中区西部全过程二次开发规律研究拟研究

发布时间：2018-01-20 17:26

  本文关键词： 二次开发 二类油层 水驱 化学驱　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文立足于中区西部二次开发规律,开展了中区西部萨葡油层和高台子油层地质模型建立工作,并选取典型区块进行了数值模拟历史拟合,为中区西部二次开发条件下开发技术界限研究奠定了基础。建立了中区西部萨葡油层及高台子油层的精细相控地质模型,并且建立了孔隙度、渗透率、饱和度以及净毛比等储层状况的模型,研究了渗透率的分布、沉积规律、相渗曲线分布规律等因素的模型,并进行了含水拟合和产量拟合。进而研究中区西部萨葡油层及高台子油层的剩余油的分布状况以及该区储量值。建立地质模型模拟了中区西部萨葡油层和高台油层,中区西部萨葡油层,拟合地质储量8531.54万吨,实际地质储量8491.7万吨,拟合相对误差4.69‰。高台子油层拟合地质储量4695.44万吨,实际地质储量4690.09万吨,拟合相对误差1.14‰。采用数值模拟的方式对中区西部萨葡油层开展了数值模拟历史拟合,计算累积产油量3798.10万吨,实际累积产油量3766.51万吨,相对误差为0.84%;计算含水92.89%,实际综合含水率为92.84%,相对误差为0.57%。单井拟合率达到73.4%,区块压力拟合误差0.26MPa。对中区西部高台子油层开展了数值模拟历史拟合,计算累积产油量1887.45万吨,实际累积产油量1861.99万吨,相对误差为1.35%;计算含水89.97%,实际综合含水率为90.22%,相对误差为0.27%。单井拟合率达到74.9%,区块压力拟合误差0.42MPa。完成中区西部萨葡二类油层、三类油层、高台子油层水驱及化学驱、一类油层聚驱后三元复合驱方案预测,总结了不同阶段开发规律,归纳出中区西部开发模式。
[Abstract]:Based on the law of secondary development in the western part of the central region, this paper has carried out the establishment of geological models of the Sapu and Gaotaizi reservoirs in the western part of the central region, and selected typical blocks to carry out the historical simulation of the numerical simulation. It lays a foundation for the study of the technical limits of development under the condition of secondary development in the western part of the central region. The fine facies controlled geological model of the Sapu and Gaotaizi reservoirs in the western part of the central region is established, and the porosity and permeability are also established. The distribution of permeability, sedimentary law and distribution of facies and permeability curve are studied by using the model of saturation and net / wool ratio. Water cut fitting and output fitting are carried out, and the distribution of remaining oil and reserves in the sap and Gaotaizi reservoirs in the western part of the central region are studied. A geological model is established to simulate the sap and Gaotai reservoirs in the western part of the central region. Layer. In the western part of the central region, there are eighty-five million three hundred and fifteen thousand and four hundred tons of fitted geological reserves and eighty-four million nine hundred and seventeen thousand tons of actual geological reserves. The fitting relative error is 4.69 鈥，

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