加速恢复

为二氧化碳提高采收率和储存而开发的集成式油井网络设计模式

本文探讨了水驱油藏后期生产调整的困难，并提出了一种二氧化碳强化采油和封存的综合井网设计模式。

L油藏沉积环境示意图。
L油藏沉积环境示意图。
来源：IPTC 25000。

本文探讨了水驱油藏后期生产调整的难题，并提出了一种用于二氧化碳强化采油（EOR）和封存的一体化井网设计模式。该井网设计遵循碳捕获、利用与封存（CCUS）的全生命周期，满足二氧化碳强化采油和封存两个阶段的要求。

L油藏地质发育概况

L储层构造位于一系列近东西走向的长轴背斜构造带中。该构造包含多个开发区块，整体完整，且具有良好的封闭条件。

L油藏在垂向上分为两个亚层，L-1和L-2。基于岩心取样实验数据的统计分析，L-1亚层的平均孔隙度为16.2%，渗透率为39.3 md，属于中孔低渗油藏。L-2亚层的平均孔隙度为19.5%，渗透率为193.4 md，属于中孔中渗油藏。

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Enhanced recovery

Integrated Well-Network-Design Mode Developed for CO₂ EOR and Storage

This paper addresses the difficulty in adjusting late-stage production in waterflooded reservoirs and proposes an integrated well-network-design mode for CO₂ enhanced oil recovery and storage.

Schematic diagram of the sedimentary context of the L oil reservoir.
Schematic diagram of the sedimentary context of the L oil reservoir.
Source: IPTC 25000.

This paper addresses the challenge of adjusting late-stage production in waterflooded reservoirs and proposes an integrated well-network-design mode for CO2 enhanced oil recovery (EOR) and storage. The well network is designed according to the full life cycle of carbon capture, use, and storage (CCUS), meeting the requirements of both CO2 EOR and storage phases.

Overview of Geological Development of L Reservoir

The L reservoir structure is in a zone consisting of a series of long-axis anticlines trending nearly east/west. The structure includes multiple development blocks on the plane, is intact overall, and has good sealing conditions.

The L oil reservoir is divided vertically into two sublayers, L-1 and L-2. Based on the statistical analysis of core-sampling experimental data, the L-1 sublayer has an average porosity of 16.2% and a permeability of 39.3 md, classifying it as a medium-porosity, low-permeability reservoir. The L-2 sublayer has an average porosity of 19.5% and a permeability of 193.4 md, classifying it as a medium-porosity, medium-permeability reservoir.

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