API wili niho HDD pilot drill bit IADC127 no ka pohaku paakiki

ʻO ka hale hana o nā niho wili HDD pilot tricone drill bits ma ke kumukūʻai me ke kumu kūʻai hoʻemi
Wahi wehewehe:
IADC: 127 - ʻO ka puke pai niho kila i hoʻopaʻa ʻia i ka bit bearing me ka pale ana no nā hana palupalu me ka ikaika compressive haʻahaʻa a me ka drillability kiʻekiʻe.
Ka ikaika compressive:
0 - 35 MPA
0 - 5,000 PSI
Ka wehewehe ʻāina:
ʻO nā pōhaku palupalu loa, ʻaʻole stratified, maikaʻi ʻole i hoʻopaʻa ʻia e like me nā pālolo i hoʻopaʻa maikaʻi ʻia a me nā pōhaku one, nā limestone marl, nā paʻakai, gypsum, a me nā lanahu paʻa.
Hikina loaHiki i ka wili ke hāʻawi i nā bits tricone HDD i nā ʻano nui (mai 3" a 26”) aka hapa nui o nā Code IADC.
Hana maikaʻi nā ʻāpana tricone niho wili i ka ʻeli ʻana i nā pōhaku palupalu, ʻoi aku ka kupaianaha o ke komo ʻana e mālama ai i ka nui o ka hoʻolimalima tencher a me ka uku hana.