Fault-Sand Body Matching Through Parallel Displacement Simulation
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Solution Overview
Problem
Existing studies on fault-sand body configurations in oil and gas exploration primarily focus on geometric connectivity, failing to explain the dynamic transport behavior and final distribution law of oil and gas, particularly in unconventional resources where 'jumping charging' phenomena occur, leading to unexpected oil and gas distributions.
Innovation Solution
A method for verifying fault-sand body matching through selective crude oil charging using parallel displacement simulation, involving core samples of varying porosities, experimental water and oil preparation, and controlled pressure simulations to analyze buoyancy-driven oil column heights and power configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If geometric connectivity of fault-sand body configuration is studied, then spatial effectiveness of transporting oil and gas is improved, but dynamic transport behavior and final distribution law of oil and gas cannot be explained
Solution Approach 1:
The patent uses hydraulic simulation to model the dynamic transport behavior of oil and gas through fault-sand body configurations. By injecting fluids under controlled pressures and observing flow patterns, the system captures both spatial connectivity and dynamic transport processes, resolving the contradiction between geometric measurement and dynamic behavior understanding.
Solution Approach 2:
The patent creates physical models (copies) of fault-sand body configurations using scaled representations with analogous materials. These models replicate the geometric and dynamic characteristics of actual subsurface structures, allowing researchers to study both spatial effectiveness and dynamic transport behavior without losing critical information about real reservoir systems.
2Area of stationary object
If high-angle transporting fault communicates with multiple sand bodies, then geometric connectivity is improved, but selective charging behavior occurs causing unexpected oil and gas distributions
Solution Approach 1:
The patent applies local quality by varying permeability, porosity, and other rock properties at different locations within the fault-sand body model. This allows the simulation to capture why oil and gas selectively charge certain sand bodies over others, even when multiple sand bodies are geometrically connected to the fault, thereby explaining the precision of actual oil and gas distributions.
3Reliability
If parallel displacement simulation with selective crude oil charging is implemented, then dynamic matching relationship verification is improved, but experimental complexity increases
Solution Approach 1:
The patent segments the simulation system into modular components: separate injection systems for crude oil and formation water, individual fault-sand body model sections, and distinct measurement zones. This segmentation allows the complex parallel displacement simulation to be constructed from manageable modules, verifying dynamic matching relationships while controlling experimental complexity through systematic organization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method visually reproduces the selective charging process of crude oil into sand bodies, verifying geometric and dynamic matching effectiveness, providing theoretical and practical insights into oil-gas distribution laws and reservoir exploration.
Implementation Method 1
regulating different charging pressures, simulating a vertical oil column height produced by lateral abutting with the fault, and analyzing a fault-sand body power configuration relationship under the action of a buoyancy
Data Source
AI summary
Provided is a method for verifying fault-sand body matching by selective crude oil charging based on parallel displacement simulation. The method includes: selecting a plurality of groups of natural oil-bearing core samples having different porosities and making core columns; testing a charging power and a throat radius corresponding to a first core column, and calculating a vertical oil column height produced by simulated lateral abutting with a fault; mounting the second core column in a clamping simulation system; conducting a crude oil charging saturated formation water core simulation experiment, and simulating a variety of superimposition relationships of sand bodies spatially laterally abutting against the fault; regulating different charging pressures, simulating a vertical oil column height produced by lateral abutting with the fault, and analyzing a fault-sand body power configuration relationship under the action of a buoyancy based on a difference between crude oil charging behaviors in different simulated situations.