Modified guanidine gum fracturing fluid as well as preparation method and application thereof

Abstract

The invention relates to a modified guanidine gum fracturing fluid as well as a preparation method and an application thereof. The fracturing fluid contains nano materials, wherein the nano materials comprise MgC2O4, Al(OH)3, gamma-Al2O3, SiO2, TiO2 and ZnO; the particle sizes of the nano materials are 1-100nm; the specific surface area is 9-550m<2> / g; the guanidine gum is hydroxypropyl (HPG) and carboxymethyl hydroxypropyl (CMHPG); and the mass fraction is 0.1-1.5%. The adopted nano materials and dispersing aids are nontoxic and environment-friendly materials, secondary pollution is not caused, the nano materials are dispersed into the dispersing aids in advance, transportation and operation of superfine nano powder materials applied to an oil field are facilitated, the dispersing method is simple, and strong in field operability, has a broad application prospect in fracturing production stimulation of a high-temperature deep well in exploration and development of low-permeability oil and gas fields.

Description

technical field [0001] The invention relates to the field of guar gum fracturing fluid, in particular to a modified guar gum fracturing fluid containing nanomaterials and a preparation method and application thereof. Background technique [0002] Fracturing fluid is the liquid used in the process of reservoir stimulation and stimulation. A fracturing fluid with good performance should meet the following requirements: high viscosity, low friction, low fluid loss, no damage to the formation, wide source of raw materials, low cost, and simple preparation, etc. [0003] Guar gum polymer molecules are rich in hydroxyl groups, have good water solubility and cross-linking properties, and are widely used as fracturing thickeners in oil and gas fields at home and abroad. The application ratio of guar gum fracturing fluid system is over 90%. [0004] However, in recent years, guar gum resources in the international market have become tighter, and prices have continued to rise sharpl...

AI Technical Summary

Problems solved by technology

[0005] At present, the dispersion method of nanomaterials in the modified guar gum fracturing fluid system and the application of nanomaterials in the modified guar gum fracturing fluid system have not been reported in China.