高含硫气藏单质硫溶解度测试方法及预测模型

针对高含硫气藏单质硫溶解度测量准确度低的问题,基于溶剂溶解原理,建立高含硫气藏单质硫溶解度测试实验装置及实验方法,实现了某气藏含硫气样中的单质硫溶解度的测定.研究结果表明:高含硫气藏地层温度为40.0～98.9℃,地层压力为15.0～49.8 MPa,其单质硫标准状况下的溶解度为0.001～0.968 g/m3;单质硫...

Testing Method and Prediction Model of Elemental Sulfur Solubility in Sour Gas Reservoirs

To address the problem of low accuracy in measuring the solubility of elemental sulfur in sour gas reservoirs, an experimental device and experimental method for testing the elemental sulfur solubility in sour gas reservoirs were established based on the solvent dissolution principle to determine the solubility of elemental sulfur in sour gas sample of a gas reservoir. The results of the study showed that the solubility of elemental sulfur in sour gas reservoir was 0.001 to 0.968 g/m³ under standard conditions at a formation temperature of 40.0 to 98.9 ℃ and a formation pressure of 15.0 to 49.8 MPa; the solubility of elemental sulfur was positively correlated with temperature and pressure, specifically increasing with the increase of temperature and pressure; based on the Chrastil semi-empirical model, a new model was established to calculate the solubility of elemental sulfur; the comparison of various models indicated that the new model was more accurate, with an average error of 1.79%. The study results provide important basic data and research method for the phase state and sulfur deposition control of sour gas reservoirs.