陕北油石二开井段遇阻的原因为泥岩的水化膨胀和孔隙性砂岩的泥饼沉积。
The drilling resistance of the Erkaijing well in oil field of north Shanxi is caused by hydration expansion of mud stone and mud cake deposition of porous sandstone.
欢127-平2井为辽河油田第1口二开套管射孔完井的水平井，油藏埋深较浅。
The Well Huan127-Ping2 is the first horizontal well with technical casing perforation completion, with shallow reservoir.
文摘：陕北油石二开井段遇阻的原因为泥岩的水化膨胀和孔隙性砂岩的泥饼沉积。
Abstract: the drilling resistance of the Erkaijing well in oil field of north Shanxi is caused by hydration expansion of mud stone and mud cake deposition of porous sandstone.
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