普光气田气井井口产能计算方法应用

Application of computing method of wellhead deliverability in Puguang Gasfield

普光气田为超深高酸性气田。由于天然气组分的特殊性，气田开发过程中产能试井面临很多问题．给现场气井产能评价带来困难。针对普光气田多井次下井下压力计试井测试困难的情况，运用已有的测试数据建立井口产能方程，并通过试井数据建立的产能方程所确定的井口无阻流量和绝对无阻流量来评价井口产能方程。应用结果表明，普光气田井口无阻流量与绝对无阻流量线性关系较好，可以用井口产能方程计算绝对无阻流量，为气井产能研究提供一种新的方法。

Puguang Gasfieht is a super-deep and highly acldie gasfield. Due to the special components of its natural gas, there are many problems in the well deliverability test during the gasfield development process, which leads to difficulties in on-site gas well deliverability evaluation. In light of circumstances of test trouble of multi-well-time well testing by lowering the downhole pressure gauges in this gasfieht, a wellhead deliverability equation was established by available testing data. The wellhead deliverability equation was evaluated through tile wellbead open flow capacity and absolute open flow capacity determined by the deliverability equation established by the well testing data. The application results show that there is a good linear eorrelation between wellhead and absolute open flow capacity in Puguang Gasfield. Therefore, wellhead deliverability equation can be utilized to calculate the absolute open flow capacity, so as to provide a new method to study the gas well deliverability.