利用超临界CO2解除地层石蜡堵塞实验研究
TE357; 采用室内模拟实验装置研究超临界CO2解除地层石蜡堵塞的可行性,并分析超临界CO2解堵石蜡的作用机制及驱替参数对解堵效果的影响规律.结果表明:超临界态CO2对石蜡具有溶胀和冲刷双重作用,其解堵效果远好于气态和液态CO2;随着驱替时间延长,解堵效果逐渐变好,超过一定时间后,岩心渗透率不再增加;解堵效果随着温度和驱替速度的增大而变好;随着压力的升高,解堵效果先增强后减弱,存在一个最佳解堵压力....
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| Published in | 中国石油大学学报（自然科学版） Vol. 40; no. 3; pp. 107 - 112 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国石油大学非常规油气与新能源研究院,山东青岛,266580%中石化中原石油工程有限公司钻井二公司,河南濮阳,457001%南京汽轮电机(集团)有限责任公司,江苏南京,210000
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1673-5005 |
| DOI | 10.3969/j.issn.1673-5005.2016.03.014 |
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| Summary: | TE357; 采用室内模拟实验装置研究超临界CO2解除地层石蜡堵塞的可行性,并分析超临界CO2解堵石蜡的作用机制及驱替参数对解堵效果的影响规律.结果表明:超临界态CO2对石蜡具有溶胀和冲刷双重作用,其解堵效果远好于气态和液态CO2;随着驱替时间延长,解堵效果逐渐变好,超过一定时间后,岩心渗透率不再增加;解堵效果随着温度和驱替速度的增大而变好;随着压力的升高,解堵效果先增强后减弱,存在一个最佳解堵压力. |
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| Bibliography: | super-critical carbon dioxide; formation paraffin deposit; plug removing; swelling; influence factors SUN Xue1 , NI Hongjian1 , WANG Xueying1, WANG Ruihe1 , YU Zhanmiao2 , ZHOU Tong3 （ 1. Research Institute of Unconventional Oil ＆ Gas and New Energy, China University of Petroleum, Qingdao 266580, China; 2. The No. 2 Drilling Company of Zhongyuan Oilfield Service Corporation, SINOPEC, Puyang 457001, China ; 3. Nanjing Turbine Motor （Group） Company Limited, Nanjing 210000, China） 37-1441/TE The feasibility of removing formation paraffin deposits by super-critical carbon dioxide was studied through indoor simulation test apparatus. The mechanism of super-critical carbon dioxide removing paraffin deposits and the influence of flooding parameters were analyzed. Experimental results show that the plug removing performance of super-critical carbon dioxide is much better than gaseous and liquid carbon dioxide due to the combined effects of swelling and flooding of super-critical carbon dioxide on the paraffin. The plug |
| ISSN: | 1673-5005 |
| DOI: | 10.3969/j.issn.1673-5005.2016.03.014 |