新疆F油田超稠油SAGD产能预测研究

发布时间：2018-01-20 03:15

本文关键词： 超稠油 SAGD 产量预测蒸汽腔数学模型　出处：《西南石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：新疆F油田超稠油具有粘度大,埋藏浅的特点,常规方式开采难度大,采出程度低,目前主要采用SAGD技术进行开采。SAGD技术目前在国内外也被认为是超稠油开采的最有效手段之一。国内外学者主要对稠油油藏SAGD开发的渗流机理进行了试验和模拟研究,取得了一定的成果与认识。蒸汽腔的在开采过程中的形态变化特征和地层的物性、热力学参数等对SAGD的高效开采具有重大的影响。本文考虑新疆F油田的地质特征、超稠油的储量资源和开发历程,验证SAGD技术的可行性,并与常规开采方式进行对比,分析该技术的优势。通过对超稠油双水平井SAGD渗流模式、蒸汽腔的扩展形状和双水平井SAGD热力学参数进行研究,建立了一套适合于新疆F油田的SAGD双水平井产量预测方法,确定了蒸汽腔的移动边界。通过对地层资料的分析发现油层中含有不同程度的夹层,其对SAGD开发效果有显著的影响,由此本文对SAGD蒸汽腔突破夹层的方式进行研究,同时研究出考虑夹层的产能计算方法,讨论夹层对产能的影响。分析产能的影响因素和油藏非均质性对水平井流入动态的影响,最后通过实例验证了产能预测模型的正确性和可靠性。本文的研究能够指导新疆F油田超稠油油藏更加高效的开发,同时对国内外稠油油藏SAGD产量预测理论进行了创新和丰富。
[Abstract]:The super heavy oil in Xinjiang F oilfield has the characteristics of high viscosity and shallow burial. It is difficult to exploit in the conventional way and the degree of recovery is low. At present, SAGD technology is mainly used to develop. SAGD technology is also considered to be one of the most effective means of super heavy oil recovery at home and abroad. Domestic and foreign scholars mainly for heavy oil reservoir SAGD development of percolation machine. Experiments and simulations were carried out. Some achievements and understandings have been made. The characteristics of the shape change and the physical properties of the formation of the steam chamber in the process of mining. The thermodynamic parameters have a great influence on the efficient exploitation of SAGD. This paper considers the geological characteristics of Xinjiang F oilfield, reserves resources and development history of super heavy oil, and verifies the feasibility of SAGD technology. The advantages of this technique are analyzed by comparing with conventional production methods. The SAGD seepage model, the expansion shape of steam cavity and the SAGD thermodynamic parameters of double horizontal wells for super heavy oil are studied. A set of SAGD double horizontal well production prediction method suitable for Xinjiang F oilfield is established, and the moving boundary of steam cavity is determined. Through the analysis of formation data, it is found that there are different interlayers in the reservoir. It has a significant impact on the development effect of SAGD. Therefore, this paper studies the way of breaking through interlayer in SAGD steam chamber, and studies the calculation method of productivity considering interlayer at the same time. The influence of intercalation on productivity and the influence of reservoir heterogeneity on horizontal well inflow performance are discussed. Finally, the validity and reliability of productivity prediction model are verified by an example. The research in this paper can guide the development of super heavy oil reservoir in Xinjiang F oilfield more efficiently. At the same time, the theory of SAGD production prediction in heavy oil reservoirs at home and abroad is innovated and enriched.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE328

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