The Accumulation Characteristics of the Paleozoic Reservoir in the Central-Southern Ordos Basin Recorded by Organic Inclusions

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Stratum</td><td class="align_center" colspan="2"><i>δ</i><sup>13</sup>C<sub>1</sub> (‰)</td></tr><tr class="thead"><td class="align_center">Range</td><td class="align_center">Average value (amount)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Carboniferous-Permian gas layer</td><td class="align_center">-37.3~-25.5</td><td class="align_center">-33.4 (44)</td></tr><tr><td class="align_left">Gas layer of weathering crust</td><td class="align_center">-36.9~-29.0</td><td class="align_center">-33.6 (90)</td></tr><tr><td class="align_left">The gas layer beneath the weathering crust</td><td class="align_center">-40.8~-37.2</td><td class="align_center">-38.9 (7)</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Statistical values of natural gas methane isotopes in different layers of the Ordos Basin [<a href="/journals/geofluids/2021/9365364/#B39" target="_blank">39</a>].</div>

Geofluids

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Table 3

Table 3: The Accumulation Characteristics of the Paleozoic Reservoir in the Central-Southern Ordos Basin Recorded by Organic Inclusions 