Cleaning porous media
First Claim
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1. THE METHOD OF REMOVING SOLUBLE SUBSTANCES FROM THE PORES OF A POROUS EARTH SAMPLE WHICH COMPRISES THE STEPS OF FORCING INTO THE PORES OF SAID SAMPLE AT ELEVATED PRESSURE A LIQUID SOLVENT CONTAINING A DISSOLVED GASEOUS PHASE, AND THEREAFTER RAPIDLY REDUCING SAID ELEVATED PRESSURE BELOW THE BUBBLE POINT OF SAID GASEOUS PHASE, WHEREBY FREE GAS IS FORMED WITHIN SAID PORES TO DRIVE SAID LIQUID SOLVENT CARRYING SAID SUBSTANCES THROUGH SAID SAMPLE.
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1 Claim
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1. THE METHOD OF REMOVING SOLUBLE SUBSTANCES FROM THE PORES OF A POROUS EARTH SAMPLE WHICH COMPRISES THE STEPS OF FORCING INTO THE PORES OF SAID SAMPLE AT ELEVATED PRESSURE A LIQUID SOLVENT CONTAINING A DISSOLVED GASEOUS PHASE, AND THEREAFTER RAPIDLY REDUCING SAID ELEVATED PRESSURE BELOW THE BUBBLE POINT OF SAID GASEOUS PHASE, WHEREBY FREE GAS IS FORMED WITHIN SAID PORES TO DRIVE SAID LIQUID SOLVENT CARRYING SAID SUBSTANCES THROUGH SAID SAMPLE.
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Current AssigneeCharles R. Stewart
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Original AssigneeCharles R. Stewart
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InventorsStewart, Charles R.
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Application NumberUS03/203,358Time in Patent Office683 DaysField of SearchUS Class Current134/37CPC Class CodesG01N 15/0806 Details, e.g. sample holder...
