Method for improving performance of fracturing fluid

Abstract

The invention relates to the technical field of oil formation hydraulic fracturing and in particular relates to a method for improving performance of a fracturing fluid. The method provided by the invention comprises the steps of adding a compound organic base into a base solution of the fracturing fluid and mixing to be uniform until pH value of the mixed liquor to be 10-12, wherein the compound organic base comprises the following components in percentage by weight: 8-12% of sodium hydroxide, 0.4-0.6% of triethanolamine, 0.15-0.25% of tetramethylammonium hydroxide and the balance of water. By adopting the method provided by the invention, after the compound organic base is added, usage amount of guanidine gum during preparation of the cracking fluid can be reduced, and residue content is low, a friction coefficient is low and flowback rate is high, so that comprehensive performance of the cracking fluid is obviously improved.

Description

technical field

[0001] The invention relates to the technical field of oil layer hydraulic fracturing, in particular to a method for improving the performance of fracturing fluid. Background technique

[0002] Reservoir hydraulic fracturing, referred to as reservoir fracturing or fracturing, is a technology developed in the 1940s to improve the seepage characteristics of oil reservoirs, and is an important technological measure for increasing production of oil and gas wells and increasing injection of water injection wells. It uses surface high-pressure pumps to inject high-viscosity liquid into the well at a displacement that greatly exceeds the absorption capacity of the formation, and then forms high pressure near the bottom of the well. After the pressure exceeds the formation stress near the bottom of the well and the tensile strength of the rock, fractures are formed in the formation. Continue to inject the fluid with proppant into the fracture, so that the fr...