High temperature and high pressure two-dimensional physical simulation experimental device

High temperature and high pressure two-dimensional physical simulation experimental deviceIt is a high-precision indoor physical simulation research equipment for oil and gas development and carbon dioxide geological storage fields. Its core is used to accurately replicate the in-situ high-temperature, high-pressure, and sealed real geological environment of underground strata. The device relies on two-dimensional visualization simulation technology to fully restore the geological occurrence status of the water zone, gas zone, and oil and gas coexistence zone in the formation. It accurately carries out a series of physical simulation experiments such as oil and gas reservoir development, carbon dioxide geological storage, and carbon driven oil and gas efficiency enhancement. At the same time, the entire process of automatic real-time monitoring, continuous collection, and accurate recording of core data such as fluid migration, pressure changes, saturation evolution, etc., solves the technical shortcomings of traditional experimental equipment such as single working conditions, one-sided data, and inability to restore the real development process of the formation. It is the core experimental equipment for oil and gas geological development and carbon storage technology research.

This device has adaptability to working conditions and experimental universality, and can flexibly simulate various geological conditions of reservoirs with different burial depths, porosity, permeability, and heterogeneity, covering various types of oil and gas reservoirs such as conventional sandstone reservoirs, tight reservoirs, carbonate reservoirs, etc. At the simulation level of development methods, it can not only accurately reproduce the dynamic processes of traditional oil and gas development processes such as water flooding gas, water flooding oil, and gas water alternating water injection coupling, but also carry out special simulation experiments of new low-carbon development technologies such as carbon dioxide geological storage and carbon dioxide flooding oil efficiency enhancement. By realistically reproducing the entire process of underground fluid displacement, migration, aggregation, and diffusion, effectively simulating the adsorption, dissolution, and storage stability mechanisms during carbon dioxide sequestration, as well as the mechanisms of viscosity reduction, phase mixing, and edge expansion and efficiency enhancement during carbon dioxide oil displacement, we aim to improve the recovery rate of oil and gas reservoirs CCUS (Carbon Capture, Utilization, and Storage) technology research and development provides core experimental support.

At the level of experimental monitoring and data collection, the device is equipped with a high-precision global monitoring system, which can dynamically capture the interior of the experimental model in real timeOil gas water three-phase saturation field, formation pressure fieldThe spatial distribution characteristics and temporal changes of carbon dioxide, crude oil, and formation water are accurately tracked throughout the entire process of injection, migration, displacement, and extraction. Different from traditional single point monitoring equipment, this device can achieve two-dimensional planar global visualization monitoring, fully presenting key evolution processes such as changes in fluid distribution inside the reservoir, formation of dominant seepage channels, remaining oil distribution characteristics, and carbon dioxide storage and diffusion range. It truly achieves this at the laboratory scale,1: 1. Restore the complete dynamic process of on-site reservoir development and carbon dioxide geological storage, and make up for the shortcomings of on-site mine monitoring that cannot intuitively observe changes in underground reservoirs.

Based on rich simulation experiment functions and accurate data support, this device can carry out multiple core scientific research work. On the one hand, it can deeply analyze the permeability characteristics, fluid displacement characteristics, and multiphase fluid coupling migration laws of carbon dioxide in complex reservoirs, systematically revealing the core mechanisms of carbon dioxide oil displacement, carbon sequestration, and oil and gas efficiency enhancement; On the other hand, targeted optimization of key process parameters for oil and gas development can be achieved, including optimization of auxiliary oil recovery methods, layout of oilfield well networks, optimization of well structure, maintenance of formation pressure level, injection production speed, injection ratio and other core process indicators. Through multiple sets of comparative simulation experiments, development plans are screened to form a standardized and implementable mining development technology system, which directly guides on-site production operations in oil fields, effectively improves oil and gas resource recovery, reduces development costs, and assists in efficient, low-carbon, and intelligent development of oil fields.

In addition to the core carbon drive and water drive experiments, this device is suitable for indoor experimental research on multiple types of oil and gas EOR, and can comprehensively cover the diversified experimental scenarios such as conventional displacement experiments in water areas, chemical agent displacement experiments, foam displacement experiments, and multi medium composite displacement experiments. By switching experimental media, adjusting temperature and pressure conditions, and matching different experimental modules, multiple experimental modes such as single displacement, composite displacement, and dynamic pressure displacement can be achieved, which are suitable for scientific research needs in various fields such as conventional oil and gas, unconventional oil and gas, and low-carbon development. The experimental coverage is wide.

The overall equipment adoptsModular independent integrated designThe overall system is divided into five core modules: water injection system, model system, metering system, manifold process system, and data acquisition and processing system. Each module has an independent structure, specialized functions, and can be flexibly adjusted, with good scalability and adaptability. Each module does not interfere with each other and operates independently. At the same time, through standardized interface linkage and collaboration, module configuration can be flexibly added, replaced, and adjusted according to different experimental schemes, geological conditions, and research directions. Experimental processes and conditions can be freely switched to quickly achieve differentiated experimental functions such as conventional oil and gas development simulation, unconventional reservoir development simulation, carbon dioxide storage simulation, and composite oil recovery simulation, greatly improving equipment utilization and experimental research and development efficiency.

Among them, the water injection system can achieve constant pressure, constant flow, quantitative and precise water injection, controllable adjustment of injection speed and injection pressure, and stable simulation of formation water injection development conditions; The model system can be equipped with reservoir physical models of different physical properties and sizes, accurately reproducing various underground reservoir structures and geological features; The measurement system has high-precision fluid measurement function, which can accurately calculate the flow rate, volume, and quality data of injected and extracted oil, gas, water, and carbon dioxide media, ensuring the accuracy and reliability of experimental data; The pipeline process system integrates various control valves, pressure resistant pipelines, and pressure regulating components, which can flexibly switch fluid injection paths, regulate system pressure, and adapt to the needs of multi medium and multi process experiments; The data acquisition and processing system can summarize, organize, and analyze real-time monitoring data across the entire area, automatically generate pressure and saturation time series change curves, visualize the experimental process, digitize data results, and provide comprehensive and accurate data support for scientific research analysis, scheme optimization, and technical implementation.