摘要
高含硫气藏是一种非常规的气藏,其物质平衡方程式与常规气藏物质平衡方程式有着一定的差异。高含硫气藏存在元素硫的析出与沉积,而常规气藏物质平衡方程通式并没有考虑硫沉积现象,所以不能完整地描述和预测高含硫气藏的开发动态。在考虑硫沉积等多种因素的基础上,从物质的量守恒角度推导出了高含硫气藏的物质平衡方程通式及压降方程通式。最后,利用新建的高含硫气藏物质平衡方程通式计算出某一含硫气藏的地质储量及压降变化,分析引起误差的原因,验证了模型的正确性和可靠性,为科学、安全、高效开发高含硫气田提供了一定的理论依据。
The gas reservoir with high sulfur content is a type of unconventional gas reservoirs. There are some differences between the gas reservoir with high sulfur content and that without sulfur. There are the separation and deposition of sulfur in this type of gas reservoir. But the sulfur deposition do not be considered in the genaral expression of material balance equation of conventional gas reservoirs, which can not be used to describe and predict the production performance of gas reservoir of high sulfur content. Wherefore it is of an importance significance to accurately derive the general expression of material balance equation of high sulfer content. On the basis of considering sulfur deposition, the general expression of material balance equation of gas reservoirs with high sulfur content and pressure decline formula are derived from mole conservation.Then geological reserves and pressure decline for the gas reservoirs with high sulfur content are calculated by means of the new equations and the cause of error is analyzed. Finally, the accuaracy and reliability of this method have been verified, which provides some theoretical reference for scientific development of the gas reservoirs of high sulfer content.
出处
《断块油气田》
CAS
2008年第3期81-83,共3页
Fault-Block Oil & Gas Field
关键词
气藏
高含硫
硫沉积
物质平衡
压降方程
gas reservoirs, high sulfur content, sulfur deposition, material balance, pressure decline formula.
