Karstic-fault oil pools are a new type of carbonate reservoirs which is consisted of groups of large caves with high oil storage potential. In this study’s examinations of high-yielding wells, it was found that many valuable reservoirs relate to the drilling wells through fractures or karst caves, and it was not possible to determine the reservoir depths through the method of seismic prospecting precisely due to its poor vertical resolution. The conventional logs cannot be run in the case of no mud circulation due to leaking to the caves. If the depths of the reservoirs cannot be determined, then it becomes difficult to achieve long term and stable development of the oil resources in the reservoirs. The heat transfer between wellbore and formation during oil production processes was simulated by CFD. The Horner method was used for estimating the flow temperature during the stable production stage using the temperature curve measured after shut-in. This research presented a scheme which could be used to effectively determine the depths of karstic-fault reservoirs by static and flow temperature logs. The proposed method was applied to a well located in the Tahe Oilfield of the Tarim Basin. The application of the method will aid in deepening our understanding of the distribution of fault-karst reservoirs, as well as in supporting the future stable and sustainable high-yielding oilfield production of similar reservoirs.

中文翻译：

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基于井筒温度测量和数值模拟的岩溶断层储层深度预测

岩溶断层油藏是一种新型的碳酸盐岩油藏，由成组的大洞穴组成，具有很高的储油潜力。在本次高产井考察中发现，许多有价值的储层都与通过裂缝或溶洞钻探的井有关，由于其垂直性差，无法通过地震勘探的方法精确确定储层深度。解析度。常规原木因漏入洞内，在无泥浆循环的情况下无法运行。如果不能确定储层深度，就难以实现储层石油资源的长期稳定开发。采油过程中井筒与地层之间的传热通过CFD模拟。Horner 方法用于使用关井后测得的温度曲线估算稳定生产阶段的流动温度。该研究提出了一种利用静态和流动温度测井有效确定岩溶断层储层深度的方案。将该方法应用于位于塔里木盆地塔河油田的一口井。该方法的应用将有助于加深我们对断层岩溶储集层分布的认识，也有助于支持类似储集层未来稳定、可持续的高产油田生产。该研究提出了一种利用静态和流动温度测井有效确定岩溶断层储层深度的方案。将该方法应用于位于塔里木盆地塔河油田的一口井。该方法的应用将有助于加深我们对断层岩溶储集层分布的认识，也有助于支持类似储集层未来稳定、可持续的高产油田生产。该研究提出了一种利用静态和流动温度测井有效确定岩溶断层储层深度的方案。将该方法应用于位于塔里木盆地塔河油田的一口井。该方法的应用将有助于加深我们对断层岩溶储集层分布的认识，也有助于支持类似储集层未来稳定、可持续的高产油田生产。