[1]施英,刘建仪,李光明,等.高含硫气藏H2S含量对凝析气相态的影响[J].新疆石油地质,2019,(04):456.[doi:10.7657/XJPG20190409]
 SHI Ying,LIU Jianyi,LI Guangming,et al.Influences of H2S Content on Condensate Gas Phases in High Sulfur Gas Reservoirs[J].Xinjiang Petroleum Geology,2019,(04):456.[doi:10.7657/XJPG20190409]
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高含硫气藏H2S含量对凝析气相态的影响()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2019年04期
页码:
456
栏目:
出版日期:
2019-07-23

文章信息/Info

Title:
Influences of H2S Content on Condensate Gas Phases in High Sulfur Gas Reservoirs
文章编号:
1001-3873(2019)04-0456-04
作者:
施英1刘建仪2李光明1李惠2缪津津1唐丹1
(1.中国石油 塔里木油田分公司 塔中油气开发部,新疆 库尔勒 841000;2.西南石油大学 石油与天然气工程学院,成都 610500)
Author(s):
SHI Ying1 LIU Jianyi2 LI Guangming1 LI Hui2 MIAO Jinjin1 TANG Dan1
(1.Tazhong Oil and Gas Development Department, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China; 2.School of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China)
关键词:
H2S含量相态实验高含硫气藏露点压力反凝析油量
Keywords:
H2S content phase experiment high sulfur gas reservoir dew point pressure anti-condensate oil volume
分类号:
TE372
DOI:
10.7657/XJPG20190409
文献标志码:
A
摘要:
针对塔中Ⅰ号气田Ⅱ区凝析气井中H2S含量差异较大这一现象,提出了含H2S的高压物性实验评价方法。向现场分离气中加入不同量的纯H2S气体,将现场凝析油与该气体以恒定生产气油比复配获得不同H2S含量的样品,在地层温度下进行实验,研究不同H2S含量对凝析气相态特征参数的影响。研究表明,H2S含量增加,井流物中CO2,N2,C1—C5和C6+含量减小;露点压力呈线性降低,该样品的H2S含量每增加1%,露点压力下降0.67 MPa;反凝析油饱和度基本不变,但反凝析油析出时间推迟,凝析油采收率和天然气采收率都下降。这是因为H2S是一种较好的油气混相溶剂,降低了混相压力,致使露点压力降低、凝析油析出推迟,说明H2S的存在不利于凝析气的开采。
Abstract:
Aiming at the large differences of H2S content in the condensate gas wells in District Ⅱof Gas Field Ⅰof Tazhong area, a high-pressure physical-property experimental evaluation method is proposed. Different amounts of pure H2S gas were added to the on-site separated gas sample, and the on-site condensate oil sample was mixed with the gas sample at a constant produced gas-oil ratio and the samples with different H2S contents were obtained. The experiment was carried out at the formation temperature and the influences of different H2S contents on condensate gas phases were studied. The results show that when H2S contents increase, the contents of CO2, N2, C1—C5 and C6+ in the well fluid decrease; the dew point pressure shows a linear decrease and will decrease by 0.67 MPa every time when the H2S content of the sample increases by 1%; the anti-condensate oil saturation is basically the same, but the precipitation time of the anti-condensate oil is delayed, and the recovery factors of condensate oil and natural gas are both reduced. This is because H2S is a good oil-gas miscible solvent, which can reduce miscible pressure and result in a decrease in dew point pressure and a delay of the condensate oil precipitation, indicating that the presence of H2S is not conducive to the exploitation of condensate gas wells
更新日期/Last Update: 2019-07-23