A Simulation Method of Oilfield Viscous Polymer-Containing Oil Sludge
A technology for polymer sludge and oil field, which is applied in the simulation field of viscous polymer-containing sludge to achieve the effect of simple and reliable method and flexible adjustment.
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Embodiment 1
[0046] 1) According to the ion composition of mineralized water in Bohai S oilfield (see Table 1), prepare 5L oilfield simulated mineralized water.
[0047] 2) Weigh 1.5g of hydrophobic associative polyacrylamide, add it to the above-mentioned 5L oilfield simulated mineralized water, prepare a polymer solution with a polyacrylamide concentration of 300mg / L, and add it to 68°C in a water bath; The polyacrylamide solution was placed under a high-pressure mercury lamp for ultraviolet light degradation for 20 minutes, and then the polymer solution was sheared for 5 minutes under high-speed stirring at 5000 rpm for a total of 4 times to obtain a degraded and sheared polymer solution.
[0048] 3) Weigh 60g of Bohai S oilfield crude oil after on-site dehydration, and 0.5g of Bohai S oilfield rock minerals (see Table 3 for the ratio of each component), add them to the polymer solution after degradation and shearing, and prepare the crude oil with a concentration of 12000mg / L, rock min...
Embodiment 2
[0051] 1) According to the ion composition of mineralized water in Bohai S oilfield (see Table 1), prepare 5L oilfield simulated mineralized water.
[0052] 2) Weigh 2.0g of high molecular weight linear polyacrylamide and add it into the above 5L simulated mineralized water to prepare a polymer solution with a polyacrylamide concentration of 400mg / L, and add it to 68°C in a water bath; The polyacrylamide solution was degraded by ultraviolet light under a high-pressure mercury lamp for 15 minutes, and then the polymer solution was sheared for 5 minutes under high-speed stirring at 5000 rpm for a total of 4 times to obtain a degraded and sheared polymer solution.
[0053] 3) Weigh 40g of crude oil after on-site dehydration in Bohai S oilfield, and 1.5g of rock minerals in Bohai S oilfield (see Table 3 for the proportion of each component), and add them to the above-mentioned degraded and sheared polymer solution to prepare the crude oil with a concentration of 8000mg / L, rock min...
Embodiment 3
[0056] 1) According to the ion composition of the mineralized water in Bohai J Oilfield (see Table 2), prepare 5L oilfield simulated mineralized water.
[0057] 2) Weigh 2.5g of high molecular weight linear polyacrylamide and add it into the above 5L simulated mineralized water to prepare a polymer solution with a polyacrylamide concentration of 500mg / L, and add it to 80°C in a water bath; The polyacrylamide solution was degraded by ultraviolet light under a high-pressure mercury lamp for 10 minutes, and then the polymer solution was sheared for 5 minutes under high-speed stirring at 5000 rpm for a total of 4 times to obtain a degraded and sheared polymer solution.
[0058] 3) Weigh 30g of crude oil dehydrated on site in Bohai J Oilfield and 1g of rock minerals in Bohai S Oilfield (see Table 4 for the ratio of each component), and add them to the above degraded and sheared polymer solution to prepare a crude oil with a concentration of 6000mg / L, a mixed solution of oil, water...
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