Patent ID: 9359854
Filing Date: 2016-06-07
CPC Classification: E21B

Claim Text:
1. A straddle packer tool for setting against a constraining wall in which the straddle packer tool is positionable, the straddle packer tool comprising: a drag assembly including a tubular body defining an inner bore extending along the length of the tubular body and an outer facing surface carrying a locking mechanism for locking a position of the drag assembly relative to the constraining wall; a mandrel including a first end formed for connection to a tubular string and an opposite end, the mandrel installed in and axially moveable through the inner bore of the drag assembly; and a packing element housing including a first annular packing element and a second annular packing element spaced from the first annular packing element, the packing element housing encircling and axially moveable along the mandrel and positioned between a stop shoulder on the mandrel and the drag assembly, the packing element being settable to expand the first annular packing element and the second annular packing element by compression between the drag assembly and the stop shoulder.