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阿南油田构造复杂 ,非均质性较强 ,是典型的低渗透砂岩油田 ,注水开发存在油产量低、采出程度低、稳产难度大三大矛盾。为了提高阿南油田低渗透砂岩油藏的动用程度 ,提高油田产油量 ,降低含水率 ,为下一步新区块投入开发及油田注水开发调整提供依据 ,以阿 11断块的阿 11- 30 4井组 (其开发层位是 A上 油组 )为研究对象 ,充分利用井组内及邻近区域内井的油藏精细描述静态资料和井组内注采井的动态资料 ,参考注采井的产吸剖面资料 ,应用油藏数值模拟技术研究了该井组稳定注水的 6种方案 ,优化了阿南低渗透砂岩油藏的注水参数。
The Annan oilfield is characterized by complex structure and strong heterogeneity. It is a typical low-permeability sandstone oilfield. There are three major contradictions in the development of waterflooding such as low oil production, low recovery and stable production. In order to improve the utilization of low-permeability sandstone reservoirs in Anan Oilfield, increase the oil production and decrease the water cut in the oilfields, provide the basis for the next step in the development of new blocks and the development and adjustment of oilfield waterflooding. Group (whose development horizon is oil-bearing group A) is taken as the research object. By making full use of the well-known static data and the dynamic data of well injection and injection well in the wells in and near the well group, 6 profiles of stable well water injection were studied by reservoir numerical simulation technique and water injection parameters of Anan low permeability sandstone reservoir were optimized.