DTFRDelay Tolerant Firework Routing (computer engineering)
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DTFR mud circulates in the annulus under ambient pressure conditions reducing development time.
The Boart Longyear DTFR drilling method was employed successfully at active mine sites in the Pilbara region, where a high volume of water was discharged during drilling, without hindering active mining operations.
With DTFR, the need for large sumps is eliminated because water is not discharged during drilling.
For the development of one ex-pit dewatering well in particular, the DTFR reached a depth of 144 m with less than 1% of deviation during drilling.