dry gas/wet gas

Does anyone on here know or what can you tell me regarding: can they run wet gas and dry gas together in the same pipeline or do they separate it at the well head and use two pipelines?

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Permalink Reply by pg guy on August 5, 2014 at 11:45am
Typically gas going into storage in a depleted O&G reservoir is from pipeline supply, therefore by definition it is dry gas, i.e., gas that has been fully processed for retail sale. However, depending on the nature of the reservoir used for storage, as gas is withdrawn from storage, it sometimes requires additional treatment to re-strip liquids that have come out of the storage rocks along with the gas.
Permalink Reply by Joseph-Ohio on August 5, 2014 at 11:49am

Thanks pg guy.

Permalink Reply by Old Oil Scout on August 5, 2014 at 7:52pm
Gas from the wellhead contains all kinds of impurities. The first step is to run it thru a seperator where liquids contained in the gas stream are removed as the wellhead pressure is lowered. At this point the stream is tested for BTU content. Generally a Btu value in excess of 1150 is too rich to be mixed with pipeline quality gas (1030 Btu), although I know of instances where gas greater than 1150 Btu was mixed with pipeline quality gas. It all depends on the volume flowing and the existence of processing facilities downstream of the meter into the pipeline. Back to the wellhead, gas which has been thru a seperator and is less than 1150 Btu still needs to be dehydrated to remove any water vapor in the gas to less than 7 lbs per Mcf. At this point the gas is "pipeline quality" and can be injected into the pipeline at the meter. The meter is typically the point at which ownership of the gas passes from the producer/gatherer to the buyer (marketer, processor, utility, etc.). Any gas with a Btu content greater than 1,000 Btu has some amount ethane, propane etc that in many cases can be removed in processing plants downstream.

The value of the gas produced is determined by its Btu content. The higher the Btu, the higher the price.
Permalink Reply by Joseph-Ohio on August 5, 2014 at 8:26pm
Thanks for the great info. Old Oil Scout.

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