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 adubu on
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jfree1--good link--how I know why some wells that are really bossier shale wells but permitted as Haynesville shale wells in the Carthage field is because the carthage haynesville shale field includes depths 9568'--11,089' by rule under texas rrc approved from DVN Hull unit well #102 in Panola county which is inclusive of upper,middle bossier, and haynesville shale in this field. The stacked lateral rules are also spelled out in this order by rrc dec 2009.
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Permalink Reply by adubu on
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SB--any ideal why it has taken Goodrich more than 6 weeks to drill vertical depth just to start the lateral curve into the horizontal for the haynesville shale on first well?? hope they did not have major problem. I assume they like the log and maybe gas shows going throught the bossier to TVD at the haynesville for reason of decision to drill a lateral in the bossier also
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Permalink Reply by Les Bamburg on -
Adubu, the Bossier Shale and Haynesville Shale are two different formations but included in the same unit. This is the reason the two wells are called "stacked laterals" under the TRRC nomenclature.
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Permalink Reply by king john on
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how will stacked laterals affect the allowables... being that they are in different formations i would think not at all? wouldn't each formation have it's own set of allowables?
kj
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Permalink Reply by Les Bamburg on
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KJ, the two formations are included in the same unit and would have a common allowable.
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Permalink Reply by king john on
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les, i guess i need a little schooling...
in texas, a unit is designated for production/payment purposes and seems to be the same thing as a section, in LA.. ..in LA. the unit seems to deal with a single well. so, with that said, how in the world could a stacked lateral, in different formations have the same allowable? i envision a texas unit as a 3-d piece of pie. each producing zone,formation, having it's own set of allowables and spacing requirements. i read jffree's link on the rules and it doesn't make sense. one more thing, how does a proation unit figure into this equation?
kj
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Permalink Reply by king john on
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thanks hardage. some interesting reading in there, but a couple of things come to mind...
1) this has to do with the barnett shale and "various" east texas counties. i saw no mention of exactly what east texas counties, so how do we know this is applicable in this case?
2) it says the commissioners proation department will assign the allowable for each lateral. that seems contradictory to what the document says in an earlier portion.
3) what and how does the proation department determine an allowable?
kj
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Permalink Reply by Les Bamburg on
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KJ, a unit in Louisiana can contain multiple wells with a single allowable for the unit.
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Permalink Reply by adubu on
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Les B---The bossier and haynesville are both part of the same shale formation and are not two different formations. The Bossier is the upper part and the haynesville is the deepest part of the shale just like the Taylor sands are the deepest part of the Cotton Valley Sands but the same formation similar to the Travis Peak (Hosston) has many levels but same sand. You may prove this wrong if can get comment from one of our east texas geologist on site for I am not a geologist.
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Permalink Reply by Les Bamburg on
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Adubu, most operators consider the Bossier Shale and Haynesville Shale to be two separate formations.
Just to clarify, Cotton Valley is a Group rather than a formation.
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Permalink Reply by adubu on
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Les B--ok if you say so-- but why does rrc texas include the bossier shale as part of the "Carthage Haynesville Shale" field inclusive as one
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Permalink Reply by Les Bamburg on
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Adubu, the TRRC can group multiple formations into a single field. In Louisiana the Bossier Shale Formation and Haynesville Shale Formation are both included in the Haynesville Zone.
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