Low-temperature-resistant fracturing fluid for oil exploitation and preparation method of fracturing fluid
A technology for oil exploitation and low temperature resistance, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., and can solve problems such as difficult fracturing, poor low temperature resistance of fracturing fluid, and rapid decrease in sand-carrying capacity of fracturing fluid, etc. , to achieve excellent low temperature resistance, good shear resistance, and suitable for large-scale application
Inactive Publication Date: 2015-08-26
无棣华信石油技术服务有限公司
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Abstract
The invention relates to a low-temperature-resistant fracturing fluid for oil exploitation and a preparation method of the fracturing fluid, and belongs to the technical field of reservoir fracturing improvement for an oil gas well. The fracturing fluid comprises components in parts by weight as follows: 0.5-2 parts of cellulase, 2-8 parts of acrylamide, 1-5 parts of sulfosalicylic acid triethanolamine ester, 1.5-2 parts of fenugreek gum, 0.2-1.8 parts of guar gum, 0.6-2.5 parts of a bactericide, 0.2-0.8 parts of polyacrylamide, 2-5 parts of sodium bicarbonate, 1-3 parts of sodium citrate, 1-5 parts of demulsifire N-220 series, 2-10 parts of ethanol and 150-180 parts of water. The low-temperature-resistant fracturing fluid has good compatibility with a formation core and a fluid, and facilitates formation fracture; the fracturing fluid has excellent low-temperature-resistant effect, still has good sand carrying capacity at a lower temperature, has good anti-shearing performance, can break gel after construction and flows back quickly.
Application Domain
Drilling composition
Technology Topic
Citrate sodiumChemistry +16
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