Sinopec - record drill speed7 Jun 2018 05:42
Further improvement in deep well and ultra-deep well drilling matching technologies:
A series of drilling acceleration technologies dominated by downhole tool + efficient drill bit and featured technologies, including leakage protection & sealing technology, borehole track control technology, drill tool combined optimization, air / atomization / foam drilling integrated technology, fine pressure-control drilling technology, long open hole cementing technology, etc. were formed, supporting the evaluation of tectonic zone in front of north hill in eastern Sichuan and the exploration discovery of Shunbei Oil and Gas Field. In whole year, there were 211 ultradeep wells and 21 wells over 7,000 m deep, drilled and finished, with average well depth of 5,698.84 m, mechanical drilling speed of 7.09 m/h, and drilling cycle of 97.91 days. Mashen #1 Well set a record of Asian deepest well (a drilled depth of 8,418 m), and Shunbei #2 Well set a new record of being the worldwide obliquely deepest (a drilled depth of 8,169 m) among small holes, which marked Sinopec ultra-deep well drilling and finishing technology entered the ranks of world leading technologies.
P.S. mechanical drilling speed of 7.09 m/h (metres per hour), is quite astonishing.