考虑复杂因素的成熟油田储层管理地层流体地球化学监测

M. Shipaeva, D. Nurgaliev, A. Zaikin, V. Sudakov, A. Shakirov, Lutfullin Azat Abuzarovich, B. Ganiev
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引用次数: 0

摘要

在油气开发过程的当前阶段,世界上大多数独特的、最大的油田都处于开发后期。尽管脱碳经济的积极发展和政策,对液态和气态碳氢化合物的需求仍然很高,同时成熟油田的数量不可避免地增加。今天的伏尔加-乌拉尔油气省是一个老的油气产区,大部分油田已经进入了开发的最后阶段。然而,通过引进和开发新的采油技术,监测生产和定位储量,油田的寿命可以延长。其中一项技术是对油井生产进行地球化学监测。其目标是通过对地层流体的地球化学研究,在及时获得油井状态信息的基础上,优化成熟油田的开发,从而及时实施必要的措施。地球化学研究可以识别入井流体的来源,确定井筒结构的破坏,检查井下设备的密封性,进行单独作业,并对区域开发效率进行区域分析。这种类型的研究既适用于具有大量生产井的大型油田,从地质角度来看,这些油田通常具有多层结构,技术复杂,充填,设备和管柱磨损,在某些情况下无法进行研究,也适用于低枯竭油田。说明了地球化学在解决井中局部操作问题方面的可能性。对几个水文地质复合体进行了研究,描述了开发过程中采出水性质的变化。由于这些物体作为一个动态系统的发展,不同类型的水不断注入储层,提高采收率方法的使用以及与储量开发相关的其他技术影响,早期存在的碳氢化合物矿床的地球化学条件的概念正在发生变化。数字革命和行业的现代发展标志着地下水数字地图集的创建,以及允许处理大量数据的专门算法的发展。
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Geochemical Monitoring of Formation Fluids for Reservoir Management Considering Complicating Factors in Mature Oilfields
At the present stage of the hydrocarbon production process, most of the unique and largest fields in the world are at a late stage of development. Despite the active development and policy of a decarbonised economy, the demand for liquid and gaseous hydrocarbons remains high, while of inevitably growing the number of mature fields. The Volga-Ural oil and gas province today is an old oil and gas producing region, most of the fields have already entered the final stage of development. However, through the introduction and development of new technologies for oil extraction, monitoring of production and localization of reserves, the life of the fields can be extended. One of these technologies is geochemical monitoring of well production. Its goal is to optimize the development of mature fields on the basis of promptly obtained information about the state of the wells using geochemical studies of the formation fluid, allowing timely implementation of the necessary measures. Geochemical studies allow identifying the source of fluid entering the well, determining a violation in the wellbore structure, checking the tightness of downhole equipment for separate operation, and performing an area analysis of the area development efficiency. This type of research is relevant both in giant fields with a large stock of production wells, often characterized from a geological point of view by multilayer structure, with technological complexity, packing, wear of equipment and strings, in some cases the impossibility of running gauge for research, and in fields with low depletion. The possibilities of geochemistry for solving local operational problems in wells are shown. Several hydrogeological complexes have been studied, the change in the properties of the produced water during the development process is described. The concepts of the geochemical conditions in the hydrocarbon deposits that existed earlier are changing due to the development of these objects as a dynamic system, continuous injection of different types of water into the reservoir, the use of enhanced oil recovery methods and other technogenic impact associated with the development of reserves. The digital revolution and the modern development of the industry marked the beginning of the creation of the Digital Atlas of Groundwater, the development of specialized algorithms that allow processing large amounts of data.
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