Patent ID: 11912933
Assignee: CHENGDU UNIVERSITY OF TECHNOLOGY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for directly adding a suspension modifier into the fracturing fluid to modify the proppant in real time, comprising:
mixing the following raw materials in a proppant blender during fracturing:
0.15 to 0.5 parts by weight (pbw) of suspension modifier, 20 pbw of proppant, 0.01 pbw of release agent and 100 pbw of water; and

completing the real-time modification of the proppant with the suspension modifier;
wherein the suspension modifier comprises 1 to 2 pbw of surface hydrophobic modifier, 0.5 to 1 pbw of surfactant, 0.5 to 2.4 pbw of cosurfactant, and 3 to 3.5 pbw of water;
wherein the surface hydrophobic modifier is a siloxane compound and its composition;
wherein the surfactant is one or more combinations of alkyl polyoxyethylene ether sulfate, alkyl amidepropyl betaine, polyoxyethylene sorbitan fatty acid esters, polyethylene glycol, disodium monolauryl sulfosuccinate, sodium lauryl sulfate, potassium didodecyl phosphate, and potassium monoalkyl phosphate;
wherein the cosurfactant is one or more combinations of diisopropyl benzene peroxide, diethylenetriamine, ethylene glycol, normal propyl alcohol, isopropyl alcohol, propylene glycol, and n-butyl alcohol; and
wherein the release agent used is a grafted polyether demulsifier and the structure of the release agent is: D(PO)n(EO)mH,
wherein D is the starting group, and is one of phenolic resin, phenolic amine resin and polyamine, n is 30 to 50, and m is 90 to 120.