论文标题

设计多样性,以提高效率和降低不确定储层条件下的油气孔刺激的风险

Design Diversity for Improving Efficiency and Reducing Risk in Oil and Gas Well Stimulation under Uncertain Reservoir Conditions

论文作者

Cheng, Cheng

论文摘要

液压压裂刺激了储层形成的裂缝群,但加压注射液。然而,由于构造数据的可用性限制,水库所包含的可变性一直不确定,推动不稳定的气体回收以及资源效率低,负责资源稀缺,受污染的水和注射诱发的地震。资源效率是合格的,尽管新确定的能源效率,恢复的规模和相关的环境足迹。为了最大化能源效率,同时最大程度地减少了其“变化”,我们在储层条件下发行了挑选的设计,依赖最佳概率,组装高效率投资组合和低风险投资组合的投资组合组合,通过调整每个投资组合的比例来平衡最佳的变化和效率。相对于一个井的常规设计,在多个井中应用的最佳投资组合组合获得了显着的差异,同时响应于单位投资的更多回收率和提取单位自然气体的环境成本较小,这是显着的实质性降低。

Hydraulic fracturing stimulates fracture swarm in reservoir formation though pressurized injection fluid. However restricted by the availability of formation data, the variability embraced by reservoir keeps uncertain, driving unstable gas recovery along with low resource efficiency, being responsible for resource scarcity, contaminated water, and injection-induced earthquake. Resource efficiency is qualified though new determined energy efficiency, a scale of recovery and associated environmental footprint. To maximize energy efficiency while minimize its' variation, we issue picked designs at reservoir conditions dependent optimal probabilities, assembling high efficiency portfolios and low risk portfolios for portfolio combination, which balance the variation and efficiency at optimal by adjusting the proportion of each portfolio. Relative to regular design for one well, the optimal portfolio combination applied in multiple wells receive remarkable variation reduction meanwhile substantial energy efficiency increase, in response to the call of more recovery per unit investment and less environment cost per unit nature gas extracted.

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