Patent ID: 7753130
Filing Date: 2010-07-13
Classification: E21B

Abstract:
1. A method of placing a well bore liner, comprising: (a) inserting a liner running assembly from surface into a well bore and defining an annulus between the liner running assembly and the well bore, the liner running assembly comprising a liner placement apparatus having an annular seal with an upper surface area, the annular seal extending radially about the liner placement apparatus for sealingly engaging the well bore, the liner placement apparatus engaging at an upper end thereof a tubing string and engaging at a lower end thereof a well bore liner, and the well bore having an inlet at surface; (b) running the liner running assembly to a selected depth; (c) packing off the annulus above the inlet; (d) pumping fluid into the annulus through the inlet above the annular seal until fluid pressure on the upper surface area of the annular seal creates a force at least equal to opposing bottomhole forces below the annular seal; (e) continuing to pump fluid into the annulus through the inlet to drive the liner down the well bore.