supramolecular biopolymer fracturing fluid

Abstract

The invention discloses a supermolecule biopolymer fracturing fluid. The supermolecule biopolymer fracturing fluid is formed by mixing 0.05 to 0.1 percent by weight of fermentation xanthan gum, 0.1 to 0.5 percent by weight of polyacrylamide, 0.05 to 0.5 percent by weight of biogum, 2 percent by weight of halogenate alkali metal salt, 0.01 percent by weight of sterilizing agent, 0.03 to 0.05 percent by weight of gel breaker and the balance of water; the fermentation xanthan gum is prepared by mixing corn starch, fish meal and soybean cake powder with xanthomonas campestris to be fermented; the biogum is a mixture of one or three of xanthan gum, guanidine gum and carboxymethylcellulose; the sterilizing agent is hexadecyl trimethyl ammonium chloride, octadecy trimethyl ammonium bromide or mixture of the hexadecyl trimethyl ammonium chloride and octadecy trimethyl ammonium bromide; the gel breaker is ammonium persulfate or sodium persulfate. The supermolecule biopolymer fracturing fluid is remarkable in viscosifying capacity, salt tolerance, cutting resistance and long-term stability.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas development, in particular to a supramolecular biopolymer fracturing fluid. Background technique [0002] The main types of fracturing fluids currently used are natural plant gum fracturing fluids, cellulose fracturing fluids, synthetic polymer fracturing fluids, viscoelastic surfactants, clean fracturing fluids, foam fracturing fluids, and active water fracturing fluids Wait for a few. The main problems are: the cost of guar gum, cellulose fracturing fluid and viscoelastic surfactant fracturing fluid is high, the supply of goods is tight, and the liquid preparation process has high requirements on water quality, and the time required for on-site construction and liquid preparation is long; Serious damage to the reservoir; active water fracturing fluid has low fracture efficiency, poor sand-carrying ability, and low development productivity; foam fracturing fluid construction eq...

AI Technical Summary

Problems solved by technology

The main problems are: the cost of guar gum, cellulose fracturing fluid and viscoelastic surfactant fracturing fluid is high, the supply of goods is tight, and the liquid preparation process has high requirements on water quality, and the time required for on-site construction and liquid preparation is long; Serious damage to the reservoir; active water fracturing fluid has low fracture efficiency, poor sand-carrying ability, and low development productivity; foam fracturing fluid has complex and expensive construction equipment and high construction costs, etc.

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