LOST CIRCULATION COMPOSITION FOR FRACTURE SEALING

摘要

A lost circulation material and method for well treatment employing the material that is effective at sealing or plugging fractured zones and has utility over a wide range of temperatures, including high temperatures. The lost circulation material includes particulate material to quickly de-fluidize the fluid formulation, fibrous material to suspend particles in the slurrified form of the composition and increase the shear strength of the resultant seal, and non-Portland cement material for increasing the compressive strength.

主权项

1. A lost circulation material composition, comprising:
particulate material; fibrous material comprising synthetic chopped fibers selected from the group consisting of polyacrylonitrile fibers and acrylonitrile/methyl acrylate fibers; and non-Portland cement material.