基于非线性规划法的一点法产能公式优化  

Optimizing productivity formula of one-point method based on nonlinear programming

作　　者：何敏 He Min(Chongqing Gas District,PetroChina Southwest Oil&Gasfield Company,Chongqing 404100,China)

机构地区：[1]中国石油西南油田公司重庆气矿

出　　处：《天然气勘探与开发》2018年第3期81-84,共4页Natural Gas Exploration and Development

摘　　要：在气田开发过程中,气井无阻流量是评价气井产能、制定合理生产制度最重要的依据之一。目前应用最广泛的计算方法是陈元千教授利用四川16口气井的稳定试井数据,采用平均α值的方法建立的一点法无阻流量计算公式。开发实践发现,该公式对不同的气田计算的无阻流量仍可能带来较大的误差。以川东地区30余年稳定试井资料为基础,利用最优化法对一点法产能公式进行改进。经比较,最优化方法获得的一点法公式比平均α法获得的一点法公式计算的无阻流量误差更小,对产能评价更可靠。In the process of gasfield development,absolute open flow(AOF)is one of the most important bases to evaluate productivity and formulate rational production system for gas wells.At present,the common-used AOF calculation is one-point formula,which was established by Professor Chen Yuanqian adopting averageαmethod based on steady-state well te sting data from 16 wells of Sichuan Basin.However,AOF error in different fields calculated by one-point formula may be larger.So,this one-point productivity formula was modified by means of optimization method based on steady-state well testing data of eastern Sichuan Basin over 30 years.Comparative analysis shows that AOF error calculated by the one-point formula derived from the optimization method is smaller than that from averageαmethod,also reflecting that this formula is more reliable for productivity evaluation.

关 键 词：最优化求解 非线性GRG一点法求解 稳定试井 产能评价 无阻流量 

分 类 号：TE328[石油与天然气工程—油气田开发工程]