COMPARING ONE WELL'S POTENTIAL TO ANOTHER WELL.
How can you compare one well to another if they are not tested with the same choke?
Example: SAMPLE #4, RED RIVER, SN238828 tested 23,876 MCFD with a 26 Choke and 7,389# Flow Pressure.
NABORS LOGAN 34H, SABINE, SN238703 tested 6,043 MCFD with a 10 Choke and 8,290# Flow Pressure, with a 9,000# Shut In Pressure.
If a 26 Choke is a hole with a 26/64" diameter opening, and a 10 Choke is a hole with a 10/64" diameter opening, then the 26 Choke is 6.76 times larger in area than the 10 Choke, and will allow much more gas to flow.
Flow pressure will change when you open up the choke, and there will be other variables to figure in, so there may not be a way to actually compare these two wells.
What do some of you others think about this?
Example: SAMPLE #4, RED RIVER, SN238828 tested 23,876 MCFD with a 26 Choke and 7,389# Flow Pressure.
NABORS LOGAN 34H, SABINE, SN238703 tested 6,043 MCFD with a 10 Choke and 8,290# Flow Pressure, with a 9,000# Shut In Pressure.
If a 26 Choke is a hole with a 26/64" diameter opening, and a 10 Choke is a hole with a 10/64" diameter opening, then the 26 Choke is 6.76 times larger in area than the 10 Choke, and will allow much more gas to flow.
Flow pressure will change when you open up the choke, and there will be other variables to figure in, so there may not be a way to actually compare these two wells.
What do some of you others think about this?
Views: 188
Replies to This Discussion
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Permalink Reply by Grillin' - MmmMmm on -
ALongview: the last people you want making predictions of overall recoverable reserves are financial analysts!! Most of them really don't have a clue about how this business works and what it takes to make a nickel in an operation! And they certainly don't want to be caught using mathematical computations!!!!
Put 10 of them in an oil or gas field and I guarantee you at least 5 wouldn't know where they were, what those vessels are for and will want to know where the ornaments are for the christmas trees!
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Permalink Reply by Grillin' - MmmMmm on
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Didn't say analysis of the company. I said "making predictions of overall recoverable reserves". The analysts can take all the numbers and model economic outcomes but their knowledge of oil/gas well performance, reserves, geology, etc. is sorely lacking. I'd suggest you listen to the management folks talk about their plans, test those assumptions/plans using actual data and trained/experienced engineering and geoscience analysis.
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Permalink Reply by Lee on
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Someone with more knowledge on this please jump in, but the test rate you quoted for the Logan well is actually the "DT-1", which SONRIS defines as the "gas well deliverability test". My review of the SONRIS reports indicates that this rate is often lower and sometimes higher than the IP rate determined by the "SDMG2" test ("state gas potential"). The DT-1 reported rates are sometimes significantly lower than the IP rates. Can anyone explain these tests and the correlation?
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Permalink Reply by Spring Branch,mineral owner on
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It is called a "drill stem test".
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