Degradable non-aqueous gel systems

摘要

A method of treating a formation that includes exposing a region of the formation occupied by a hydrolysable gel to a hydrolyzing agent; and allowing sufficient time for the hydrolyzing agent to hydrolyze the gel. Various methods may also include the use of a swelling agent to allow for expansion of the gel.

主权项

1. A method of treating a formation, comprising:
emplacing gel components within the formation to form a hydrolysable gel therein; exposing a region of the formation occupied by the hydrolysable gel to a hydrolyzing agent; after emplacing the gel components and the formation of the hydrolysable gel, then emplacing a swelling agent into the region of the formation occupied by the hydrolysable gel, wherein the swelling agent is one or more selected from the group consisting of alcohols, ethers, and pyrrolidones; allowing the swelling agent to expand the hydrolysable gel structure; and allowing sufficient time for the hydrolyzing agent to hydrolyze the hydrolysable gel; wherein the swelling agent is emplaced into the region of the formation occupied by the hydrolysable gel after the hydrolysable gel performs a function selected from zonal isolation, loss circulation, wellbore strengthening, or formation permeability control.