ʻO nā lako hoʻopaʻa paʻa i lalo o ka BHA
ʻO kahi mea hoʻopaʻa wili ʻana he ʻāpana o nā mea hana i lalo i hoʻohana ʻia i ka hui o ka lua lalo (BHA) o kahi kaula drill.Hoʻopaʻa mechanically ia i ka BHA i loko o ka lua i mea e pale aku ai i ka sidetracking me ka manaʻo ʻole, nā haʻalulu, a me ka hōʻoia i ka maikaʻi o ka lua i wili ʻia.
Hoʻokumu ʻia ia me kahi kino cylindrical hollow a me nā lau hoʻopaʻa, i hana ʻia me ke kila ikaika kiʻekiʻe.Hiki ke pololei a i ʻole spiraled nā ʻili, a he ʻano paʻakikī no ka pale ʻana i ke kapa.
Hoʻohana ʻia kekahi mau ʻano o nā stabilizer wili i ka ʻaila hinu i kēia lā.ʻOiai ka mea maʻamau ka mea maʻamau o nā stabilizers (i hana ʻia i loko o kahi ʻāpana kila), hiki ke hoʻohana ʻia nā ʻano ʻē aʻe, e like me:
Hiki ke hoʻololi i ka lima stabilizer, kahi e kau ʻia ai nā lau ma ka lima, a laila e hoʻopaʻa ʻia i ke kino.Hiki ke hoʻokele waiwai kēia ʻano inā ʻaʻohe hale hoʻoponopono i loaʻa kokoke i ka pūnāwai i wili ʻia a pono e hoʻohana ʻia ka ukana ea.
Welded blades stabilizer, kahi e wili ʻia ai nā lau ma ke kino.ʻAʻole ʻōlelo pinepine ʻia kēia ʻano ma nā pūnāwai aila ma muli o ka pilikia o ka nalowale ʻana o nā lau, akā hoʻohana mau ʻia i ka wā e wili ai i nā pūnāwai wai a i ʻole ma nā kahua ʻaila haʻahaʻa.
ʻO ka maʻamau, hoʻokomo ʻia nā stabilizers 2 a 3 i loko o ka BHA, me kekahi ma luna pono o ka drill bit (near-bit stabilizer) a hoʻokahi a ʻelua paha ma waena o nā kola drill (string stabilizers)
| Hole Nui (ma) | Kūlana Nui DC (ma) | Pā Hoʻokaʻaʻike (ma) | Lahi laula (ma) | Ka lawaiʻa ʻāʻī Ka lōʻihi (ma) | Lahi Undergage (i loko) | Ka lōʻihi (i) | Ma kahi o Kaumaha (kgs) | |
| kaulahao | Kokoke-bit | |||||||
| 6" - 6 3/4" | 4 1/2" - 4 3/4" | 16" | 2 3/16" | 28" | -1/32" | 74" | 70" | 160 |
| 7 5/8" - 8 1/2" | 6 1/2" | 16" | 2 3/8" | 28" | -1/32" | 75" | 70" | 340 |
| 9 5/8" - 12 1/4" | 8" | 18" | 3 1/2" | 30" | -1/32" | 83" | 78" | 750 |
| 14 3/4" - 17 1/2" | 9 1/2" | 18" | 4" | 30" | -1/16" | 92" | 87" | 1000 |
| 20" - 26" | 9 1/2" | 18" | 4" | 30" | -1/16" | 100" | 95" | 1800 |
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