Replies to This Discussion

Permalink Reply by HMI on December 15, 2010 at 7:23

I'm not believin' this. Did Jack Blake actually refer to himself in the first person? And in my thread? Wow!  ......J/K Jack, gotta give you a hard time. Thanks for the input.

 

The Serial number on this well is 239947 for those that want to take a peak at it and cast their two cents on it.

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Permalink Reply by Les Bamburg on December 15, 2010 at 11:43

HMI, I say the shut-in pressures shown are errors as the shut-in pressure should be higher than the flowing pressure.

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Permalink Reply by Jack Blake on December 15, 2010 at 12:39

jack agrees that the S/I pressure is always more that the flowing pressure.

Jacks initial well data on  sec 21 t10n   r11w  MM #21-1:

SICP-9400#

FCP-8000#

choke- 30/64"

15 mmcf/d

water rate - ?

I got this data from a contact on GHS.  It has not been posted on SONRIS yet. 

GHS rocks howled Jack Blake!!!!!!!!!!!!!!!

 

 

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Permalink Reply by Jack Blake on December 15, 2010 at 12:48

Looks like a nice well. Jack wishes SWEPI had his well choked back like CHK has yours choked back.

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Permalink Reply by Skip Peel - Mineral Consultant on December 15, 2010 at 13:12

Is IP envy beginning to be replaced by choke envy!  LOL!  I agree Jack.  If members will look back at the Locations and Completions discussion topic posted on Sunday, they will find a majority of the announced wells on restrictive choke settings in their initial completion report.

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Permalink Reply by Robert Duke on December 15, 2010 at 8:16

Hi Jack,

Thanks for the "range of possibilities in your experience" explanation.  So the upshot of your statement is that any number up to 196 (which is a little wierd; 192 would be 3") could be in 64ths of an inch?  I am presuming in a dual pressure drop scenario, the most restrictive choke would be listed?

 

Actually I am more interested in the freezing aspect of this - seems that wet wells could easily suffer from icing at the choke, thereby being more restricted than intended?

 

Finally, what about the auto-chokes, or whatever, with software, calibrated in % opening that were mentioned by an earlier poster and reiterated by me?  Ever encounter those?

 

I have always wondered about chokes, as to whether they specified an absolute opening size (most comparable and logical, it would seem to me), or if they indicated a degree of choking of a pipe of unspecified size with gas flowing (tubing or whatever); this gets harder to figure, as in that scenario 64/64 is wide open, pipe size unspecified, 32/64 is half open, but this "half open" corresponds to a cross sectional area at the choke of 25%, not 50%.

 

Sorry for making this complicated; just seems if you don't have the denominator, there may still be scenarios where you cannot assume it is 64.

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Permalink Reply by Robert Duke on December 15, 2010 at 9:36

Hi Jack,

Probably best to ignore the musings in the 4th paragraph above - I was simply trying to allude to prior confusion; the real remaining issue has more to do with whether a % interpretation, in the absence of a denominator, is ever a possibility.  You have pretty much clarified that limits on the diameter of the pipe running into the choke are not 64/64 inch...  I guess that does raise another question - is there a standard "coiled tubing" size, and are these always at some point installed? (I could add "and what function does it really serve" - latching on to someone here who seems to actually know what all the parts are, and what they do :-)

Thanks much - Robert 

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Permalink Reply by young land owner on December 15, 2010 at 9:48

On my well sec 8 16n 15w they got the choke at 80. wtf??

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Permalink Reply by Jack Blake on December 15, 2010 at 12:41

it's on an 80/64" choke. 

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Permalink Reply by Les Bamburg on December 15, 2010 at 17:11

Jack, more likely that it is a typo or other error.

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Permalink Reply by w.r. frank on December 17, 2010 at 4:29

I have a CHK well on which I get daily production reports. After the first two or three days, the choke size reporting changed from 22/64 to 80. When I inquired, I was told the designation "80" was approved by the State for "flow control chokes." It seems that the choke is adjusted by software to produce a desired volume per day based on flow rates and pressure.

 

The first 30 days produced an average of 9,597 mcf/d; second thirty days at 9,414 mcf/d; third 30 days at 9,870 mcf/d. I wish I knew the FCP, but I sure like the decline rate. One day test on third day of production was 24 hour IP of !7.782 mmcf. Nice well and good example of "restricted choke."

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Permalink Reply by Les Bamburg on December 17, 2010 at 4:39

Frank, thanks for the information.  So the choke will function similar to a an infinitely adjustable control valve.

 

Most of Devon's test results in East Texas are reported with a choke size of "Adj" for adjustable.   

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