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苏北盆地具有聚集含氦天然气的特殊地质条件，在盆地的若干气井或气田（ 藏） 中较普遍地发现了氦。溪桥气田为苏北盆地首次发现的含氦天然气田，含氦量为０．５８ ％ ～１ ．０６％ ，达到或超过氦工业品位（ 含氦量为０．３ ％ ）；气田地质时代较新，储集层为上第三系砂岩；气藏埋藏浅，气层埋深仅３８０ｍ 。气田中的氦以幔源为主，与氮及无机成因的ＣＯ２ 相伴生。含氦气田叠覆于以海相地层为储集层的大型ＣＯ２ 气田之上，两者具有一定的成生联系，该气田的发现表明苏北盆地具有良好的含氦天然气勘探前景。图４ 表２ 参３（ 郭念发摘）
Subei Basin has special geological conditions for the accumulation of helium-bearing natural gas. Helium has been found more commonly in several gas wells or gas fields (reservoirs) in the basin. The Xiqiao gas field was the first helium-containing gas field discovered in the Subei basin, with a helium content of 0.58% -1. 06%, reaching or exceeding the industrial grade of helium (with a helium content of 0.3%). The gas field is relatively new in age and the reservoirs are Upper Tertiary sandstones. The gas reservoirs are shallow buried and the buried depth of gas reservoirs is only 380m. The helium in the gas field is dominated by mantle and is associated with nitrogen and inorganic CO2. The helium-bearing gas field overlaps the large-scale CO2 gas field with the marine strata as reservoirs, and the discovery of this gas field shows that the North Jiangsu gas reservoirs have good prospects for the exploration of natural gas containing helium. Figure 4 Table 2 Reference 3 (Guo Nianfa)