Hoʻokomo ʻia ka mea pale puʻupuʻu rotary ma luna o ka BOP annular. I ka wā o ka hana ʻana i nā hana wili ʻana a me nā hana ʻē aʻe, e lawelawe ana i ke kumu o ka hoʻohuli ʻana i ke kahe ma ka hoʻopaʻa ʻana i ke kaula hoʻololi ʻana. Ke hoʻohana pū ʻia me ka drilling BOP, drill string check valves, oil-gas separators, a me snubbing units, hiki iā ia ke palekana i ka wili kaomi ʻana a me ka hana snubbing. He kuleana koʻikoʻi ia i nā hana kūikawā e like me ka hoʻokuʻu ʻana i nā ʻaila haʻahaʻa haʻahaʻa a me nā papa kinoea, leak-proof drilling, ea drilling, a me snubbing well repairs.