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注水是国内外应用最为广泛的油田开发方式和二次采油方法,保证油田正常注水,达到预期的油田注水开发效果就显得非常重要,尤其对低渗透砂岩油藏更是如此。大量研究表明,其主要的影响因素是注入水水质方案、注水工艺和管理水平。针对低渗透油藏的特点,在综合考虑油田注水水质的配伍性、注水井吸水能力、油田配注要求、水质处理成本、注入水增注成本以及注入水综合成本等因素的基础上,以经济评价为手段,以降低注水成本提高注水开发效益为目标,提出了低渗透油藏注水水质优化方法,这一水质优化思路和方法具有广泛应用前景。
Water injection is the most widely used oilfield development method and secondary oil recovery method both at home and abroad. It is very important to ensure the normal injection of oilfield to achieve the expected oilfield development effect, especially for low permeability sandstone reservoirs. A large number of studies have shown that the main influencing factors are the quality of injected water, water injection process and management level. According to the characteristics of low permeability reservoirs, on the basis of comprehensively considering the compatibility of injection water quality, water absorption capacity of injection wells, oil injection requirements, water treatment costs, injecting water injection costs and injecting water comprehensive costs, Evaluation as a means to reduce the cost of water injection to improve water injection development efficiency as the goal, put forward a low permeability reservoir water quality optimization methods, this water quality optimization ideas and methods have a wide range of applications.