C油田水平井中心管调流控水方案优化研究

发布时间：2018-09-02 07:46

【摘要】：水平井技术现已成为国内外高效开发底水油藏的重要手段之一,但水平井含水率上升快、产量递减迅速的问题也日益突显。目前C油田的水平井已经进入高含水开发阶段,制约了该油田高效开采,所以本文以C油田中心管控水技术为研究对象,形成适用于该油田的中心管控水设计优化方法,以实现水平井降水增油的效果。中心管控水完井技术通过改变井筒中产液流向,降低产液量大的水平段压差从而使流入剖面更加均衡,以延缓底水上升趋势。本文在研究中心管原理、数学模型和水淹模式等理论学习之后,对C油田进行了中心管技术适用性分析,根据地质资料、流体物性、井身结构和产液特征等参数,对12口目标井进行了评价,总结可以考虑采用中心管控水的水平井。然后以A井为例进行了详细的中心管控水方案设计,针对水脊特征对中心管的下入位置、结构、长度和管径实行了优选,进一步提高了中心管控水方案设计水平,为今后C油田的控水增产措施提供了技术支撑。本文在常规中心管控水技术之上,提出了在中心管内填充材料的改进思路,通过物理实验做了初步的探讨。由于实验条件的限制,本文只是抛砖引玉做了基础实验,为以后进一步的研究打下了基础。
[Abstract]:Horizontal well technology has become one of the most important means to develop bottom water reservoir efficiently at home and abroad, but the problem of water cut rising rapidly and production decreasing rapidly in horizontal well is becoming more and more prominent. At present, the horizontal well in C Oilfield has entered the stage of high water cut development, which restricts the efficient production of this oilfield. Therefore, this paper takes the central control water technology of C Oilfield as the research object, and forms an optimization method of the central control water design suitable for this oilfield. In order to achieve the effect of horizontal well precipitation and oil increase. By changing the flow direction of the fluid produced in the wellbore and reducing the pressure difference in the horizontal section with large liquid production, the central controlled water completion technology can make the inflow profile more balanced and delay the rising trend of the bottom water. After studying the theory of central pipe principle, mathematical model and water flooding model, this paper analyzes the applicability of central pipe technology in C oilfield. According to the geological data, fluid physical properties, well structure and liquid production characteristics, etc. Twelve target wells are evaluated, and the horizontal wells with central water control can be considered. Then, taking well A as an example, a detailed central control water scheme is designed. According to the characteristics of the water ridge, the location, structure, length and diameter of the central pipe are optimized, and the design level of the central control water scheme is further improved. It provides technical support for water control and production increase measures in C oilfield in the future. In this paper, based on the conventional central water control technology, the improvement of the filling material in the central tube is put forward, and a preliminary discussion is made through physical experiments. Due to the limitation of the experimental conditions, this paper has done a basic experiment, which will lay a foundation for further research.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE243

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