Hydrate Reservoir Permeability Measurement Device
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Solution Overview
Problem
Current experimental devices cannot measure the horizontal/vertical permeability of hydrate reservoirs, which is crucial for understanding the impact of hydrates on gas flow performance and carbon dioxide distribution during methane replacement with carbon dioxide injection.
Innovation Solution
A device and method that include a cooling water/saturated methane water tank, water injection pump, methane gas tank, booster pump, air compressor, high-pressure gas tank, back pressure valve, data acquisition instrument, and a hydrate reservoir horizontal/vertical permeability measuring apparatus, allowing for the measurement of permeability by simulating hydrate formation and using differential pressure gauges and a data acquisition system to apply Darcy's Law.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional experimental devices are used to measure permeability, then general permeability measurement is possible, but horizontal/vertical permeability measurement capability is lost
Solution Approach 1:
The device segments the permeability measurement into distinct horizontal and vertical components by providing separate inlet and outlet configurations. The horizontal permeability is measured through left and right inlets/outlets, while vertical permeability is measured through top and bottom inlets/outlets, allowing independent measurement of each directional component.
Solution Approach 2:
The device transitions from conventional single-direction permeability measurement to multi-dimensional measurement by incorporating both horizontal (left-right) and vertical (top-bottom) measurement capabilities within a single apparatus, enabling comprehensive directional permeability assessment.
2Measurement precision
If hydrate reservoir conditions are simulated for accurate permeability measurement, then measurement accuracy improves, but hydrate decomposition occurs
Solution Approach 1:
The device maintains hydrate stability during measurement by precisely controlling temperature and pressure parameters. The system adjusts these parameters to match the hydrate phase equilibrium conditions, ensuring that the hydrate structure remains stable throughout the permeability measurement process while still simulating reservoir conditions.
3Measurement precision
If complex equipment is used to enable horizontal/vertical permeability measurement, then measurement comprehensiveness improves, but device complexity increases
Solution Approach 1:
The device achieves multi-functionality by integrating both horizontal and vertical permeability measurement capabilities into a single apparatus. The reaction vessel can accommodate different inlet and outlet configurations to measure both directional permeabilities, eliminating the need for separate devices and reducing overall system complexity.
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
Enables comprehensive measurement of horizontal/vertical permeability under controlled conditions, reducing hydrate decomposition and facilitating effective gas flow analysis, thereby improving the understanding of hydrate reservoir performance.
Implementation Method 1
a gas enters a cooling water/saturated methane water tank through a bubbler and the methane gas dissolves in the water sufficiently to produce methane water
Implementation Method 2
the water injection pump and the high-pressure gas tank are both in communication with an inlet of the hydrate reservoir horizontal/vertical permeability measuring apparatus
Data Source
AI summary
The present invention discloses a device and method for measuring a horizontal/vertical permeability of a hydrate reservoir. The device includes a cooling water/saturated methane water tank, a water injection pump, a methane gas tank, a booster pump, an air compressor, a high-pressure gas tank, a back pressure valve, a gas tank, a data acquisition instrument, a constant-temperature water bath and a hydrate reservoir horizontal/vertical permeability measuring apparatus provided in the constant-temperature water bath, where the cooling water/saturated methane water tank is provided with a water circulation inlet and an intake line at an upper part and a water circulation outlet at the bottom; the intake line is provided thereon with an intake control gate valve; the bottom of the cooling water/saturated methane water tank is in communication with the water injection pump.