非完善油井流入动态方程研究

Inflow Performance Relationship Equation of Partially Penetrated Well

Standing在Vogel方程的基础上建立了溶解气驱油藏非完善井的IPR方程;但这一方程并未得到国内外学者的一致认可。部分学者指出Standing方程计算结果不正确;并找到了Standing方程错误的原因;进一步建立了新的溶解气驱非完善井流入动态方程。由于油井完井方式(射孔完井以及打开程度不完善井),以及在生产过程中出砂或酸化等多种因素,造成了大量油井为非完善井。基于新的溶解气驱非完善井流入动态方程,详细推导建立了非完善油井组合型流入动态方程以及油气水三相流入动态方程,油气水三相流入动态方程计算结果的正确性得到了胜利油田试井数据的验证。为现场实际油井(非完善油井)的产能计算提供了理论依据。

The IPR curve equation of Standing for partially penetrated well in solution gas drive reservoir based on Vogel equation was established. But Standing equation is not unanimously accepted by scholars from the home and abroad. Some scholars pointed out that the calculation result of Standing equation is' t correct and found the cause of error on Standing equation. The new inflow performance equation of partially penetrated well in solution gas drive reservoir was further established. A large number of oil wells are damaged well because of the well completion method( perforated completion and partial penetration) and a variety of factors such as sand entry or acidification. Combination style inflow performance equation of partially penetrated well and inflow performance equation of oil-gas-water three phase based on Standing equation detailedly was derived and established. The calculation result'validity of oil-gas-water three phase inflow performance equation was verified by the measured data in Shengli Oilfield. The new inflow performance equation provides a theoretical basis for deliverability calculation of actual wells( partially penetrated wells) in field.