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CPP West Shanghai, Second-tier Extension Directional Drilling Success
- Jun 27, 2016 -

March 11 7:30, Shanghai West-East second-line pipe extension to the last control project--Cai Dongpan former residence of directional drilling crossing a pull-back success and provided a guarantee for the Shanghai Branch will be all through.

Cai Dongpan House crossing through real 547.3 m long, diameter of 1016 mm, through the strata of silty clay and weathered Ignimbrite. Despite the long distance from the crossing, geology is not complicated, but construction is difficult, intractable problems.