中文摘要：

摘要：针对目前国内外缺乏直接检测高温高压地层水离子含量设备的问题，设计了测试高温、高压条件下实际气藏流体中地层水离子含量及结垢量的静态实验。采用实际气藏流体进行了高温高压PVT分析及离子含量检测实验，测试不同条件下水中气、气中水含量及地层水离子组成，确定地层流体结垢量，综合研究了高温高压地层水相态变化和离子含量的变化规律及其内在联系。结果表明：随地层压力降低，天然气在水中的溶解度降低，水的蒸发加剧，地层水矿化度升高，结垢趋势增加。一定的低压高温条件下，地层流体中的无机盐结垢且结垢量随压力降低而增加。随温度降低而减小；实际地层流体结垢量比脱气地层水低且结垢量随温度压力的变化趋势更为明显。

英文摘要：

To solve the lack of equipment that can directly measure formation water＇s ion content in the condition of high temperature and high pressure at home and abroad. The static experiment for test ion content and scaling amount in formation fluid under the condition of high temperature and high pressure was made. PVT analysis for the actual gas field＇s fluid of high temperature and high pressure and ion content detection experiments were carried on in this paper. Water content in gas, amount of gas dissolved in water and the icon formation content in water are tested, scaling amount of formation fluid was firmed. The change rule of gas and water＇s phase state and ionic content have been studied comprehensively, the internal relation influence was analyzed. The results show that quantity of dissolved gas in water reduces with formation pressure decreasing, the evaporation water to natural gas formation intensifies, electrolyticion＇s concentration and salinity increases, and the scaling trends increase. In certain low pressure and high temperature conditions, the inorganic salt in formation fluid began scaling. The scaling quantity increases with experiment pressure increasing, and decreases with the experimental temperature decreasing. Scaling quantity of the under actual production condition is lower than that of the degassing formation water, and change trend of scaling quantity with temperature and pressure is more obvious.