stacked laterals---WHO HAS THE KNOWLEDGE TO ANSWER?
experts--tell us about stacked laterals---I assume they are mutiple lateral legs at slightly different depths in same formation like bossier shale upper vs lower vs haynesville---but are they from same vertical hole or do they require drilling another well vertical bore and then lateral horizontal leg off into same formation one on top of the other. I looking at well that was permitted by GoodRich Petroleum in NNE Shelby county the R Dean Hays (SL) #1H and #2H. The plat look like drilled off same pad site but can not tell if same vertical hole or what---I assume this is good sign they found something good is 1st well that was spud about 5-6 weeks ago and #2H (SL) permitted today--look forward to reading knowledgeable reply to this discussion
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Replies to This Discussion
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Permalink Reply by MARG on
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Les and adubu, please help me! I was told that the higher the porosity a rock formation, the more oil and gas its pore spaces can contain. I know you are correct in saying hydrocarbons can be lost and that the clay content matters, etc. , but did I learn this incorrectly? I have interest near the Dean Well, and I was happy about the porosity percentage. I had read that La. had 8-12% and decided the Dean was better. I am east of the Dean and in neighboring units. Thanks to all of you who provide info, news, updates, etc.!!!!
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Permalink Reply by adubu on
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MARG--Hope it is good sign---I am 2 miles SSW in the north part of the Joel White 774 around hyw 7
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Permalink Reply by MARG on
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This Dean Well is between 84 and 7 . I am due east of 7 and in two different units which are just a block or so from 7. My own land is about two miles east, but I called Goodrich when I saw the permit as I have interest in Pennington, but it is on the Sabine, and they were very nice. They did ask my surveys, etc. and told me I was their neighbor with one of them, and I told them they were welcome on my place to visit. LOL Their 903 local like number was very polite, etc
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Permalink Reply by Les Bamburg on -
MARG, although the Goodrich wells are likely good they did not provide the average porosity for the entire Haynesville Shale interval. The 8-12% was just a general range for the Haynesville Shale and was not specific to LA or TX.
You are correct that porosity is one of key factors in determining the amount of natural gas in place along with several other factors.
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Permalink Reply by Skip Peel - Mineral Consultant on
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adubu, the only one of your questions with which I have personal knowledge is shale thickness. The shale under North Caddo Parish is 300' thick. Unfortunately it was the first area explored that produced disappointing wells due to high clay content. I would hazard the guess that to some extent porosity and permeability are associated in that high porosity (size of pore spaces) usually exhibits relatively high permeability (the measure of connection between those pore spaces).
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Permalink Reply by adubu on
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Skip--in general the higher the porosity then the greater the storage capacity in the rock reservoir for gas and oil? The clay I assume would not hold any hydrocarbons so the more clay the less gas? maybe ShaleGeo--Jay-- our member geologist will comment. The total shale Bossier+Haynesville is 314' thick. (Bossier 188')
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Permalink Reply by Skip Peel - Mineral Consultant on
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Yes, the higher porosity, the larger the pores. Of course to be of any value those pores must contain hydrocarbons. The measure of that I think is GIP (Gas In Place). However only a percentage of the GIP is recoverable.
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Permalink Reply by adubu on
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Skip and Les B -- the higher the porosity then the great GIP % that is recoverable then--yes---of course gas most be in the pores. Plus must have good permeability also and that is place a good expert frac job is important.So I am I understanding this correctly? So if the shale across in NE Shelby has as much Hydrocarbons as the La. shale due east then the Goodrich well if completion goes well it should be excellent well--yes
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Permalink Reply by Skip Peel - Mineral Consultant on
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Within the aerial extent of the shale portion of the Haynesville formation petrophysical characteristics vary. And may change significantly over a relatively short distance. I do not track E. TX. so I'll let Les B. take it from here.
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Permalink Reply by Les Bamburg on
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Adubu, recovery of original natural gas in place is not really a function of porosity and porosity does not necessarily translate to initial flow rates or well profitability. Many additional factors are involved that factor into flow rate, gas recovery and well profitability.
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