Organic boron delay cross-linking plant adhesive breakdown fluid

Abstract

The invention relates to a novel organic boron cross linking agent for fracturing and fracturing fluid for deferring cross bonding vegetable glue, wherein the preparation method comprises the steps of, reacting sodium borate with multicomponent aldehydes (e.g. ethanedial), adding polyvalent alcohol amine (e.g. triethanolamine) for complete reaction, forming component an of organic boron cross linking agent, and organic boron component B of 20-30% caustic soda liquor solution, mixing component an and B in the proportion of 100:5-100:15 to form the organic boron cross linking agent. While the organic boron deferring cross bonding vegetable glue fracturing fluid comprises vegetable glue polymer, pH regulator, glue breaking agent and organic boron cross linking agent.

Description

[0001] Involved areas

[0002] The invention relates to a novel organic boron cross-linking agent and delayed cross-linking vegetable gum fracturing fluid for oil field fracturing. Background technique

[0003] At present, water-based fracturing fluids are commonly used in oilfield fracturing stimulation. However, conventional inorganic borate crosslinking agents do not have delayed crosslinking effect, poor temperature resistance (less than 93°C), and high frictional resistance, while organic zirconium and organic titanium crosslinking agents are difficult to break and cause serious damage. Conventional organoboron crosslinking agents do not have adjustable delayed crosslinking time and cannot meet the needs of oilfield fracturing operations. Contents of the invention

[0004] The object of the present invention is to address the deficiencies of the prior art, and provide an organoboron crosslinking agent and an organoboron crosslinking plant gum fracturing fluid system th...