气体在井底时的初始含硫量越小，则越靠近井口位置析出；
Less the initial sulfur content is in the bottom hole, closer the sulfur separation place is to the wellhead.
分析认为，该潜孔钻头导致井底流场分布不合理的原因在于喷嘴安放位置太靠近钻头边缘。
Analysis shows that the reason of improper flow field distribution caused by DTH bit is that the nozzle position is close to the edge of bit.
采用钻孔套芯应力解除法在赵楼煤矿井底车场位置选点进行了地应力测量。
In-situ stress was measured by overcoming method in borehole in Zhaolou Coal Mine shaft station.
应用推荐