Variation of Crude Oil Physical Properties and Oil Recovery of Natural Gas Flood Under Different Pressures
Variation of Crude Oil Physical Properties and Oil Recovery of Natural Gas Flood Under Different Pressures
复制标题
不同压力下天然气驱原油物性变化及采收率
DOI：
10.1080/10916466.2016.1149488
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发表时间：
2016-03
影响因子：
1.5
通讯作者：
Jiacheng Yan
中科院分区：
文献类型：
--
作者：
Mingchen Ding;Yefei Wang;Wei Wang;Shenglong Shi;Jiacheng Yan
摘要在气驱过程中，由于气体的溶解和抽出，原油的物性（包括原油的体积和粘度）会发生很大的变化。首先，测定并比较了天然气在油和盐水中的溶解度。同时，对所得到的油膨胀和降粘进行了实验测试。第二，通过萃取实验研究了由于萃取而引起的原油粘度增加。最后，研究了不同压力下天然气和富丙烷天然气驱油的采收率。结果表明，天然气在原油中的溶解度是在盐水中的几十倍。注天然气过程中原油物性的变化主要表现为天然气溶于原油引起的体积膨胀和粘度降低，而采出过程引起的原油体积收缩和粘度增加并不明显。天然气驱采收率随注入压力和气体在油中溶解度的增加而线性增长，但在55 MPa时采收率仍低于90%，表明55 MPa时为非混相驱。天然气中添加丙烷有利于提高原油采收率，达到增注目的。
ABSTRACT For the gas flood process, crude oil physical properties including oil volume and viscosity would be greatly changed resulting from gas solution and extraction. First, solubility of natural gas in oil and brine was measured and compared. Meanwhile, the resulting oil expansion and viscosity reduction were experimentally tested. Second, oil viscosity increase due to extraction was studied by extraction experiments. Finally, oil recovery of natural gas and propane-enriched natural gas flood was studied under different pressures. Results show that solubility of natural gas in oil is dozens of times of that in brine. Variation of crude oil physical properties during natural gas injection mainly includes the remarkable volume expansion and viscosity reduction caused by gas dissolution into oil, and the oil volume shrinkage and viscosity increase caused by extraction are not so significant. The oil recovery of natural gas flood grows linearly with increased injection pressure and gas solubility in oil, but is still less than 90% even at 55 MPa, which indicates immiscible flood at 55 MPa. Addition of propane to natural gas is proved to be helpful for enhancing oil recovery and achieving miscibility.
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DOI：
--
发表时间：
2007
期刊：
Special Oil & Gas Reservoirs
影响因子：
--
作者：
Sun Zhong-xin
通讯作者：
Sun Zhong-xin
影响因子：
7.5
作者：
Yuan-Jian Lin
通讯作者：
Yuan-Jian Lin
DOI：
10.2118/17355-pa
发表时间：
1990-08
期刊：
Spe Reservoir Engineering
影响因子：
--
作者：
R. G. Nagel;B. E. Hunter;J. K. Peggs;D. K. Fong;E. Mazzocchi
通讯作者：
R. G. Nagel;B. E. Hunter;J. K. Peggs;D. K. Fong;E. Mazzocchi
DOI：
10.1080/15567036.2013.816804
发表时间：
2013-10
期刊：
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
影响因子：
--
作者：
M. Ding;X. Yue;H. Zhao;W. Zhang
通讯作者：
M. Ding;X. Yue;H. Zhao;W. Zhang
影响因子：
7.4
作者：
Li, Zeya;Gu, Yongan
通讯作者：
Gu, Yongan