厚层底水油藏油井临界产量计算方法

A Calculation Method of Critical Production for Oil Wells in Thick Reservoirs with Bottom Water

涂彬 韩洁 孙键

Tu Bin Han Jie Sun Jian

石油工程教育部重点实验室(中国石油大学(北京)), 北京 102249; 中国石油勘探开发研究院, 北京 100083; 中国石化石油工程技术研究院, 北京 100101

MOE Key Laboratory of Petroleum Engineering(China University of Petroleum), Beijing, 102249, China; Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, China; Sinopec Research Institute of Petroleum Engin

为了更有效地开发厚层底水油藏，针对厚层底水油藏存在立体渗流的特点，将厚层底水油藏内近井区的流动近似为三维球形向心流，基于稳定渗流理论推导了考虑近井区空间渗流影响的厚油层临界产量计算公式，并通过实例验证了其正确性。利用推导的临界产量计算公式，分析了油层厚度、射开厚度和垂向渗透率对临界产量的影响，结果表明，厚层底水油藏的临界产量随着油层厚度、垂向渗透率的增大而增大，随着射孔厚度的增厚先增大后减小。该研究结果可为厚层底水油藏开发合理控制油井产量提供参考。

In order to effectively develop the thick reservoirs with bottom water where the fluids filtrate in three dimensions,a calculation formula of critical production in thick oil layers was derived according to the stable seepage theory,and taking near-well three-dimensional flow approximately as spherical centripetal flow.The formula has been verified by a practical case.Using the new formula,the influences of oil layer thickness,perforating thickness and vertical permeability on critical production were studied.The results showed that the critical production increased with the increase of reservoir thickness and vertical permeability,and increased and then decreased with the increase of perforating thickness.These conclusions can be helpful for controlling the production of oil wells properly in thick reservoirs with bottom water.

中国石油大学（北京）科研基金（编号：KYJJ2012-02-26）资助。

https://doi.org/10.3969/j.issn.1001-0890.2014.04.020