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| 考虑启动压力梯度的油水两相渗流压力分布 | |
| 引用本文： | 田敏,李楠,吴文瑞,张萌. 考虑启动压力梯度的油水两相渗流压力分布[J]. 复杂油气藏, 2012, 5(1): 51-54 |
| 作者姓名： | 田敏 李楠 吴文瑞 张萌 |
| 作者单位： | 1. 西南石油大学油气田地质及开发国家重点实验室,四川成都,610500 2. 中国石油勘探开发研究院,北京,100083 3. 中国石油长庆油田第三采油厂,宁夏银川,750006 4. 东北石油大学石油工程学院,黑龙江大庆,163318 |
| 基金项目： | 国家973计划“碳酸盐岩缝洞型油藏注水开发研究”（2011CB201005） |
| 摘 要： | 针对目前低渗透油水两相油藏渗流压力分布规律研究较少,且未考虑含水饱和度沿径向不均匀分布等问题,在充分考虑到水驱前缘突破油井后,含水饱和度沿油藏径向不均匀分布的情况下,建立了考虑启动压力梯度的油水两相径向稳定渗流模型,并推导出了压力分布方程。利用实验数据,结合径向Buckley-Leverett方程获得油水两相启动压力梯度以及两相流度与径向距离r的函数关系,代入到求解的压力分布方程中求出该油藏的最终压力分布,并结合实例进行计算。 |
| 关 键 词： | 低渗透油气藏 油水两相 启动压力梯度 压力分布 |
Pressure distribution of oil-water seepage considering start-up pressure gradient |
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| Tian Min,Li Nan,Wu Wenrui,Zhang Meng. Pressure distribution of oil-water seepage considering start-up pressure gradient[J]. Small Hydrocarbon Reservoirs, 2012, 5(1): 51-54 | |
| Authors: | Tian Min Li Nan Wu Wenrui Zhang Meng |
| Affiliation: | 1.State Key Laboratory of Reservoir Geology and Exploration,Southwest Petroleum University,Chengdu,Sichuan 610500; 2.Research Institude of Petroleum Exploration and Development of CNPC, Beijing 100083; 3.No.3 Oil Production Plant,Changqing Oilfield Company,Yinchuan,Ningxia 750006; 4.College of Petroleum Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318) |
| Abstract: | Because of rarely studying on pressure distribution of oil-water seepage in low-permeability reservoir and not considering uneven distribution of water saturation along radial direction,a radial oil-water seepage model considering start-up pressure gradient was established under the condition of uneven distribution of water saturation along reservoir radial direction after completely considering waterflood front breakthrough oil well.And a pressure distribution equation was deduced.The functional relation between radial distance （r） and two-phase fluidity and start-up pressure gradient is obtained by adopting radial Buckley-Leverett equation and experimental data.The relationship was put in the pressure distribution equation to obtain the final pressure distribution of the reservoir by combining with an actual example. |
| Keywords: | low permeability reservoir oil-water two-phase start-up pressure gradient pressure distribution |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |