High-chelating-degree liquid state boron cross-linking agent for gugnidine glue fracturing fluid
The technology of guar gum fracturing fluid and cross-linking agent is applied in the directions of drilling compositions, chemical instruments and methods, which can solve the problems of complicated preparation and high cost of cross-linking agent, and achieves high chelation degree, low cost, and high cost. small amount of effect
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Embodiment 1
[0023] Take 15g of neopentyl glycol and 10g of borax and add them to 75mL of water, and stir until the liquid is clear to make 100g of the high-chelating liquid boron crosslinking agent of the present invention. The boron crosslinking agent has no insoluble matter precipitated or frozen at minus 15°C. It is convenient for field construction of fracturing in low temperature weather, and is suitable for guar gum fracturing fluid system.
Embodiment 2
[0025] Take 20g of glyoxal and 10g of borax and add them to 70mL of water, and stir until the liquid is clear to make 100g of the high-chelating liquid boron cross-linking agent of the present invention. The boron cross-linking agent has no insoluble matter precipitation or freezing at minus 15°C, which is convenient It is suitable for guar gum fracturing fluid system for on-site construction of fracturing in low temperature weather.
Embodiment 3
[0027] Add 15g of mannose and 10g of borax into 75mL of water and stir until the liquid is clear to make 100g of the high-chelating liquid boron crosslinking agent of the present invention. The boron crosslinking agent has no insoluble matter precipitation or freezing at minus 15°C, which is convenient for low temperature Weather fracturing site construction, suitable for guar gum fracturing fluid system.
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