新疆石油地质

新疆石油地质 ›› 2011, Vol. 32 ›› Issue (2): 150-152.

• 油藏工程 • 上一篇    下一篇

升深2-1区块天然气水合物生成实验与预测模型

杨树人1, 彭朋1, 彭元2   

  1. 1.东北石油大学石油工程学院,黑龙江大庆 163318;
    2.中国石油管道公司大庆输油气分公司,黑龙江大庆 163318
  • 收稿日期:2010-09-06 发布日期:2020-08-11
  • 作者简介:杨树人（1963-）,男,黑龙江绥化人,教授,博士,油气井工程,（Tel）13089050099（E-mail）dqyangsr@163.com.

Gas Hydrate in Shengshen 2-1 Block: Forming Experiment and Prediction

YANG Shu-ren1, PENG Peng1, PENG Yuan2   

  1. 1. College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
    2. Daqing Oil & Gas Transportation Company, Pipeline Company, PetroChina, Daqing, HeiLongjiang 163318, China
  • Received:2010-09-06 Published:2020-08-11

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摘要： 在天然气开采及储运过程中,对水合物有效防治的难点在于对其形成临界条件的准确预测。对现有的预测模型进行比较与修正,重点考虑了天然气水合物生成时水合物相与气相及富水相的平衡,建立了更加合理的天然气水合物预测模型,对其形成的临界条件进行预测。结果表明,对于一定组分的天然气,在给定压力下,就有一个对应的水合物形成温度的临界点,且天然气温度越低、压力越高,相对密度越大,越易形成水合物,计算结果与实验值最大误差为0.385%,说明该模型具有较高精度,从而为现场水合物防治工艺提供重要的理论依据。

关键词: 天然气, 水合物, 条件, 热力学模型, 预测

Abstract: The accurate prediction of the critical condition of gas hydrate formation for effective prevention is difficult. This paper compares and modifies the existing prediction models, mainly considers the equilibrium among the hydrate, gas and rich water phases while forming the gas hydrate, thus the prediction model for the gas hydrate is more reasonable based on the predicted critical condition. The results show that for a certain component of natural gas and pressure, there is a critical point of hydrate formation temperature. Moreover, if gas temperature is lower or the pressure is higher or the relative density is larger, it is much easier to form hydrate. The maximum error between the calculated results and the experiment data is 0.385%, indicating this prediction model is so high in precision that it can provide important theoretical basis for the technical design of gas hydrate prevention used in fields.

Key words: natural gas, hydrate, condition, thermodynamics model, prediction

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