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本文提出以下原理:在温度、压力相同的条件下,液相组成和气相组成分别相同的两个平衡系统,混合后形成的新系统,在原温度、压力下平衡时,其液、气相的组成不变,而且气、液量分别为原两系统在该温度、压力下气、液量的和。据此原理研究出了累积计量凝析油的新方法,克服了目前在测定凝析气的液、气比值中,析出油量少时,存在的测量误差大的问题。该方法简单易行,在配有专用配件的普通天然气高压物性仪上就能进行。
In this paper, the following principles are proposed: under the condition of the same temperature and pressure, the two systems with the same liquid phase composition and gas phase composition, the new system formed after mixing, the composition of liquid and gas phase is not balanced under the original temperature and pressure Change, and gas, liquid volume, respectively, the original two systems at the temperature, pressure, gas and liquid volume and. Based on this principle, a new method for accumulating condensate oil has been developed, which overcomes the problem of large measurement error when the amount of precipitated oil is small in the current liquid-gas ratio of condensate gas. The method is simple and easy to operate and can be carried out on an ordinary natural gas high pressure apparatus equipped with special accessories.