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Analysis of Pressure Transient for Fractured- Vuggy Reservoirs with Coupling of Pipe Flow and Seepage

机译:裂隙孔型油藏压力瞬变的管渗流耦合分析

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For the existence of certain large size vugs and fractures in some reservoirs, such as Tahe oilfield, fluid is mainly stored in the vugs and fractures and vugs and fractures are the main flow channels. There exists not only seepage but also pipe-flow in the medium, due to the complexities of fractured-vuggy reservoirs. The flow mechanism and the flow theories of fractured-vuggy reservoirs are not yet mature;these factors cause great difficulties to the exploration and development of such reservoirs. This paper focuses on the coupling flow between pipe flow and seepage, the proposed idea is that the flows in vugs are pipe flow and seepage are in fractures. The coupling flow model is established, the new pressure derivative curves of the cavityfracture reservoirs are drawn, the analysis of the characteristics and influencing factors are presented. Since the model takes the coupling flow between pipe flow and seepage into consideration, it provides a new model and interpretation for vuggy and fractures reservoirs, and sets up a new foundation for these reservoirs.
机译:由于塔河油田等储层中存在一定尺寸的大孔洞和裂缝,因此,流体主要储藏在孔洞中,裂缝和裂缝是主要的流动通道。由于缝隙状储层的复杂性,介质中不仅存在渗流,而且还存在管道流。缝洞型油藏的流动机理和流动理论尚未成熟,这些因素给这类油藏的勘探和开发带来了很大的困难。本文着重研究管道流与渗流之间的耦合流动,提出的想法是,孔洞中的流是管道流,渗流是裂缝。建立了耦合流动模型,绘制了新型的裂缝型储层压力导数曲线,并对其特征及影响因素进行了分析。由于该模型考虑了管流与渗流之间的耦合流,因此为裂缝性和裂缝性储层提供了新的模型和解释,并为这些储层建立了新的基础。

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