(b)钻机设计:因钻孔直径大，回转扭矩大，故要求钻头结构简单、质最轻、钻进阻力小、排渣顺畅、使用方便。
(c)钻孔方法:为确保钻孔顺利进行，一般采用分级扩孔，反循环排渣，钻进中经常调整泥浆性能。
(d)钻进参数:转速8r/min;钻压30kN (正循环钻进），25kN (反循环钻进）泵量2X108m3/h (正循环钻进），180m3/h (反循环钻进）。
(e)泥浆性能及配方,对泥浆性能的要求:含砂量<4% ;黏度18～20s;密度1.05～1.20kg/L; pH值8～9。上部淤泥层含有大量有机质，对泥浆的破坏力强，且钻孔泥渣多，因此需配制抗破坏力强和具浮渣能力的泥浆。用CMC低固相泥浆，其配比为：黏土（膨润土）：水：纯碱： CMC=1 : 5. 59 : 0. 03 : 0.02o
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