摘要
分析油气井的产量变化规律是制定油藏开发方案的重要基础。通过求解水平井三维不稳态渗流数学模型，给出了水平井在定井底流压生产条件下的产量递减规律，指出了在拟稳态期其产量递减符合Arps指数递减形式。根据扩展后的Fetkovich定义，建立了水平井Fetkovich／Arps联合产量递减图版，对参数拟合方法进行了详细分析和实例计算，结果表明该方法具有较强的实用性和准确性。
The analysis of the production change laws of oil and gas wells is the important basis of programming the oil reservoirs development. With the help of the solutions seeking for the mathmetical model of the unsteady 3 D flow in a horizontal well, the decline laws of the production are established under the condition of the constant bottom flow pressure of the well, and moreover the decline form of the production accorded with Arps exponential decline is presented in the period of pseudosteady state. According to the expanded Fetkovich definition, the chart board of Fetkovich/Arps combined production decline for the horizontal well is established and then the detailed analysis and case calculation are conducted for the parameter matching method. The results show that the method possesses much stronger practicability and higher accuracy.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2012年第6期69-72,共4页
Petroleum Geology & Oilfield Development in Daqing
