Are we finally seeing the Austin Chalk activity we have been waiting for?
Well 1,000,000 barrels have come out of PC with very few wells. Let’s see what happens in PC.
I caution all readers to keep in mind that not all Austin Chalk is created equal as to being prospective for this "new" drilling and completion approach (i.e. frac'ing horizontal wellbores to focus on matrix reservoir instead of the historical "old" approach of non stimulated completions based on tapping open natural fractures).
Key issues that will impact this play working in any area include but are not limited to reservoir quality (porosity and permeability), thickness of prospective zones, presence (or lack of) ash beds / frac growth impediments, hydrocarbon charge, depth, formation pressure, amount of natural fractures present, etc.).
so RM/JAY/SKIP what would be your educated assumption on the AC perm/porosity and thickness of reservoir as it descends off the shelf into a down dip 17000+ feet (Evangeline parish). would a landing in the AC and a 5000' horizontal be more challenging than the shallower wells up closer to the shelf in avoyelles and rapides? Do we just need to wait on a deep test well to answer those questions? thx HC
That would be above my pay grade. I'll leave it for Jay and Rock Man.
,hx Skip. Im just very curious about deeper AC wells 17,000+ feet as i have searched tirelessly to find deep AC wells to no avail.. everything in Texas and across La. arent anywhere near the 18,000ft TVD....
It comes down to the temperatures at that depth. Most likely it would be a gas field that deep.
Deeper AC would be more gas prone, but depending on the overall temperature and thermal maturity, a gas well at this depth may contain a lot of condensate as well as NGL's in any production stream.
One of the best areas to find deep AC wells will be associated with the deep Tuscaloosa Sand production areas in this part of Louisiana. Some of those wells go below 20,000' (I believe) - and the AC will be above the Tuscaloosa Sands
I would expect any serious operator in the AC trend in Louisiana will be drilling a vertical pilot hole / science well to obtain state of the art modern logs, obtain core and have the rock to do key analyses that will be used to determine if drilling a horizontal wellbore is a viable option.
This has been a common practice in may areas of unconventional resource development during the early stages of exploration.
I had a vertical test well here in the Permian and I thought that was the whole enchilada. Imagine my excitement when they cam back with 8 horizontals.
Simple answer is that the deeper the well and TVD of the lateral, the more challenging mechanically it would be to drill said well. A shallower AC lateral would be less challenging, but the quality of the reservoir plus reservoir pressures and potential O&G resources will not be the same at different depths across the area.
It should also be noted that even a shallow well can be screwed up if not done correctly. There are a lot of issues to be considered for any well - nothing is "vanilla" when it comes to drilling a lateral wellbore over a mile horizontally while staying in the property target interval. Regardless of the TVD of that lateral
Thx RM JM for all your input,, guess we just sit tight till they drill the test wells. Petroguard/“Partner” says they will do 4 by Year’s end! Wrapping up their leasing in a Tri-parish area and will have 250-300,000 acres according to landmen working the area.