INGROUND CNG INPUT
INGROUND CNG INPUT
(OP)
I have,, like so many others, a natural gas well in the North East 5 miles inland from Lake Erie, PA. that slows significantly in the cold weather. Therefore a solution has been contrived (in my head) to pump the gas into tanks during the warm summer when the well produces hundreds of pounds and unlimited (for my needs) volume.
The question, can anyone tell me if they have heard of using propane takes buried in-ground to advantage the 55 degree mean temperature of the earth. My thoughts were to pump them to approximately 2/3 the rated pressure and at the 1800 foot elevation temp. would control the expansion coefficient.
Any thoughts?!
Thanks,
Neal
The question, can anyone tell me if they have heard of using propane takes buried in-ground to advantage the 55 degree mean temperature of the earth. My thoughts were to pump them to approximately 2/3 the rated pressure and at the 1800 foot elevation temp. would control the expansion coefficient.
Any thoughts?!
Thanks,
Neal





RE: INGROUND CNG INPUT
At 1800 ft under a shade roof structure, you should be able to keep them relatively cool.
Tank pressure is temperature dependent; nothing to do directly with elevation.
What's the flowrates, gas temperatures (not air or soil temperature) and SG in summer and winter?
Cold gas is more dense, maybe you get nearly the same number of lbs mass as in the summer, even with the lesser flow. Have you tried using a line heater to keep the temp up and the hydrates from forming and blocking the flow.
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
RE: INGROUND CNG INPUT
The well was not set up poorly I believe as there was no drip tank before the Big Joe regulator.
RE: INGROUND CNG INPUT
I would think the the pressure and temperature in the reservoir would be independant on outside ambient temperature? I mean even a few feets down the soil temperature is independant and ambient temperaure and although i have heard about shallow gas i allways thought it was a bit deper than that.
Therefore it must be someting else.
Cooling of the topside part of the well and flowlines will ofcourse occur, but this should not cause WHSIP to drop - since more gas from the reservoir should just flow to the well.
Therefore i think the Biginch theroy about hydrates sounds plausible. Maybe its hydrates or even ice that blocks valves or pipes and prevent the gas from flowing? Heating the pipes could clairify this.
Best regards
Morten
RE: INGROUND CNG INPUT
Thanks for the input. My plan is to move the drip tank to pre-regulator position. Hopefully we get better cold weather results.
Current config. attached. Blue arrows pre-regulator, red is regulators, green into and out of drip tank.
Thanks,
Neal
RE: INGROUND CNG INPUT
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
RE: INGROUND CNG INPUT
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
RE: INGROUND CNG INPUT
RE: INGROUND CNG INPUT
Hmmmm?!
RE: INGROUND CNG INPUT
RE: INGROUND CNG INPUT
RE: INGROUND CNG INPUT
RE: INGROUND CNG INPUT
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso