高含硫气藏单质硫溶解度测试方法及预测模型

doi:10.3969/j.issn.1006-6535.2022.02.015

特种油气藏 ›› 2022, Vol. 29 ›› Issue (2): 104-109.DOI: 10.3969/j.issn.1006-6535.2022.02.015

高含硫气藏单质硫溶解度测试方法及预测模型

吴亚军¹, 王宁², 张广东², 张明迪¹, 莫超平²

1.中国石化西南油气分公司,四川成都 610041;
2.西南石油大学,四川成都 610500

收稿日期:2020-12-20 修回日期:2021-12-30 出版日期:2022-04-25 发布日期:2023-01-10
通讯作者: 张广东(1980—),男,高级实验师,2003年毕业于西南石油学院勘查技术与工程专业,2014年毕业于成都理工大学油气田开发工程专业,获博士学位,现主要从事油气田开发方面的研究工作。
作者简介:吴亚军(1967—),男,高级工程师,1989年毕业于成都地质学院石油地质勘查专业,2002年毕业于成都理工学院矿产普查与勘探专业,获硕士学位,现主要从事油气开发方面的研究工作。
基金资助:
国家自然科学基金“考虑液硫吸附作用的高含硫气藏地层条件气-液相对渗透率实验与计算模型研究”(51874249)

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

Wu Yajun¹, Wang Ning², Zhang Guangdong², Zhang Mingdi¹, Mo Chaoping²

1. Sinopec Southwest Oil and Gasfield Company, Chengdu, Sichuan 610041, China;
2. Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2020-12-20 Revised:2021-12-30 Online:2022-04-25 Published:2023-01-10

摘要/Abstract

摘要： 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;单质硫溶解度与温度、压力呈正相关性,随温度、压力升高而增大;基于Chrastil半经验模型,建立了计算单质硫溶解度新模型,经多种模型对比结果可知,新模型较以往预测模型精度更高,平均误差为1.79%。该研究成果对含硫气藏的相态及硫沉积防治提供了重要的基础数据和研究方法。

关键词: 高含硫气藏, 单质硫含量, 实验方法, 溶解度, Chrastil模型

Abstract: 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.

Key words: sour gas reservoir, elemental sulfur content, experimental method, solubility, Chrastil model

中图分类号:

TE135

吴亚军, 王宁, 张广东, 张明迪, 莫超平. 高含硫气藏单质硫溶解度测试方法及预测模型[J]. 特种油气藏, 2022, 29(2): 104-109.

Wu Yajun, Wang Ning, Zhang Guangdong, Zhang Mingdi, Mo Chaoping. Testing Method and Prediction Model of Elemental Sulfur Solubility in Sour Gas Reservoirs[J]. Special Oil & Gas Reservoirs, 2022, 29(2): 104-109.

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高含硫气藏单质硫溶解度测试方法及预测模型

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

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