Field development optimization in mature oil reservoirs using a hybrid algorithm
Field development optimization in mature oil reservoirs using a hybrid algorithm
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DOI：
10.1016/j.petrol.2017.05.009
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发表时间：
2017-07
影响因子：
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通讯作者：
Hyungjun Yang;Junyi Kim;J. Choe
中科院分区：
文献类型：
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作者：
Hyungjun Yang;Junyi Kim;J. Choe
已经提出了许多优化方案，以同时优化各种变量，如井位、井作业计划、井类型和井的数量。然而，这些方法大多侧重于固定井型，而没有考虑现有井的改造，针对成熟油田开发提出了一种新的优化方法。由于生产井改为注水井是成熟油田的普遍做法，因此必须同时优化现有所有生产井和加密井的换型方案，以及加密井的数量、位置和作业方案。提出了一种新的混合算法，将差分进化算法(DE)和网格自适应直接搜索算法(MADS)相结合来求解优化任务，通过考虑井型转换，增加了搜索空间的复杂性，但提供了更现实和最优的发展方案。为了优化油田开发，我们在2D合成油藏和3D PUNQ-S3油藏中进行了演示。在这两种情况下，考虑井型转换的优化方法比固定井型优化方法提供了更高的净现值。混合算法也表现出比DE和MADS算法更好的搜索性能。因此，我们得出结论，在成熟油田的经济油田开发方案中，考虑油井转换时间表是必要的。
Many optimization schemes have been proposed to simultaneously optimize various variables such as well locations, well operation schedules, well types, and the number of wells. However, most of these approaches often focused on fixed well type without considering conversion of existing wells.This paper proposes a new optimization for mature oil field development. Since converting from producers to injectors is a common practice in mature oil field, we have to optimize simultaneously type conversion schedules of all existing producers and infill wells as well as the number of infill wells, their locations, and operation schedules. We propose a new hybrid algorithm, which combines differential evolution (DE) algorithm and mesh adaptive direct search algorithm (MADS) to solve our optimization task.By considering well type conversion, it will increase the complexity of searching space but provide more realistic and optimal development plan. We demonstrate it in 2D synthetic and 3D PUNQ-S3 reservoirs for optimal field development. The proposed optimization considering well type conversion provides higher net present value than the fixed well type optimization in the both cases. The hybrid algorithm also shows better search performances than DE and MADS algorithms. Thus, we conclude that consideration of well conversion schedules is necessary for economical field development scenarios in mature oil fields.