Well Depth ~ Well Plat Map ~ SPUD Report ~ PSI at Well Head

I wonder if anyone here can tell us information about how to find out actual well depth. I have a state suppied well plat map that shows the depth of a well to be 8300 feet. However an original SPUD report shows the depth at a 5935. Which one is correct?

 

In regard to Well Head PSI of gas recorded.  I know of a vertical well that has a PSI of 3300 on the gage at this time at the well head. The well was drilled in 2008 and has not been tampered with since. I have been told that wells in Bradford County in the same condition have an average PSI of about 2500.

 

Does anyone know what an average PSI might be in Tioga County for a vertical well that has no horizontal wells?

 

Does anyone know if there is a correlation between vertical well depth and strength of PSI at the well head?

 

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Replies to This Discussion

Permalink Reply by Ann Ticopa on November 28, 2011 at 4:28pm

When I browsed the ytd Permits spreadsheet a couple months ago, something like 12% were to Drill Deeper.  So you might check the permits to see if there has been a second one issued. 

I don't know if PSI necessarily is an indicator of the quality of a well.  For example, a truck tire inflated to 30 psi contains more gas than a a bicycle tire at twice the pressure.  

 

Permalink Reply by scott brion on November 29, 2011 at 6:39am

Hi Josie,

Assuming that you are asking about a vertical well and given your 2 choices , the well is probably 5935'.  8300' sounds too deep for Marcellus in Tioga county.  If you are referring to a Hz well, both numbers could be right.  total depth (TD)  can refer to the total length of the well bore.  Total Vertical Depth (TVD) is how for below ground the well goes and does not take horizontal direction in consideration.   Not sure what you refer to as a "SPUD Report."  There is a a Well Record and Completion Report that is submitted to the DEP for each well.   This document should give you the total depth drilled (TD).  It also has a formation log which can provide you a close estimate of TVD.  Which well are you looking at?  I have some of the Reports and would be happy to forward to you.   

Permalink Reply by Doug Pierson on December 10, 2011 at 11:26am

Scott, SPUD seems to be some industry slang that means the drilling commence date - i.e. spud date.  Of course, I wouldn't know a spud if I saw one.  Anyway...some links...

http://www.dep.state.pa.us/dep/deputate/minres/OILGAS/RIG11.htm

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Permalink Reply by paleface on November 30, 2011 at 11:23am

 Josie what town is the well in? I think the5935 is the depth and 8300 is the total lenth of vertical and horizontal,according to Homer who is not on this sight anymore he was a driller he said 2900 was a good well so yours sounds like a good one?

Permalink Reply by Josie on November 30, 2011 at 4:38pm

Hi Mr Paleface,

 

The well was never fracked to the best of my knowledge.

 

Permalink Reply by paleface on November 30, 2011 at 8:40pm

 Josie what town is the well in?

Permalink Reply by Josie on December 1, 2011 at 8:44am

Delmar Township

Permalink Reply by paleface on December 1, 2011 at 8:53am

 Josie they usually frack when its ready for production,when there is a line to hook into.

Permalink Reply by jeff k on December 1, 2011 at 12:11am

Hi Josie:

  The only info I can offer is the well on my property (horizontal) has a static pressure of 5000 psi... A glycol system was installed to solve freezing issues at the well head . They also had some of their other wells with similar pressures previous to ours and flowed very good per day figures initially. It will be interesting to see how they hold up after a year or more. Ours is only flowing for a month, so IHNC what the mmcf/day figure is yet.

(Covington area)

Jeff 

Permalink Reply by Josie on December 1, 2011 at 8:46am

Hi Jeff: Do you know what the PSI at wellhead we prior to the horizontal being drilled?

Permalink Reply by jeff k on December 1, 2011 at 11:27pm

  The well was drilled with a horizontal drilling rig from the start and fraced right after.

 

Permalink Reply by Brian Day on December 1, 2011 at 10:26am

I am being imaginative here, but if the initial vertical was 5000 to 5500 feet down, that would only leave a horizontal of some 2000 feet.  This is less than half a mile.  Also, I think that a differrent, bigger, more complex rig is required to drill the horizontal, so why bring one in for a single, half mile leg?  On the other hand, the Utica is down there at maybe depths that you are talking about.  Are these deeper wells in production yet?

I've also been looking at how the oil/gas deposites are structured in the Blackriver-Trenton formation.  3D sesmic is very important to hit the long, narrow troughs created by deep faulting and the subsaquant replacement of limestone rock with dolomite.  With gas prices so low and some of the western and northern areas of Tioga County perhaps being not quit as high producing wells, perhaps Shell is thinking "why not see if something more productive or valuable lies beneath the Marcellus to pay off our investments in the future.  Sure, we'll take the Marcellus, but we'll know what we've got for the future and put in the proper, corresponding infastructure.  Again, this is just imaginative, wishful thinking.

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