Silurian hydrocarbon exploration breakthrough and its implications in the Shajingzi structural belt of Tarim Basin, NW China

ZHANG Junfeng,ZHANG Yuanyin,GAO Yongjin

Table 1 Parameters of natural gas samples from the Kepingtage Formation in Well XSD1

Member Depth/m C1/% C2/% C3/% iC4/% nC4/% iC5/% nC5/% CO2/% N2/% Density/(g•cm-3) Lower member 2525.5-2528.5 92.91 0.80 0.03 0.02 0.01 0.03 0.11 6.186 0.705 3 Upper member 2377.0-2386.0 2409.0-2413.0 91.72 1.47 0.20 0.14 0.03 0.14 0.04 0.01 6.247 0.595 8