针对中原油田濮深18块稠油油藏特点和稠油性质,进行了稠油掺稀降黏规律和流变性室内实验研究。采用4种类型稀油对PS18-1井超稠油进行定温条件下不同掺稀比的稠油降黏实验,并将实验测得的稠油掺稀黏度数据进行拟合后得到模型参数。实验...针对中原油田濮深18块稠油油藏特点和稠油性质,进行了稠油掺稀降黏规律和流变性室内实验研究。采用4种类型稀油对PS18-1井超稠油进行定温条件下不同掺稀比的稠油降黏实验,并将实验测得的稠油掺稀黏度数据进行拟合后得到模型参数。实验结果表明:对于PS18-1超稠油,在同等条件下4种稀油中文一联稀油掺稀降黏的效果最佳;掺入的稀油量越大,混合油黏度越低,降黏效果越好;井口温度越高,需要掺入的稀油量越小。在无外加降黏剂或互溶剂时掺稀比1∶1.5时就无法实现稠稀互混。用文一联稀油对PS18-1超稠油在130℃条件下互混,掺稀比在1∶1.8以下时基本可实现完全互混,但温度下降后仍有少许块状物析出。当井口温度为40℃时,PS18-1超稠油与文一联稀油按掺稀比1∶2混合时,井口混合油黏度为249 m Pa·s,能满足生产要求。当井口温度为60℃时,PS18-1超稠油与文一联稀油按掺稀比1∶1.8混合,井口混合油黏度为356 m Pa·s,也能满足生产要求。此外,模型计算值与实验值吻合较好,具有较高的计算精度。展开更多
The effects of MgO/Al_(2)O_(3)and CaO/SiO_(2)ratios on the viscosity,break-point temperature,and viscous activation energy of a high titanium-bearing slag were studied.The results showed that both the viscosity and th...The effects of MgO/Al_(2)O_(3)and CaO/SiO_(2)ratios on the viscosity,break-point temperature,and viscous activation energy of a high titanium-bearing slag were studied.The results showed that both the viscosity and the break-point temperature of the slag decreased with the MgO/Al_(2)O_(3)ratio increasing from 0.50 to 0.65,the viscous activation energy decreased gradually,and the thermal stability became better.In addition,with an increase in CaO/SiO_(2)ratio from 1.12 to 1.22,the main viscous units in the slag depolymerized and the viscosity of slag decreased.However,the break-point temperature of slag showed an increasing tendency.The viscous activation energy decreased gradually and the thermal stability became better.The basic phase in the experimental high titanium-bearing slag was pyroxene,and its amount increased with increasing the MgO/Al_(2)O_(3)ratio while decreased with increasing the CaO/SiO_(2)ratio.展开更多
Samples of hot break tomato paste were collected from commercially produced aseptic totes after 6-11 months of storage at ambient temperature. Serum viscosity of the hot break tomato paste samples was analyzed at each...Samples of hot break tomato paste were collected from commercially produced aseptic totes after 6-11 months of storage at ambient temperature. Serum viscosity of the hot break tomato paste samples was analyzed at each sampling time and compared to the initial serum viscosity measured at the time of tomato paste manufacturing. As storage time increased, the serum viscosity of hot break tomato paste significantly decreased. After 7 months of storage, 16%-27% reduction of serum viscosity was observed in the hot break tomato paste. To evaluate effects of a heating on the serum viscosity of hot break tomato paste, the paste samples were reconstituted with water to 10° Brix, similar level of tomato solids in typical tomato sauce products. Diluted tomato paste was heated and held at 95℃ for 3 minutes and its serum viscosity was measured. After the heating, the serum viscosity of hot break tomato paste was slightly increased up to 5% of initial value, however the recovery was not significant （p 〈 0.05）.展开更多
文摘针对中原油田濮深18块稠油油藏特点和稠油性质,进行了稠油掺稀降黏规律和流变性室内实验研究。采用4种类型稀油对PS18-1井超稠油进行定温条件下不同掺稀比的稠油降黏实验,并将实验测得的稠油掺稀黏度数据进行拟合后得到模型参数。实验结果表明:对于PS18-1超稠油,在同等条件下4种稀油中文一联稀油掺稀降黏的效果最佳;掺入的稀油量越大,混合油黏度越低,降黏效果越好;井口温度越高,需要掺入的稀油量越小。在无外加降黏剂或互溶剂时掺稀比1∶1.5时就无法实现稠稀互混。用文一联稀油对PS18-1超稠油在130℃条件下互混,掺稀比在1∶1.8以下时基本可实现完全互混,但温度下降后仍有少许块状物析出。当井口温度为40℃时,PS18-1超稠油与文一联稀油按掺稀比1∶2混合时,井口混合油黏度为249 m Pa·s,能满足生产要求。当井口温度为60℃时,PS18-1超稠油与文一联稀油按掺稀比1∶1.8混合,井口混合油黏度为356 m Pa·s,也能满足生产要求。此外,模型计算值与实验值吻合较好,具有较高的计算精度。
基金The authors were specially grateful to the National Natural Science Foundation of China(Grant No.51904063)the Fundamental Research Funds for the Central Universities(N2025023).
文摘The effects of MgO/Al_(2)O_(3)and CaO/SiO_(2)ratios on the viscosity,break-point temperature,and viscous activation energy of a high titanium-bearing slag were studied.The results showed that both the viscosity and the break-point temperature of the slag decreased with the MgO/Al_(2)O_(3)ratio increasing from 0.50 to 0.65,the viscous activation energy decreased gradually,and the thermal stability became better.In addition,with an increase in CaO/SiO_(2)ratio from 1.12 to 1.22,the main viscous units in the slag depolymerized and the viscosity of slag decreased.However,the break-point temperature of slag showed an increasing tendency.The viscous activation energy decreased gradually and the thermal stability became better.The basic phase in the experimental high titanium-bearing slag was pyroxene,and its amount increased with increasing the MgO/Al_(2)O_(3)ratio while decreased with increasing the CaO/SiO_(2)ratio.
文摘Samples of hot break tomato paste were collected from commercially produced aseptic totes after 6-11 months of storage at ambient temperature. Serum viscosity of the hot break tomato paste samples was analyzed at each sampling time and compared to the initial serum viscosity measured at the time of tomato paste manufacturing. As storage time increased, the serum viscosity of hot break tomato paste significantly decreased. After 7 months of storage, 16%-27% reduction of serum viscosity was observed in the hot break tomato paste. To evaluate effects of a heating on the serum viscosity of hot break tomato paste, the paste samples were reconstituted with water to 10° Brix, similar level of tomato solids in typical tomato sauce products. Diluted tomato paste was heated and held at 95℃ for 3 minutes and its serum viscosity was measured. After the heating, the serum viscosity of hot break tomato paste was slightly increased up to 5% of initial value, however the recovery was not significant （p 〈 0.05）.
