The application of elastic waves induced through seismic excitation (stimulation) to increase the oil recovery from a hydrocarbon reservoir as an enhanced oil recovery (EOR) technique is currently in its infancy. Seismic stimulation is a cost-effective and efficient method for enhancing oil production from waterflood reservoirs by increasing areal sweep performance and decreasing water cuts, hence extending the productive life of a mature oilfield. It has great prospect in offshore fields where technological difficulties and restrictions hinder the deployment of other EOR methods. Herein, this study investigates the effects of a direct impact of seismic SH-wave on a 2D transient behaviors of an oil reservoir with a half-plane model. In the time domain, a half-plane model containing a poroelastic oil reservoir is formulated using a boundary element method (BEM). The model considers complete seismic SH-wave propagation using Ricker wavelet, from a down-hole source via a partially saturated oil reservoir to ground surface receiving points. The model is based on 2D elastodynamic and Biot's dynamic poroelasticity equations. A DASBEM program is incorporated into MATLAB (2022a) to develop a model of wave propagation. The result showed that variable incidence angle affects the frequency and time domain responses, while the depth of the reservoir and porosity influence the amplitude of oscillation. Synthetic seismograms at stations above the oil reservoir indicated attenuation and numerous diffracted waves with various time delays. Multiple SH-wave reflections in the reservoir amplify 3D signals, while at higher dimensionless frequencies, effect of porosity amplify the distant locations. This technique can be utilized as fluid indicator to monitor wave based EOR using SH-wave attenuation, and to detect and visualize the permeability changes in reservoir (impermeable boundaries) during CO₂ plume storage for the purpose of monitoring the safety of CO₂ geo-sequestration.

应用通过地震激励（增产）诱发的弹性波来提高油气藏的石油采收率作为提高石油采收率（EOR）技术目前处于起步阶段。地震增产是一种经济有效的方法，可通过提高面积波及性能和降低含水率来提高注水油藏的石油产量，从而延长成熟油田的生产寿命。它在技术困难和限制阻碍其他 EOR 方法部署的海上领域具有广阔的前景。在此，本研究使用半平面模型研究了地震 SH 波的直接影响对油藏二维瞬态行为的影响。在时域中，使用边界元法 (BEM) 制定包含多孔弹性油藏的半平面模型。该模型考虑使用 Ricker 子波的完整地震 SH 波传播，从井下源通过部分饱和的油藏到地表接收点。该模型基于 2D 弹性动力学和 Biot 的动态多孔弹性方程。DASBEM 程序被纳入 MATLAB (2022a) 以开发波传播模型。结果表明，可变入射角影响频域和时域响应，而储层深度和孔隙度影响振荡幅度。油层上方台站的合成地震图表明衰减和大量具有不同时间延迟的衍射波。储层中的多次 SH 波反射放大了 3D 信号，而在更高的无量纲频率下，孔隙度的影响会放大远处的位置。该技术可用作流体指示器，以使用 SH 波衰减监测基于波的 EOR，并检测和可视化 CO2 期间储层（不可渗透边界）的渗透率变化₂羽流储存，用于监测 CO ₂地质封存的安全性。