新型水合物抑制剂Z-6的研究及应用
Research and Application of A New Hydrate Inhibitor Z-6
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- 引用格式:
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张荣甫,黄祥峰.新型水合物抑制剂Z-6的研究及应用[J].天然气与石油,2016,34(6):0.doi:
Zhang Rongfu, Huang Xiangfeng.Research and Application of A New Hydrate Inhibitor Z-6[J].Natural Gas and Oil,2016,34(6):0.doi:
- DOI:
- 作者:
- 张荣甫 黄祥峰
Zhang Rongfu, Huang Xiangfeng
- 作者单位:
- 中国石化华北油气分公司采气二厂
Sinopec North China Oil & Gas Company 2nd Gas Recovery Plant
- 关键词:
- 新型水合物抑制剂；甲醇；预防堵；安全环保
New hydrate inhibitor, Methanol; Plug prevention; Safety and environmental protection
- 摘要:
- 由于冬季环境温度较低,采气管线、井筒常常发生水合物堵塞现象。目前,东胜气田主要利用甲醇来抑制水合物的生成。但由于甲醇具有毒性,易挥发,给安全、环保带来了巨大压力。亟需寻求有效的水合物防控剂,既要满足东胜气田生产需求,提高其开发效益,又要兼具环保、安全的特点,对人体和环境不造成伤害。为此,对国内外水合物抑制技术进行了大量的调研,在此基础上,开展了无毒新型水合物抑制剂Z-6的研究及应用。结合气井实际生产情况,现场采用连续自力式滴注工艺,通过不断优化加注制度,完全能够满足气井的生产需要。采用新型防控剂滴注工艺后,东胜气田生产时率达到95,较同期增长7个百分点；单次解堵用时7 h,较前期减少近半,药剂用量仅为同期甲醇用量的30,节约了成本。同时,该防控剂减缓了井下管柱的腐蚀速度,其缓蚀率达到80。研究表明，该新型水合物抑制剂在水合物预防和解堵效果上能够替代甲醇,且满足现场生产及安全环保要求。
The low temperature of winter leads to hydrate blockage in gas pipeline and wellbore. Methanol is often used to prevent hydrate formation in Dongsheng gas field. It has brought serious effect on environmental protection because of toxicity and volatility. Therefore, it is necessary to find an effective hydrate inhibitor to meet both the production and environmental protection and safety in Dongsheng gas field. For this reason, research and field application of a new nontoxic hydrate inhibitor Z-6 has been launched based on the research on the inhibition technology of hydrate at home and abroad. In consideration of the practical production of gas well, continuous drip process of self-reliance type is applied in the gas field. Application results have showed that it can completely meet the gas field production. the production rate have reached 95% and have increased 7 percentage points over the same period after the use of new non-toxic hydrate inhibitor. Single plug-release takes 7h and reduced by nearly half comparing with the previous period. The dosage of the chemicals was only 30% of methanol in the same period. The corrosion inhibition rate has been about 80%, which slows down the corrosion rate of down hole string. Results show that the prevention and plug removal effect of the new hydrate inhibitor is better than that of methanol. It meets the requirements of production and environmental protection at site.
