GEL COMPOSITIONS FOR HYDRAULIC FRACTURING APPLICATIONS

摘要

Gel compositions comprising an acrylamide polymer or copolymer crosslinked with dialdehyde, methods to produce the gel compositions, welibore treatment fluids comprising the gel compositions, and methods of treating a well bore comprising injecting the gel compositions, are provided. In the drilling, completion, and stimulation of oil and gas wells, well treatment fluids are often pumped into well bore holes under high pressure and at high flow rates causing the rock formation surrounding the well bore to fracture.

主权项

1. A gel composition comprising an acrylamide polymer or copolymer crosslinked with dialdehyde wherein the gel composition is formed by combining the acrylamide polymer or copolymer and dialdehyde in an aqueous solution at a pH in the range of about 7.5 to about 11, and wherein the acrylamide polymer or copolymer has a charge between about 15 to about 35%, and wherein the molar ratio of dialdehyde to monomers of the acrylamide polymer or copolymer is in the range of about greater than about 0.2 to about 2.0.