Physical simulation experimental system for time-lapse earthquakes at different stages of reservoir displacement development

By designing a physical simulation experimental system for different stages of reservoir displacement development, the problems of unclear application effects of time-shift seismic technology in oilfields with thin reservoirs and high water cut, as well as high costs for multiple data acquisitions, were solved. This enabled the acquisition and analysis of time-shift seismic experimental data under the same conditions, thereby improving reservoir recovery.

CN122313764APending Publication Date: 2026-06-30CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, the application effect of time-shift seismic technology in oilfields with thin reservoirs and high water cut is unclear, and the cost of multiple acquisitions is high, making it difficult to repeat the acquisition of complete parameters, which makes it difficult to carry out basic research during reservoir development.

Method used

Design a physical simulation experimental system for different stages of reservoir displacement development, including a reservoir physical model, epoxy resin encapsulation, water tank, seismic physical model data acquisition system, fluid pipeline and fluid separation and metering system, which can conduct multiple time-lapse seismic experiments under identical acquisition conditions, acquire and analyze time-lapse seismic data, and characterize the distribution law of remaining oil.

Benefits of technology

Under the same conditions, time-shifted seismic experimental data were collected and analyzed for reservoir development and displacement processes. The relationship between the remaining oil distribution and development parameters such as displacement fluid type, flow rate, and process was established to help adjust reservoir development plans and improve recovery rates.

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Abstract

This invention belongs to the field of seismic physics simulation experimental technology and discloses a physical simulation experimental system for time-shifted seismic events at different stages of reservoir displacement development. The system includes: an overall physical model comprising a reservoir physical model and epoxy resin encapsulating the model; wherein the reservoir physical model is used to characterize the physical properties of the reservoir; a water tank containing the overall physical model, which is submerged below the water surface; a seismic physics model data acquisition system including an excitation probe and a receiving probe, respectively positioned above the water surface; at least one first borehole and at least one first fluid conduit, wherein the first borehole is vertically positioned within the reservoir physical model to simulate an injection well, and the first borehole is connected to the fluid displacement system via the first fluid conduit. This invention can characterize the distribution pattern of remaining oil under identical acquisition conditions, helping to adjust reservoir development plans and improve reservoir recovery.
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