Comments on: Gamma Ray Geophysical Logging in Coal Reserve Evaluation http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/ Mining, Clean Energy, Going Green to Climate Change Tue, 31 Jan 2012 06:30:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Emmanuel Okeke http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-83570 Emmanuel Okeke Mon, 12 Sep 2011 18:24:15 +0000 http://coalgeology.com/?p=56#comment-83570 Pls send me e-mail, complete detail on coal reserve evaluation technique. I need it. Pls send me e-mail, complete detail on coal reserve evaluation technique. I need it.

]]> By: Sushil ranjan http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-58320 Sushil ranjan Tue, 01 Mar 2011 13:33:40 +0000 http://coalgeology.com/?p=56#comment-58320 i am working at jharia coalfield in india. generally Jhama/Burnt Coal(natural coke) formed by heat affecting of coal due to igneous intrusion(generally by mica peridotite or Bronjhonite). i am working at jharia coalfield in india.
generally Jhama/Burnt Coal(natural coke) formed by heat affecting of coal due to igneous intrusion(generally by mica peridotite or Bronjhonite).

]]> By: Editor http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-19298 Editor Fri, 03 Dec 2010 14:23:53 +0000 http://coalgeology.com/?p=56#comment-19298 I work mainly in Appalachian Coal field and almost never seen any coal that has experienced enhanced temperature. But I would guess that with increasing heat, you would lose moisture content and possibly some of the volatile matters of the coal seam thereby increasing the density of the coal. So, your gamma signature should still look like normal coal with little higher density. You can check average density of high grade anthracite to get a feel for the density curve. If you are working in a particular region, let me know. If in the US, we may have done some e-logging. I work mainly in Appalachian Coal field and almost never seen any coal that has experienced enhanced temperature. But I would guess that with increasing heat, you would lose moisture content and possibly some of the volatile matters of the coal seam thereby increasing the density of the coal. So, your gamma signature should still look like normal coal with little higher density. You can check average density of high grade anthracite to get a feel for the density curve.

If you are working in a particular region, let me know. If in the US, we may have done some e-logging.

]]> By: Glynne http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-18766 Glynne Wed, 01 Dec 2010 06:47:39 +0000 http://coalgeology.com/?p=56#comment-18766 Could you tell me if there is any difference shown on a geophysical log (gamma) from a coal affected more by heat during coalification compared to other coals, thanks Could you tell me if there is any difference shown on a geophysical log (gamma) from a coal affected more by heat during coalification compared to other coals, thanks

]]> By: Ankan Basu http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-713 Ankan Basu Sun, 28 Mar 2010 16:05:13 +0000 http://coalgeology.com/?p=56#comment-713 Go by the depth. Find out the inflection points and go with it. I will elaborate later this evening. Go by the depth. Find out the inflection points and go with it. I will elaborate later this evening.

]]> By: Puput rudianto http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-710 Puput rudianto Sun, 28 Mar 2010 11:29:30 +0000 http://coalgeology.com/?p=56#comment-710 Dear friend, I want to know, why do you using gamma ray for evaluation coal reserve and how do you read thickness from gammaray, from High gamma or lowwest gamma. Please send me email about it. Thanks Dear friend, I want to know, why do you using gamma ray for evaluation coal reserve and how do you read thickness from gammaray, from High gamma or lowwest gamma. Please send me email about it.
Thanks

]]> By: Bailochan Choudhury http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-153 Bailochan Choudhury Tue, 08 Sep 2009 07:07:54 +0000 http://coalgeology.com/?p=56#comment-153 Dear frind, I want to know that what is the source used in the sonic tool when we use Cased hole logging at CBM exploration. Dear frind, I want to know that what is the source used in the sonic tool when we use Cased hole logging at CBM exploration.

]]> By: Vian http://coalgeology.com/gamma-ray-geophysical-logging-in-coal-reserve-evaluation/56/comment-page-1/#comment-97 Vian Sun, 26 Apr 2009 00:32:55 +0000 http://coalgeology.com/?p=56#comment-97 Hello Please Send me email article lithology description.. Please Hello Please Send me email article lithology description..
Please

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