摘要
高含硫气藏在开发过程,随着压力的下降,必然会发生元素硫沉积,堵塞孔道,影响产能。根据元素硫溶解度与压力关系,利用稳定渗流理论,建立了元素硫析出的沉积模型。在对水平井流态分析的基础上,预测了高含硫气藏直井和水平井在开采初期,其含硫饱和度在不同产能下、不同井距处随时间的变化规律,为高含硫气藏科学合理开发,提供了一定的依据。
Element sulphur deposition,channel plugging and productivity reduction consequentially occur in the development of high sour gas fields as pressure drops.In terms of the relationship between element sulphur solubility and pressure,the depositional models of element sulphur separation are established by means of stable percolation theory.Based on the analysis of flow regime of horizontal well,variation of both vertical and horizontal wells in high sour gas fields in early production period and the acid saturation in different productivity and different well spacing are predicted.The research provides a definite evidence for scientific and reasonably developing high sour gas reservoir.
出处
《天然气勘探与开发》
2007年第1期54-57,共4页
Natural Gas Exploration and Development
关键词
高含硫气藏
元素硫沉积
沉积模型
high sour gas reservoir,element sulphur deposition,sedimentation model,reasonable development
