PHASE-TRANSITIONING FRACTURING FLUID SYSTEM FOR HYDRAULIC FRACTURING

摘要

A phase-transitioning fracturing fluid system for hydraulic fracturing. The fluid has the following components provided in weight percentages: 10-40% of a supramolecular structural unit; 0-40% of a supremolecular functional unit; 0.5-2% of a surfactant; 0-5% of an inorganic sa 0.5-2% of an oxidizing agent; 0-2% of a solubilizing agent, and a remainder of a solvent. The process of hydraulic fracturing comprises: first using a conventional fracturing fluid to create a ground fracture, and then injecting a phase-transitioning fracturing fluid into a ground stratum, or injecting the phase-transitioning fracturing fluid and another non-phase transitioning fluid into the ground stratum. A supramolecular material in the phase-transitioning fracturing fluid self-assembles to form a solid-phase material with a specific strength for propping the fracture. A construction and operation of the invention is easy, safe, and highly effective.