housing. Spaced packers are carried by the housing. A plurality of bypass ports are arranged in the mandrel and housing for aligning in several positions: a first downhole position for bypassing fluid around the packers and through the mandrel; an int...

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Bibliographic Details
Main Authors SHKURTI, PIRO T, SERAFIN, WITOLD P, TATE, BARRY J
Format Patent
LanguageEnglish
French
Published 14.06.2003
Edition7
Subjects
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Summary:A straddle packer tool comprises a mandrel and a housing. Spaced packers are carried by the housing. A plurality of bypass ports are arranged in the mandrel and housing for aligning in several positions: a first downhole position for bypassing fluid around the packers and through the mandrel; an intermediate position wherein the bypass ports are misaligned and a first internal pressure actuates the packers to isolate a zone and a second higher internal pressure releases a stop for enabling relative movement to an uphole positio n wherein the bypasses are misaligned and the mandrel's bore is opened to isolated zone. 34
Bibliography:Application Number: CA20022412813