High-temperature sea water-base fracturing liquid suitable for formation temperature of 160 DEG C and preparation method thereof
A technology of high-temperature seawater and base pressure, applied in chemical instruments and methods, compounds of group 4/14 elements of the periodic table, and drilling compositions, can solve problems such as difficulty in meeting the requirements of fracturing construction, and achieve reduction Effects of injury, good tolerance, good complexation
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[0032] Example 1
[0033] High temperature seawater based fracturing fluid
[0034] Raw materials (in parts by weight):
[0035] 96 parts of sea water;
[0036] Thickener (hydroxyethyl carboxymethyl sulfonate guar gum) 0.5 parts;
[0037] Chelating regulator (a mixed aqueous solution of ethylenediaminetetraacetic acid and hydroxyethylidene diphosphoric acid, in which the weight percentage of ethylenediaminetetraacetic acid is 21%, the weight percentage of hydroxyethylidene diphosphate is 32%, and the balance is water, Both ethylenediaminetetraacetic acid and hydroxyethylidene diphosphate were purchased from Beijing Dewei Na Biotechnology Co., Ltd.) 1.5 parts;
[0038] Temperature stabilizer (mixed aqueous solution of hydroxylamine hydrochloride and sodium thiosulfate, in which the weight percentage of hydroxylamine hydrochloride is 12%, the weight percentage of sodium thiosulfate is 21%, the balance is water, hydroxylamine hydrochloride and sodium thiosulfate are purchased from Beijing...
Example Embodiment
[0067] Example 2
[0068] High temperature seawater based fracturing fluid
[0069] Raw materials (in parts by weight):
[0070] 97.5 parts of sea water;
[0071] Thickening agent (hydroxyethyl carboxymethyl sulfonate guar gum) 0.75 parts;
[0072] Chelating regulator (2-phosphonic acid butane-1,2,4-tricarboxylic acid and triethylenetetraamine hexaacetic acid hexasodium mixed aqueous solution, of which 2-phosphonic acid butane-1,2,4-tricarboxylic acid The weight percentage of acid is 8%, the weight percentage of hexasodium triethylenetetraamine hexaacetate is 12%, the balance is water, 2-phosphonic acid butane-1,2,4-tricarboxylic acid and triethylenetetramine Hexasodium hexaacetate was purchased from Beijing Dewei Na Biotechnology Co., Ltd.) 0.8 parts;
[0073] Temperature stabilizer (mixed aqueous solution of hydrazine hydrate and sodium sulfite, wherein the weight percentage of hydrazine hydrate is 15%, the weight percentage of sodium sulfite is 5%, and the balance is water. Both hyd...
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