试井解释技术在Taq Taq油田的应用 _油藏「问人人知识网」

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李林地刘红陈志海
（中国石化石油勘探开发研究院，北京 100083）
摘要本文针对Taq Taq油田特殊的储层地质特征开展了解析试井和数值试井技术及应用研究。Taq Taq油田的基质普遍致密，裂缝既是储集空间又是渗流通道，因此该油田双层油藏模型的双重介质是指裂缝网络和裂缝通道；所谓窜流，理解为流体由裂缝网络向裂缝通道的流动。总结了压力恢复测试时双对数曲线经常出现的特征，即：双层油藏特征、球形流动特征和线形流动特征。采用数值试井方法建立了油藏试井动态概念模型，为复杂油藏试井动态描述、评价提供了可靠的技术支撑平台。试井解释存在多解性，如果不结合静态地质资料和井的实际情况，只凭试井曲线的形态进行模型诊断和解释，有时候即使能完全拟合，其解释结果也可能与井的实际情况相差甚远或自相矛盾。因此数值试井和解析试井两种方法可以互相对比验证，以便求取更可靠的解释结果。研究结果丰富了裂缝性碳酸盐岩油藏的试井解释方法，对指导碳酸盐岩储层进一步开发方案设计具有指导意义。
关键词裂缝性碳酸盐岩油藏解析试井数值试井
Application of Well Test Interpretation Techniquein Taq Taq Oilfield
LI Lindi；LIU Hong；CHEN Zhihai（SINOPEC Exploration ＆ Production Research Institute ， Beijing 100083，China）
Abstract According to the special reservoir geological features of Taq Taq Oilfield，this paper conducts study on analytical and numerical well testing technology as well as its applicationBased on the universal tight matrix of this oilfield ， the dual media of dual-reservoir model refer to fracture network and fracture channel where fluid flows from fracture network to fracture channelCharacteristics frequently occurred in well testing with different well intervals have been summarized in this paperNumerical well test approach has been deployed to set up dynamic notional models，therefore，difficulties of boundary well test dynamic description of asymmetric complicated shape reservoir have been solvedThis has supplied a reliable technical platform for well test dynamic description and evaluation for complex reservoirsWell test analysis has ambiguitySo analytical and numerical way could compare and verify each other to gain more reliable resultsResearch result has enriched well test interpretation approach for fractured carbonate reservoir，which supplies a great importance for guiding further development scheme designs of carbonate reservoir
Key words fractured carbonate reservoir；analytical well test interpretation；numerical well test interpretation
与常规砂岩油藏相比，裂缝性碳酸盐岩油藏最突出的问题是极强的非均质性，这使得该类油藏的开发出现了许多困难。试井分析作为人们认识油藏动态特征和流动规律的有效手段，是关系到正确求取油藏特性参数和指导进一步开发的关键［1］。因此，深入开展裂缝性碳酸盐岩油藏试井分析理论和解释方法研究具有十分重要的意义。本文针对Taq Taq油田白垩系碳酸盐岩油藏的储层地质特征，在技术调研和试井资料解释状况系统分析的基础上，探索应用于裂缝性碳酸盐岩油藏的试井解释方法，为油田开发过程中油藏早期动态评价提供技术支持。