Rarefied piezometric uptake apparatus and method for measuring gaseous uptake
| DWPI Title: Rarefied piezometric uptake apparatus for measuring gaseous uptake for solid sample i.e. geologic sample, has dosing chamber selective fluid communication with uptake chamber having geometry that permits insertion of solid sample with spacing between solid sample and wall |
| Abstract: A rarefied piezometric uptake apparatus and method for measuring gaseous uptake for large solid samples with little or no sample preparation. Past systems and methods require extensive sample preparation. The method includes providing a rarefied piezometric uptake apparatus having a dosing chamber and uptake chamber in an improved selective fluid communication. The apparatus and method improve the measurement of gaseous uptake into solid samples resulting in improved prediction of gas migration through solid samples such as geologic formations. |
| Use: Rarefied piezometric uptake apparatus for measuring gaseous uptake for a solid sample i.e. geologic sample, for predicting gas migration through geologic features and/or gas reservoir capacities. |
| Advantage: The apparatus permits the measurement of the sample with little sample preparation and large sample sizes, measures adsorption kinetics and equilibrium properties for solid samples including geologic samples, and avoids convolution of transport rates in the pores with transport in a system. The sample chamber is oversized relative to ordinary helium porosimetry to provide clearance between the sample and chamber walls. |
| Novelty: The apparatus (100) has a dosing chamber (101) selective fluid communication with an uptake chamber (103) having a geometry that permits insertion of a solid sample with a spacing between the solid sample and a wall (107) of the uptake chamber. A vacuum source (109) is arranged to draw a medium vacuum on the dosing and uptake chambers to induce rarefiled flow in sample pores. A pressure measurement device i.e. capacitance manometer, (111) is arranged to measure pressure in the dosing chamber. The spacing between the solid sample and the wall is sufficient to permit viscous flow of gas around a surface of the sample and limit the flow of gases in the sample pores to rarefied molecular diffusion. |
| Filed: 12/16/2021 |
| Application Number: US17552924A |
| Tech ID: SD 14931.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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