Prime Rock Resources & New Dawn Energy Joint Venture - Masters Creek

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Give me a soap box and "watch out"!

Same here!   Great answer and at least we are seeing more interest & activity here.   And I imagine some of these guys love a challenge & that is what drives them along with the passion of the oil patch.

Jay is there any MC areas that are not depleted?

I am sure that Jay can expand on this, but considering that the AC in MC is a naturally fractured reservoir, any area of production will be tied to some degree of depletion of these fractures. And the depletion will vary and not be consistent.

Some depleted fractures have such a low pressure that it is like drilling into a vacuum - fluids will be sucked in like a tidal wave if not controlled.

Prime Rock Resources LA LLC proposed drilling units in Sugartown, LA area.   See attached.

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Interesting to say the least. These units are being permitted for "EagleFord" and not Austin Chalk. The reference interval (Pan Am Burton) clearly shows their target as the section BELOW the base of the AC. This interval (which in Texas is called the Eaglebine by Operators) is a mix of organic rich mudstones (source rock and unconventional reservoir) and interbedded and often finely laminated Woodbine clastics (sandstones). In the reference well (which is several miles north of these units), Pan Am did some testing in this interval after failing on their deeper primary target. Their testing showed gas on DST's (mostly gas cut mud) and one reference to a small flare. This is apparently a VERY overpressured section in that it was taking 15.5# MW to log this interval (this equates to over 12,000# of BHP or a 0.8#/ft pressure gradient. I would bet that they encountered a lot of gas while drilling this section (I don't have a mud log to confirm that).

This interval will be about 700' to 1000' deeper in the area of the proposed units. There is no production in this new unit area.

Pure exploratory effort.

Hope they get a rig out here before the end of the year - this will an interesting well to watch.

Interesting too is LA DNR you have to search by Applicants Name to have it come up.  Date range will not doit and it is listed as Sugartown Field.

Sugartown Field is an Austin Chalk producing area that is mostly located due west of these new permits. I figure they had to call this area something as to field name - Skip can expand more on this issue.

But bottom line is that they are not chasing the Austin Chalk (at least not now with these new permits). But they will get a good look at the AC on any wells they drill and will have the opportunity to get some rock and log data to better understand that section.

Lisa, if you scroll through the public hearing list to the 6/18/2019 docket, you should find the applications.  There are two Sugar Town Field applications by Prime Rock Resources.  The OOC allows operators to make applications for units including the proposed field name whether that field is existing or a newly created one.  I suspect that the industry has reasons for separating fields as the preceding or subsequent field orders may impact their plans to explore and develop a given formation or zone.  Keep in mind that the same section can have various wells producing from different formations or zones that are listed in different fields.

Got it, thanks SP!

Rockman I hate to ask dumb questions, but does the Eagleford  run under the Austin chalk everywhere or does the path meander?  Also, is there a picture/diagram of the eagleford?

DC, not a dumb question - especially since there have been NUMEROUS papers written on this subject and the multiple stratigraphic variations associated with the "Eagle Ford" interval.

The attached PDF was close at hand and gives you a decent idea of how the sections are lined up. The strat column on page 3 is the best "go to" diagram for this.

Also note the Eaglebine section on page 4 - this is focused in the Bryan / College Station area. Note the variability across the section (quick key on looking at the log sections - the bright yellow section are sands and silts with no organics while the lighter yellow section tends to be a laminated mix of silts and sands that were dumped into an organic rich mud system).  

In general, the Eagle Ford underlies the Austin Chalk. But as one moves from Mexico to Florida around the Gulf of Mexico, the actual composition of the Eagle Ford section will vary depending on a ton of factors.

  • In some areas (e.g. The S Tx and C Tx EF play areas), the Eagle Ford is composed of a carbonate rich mudstone whose upper section is less organic than the lower section / it is the lower section here that tends to be the main hz target for operators in these areas.
  • As you move into the Bryan / College Station area, the section under the AC becomes more sand due to the influx of sands and silts from a major depositional system dumping into that part of the trend. This creates the "Eaglebine" interval - roughly a mix of Eagle Ford and Woodbine.
  • As you move toward the La / Tx state line and into Louisiana, this Eaglebine interval continues with some variations. This is what Prime Rock is chasing with these new permits.
  • Then as you continue to move eastward across Louisiana and into SW Mississippi, the Eagle Ford evolves in the TMS.

The above summaries are just that - summaries. There are a ton of local variations and unique areas along this entire trend.

And one of the main keys as to being successful in the Eagle Ford or Eaglebine is knowing where to put your horizontal wellbores so as to optimize exposure to maximum O&G in place as well as a brittle section that can be frac'd and stimulated sufficiently to give you economic wells.

The Eagle Ford (or TMS) is a world class source rock that has generated a lot of the O&G along this trend (via migration of O&G into shallower formations). But enough O&G is left behind in the source rock to still be unconventional targets (as has been widely proven).

Also note that parts of the AC are source rocks.

Hope this helps.

Or hopefully doesn't further confuse everyone!

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