How to solve the problem of crystalline salt clogging in the dehydration units of natural gas stations?
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After being extracted from the wellhead, natural gas undergoes heating, throttling, and separation at the gas gathering station before entering a dewatering unit for dehydration. Since natural gas is produced from gas wells along with large amounts of briny formation water, the separators installed at the facility are not able to completely remove the free water from the gas. A significant amount of free water, along with unremoved saturated water, enters the downstream dehydration units. The salts present in this highly mineralized water combine with the desiccant (TEG) to form solid crystalline masses that clog the circulation pipes in the dehydration units, thereby affecting production. The main measure taken in our gas field is to add another separator before entering the dehydration unit to improve water separation, which has achieved some effect. May I ask if there are any other methods to address the blockage of crystalline salts in the dehydration unit?
I am also interested in this situation; please ask the experts on the forum to provide an answer.
The common method is to wash it with water and then dehydrate it again! The water to be injected for washing needs to be determined based on the actual conditions
The usual method is to use methanol for thawing; if salt crystallization occurs, one can only raise or lower the temperature to avoid staying within the range where salt crystallization takes place. Last edited by printer on 2008-5-9 14:35.]