确定三项式产能方程系数的新方法  

New method to determine the deliverability equation factor of tri-item equation for low permeability fracturing gas wells

作　　者：李伟[1] 于士泉[1] 郑丽坤[2] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]大庆石油学院石油工程学院,黑龙江大庆163318

出　　处：《大庆石油地质与开发》2008年第4期61-63,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：二项式产能方程只能描述高速非达西渗流,对于低渗压裂气井,地层的低渗透性和裂缝的高导流能力使得其渗流规律已经和压裂前大不一样,二项式产能方程已无法描述气井的生产状况,必须建立新的方程。用三项式取代二项式,是油气井产能试井的一种新的理论和方法。气井三项式产能方程计算气井无阻流量关键在于确定系数值。在分析推理得出了一种简单的方法来确定气井三项式产能方程的基础上,通过井底流压和产气量的数据,利用线性回归法,即可建立三项式产能方程。通过某气藏的实际资料计算结果表明提出的方法计算结果可靠,具有较为广阔的应用前景。The binomial deliverability equation can only be used to describe the high velocity non-Darcy filtering flow. For low permeability fracturing gas wells, due to low permeable property and high flow conductivity of the formation, the filtering flow laws of the formation are different from those before fracturing, and binomial deliverability equation can not be used for the flow condition of gas wells, therefore, new equation is needed. It is one new theory and method to replace the binomial with tri-item equation for deliverability test of oil and gas wells. When the tri-item deliverability equation for gas wells is used for the calculation of the AOF for gas wells, the key is the determination of factors. In this paper, a simple method is used to determine the tri-item deliverability equation for gas wells. Based on BHFP and gas production, and with the application of linear regression method, the tri-item equation can be established. The calculation results for one certain gas reservoir suggest that the calculation results based on the method are reliable, and this method has high applicable potential.

关 键 词：气井 三项式 产能 新方法 

分 类 号：TE122.222[石油与天然气工程—油气勘探]