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我队于一九七三年承担锡盟多伦县生活用水钻井任务,其中一眼位于展览馆墙后,井深110.51米,0至68.91米为6″铸铁井管,以下变为4″铸铁井管,实用井深97米。建井后,在洗井时发现涌沙,随即捞沙数日无效,涌沙深度距地面老是40米深,眼看成了废井。重新钻,甲方再无投资,拔管又怕拔断铸铁井管。我们深入了解地层情况,肯定了涌沙深度后(附地层剖面草图),采取了处理措施:
Our team undertook the domestic water drilling project in Duolun County of Ximeng in 1973. One of them was located at the wall of the exhibition hall with a depth of 110.51 meters and a cast iron well pipe of 0 to 68.91 meters, Practical depth of 97 meters. After the well was built, it was found that there was a surge of sand when the well was washed, and then the number of days of fishing for the sand was invalidated. The depth of the surge was 40 meters deep from the ground and it turned out to be a waste well. Drill again, Party A and then no investment, extubation afraid of unplugged cast iron well tube. We have a thorough understanding of the stratigraphic situation, affirmed the depth of gushing sand (with stratum profile sketch), took measures to deal with: