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1983年华东石油地质局井下作业大队在苏北某构造西高点 Sutai 174井的二迭系和石炭系中,发现日产20万方二氧化碳气的石灰岩储层。之后又射开该井的志留系坟头组23~(1-3)层,经试油又产少量油气。气体是含烃类的二氧化碳,其组分为:甲烷10.8408％,乙烷0.3972％,丙烷0.2028％,正丁烷0.0479％,异丁烷0.03％,正戊烷0.0189％,异戊烷0.0191％,乙烯0.0028％,二氧化碳79.859％,氮8.5814％。气体比重1.3746。
In 1983, the East China Petroleum Geology Bureau underground working group found a limestone reservoir with a daily production capacity of 200,000 cubic meters of carbon dioxide in the Permian and Carboniferous of the Sutai-174 well in the western part of the northern Jiangsu. After that, the well of Silurian grave group 23 ~ (1-3) was shot and a small quantity of oil and gas was produced after the test oil. The gas is a hydrocarbon-containing carbon dioxide having the following composition: methane 10.8408%, ethane 0.3972%, propane 0.2028%, n-butane 0.0479%, isobutane 0.03%, n-pentane 0.0189%, isopentane 0.0191% 0.0028% of ethylene, 79.859% of carbon dioxide and 8.5814% of nitrogen. Gas specific gravity 1.3746.