考虑关停井情况的井间动态连通性反演方法
lnterwell Dynamic Connectivity Inverse Approach with Considering Well Shutdown
浏览(1638) 下载(8)
- 引用格式:
-
李颖,赵辉,康志江,古振东,孙海涛.考虑关停井情况的井间动态连通性反演方法[J].天然气与石油,2015,33(5):0.doi:
Li Ying, Zhao Hui, Kang Zhijiang, Gu Zhendong, Sun Haitao.lnterwell Dynamic Connectivity Inverse Approach with Considering Well Shutdown[J].Natural Gas and Oil,2015,33(5):0.doi:
- DOI:
- 作者:
- 李 颖1 赵 辉1 康志江2 古振东3 孙海涛1
Li Ying, Zhao Hui, Kang Zhijiang, Gu Zhendong, Sun Haitao
- 作者单位:
- 1.长江大学石油工程学院，2.中国石化石油勘探开发研究院，3.中国石油集团海洋工程有限公司
1.Yangtze University College of Petroleum Engineering；2.SINOPEC Oil Exploration and Development Research Institute; 3.CNPC Offshore Engineering Co., Ltd.,
- 关键词:
- 井间连通性；物质平衡；最优化算法；反问题；模型参数
lnterwell connectivity; Material balance; Optimum algorithm; Inverse problem; Model parameter
- 摘要:
- 针对当前油田井间连通性模型难以考虑关停井问题且反演方法可靠性差的局限性，建立综合考虑压缩性和关停井情况的井间动态连通性模型。利用理论分析和数值模拟研究方法，对模型连通系数和时滞系数与油藏静态参数之间的关系进行了定量研究，明确其实际地质意义，快速地为油田井间连通性反演计算提供较好的初始估计。为进一步降低求解不适定性，基于贝叶斯反问题理论和投影梯度法，建立连通性模型整体约束优化方法，并给出详细计算步骤。对概念模型和实际油藏的连通性计算测试表明，所提出的模型及求解方法，能够快捷、较精确地进行油水井间动态连通性定量计算，具有较好的实际应用效果。
At present, oil field interwell connectivity model can not reflect well shutdown procedures and the inversion method is not dependable. In view of such limitations, established is a concise dynamic connectivity model in which compressibility and well shutdown procedures are considered comprehensively. Applied is the method of theoretical analysis and numerical simulation study for quantitative analysis on the relationship between coefficient of model connectivity and time-delay and reservoir static parameters so as to clear and definite actual geological meaning and rapidly provide a good initial estimation for oil field interwell connectivity inversion calculation. In order to reduce ill-posedness of solution, proposed is an integrated constraint optimization method of interwell connectivity model and provided are the detailed calculation steps based on Bayesian theory and projection gradient method. Conducted is connectivity calculation of conceptual model and a real reservoir and calculation results show that the model and its solving method can fast and accurately conduct quantitative calculation of dynamic connectivity between oil and water wells, which has a good effect in practical application.
