Methods of treating subterranean zones using gelled aqueous treating fluids containing environmentally benign sequestering agents

摘要

Methods of treating subterranean zones using gelled aqueous treating fluids containing environmentally benign sequestering agents are provided. The methods basically comprise the steps of preparing or providing a treating fluid comprising water containing divalent metal ions, a gelling agent, a borate crosslinking agent and an environmentally benign sequestering agent, and then introducing the treating fluid into the subterranean zone.