海上油田用清水剂制备及应用研究
Research on water clarifier synthetizing and field application in offshore oilfield
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- 引用格式:
-
石华前,黄孟,张颖,邵显华,张震,田德道,颜万鑫,孙伶俐.海上油田用清水剂制备及应用研究[J].天然气与石油,2023,41(4):107-112.doi:10.3969/j.issn.1006-5539.2023.04.016
SHI Huaqian, HUANG Meng, ZHANG Ying, SHAO Xianhua, ZHANG Zhen, TIAN Dedao, YAN Wanxin, SUN Lingli.Research on water clarifier synthetizing and field application in offshore oilfield[J].Natural Gas and Oil,2023,41(4):107-112.doi:10.3969/j.issn.1006-5539.2023.04.016
- DOI:
- 10.3969/j.issn.1006-5539.2023.04.016
- 作者:
- 石华前 黄孟 张颖 邵显华 张震 田德道 颜万鑫 孙伶俐
SHI Huaqian, HUANG Meng, ZHANG Ying, SHAO Xianhua, ZHANG Zhen, TIAN Dedao, YAN Wanxin, SUN Lingli
- 作者单位:
- 中海油(天津)油田化工有限公司, 广东 惠州 516086
CNOOC (Tianjin) Oilfield Chemical Co., Huizhou, Guangdong, 516086, China
- 关键词:
- 清水剂;DTC;除油
Water clarifier; DTC; Oil removal
- 摘要:
为开发性能优异的二硫代氨基甲酸盐(Dithiocarbamate,DTC)清水剂产品,提升海上油田水处理能力,在室内分别采用有机胺中间体(YF-02)、聚醚胺(T-403)及四乙烯五胺在碱性条件下,用CS2改性得到3种DTC清水剂NQ-101、NQ-102和NQ-103，并对3种DTC清水剂进行了红外光谱表征,在油田现场与在用清水剂Q-30A进行了瓶试对比,同时对性能优异的产品进行了现场中试和常规应用。结果显示,3种DTC清水剂与在用清水剂Q-30A的性能排序为:NQ-101>Q-30A>NQ-103>NQ-102;对NQ-101进行现场中试时,2个旋流气浮处理装置(Compact Flotation Unit,CFU)出口水中含油浓度(OIW)平均值分别由20.1 mg/L和17.5 mg/L降至 12.9 mg/L 和11.2 mg/L,清水效果明显优于Q-30A的清水效果;在进行油田提产及NQ-101注入点后移时,外排水OIW仍保持在20 mg/L内,满足现场生产要求。对生产流程中各种离子进行检测,验证了DTC清水剂的作用机理；常规应用发现,NQ101生产流程稳定,现场应用效果良好。通过清水剂合成和现场应用,成功开发出了性能优异的DTC清水剂产品,有效提升了海上石油平台含油污水处理能力。
In order to improve the water treatment capacity in offshore oilfield, a Dithiocarbamate (DTC) water clarifier product with good performance needs to be developed. This research synthetized three DTC water clarifiers as NQ-101, NQ-102 and NQ-103 by modifying YF-02, T-403 and tetraethylenepentamine(TEPA) with CS2 in laboratory alkaline condition. The research characterized these three DTC water clarifiers with IR spectroscopy, compared their bottle test results with presently used water clarifier Q-30A in the oil field, and carried out on-site pilot test and routine field application for the product having the best performance. The results show that the performance ranking of all 4 water clarifiers is NQ-101＞Q-30A＞NQ-103＞NQ-102. When implementing on-site pilot test and application of NQ-101, the Oil in Water (OIW) discharging from the two Compact Flotation Units(CFU) CFU-A and CFU-B decreased from 20.1 mg/L and 17.5 mg/L to 12.9 mg/L and 11.2 mg/L, clearly showing that NQ-101 has better performance than Q-30A. After increasing field production and moving back injection point of NQ-101, the OIW of overboard discharge is still under 20 mg/L, meeting the requirements of field production. Furthermore, the mechanism of DTC water clarifier actions was proven by detecting every kind of ion. When NQ-101 was routinely applied in the oilfield, the production process is stable and the result is consistently good. This research successfully developed a DTC water clarifier with high performance through synthetizing and field application, which improved oily wastewater treatment capacity in offshore oilfield.
