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1.运用蒸汽吞吐数值模拟技术优化论证方案 孤岛油田中二北稠油热采单元1992年7月正式投入开发,采用反九点法井网布置,目前共有总井107口,开井87口。根据孤岛油田中二北开发和含水状况,筛选出加密区,考虑到数值模拟要有代表性,在设计区中部选择一排井进行数值模拟研究。根据所提供的剖面井组,建立了6口井的地质模型,并对这6口井的累计产油、累计产液和累计注汽等指标进行了拟合,同时对井组和单井日产油含水和压力变化趋势进行拟合。从数值拟合研究的成果来看所设计的加密井具有可行性,可取得较好的开发效果及经济效益,通过加密,可提高剖面井采收率6％～10％(预测6年)。
1. Use steam stimulation numerical simulation technology to optimize the demonstration program Gudao Oilfield Zhongbei North heavy oil thermal recovery unit was officially put into operation in July 1992, the use of anti-nine-point well pattern layout, there are 107 total wells, a total of 87 wells. According to the development and water content of Zhongbei North in Gudao Oilfield, the encrypted area was selected. Considering that the numerical simulation should be representative, a row of wells was selected in the middle part of the design area for numerical simulation. According to the provided cross-section well group, the geological model of 6 wells was established, and the accumulated oil production, accumulated liquid production and accumulated steam injection of the 6 wells were fitted. At the same time, the well group and single well Nissan Oil water and pressure trends to fit. According to the result of numerical simulation, the design of infill wells is feasible and can achieve good development results and economic benefits. By encrypting it, the recovery rate of sectioned wells can be increased by 6% -10% (predicted for 6 years).