Core-analysis results: Comprehensive study wells, Devonian shale. Topical report, May 1989
Core-analysis results: Comprehensive study wells, Devonian shale. Topical report, May 1989
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发表时间：
1989-07
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通讯作者：
D. Luffel;F. Guidry
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作者：
D. Luffel;F. Guidry
通过对阿巴拉契亚地区泥盆纪页岩四口综合研究井中采集的539英尺常规岩心进行广泛的岩心分析，并根据开发的新的岩心分析方法，确定了三个重要的结果。首先，孔隙度和游离气空间值较高，特别是在黑色有机富集页岩中。其次，首次在自然流体饱和度和原地压力下测量了气体渗透率。第三，提出了一种利用岩石热解和总有机碳的地球化学性质测定干酪根含量的新方法。结果表明，在干酪根含量较高的岩石中，干酪根含量比通常采用的分析方法--薄片岩相法高出约50%。
Three important results have been determined based on extensive core analyses on 539 feet of conventional core recovered from four comprehensive study wells in the Devonian shale in the Appalachian area, and based on new methods of core analyses developed. First, relatively high values of porosity and free gas space are present, especially in the black organic rich shales. Second, gas permeabilities have been measured for the first time at native fluid saturations and at in situ pressure. Third, a new method of deriving kerogen content has been developed using geochemistry measurements of total organic carbon and rock pyrolysis. Results show kerogen content is significantly higher than that derived from thin-section petrography, which is the analytical method normally used, by about 50% in the kerogen-rich rocks.