Viscosity reducing composition and method for reducing viscosity of viscous oil
A composition and viscosity reduction technology, which can be used in drilling compositions, chemical instruments and methods, and earth-moving drilling and mining, etc., and can solve problems such as limited scope of use
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Embodiment 1
[0048] This example is used to illustrate the viscosity-reducing composition and the method for reducing the viscosity of heavy oil of the present invention.
[0049] (1) Preparation of viscosity-reducing composition: Add 0.05g of ethylene-vinyl acetate copolymer (Mitsui, EVA220, VA content 28% by weight, melt index 150g / 10min) to 40g of Zhongyuanwen Yilian thin oil (50°C When the viscosity is 10.6mPa·s, the same below), stir at 50°C for 30 minutes to dissolve. Then 1.5 g of 4-nonylphenol (Beijing Sinopharm Reagent Group, chemically pure) and 0.1 g of 4-dodecylbenzenesulfonic acid (Beijing Sinopharm Reagent Group, chemically pure) were added to obtain viscosity reducing composition A1.
[0050] (2) Thick oil viscosity reduction: add 40g of viscosity reducing composition A1 to 20g of Zhongyuan heavy oil solid (viscosity at 130°C is 1.66×10 4 mPa·s, the same below). Stir and dissolve at 100° C. for 4 hours to obtain a mixed oil.
[0051] Measure the dynamic viscosity of the m...
Embodiment 2
[0053] This example is used to illustrate the viscosity-reducing composition and the method for reducing the viscosity of heavy oil of the present invention.
[0054] (1) Preparation of viscosity-reducing composition: add 0.05 g of surfactant TX-10 (purchased from Haian Petrochemical Plant) to 30 g of Zhongyuan Huxianglian thin oil (viscosity at 50°C is 6.0 mPa·s, the same below) , stirred at 25 °C for 5 min to dissolve. Then 0.6 g of 4-dodecylphenol (Beijing Sinopharm Reagent Group, chemically pure) and 0.1 g of 4-dodecylbenzenesulfonic acid (Beijing Sinopharm Reagent Group, chemically pure) were added to obtain the viscosity-reducing composition A2.
[0055] (2) Thick oil viscosity reduction: Add 30 g of viscosity reducing composition A2 to 30 g of Inner Mongolia heavy oil solid (viscosity at 50°C is 1.71×10 4 mPa·s, the same below). Stir and dissolve at 100° C. for 4 hours to obtain a mixed oil.
[0056] Measure the dynamic viscosity of the mixed oil at 50°C. The mixed ...
Embodiment 3
[0058] This example is used to illustrate the viscosity-reducing composition and the method for reducing the viscosity of heavy oil of the present invention.
[0059] (1) Preparation of viscosity reducing composition: the polycondensate of chlorinated paraffin-naphthalene (based on the total amount of polycondensate, the molar content of chlorinated paraffin in the polycondensate is 66mol%, and the polycondensate of chlorinated paraffin-naphthalene The weight-average molecular weight is 6000, purchased from Exxon Company (Paraflow brand) 0.01g, added to 40g of Zhongyuanwen Yilian thin oil, stirred at 50°C for 30 hours to dissolve. Add 0.6 g of 4-dodecylphenol (Beijing Sinopharm Reagent Group, chemically pure) and 0.05 g of heavy alkylbenzenesulfonic acid (Nanjing Jintong Petrochemical Plant) to obtain viscosity-reducing composition A3.
[0060] (2) Thick oil viscosity reduction: add 40 g of viscosity reducing composition A3 to 20 g of Zhongyuan heavy oil solids, stir and disso...
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