Methane in Soil Gas and Its Migration to the Atmosphere in the Dawanqi Oilfield, Tarim Basin, China

<div>CH<sub>4</sub> areal distribution: (a) soil gas and (b) absorbed gas. (1) CH<sub>4</sub> concentration isoline, (2) sampling sites used for oil exploration, (3) fault in the top of the Kangcun formation of the Neogene, (4) oil well, (5) sampling lines in this study, and (6) sites of high CH<sub>4</sub> flux (&gt;50 mg m<sup>-2</sup> d<sup>-1</sup>).</div>

Geofluids

fig4

Figure 4

Figure 4: Methane in Soil Gas and Its Migration to the Atmosphere in the Dawanqi Oilfield, Tarim Basin, China 