This study presents a comparative computational examination of different cubic equations of state (EoS) on hydrate inhibition fluid systems involving real reservoir fluids. Two gas hydrate inhibitors (Monoethylene glycol – MEG and methanol) were considered alongside 4 cubic EoS namely; Cubic-Plus-Association (CPA) EoS coupled with Infochem mixing rules, Soave-Redlich-Kwong (SRK) EoS coupled with the Huron-Vidal (HV) mixing rule, Peng Robinson EoS coupled with the HV mixing rule and the Predictive-Soave-Redlich-Kwong EoS with the PSRK-type mixing rule. Pressure-Temperature (PT) – flash calculations were carried out using Multiflash^TM software (version 6.1) and the obtained results were compared with experimental data from various literature. The tested Cubic EoS successfully modelled the distribution of water, a hydrate inhibitor and hydrocarbons in the complex mixtures at different conditions with the CPA EoS performing best. The PSRK EoS produced results farthest from experimental data.

这项研究提出了涉及实际储层流体的水合物抑制流体系统的不同立方状态方程（EoS）的比较计算研究。两种气体水合物抑制剂（单乙二醇– MEG和甲醇）与4立方EoS一起被认为是：立方加关联（CPA）EoS与Infochem混合规则相结合，Soave-Redlich-Kwong（SRK）EoS与Huron-Vidal（HV）混合规则相结合，Peng Robinson EoS与HV混合规则和Predictive-Soave相结合-Redlich-Kwong EoS具有PSRK型混合规则。压力-温度（PT）–使用Multiflash ^TM进行闪光计算软件（6.1版），并将获得的结果与来自各种文献的实验数据进行比较。经过测试的立方EoS成功地模拟了水，水合物抑制剂和碳氢化合物在不同条件下在复杂混合物中的分布，而CPA EoS表现最佳。PSRK EoS产生的结果离实验数据最远。