苏里格气田集输气管线内水合物预测模型的建立

HYDRATE PREDICTING MODEL OF GAS GATHERING PIPELINES IN SULIGE GAS FIELD

苏里格气田地面环境恶劣,由于温度变化很大,在集输气管线中极易形成水合物,造成集输气管线的堵塞。如何根据温度的变化精确预测管线中水合物形成的位置,从而达到优化集输气管线、防止水合物的产生,对高效开发苏里格气田具有特别重要的意义。为此,在对苏里格气田集输气管线沿程温降和沿程压降规律进行深入研究的基础上,建立了天然气水合物产生的预测模型,开发了预测水合物生成的计算机软件,并用苏里格气田实际生产数据对预测模型进行了验证,证明了模型和软件的正确性和可靠性,本成果的推广应用对优化苏里格气田采集气工艺、提高苏里格气田开发效益具有重要的意义。

Since the environment is extreme and the atmospheric temperature changes rapidly in Sulige gas field, it is easy to generate hydrate in gas gathering pipelines and plug the pipelines. It is very important for the development of Sulige gas field to predict the location where hydrate generates in the pipelines accurately by the temperature variation, optimize the gas gathering pipelines and prevent hydrate generating. According to the law of temperature and pressure drop along the gas gathering pipelines in Sulige gas field, the predicting model of gas hydrate generating is set up and the computer software to predict hydrate generating is developed. With the real operation data, the predicting model is verified, which proves the model and the software correct and reliable. It has major significance to popularize the model for optimizing the gas recovery and gathering techniques and improving the development benefit in Sulige gas field.