Intelligent Chemical Tracer Technology and Its Application to Reservoir Surveillance
First author:Gao Xingjun(1972-),male,Mingshui County,Heilongjiang Province,Senior Engineer. Research areas include production geology and production well-logging. E-mail:gaoxingjun@petrochina.com.cn
Received date: 2017-12-23
Revised date: 2018-04-05
Online published: 2018-06-13
Copyright
Deepwater oilfield development is very high cost venture in complex reservoir and production conditions. Reservoir development that relies on long horizontal wells and inflow control devices is common practice. Inflow profile monitoring and identification of the time and location of water breakthrough in long horizontal wells are challenging issues due to well production intervention. Intelligent chemical tracer technology, mainly developed by RESMAN and Tracerco, plays an important role in horizontal well monitoring because of its almost no risk and long duration, which gains increasing attention. Because of the inadequate study on intelligent tracer in China, this paper summarized the application of intelligent chemical tracer technology in deep-sea horizontal wells based on examples from overseas oilfields, and comprehensively introduced its basic principles, tracer system design, assembly, placement, sampling and interpretation of intelligent chemical tracer technology. Interpretation process of liquid production profiles along horizontal wells based on high frequency transient tracer sampling and tracer flushing and tracer reaching model was described. The identification process of the time and location of water breakthrough was explained through the low-frequency steady-state sampling and tracer flux model. The intelligent tracer technology achieves the continuous monitoring of oil and water production without changing the horizontal well completion design and without production intervention during monitoring, which has been proved to be suitable in a large range of reservoir condition, such as carbonate, sandstone, shale reservoirs and reservoirs with H2S/CO2 and temperature up to 137 ℃. More and more successful application cases of intelligent tracer make it to become a very potential and efficient technology.
Xingjun Gao , Weiwei Xu , Yichang Yu , Yanran Li , Lei Li . Intelligent Chemical Tracer Technology and Its Application to Reservoir Surveillance[J]. Advances in Earth Science, 2018 , 33(5) : 532 -544 . DOI: 10.11867/j.issn.1001-8166.2018.05.0532
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