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今年长庆石油勘探局在盆地中部钻探下古生界获得重大发现,先后打出两口奥陶系气井,从而证实了深层的气潜力,为寻找丰产气区展示了良好前景。麒参1井钻在盆地的中东部平缓的陕北斜坡上。该井1985年5月30日开钻,进入奥陶系48米。该井从二叠系到奥陶系多处见良好油气显示。对奥陶系顶部进行射孔酸化求产,测算日产气1.7万米~3及少量凝析油。这是陕甘宁盆地中部第一口具工业价值的深层气井。天1井位于盆地中西部,在盆地的向斜部位。该井1986年1月5日开钻,进入奥陶系后,发现良好含气显示,钻井放空。中途测试,用16.5毫米油嘴,两小时喷天然气2万多米~3。这一发现已使天1井成为陕甘宁盆地内迄今最深的也是产量最高的气井。现该井仍然继续向下钻,以期获得更多的深层资料。
This year, the Changqing Petroleum Exploration Bureau has made major discoveries in drilling the Lower Paleozoic in the middle of the basin. It has successively hit two Ordovician gas wells to confirm the deep gas potential and has shown a good prospect for finding a high-yield gas zone. Qi Sen 1 well drilling in the basin in the eastern part of the gentle slope of northern Shaanxi. The well was drilled on May 30, 1985 and entered the Ordovician 48 meters. The well from the Permian to Ordovician seen everywhere good gas show. On the top of the Ordovician perforation acidification production, Nissan estimated 17,000 meters ~ 3 and a small amount of condensate. This is the first deep gas well with industrial value in the central part of the Shaan-Gan-Ning basin. Well Tian 1 is located in the central and western basins in the basin of the syncline. The well was drilled on January 5, 1986, and after entering the Ordovician it was found that good gas showed that the well was drilled. Midway test, with 16.5 mm nozzle, two hours spray natural gas more than 20,000 meters ~ 3. This discovery has made Tian-1 well the deepest and highest-yielding gas well in the Shan-Gan-Ning basin so far. Now the well still continue to drill down, in order to obtain more in-depth information.