溶解气驱油藏非完善井流入动态方程

Inflow performance equation of partially penetrated well in solution gas drive reservoirs

任宗孝 吴晓东 赵金赢 安永生 李准 邢强

REN Zongxiao WU Xiaodong ZHAO Jinying AN Yongsheng LI Zhun XING Qiang

中国石油大学石油工程教育部重点实验室，北京　102249 中国石油华北油田分公司第四采油厂，河北廊坊　065000 延长油田股份有限公司勘探开发技术研究中心，陕西延安　716000

Key Laboratory of Education Ministry for Petroleum Engineering, China University of Petroleum, Beijing 102249, China No. 4 Oil Production Plant of Huabei Oilfield Company, CNPC, Langfang 065000, China Research Center of Exploration and Development Technology, Yanchang Oil field Co.Ltd, Yan’an 716000, China

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。通过分析Standing 产能方程，指出Standing 定义的流动效率（油井在同一产量下理想井底压差与实际井底压差之比）是建立在油藏单相渗流理论基础之上，并不适用于油气两相渗流。选用相同压降下实际油井产量与理想油井产量之比定义流动效率，建立了新的非完善井产能预测方程，该方程计算结果的正确性得到了油藏数值模拟结果的验证。

Standing established the IPR curve equation for partially penetrated wells in solution gas drive reservoirs based on Vogel equation. But Standing’s equation is not unanimously accepted by scholars from both home and abroad. The analysis of Standing’s equation on productivity shows that the flow efficiency defined by Standing (the ratio of ideal hole bottom pressure differential with and actual bottom pressure differential under the same production of the oil well) is based on theory of single phase flow in reservoirs and is not applicable to oil/gas double-phase flow. The ratio of actual oil well production with the ideal oil well production under the same pressure drop was used to define the flow efficiency and a new productivity prediction equation of partially penetrated well was established. The calculation result of this equation was verified by the results of reservoir numerical simulation.

10.13639/j.odpt.2015.05.017