1 reply to this topic

[hccgamer]

Hello,

I'm a new professional trying to get into the oil/gas industry.

Where do gas samplers fit into the process of pulling gas/oil from the ground? I don't believe there is a place for sampling in the upstream process, but once it gets to midstream/downstream, samplers would be present.

My understanding is that the oil wells in a gathering all go through a three phase separator. I'm thinking gas samplers and liquid samplers would go on the outlets of the three phase separators. Then, in some cases, the gas goes from the separator to amine towers or deny units. If that is the case, another sampler would go right before the gas goes to the main line.

Am I close?

Thanks!

[ankur2061]

hccgamer,

Gas sampling may be required at the reservoir end if you are dealing with high H2S / CO2 content gases from the reservoir since these are undesirable contents of any gas stream and an early indication of their presence allows to put in place systems to remove them.

Nowadays a lot of inline-instrumentation provides the water cut and the GOR (Gas-Oil Ratio) of the oil/gas/water multiphase mixtures that flow from a well. Red-eye meters have become very common for this purpose. Refer the link below:

http://www.weatherfo...works/index.htm

Gas sampling may also be required if you have for example a high H2S content in a natural gas stream and you need to inject a H2S scavenger and downstream of the scavenger injection you need to check the H2S content.

For applications where control of water content in the gas is essential for downstream processing a gas sampler may be provided downstream of the gas dehydration unit in order to ascertain the water content of the gas. Hand held automatic dew point meter will require to draw a sample from the gas source to measure the dew point and /or gas specific gravity. Automatic on-line moisture analyzers will continuously draw a small gas sample from the source and provide real-time measurement of gas moisture.

The applications for gas sampling are many. It depends on the type of oil /gas reservoir you are handling and the end processing you wish to do before selling the product.

Hope this helps.

Regards,
Ankur.

Edited by ankur2061, 22 October 2011 - 07:21 AM.