低渗倾斜边水油藏水平井见水时间预测

发布时间：2018-06-04 20:47

本文选题：低渗 + 水平井　；参考：《大庆石油地质与开发》2017年05期

【摘要】：现有边水突破时间预测模型都是基于中高渗油藏或不存在地层倾斜角,但实际边水油藏一定存在倾斜角,所以不能忽略由于倾斜角造成的重力作用的影响。基于油水两相渗流力学理论,建立符合实际情况的低渗倾斜边水油藏模型,且推导出低渗倾斜边水油藏水平井见水时间预测公式,其考虑了启动压力梯度、地层倾斜角、油水密度差、水平井到边水距离和水平井射孔长度等因素,并对影响因素进行了逐一分析。实例分析结果表明,与现有的预测边水突破时间计算公式相比,该计算方法预测的低渗倾斜边水突破时间更加接近实际情况。对于研究低渗倾斜边水舌进机理和低渗边水油藏生产管理工作具有重要的指导作用。
[Abstract]:The existing prediction model of water breakthrough time is based on medium high permeability reservoir or no stratum dip angle, but there must be inclination angle in the actual water reservoir, so we can not ignore the effect of gravity action caused by inclined angle. Based on the theory of oil-water two-phase seepage mechanics, a low permeability and inclined water reservoir model is set up in accordance with the actual situation. The prediction formula of water time for horizontal wells in low permeability and inclined water reservoir is derived. The factors such as starting pressure gradient, formation tilt angle, oil and water density difference, horizontal well to side water distance and horizontal well perforation length are considered, and the influencing factors are analyzed one by one. Compared with the actual situation, the low permeability and sloping water breakthrough time predicted by the calculation method is more close to the actual situation. It has an important guiding role in the study of the mechanism of low permeability tilting edge water tongue and the production management of low permeability water reservoir.
【作者单位】：中国石化胜利油田分公司地质科学研究院;西南石油大学油气藏地质及开发工程国家重点实验室;
【基金】：国家自然科学基金青年科学基金项目“考虑启动条件和井筒降压的底水油藏分支水平井水脊藕合模型”(51404201) 国家科技重大专项“厚油层水驱过程中驱油效率及剩余油分布模式实验”(2011ZX050102003)
【分类号】：TE349

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