XH区块厚层底水稠油油藏稳油控水研究
发布时间：2018-12-29 18:00
【摘要】：XH区块油藏属于厚层底水稠油油藏。由于地层能量充足,区块采用的蒸汽吞吐方式开采。和大多数底水油藏一样,油井受底水锥进影响,油井很快就会水淹导致油井产量迅速递减。而抑制底水锥进速度的难度大,致使油田整体开发的效果变差。因次针对厚层底水稠油油藏如何控制底水锥进速度、实现稳油控水,提高油田开采效果有重大的意义。首先,对XH区块的静态地质资料和动态开发资料进行分析,绘制了研究区块的产油量、采油速度、含水率等开发曲线,对区块的地质概况和开发历程有一个整体的认识,从中找出研究区块在目前的开发状态下存在的问题。其次,应用CMG建立了底水稠油油藏水平井概念模型,把目前XH区块的水平井见水类型归为点状见水局部水淹、多点见水整体水淹、线性见水整体水淹三种类型,以方便针对不同见水类型的水平井进行区别的稳油控水方案。根据研究区块的静态资料,应用Petrel软件建立了区块的三维地质模型,结合动态开发资料,应用Eclipse软件建立了研究区块的数值模拟模型,并进行开发动态拟合,拟合结果在允许精度范围内。根据拟合结果,分析了平面剩余油和纵向剩余油分布规律,对目前水平井的堵水方式进行了开发效果论证。最后,对于单点见水局部水淹采用了针对水淹部位进行机械堵水和化学堵水两种方法,都起到了较好的效果,对于多点见水整体水淹和线性见水整体水淹尝试了关井压锥和N2泡沫调剖堵水等方法。利用渗流理论势的叠加方法研究了XH区块两井产量不干扰的条件下的合理水平井井距,在合理井距的基础上进行了加密水平井的稳油控水方法并通过注入N2泡沫能有效的抑制水锥,优选了N2泡沫堵水的合理转注时机及合理的焖井时间,最终进行开发效果预测。
[Abstract]:XH block oil reservoir belongs to thick reservoir with bottom water. Because the formation energy is sufficient, the block adopts the steam huff and puff way to exploit. Like most bottom water reservoirs, oil wells are affected by bottom water coning, and soon flooding leads to a rapid decline in oil production. However, it is difficult to restrain the coning velocity of bottom water, which makes the effect of oil field development worse. It is of great significance that how to control the bottom water coning velocity, realize stable oil production and control water, and improve the production effect of heavy oil reservoir with thick reservoir bottom water. First of all, the static geological data and dynamic development data of XH block are analyzed, and the development curves such as oil production, oil production speed and water cut are drawn. The problems existing in the current development state of the research block are found out. Secondly, the concept model of horizontal wells in heavy oil reservoirs with bottom water is established by using CMG. The types of horizontal wells in XH block are classified into three types: local flooding, integral flooding and linear flooding. In order to facilitate the different types of horizontal wells for different oil and water control plan. According to the static data of the study block, the 3D geological model of the block is established by using Petrel software. Combined with the dynamic development data, the numerical simulation model of the research block is established by using the Eclipse software, and the development dynamic fitting is carried out. The fitting results are within the allowable precision range. According to the fitting results, the distribution law of plane residual oil and longitudinal residual oil is analyzed, and the development effect of water shutoff mode in horizontal wells is demonstrated. Finally, two methods of mechanical water shutoff and chemical water shutoff are adopted for local waterflooding at single point, both of which have a good effect. The methods of shut-in cone and N2 foam profile control and plugging have been tried for multi-point waterlogging and linear water-flooded. Using the superposition method of percolation theory potential, the reasonable horizontal well spacing under the condition that the production of two wells in XH block is not disturbed is studied. On the basis of reasonable well spacing, the oil production and water control method of infilled horizontal well is carried out, and the water cone can be effectively suppressed by injecting N2 foam, and the reasonable turning time and the reasonable stewing time of N 2 foam plugging are selected, and the development effect is finally predicted.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE345
本文编号：2395176
[Abstract]:XH block oil reservoir belongs to thick reservoir with bottom water. Because the formation energy is sufficient, the block adopts the steam huff and puff way to exploit. Like most bottom water reservoirs, oil wells are affected by bottom water coning, and soon flooding leads to a rapid decline in oil production. However, it is difficult to restrain the coning velocity of bottom water, which makes the effect of oil field development worse. It is of great significance that how to control the bottom water coning velocity, realize stable oil production and control water, and improve the production effect of heavy oil reservoir with thick reservoir bottom water. First of all, the static geological data and dynamic development data of XH block are analyzed, and the development curves such as oil production, oil production speed and water cut are drawn. The problems existing in the current development state of the research block are found out. Secondly, the concept model of horizontal wells in heavy oil reservoirs with bottom water is established by using CMG. The types of horizontal wells in XH block are classified into three types: local flooding, integral flooding and linear flooding. In order to facilitate the different types of horizontal wells for different oil and water control plan. According to the static data of the study block, the 3D geological model of the block is established by using Petrel software. Combined with the dynamic development data, the numerical simulation model of the research block is established by using the Eclipse software, and the development dynamic fitting is carried out. The fitting results are within the allowable precision range. According to the fitting results, the distribution law of plane residual oil and longitudinal residual oil is analyzed, and the development effect of water shutoff mode in horizontal wells is demonstrated. Finally, two methods of mechanical water shutoff and chemical water shutoff are adopted for local waterflooding at single point, both of which have a good effect. The methods of shut-in cone and N2 foam profile control and plugging have been tried for multi-point waterlogging and linear water-flooded. Using the superposition method of percolation theory potential, the reasonable horizontal well spacing under the condition that the production of two wells in XH block is not disturbed is studied. On the basis of reasonable well spacing, the oil production and water control method of infilled horizontal well is carried out, and the water cone can be effectively suppressed by injecting N2 foam, and the reasonable turning time and the reasonable stewing time of N 2 foam plugging are selected, and the development effect is finally predicted.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE345
【参考文献】
相关期刊论文 前1条
1 关文龙,李敬松,李相方;低渗底水气藏射开水层气水合采新方法[J];天然气工业;2003年05期
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