• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural gas science and engineering >Experimental research of the tracer characteristic curves for fracture-cave structures in a carbonate oil and gas reservoir
【24h】

Experimental research of the tracer characteristic curves for fracture-cave structures in a carbonate oil and gas reservoir

机译：碳酸盐岩油气藏缝洞结构示踪特征曲线的试验研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Due to the complexity of the connection between fractures and caves in a carbonate oil and gas reservoir, it is still difficult to recognize their production characteristics, which, in turn, significantly restricts the exploitation of such reservoirs as the Tahe oilfield, China. Therefore, in this work, five typical fracture cave structures in the Tahe oilfield were modeled to investigate their tracer characteristic curves and to understand the differences in production. The experimental results indicate that the characteristic curves of the models are highly consistent with the curves obtained from the oilfield. For the signal fracture-cave connection, a "single-peak" behavior was observed on the tracer concentration curve; meanwhile, for the parallel fracture-cave structure, the tracer concentration curve shows a "double-peak" feature. For all models, a smaller internal space of the fracture or cave (especially for the fracture) corresponds to a s breakthrough time of the tracer (KBr), a higher peak value, and a faster mass concentration increase in the first stage after the breakthrough of the tracer. As the space increases, the dimensionless cumulative mass curves approach the line y = x, and the caves are closer to the line y = x than the fracture. The bottom water dilution, tracer injection rate, injection and production model impose significant effects on tracer curves. These results are highly useful in identifying the real fracture cave structures in the reservoirs and may at least provide a reference for analysis. (C) 2016 Elsevier B.V. All rights reserved.
机译：由于碳酸盐岩油气储层中裂缝与溶洞之间连接的复杂性，仍然难以识别其生产特征，从而严重限制了中国塔河油田等储层的开采。因此，在这项工作中，对塔河油田的五个典型裂缝洞穴结构进行了建模，以研究其示踪剂特征曲线并了解生产差异。实验结果表明，该模型的特征曲线与从油田获得的曲线高度一致。对于信号断裂腔连接，在示踪剂浓度曲线上观察到“单峰”行为;同时，对于平行缝洞结构，示踪剂浓度曲线具有“双峰”特征。对于所有模型，裂缝或洞穴的内部空间较小（特别是对于裂缝），这对应于示踪剂的穿透时间（KBr），较高的峰值以及在穿透后第一阶段的质量浓度增加较快。示踪剂。随着空间的增大，无因次累积质量曲线接近y = x线，并且洞穴比裂缝更靠近y = x线。底部水的稀释度，示踪剂注入速率，注入和生产模型对示踪剂曲线产生重大影响。这些结果对于确定储层中的真实裂缝洞穴结构非常有用，并且至少可以为分析提供参考。 （C）2016 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号