考虑启动压力梯度的低渗透渗流模型改造
Transformation of Low-Permeability Flow Model Considering Threshold Pressure Gradient
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- 引用格式:
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刘,刚,孙建博,尹锦涛,徐,杰.考虑启动压力梯度的低渗透渗流模型改造[J].天然气与石油,2016,34(4):0.doi:
Liu Gang, Sun Jianbo, Yin Jintao, Xu Jie.Transformation of Low-Permeability Flow Model Considering Threshold Pressure Gradient[J].Natural Gas and Oil,2016,34(4):0.doi:
- DOI:
- 作者:
- 刘 刚 孙建博 尹锦涛 徐 杰
Liu Gang, Sun Jianbo, Yin Jintao, Xu Jie
- 作者单位:
- 陕西延长石油(集团)有限责任公司研究院
Research Institute of Shaanxi Yanchang Petroleum(Group) Co., Ltd,
- 关键词:
- 低渗透油藏;启动压力梯度;模型改造;油藏数值模拟
Low-permeability reservoir; Threshold pressure gradient; Model transformation; Reservoir numerical simulation
- 摘要:
- 如何充分反映启动压力梯度的影响一直是低渗透油藏数值模拟研究领域的难点,以低渗透油藏渗流机理为研究起点,通过对低渗透油藏渗流模型的改造,得到了一种启动压力梯度在数值模拟方程中新的表现形式,并研发出相应的低渗透油藏数值模拟编辑器,通过与专业石油软件进行对比验证了该模型的高精确度,进一步结合实际油田资料完成了该模型的实际生产应用,结果表明改造后的模型很大程度上加强了启动压力梯度对低渗透数值模拟过程的影响程度,并且能够更加准确地反映出低渗透油藏的实际生产动态。
It is a key issue to show the influence of threshold pressure gradient in numerical simulation of low-permeability reservoirs. With the analysis of low-permeability flow mechanism, a new type of threshold pressure gradient in numerical simulation was obtained via model transformation in this paper. The high precision of model was verified through comparison between the numerical simulation editor and special software Eclipse. The actual application of this model was finished according to field data. The results showed that influence of threshold pressure gradient can be easily expressed in the transformed model and better reflects the actual development of low-permeability reservoirs.
