ʻO ka casing rotator he ʻano drill hou me ka hoʻohui ʻana o ka mana hydraulic piha a me ka hoʻouna ʻana, a me ka mana hui o ka mīkini, ka mana a me ka wai. He mea hou, kaiapuni a me ka pono loa o ka wili ana. I nā makahiki i hala iho nei, ua hoʻohana nui ʻia ia i nā papahana e like me ke kūkulu ʻana i ke alanui wubway, ka puʻu articulation o ka lua hoʻokumu hohonu, ka hoʻomaʻemaʻe ʻana i nā puʻu ʻōpala (undergroud obstructions), kiʻekiʻe-wikiwiki kaʻaahi, alanui a me ke alahaka, a me nā puʻu kūkulu kūlanakauhale, a me ka hoʻoikaika ʻana i ka pā wai.