Replies to This Discussion

Permalink Reply by jffree1 on March 25, 2011 at 11:04

A somewhat (minutely) faster way to search would be to choose the county you want to look at.  When that list comes up, go to the "Submit Date" column and click it twice to sort by the submit date.  Clicking once sorts oldest to newest.  The second click puts the most recent submissions at the head of the list.

Permalink Reply by Steve Henderson on March 25, 2011 at 13:23

Got it!! Thanks, you two, you are so helpful for us under-educated souls.

Permalink Reply by ken christian on March 25, 2011 at 14:20

Is there any chance the Haynesville layer extends this far south?

Permalink Reply by jffree1 on March 25, 2011 at 14:54

Where are you ken?  Are you talking about the Hwy. 103 area around the A-17 well?

Permalink Reply by ken christian on March 25, 2011 at 15:10

Yes, I was referring to the area of the A-17 well.

Permalink Reply by jffree1 on March 25, 2011 at 15:30

I think that, if there is Haynesville in this area, it may be thinning out.  We just won't know until there are more wells drilled.  But I wouldn't worry about it yet.  The Bossier appears to be good.

Permalink Reply by Steve Henderson on March 25, 2011 at 13:54

Now that I can see the numbers, here is what I see for the wells near A-17:

 

A-17      18/64 choke    10,464 MCF/day

A-43 2H 14/64 choke     8,928 MCF/day

A-43 1H 28/64 choke    17,040 MCF/day

A-398     27/64 choke    23,424 MCF/day

 

Looks like A-398 is the champ.

 

Can any of you math majors come up with a way to compare the first three based on choke size and say which one is best? I thought I would try the area of the choke (using pi r squared), but it indicated A-43 1H would be 4 times higher flow than A-43 2H (so much for that logic, or 2H is a really good well). If I just use a simple ratio, 1H should be twice as large as 2H, which appears reasonable based on the above numbers. If that logic is good, then I would expect A-17 to be 28.5% higher than 2H. However, it is only 17% higher than A-43 2H, so I suspect the A-43's are better than A-17.

 

Anybody out there have some good math logic?

 

Also, does this indicate that Encana is finally buying into the reasoning that a little over a long time is better than a lot over a short time?

Permalink Reply by jffree1 on March 25, 2011 at 14:40

Steve, I believe the first two wells on your list are bossier completions.  The last two are Haynesville.  The bossiers wells are comparable to bossier wells here and in Nacogdoches County and are better than several reported at the county line field. The reported IP (on the G-1) on A-43 was after six weeks of production.  That well was reported in a press release to be flowing 32.000 MMcfd several weeks before the official test was turned in.  EnCana didn't put out a press release on A-398 but it is a stronger well, in my opinion, and is far and away the biggest producer.  It's really too early to say on the two bossier wells.

 

I'm not a math major and I don't try to extrapolate what the numbers on the G-1 reports might be on a different choke because they are just too inconsistent from one operator to the next. 

Les B tried to teach me a way to do that type of comparison and it was no use because I don't know enough about all the possible variables (that can change the results).   I bet he would tell you his formula, if you ask him, because I sure don't remember it now.

Permalink Reply by Steve Henderson on March 25, 2011 at 14:50

Thanks, Julie. Another dumb question. I am looking at the G-1, and don't see where Bossier or Haynesville shows up. How do you determine this? Is it on yet another form?

 

I thought I remembered A-43 1H being a monster, and then the official numbers came out. Now I understand.

Permalink Reply by jffree1 on March 25, 2011 at 15:23

You have to look at the formation records at the bottom of page two.  Compare that to the reported TVD and the TOP of Pay (items 27 & 28) and be sure to read any remarks at the bottom of that second page.

I just looked at A-43 #1H (again) and it shows the Smackover on the formation record and then states that they talked to someone at RRC about the plug-back depth and kick off point for the lateral.  What that means is they took a look at the Smackover and then plugged back to a place where they could start the curve to land in the Haynesville for the lateral.

You just have to read and read and read some more completion reports.  Bossiers will generally be smaller IPs but some have reported 17, 18, 20 MMcfd on Bossiers (EOG) .  Find some units that have more than one well in the unit and compare those for depth, top of pay and formation record to see the difference.  Some operators will tell the depth of both formations  and others get cute and will put the base of the formation in place of the top of the formation (which is what they are supposed to report).

If you look at enough reports you will start to see the differences in them.

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