Kerah jeung Pipa Fitur
Kerah bor utamana dipaké pikeun nyadiakeun bit bor kalayan tekanan pangeboran diperlukeun, mastikeun gaya tarikan dikirimkeun ka pipa bor na centralize bit bor.Numutkeun spésifikasi API Spec7-1, kualitas bahan nyaéta 4145H éta sanggeus perlakuan panas, thread hardening perlakuan jeung fosfat pikeun hadé anti nangkep.Ogé bisa dihasilkeun kana sarat konsumén '.
Beurat Beurat bor kerah mangrupa bagian penting tina kinerja Jcdrillalat pangeboran liang handap.Collars bor nyadiakeun beurat dina bit pikeun pangeboran ngaliwatan formasi.Rig drillers tiasa ngawas beurat dilarapkeun ka bit ku ngawas ngaliwatan itungan basajan, sarta skala indikator beurat, di lantai geger.Kerah bor biasana panjangna 31 kaki, témbok kandel, sareng baja beurat.Aranjeunna datangna kotak ku pin kalawan sambungan kawas, guna kawin saloba diperlukeun, pikeun ngahontal beurat dipikahoyong.Collars bor datangna slick OD, atawa machined kalawan alur hélik (kerah spiral).Jink ekeeps suplai berehan tina kerah bor baja karbon di stock.Lead Collar Tujuan collars lead nyaéta pikeun nempatkeun jarak anu pondok antara bit pangeboran, sareng penstabil bit caket.Ieu ngan cara sejen Jcdrill méré Anjeun kamampuhan pikeun tweak pangabutuh kinerja anjeun salaku tantangan handap liang timbul.Ku nambahkeun jarak pondok ieu antara bit, sarta deukeut bit tusuk, Anjeun stiffen BHA wright di bit, ngurangan bit walk, kituna, promosi liang straighter.Jcdrill ngajaga suplai berehan tina baja karbon kerah kalungguhan di stock.
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Desain | O | D | ID | Lengeh | Diaméter Chamfer |
in | mm | + 1,6-0,0 mm | +152,4 mm | +0,4 mm | |
NC23-31 | 3 1/8 | 79.4 | 31.8 | 9.15 | 76.2 |
NC26-35 | 3 1/2 | 88.9 | 38.1 | 9.15 | 82.9 |
NC31-41 | 4 1/8 | 104.8 | 50.8 | 9.159.45 | 100.4 |
NC35-47 | 4 3/4 | 120.7 | 50.8 | 9.159.45 | 114.7 |
NC38-50 | 5 | 127 | 57.2 | 9.159.45 | 121 |
NC44-60 | 6 | 152.4 | 57.2 | 9.159.45 | 144.5 |
NC44-60 | 6 | 152.4 | 71.4 | 9.159.45 | 144.5 |
NC44-62 | 6 1/4 | 158.8 | 57.2 | 9.159.45 | 149.2 |
NC44-62 | 6 1/4 | 158.5 | 71.4 | 9.159.45 | 150 |
NC46-65 | 6 1/2 | 165.1 | 57.2 | 9.159.45 | 154.8 |
NC46-65 | 6 1/2 | 165.1 | 71.4 | 9.159.45 | 154.8 |
NC46-67 | 6 3/4 | 171.5 | 57.2 | 9.159.45 | 159.5 |
NC50-70 | 7 | 177.8 | 57.2 | 9.159.45 | 164.7 |
NC50-70 | 7 | 177.8 | 71.4 | 9.159.45 | 164.7 |
NC50-72 | 7 1/4 | 184.2 | 71.4 | 9.159.45 | 169.5 |
NC56-77 | 7 3/4 | 196.9 | 71.4 | 9.159.45 | 185.3 |
NC56-80 | 8 | 203.2 | 71.4 | 9.159.45 | 190.1 |
6 5/8REG | 8 1/4 | 209.6 | 71.4 | 9.159.45 | 195.7 |
NC61-90 | 9 | 228.6 | 71.4 | 9.159.45 | 212.7 |
7 5/8REG | 9 1/2 | 241.3 | 76.2 | 9.159.45 | 223.8 |
NC70-97 | 9 3/4 | 247.7 | 76.2 | 9.159.45 | 232.6 |
NC70-100 | 10 | 254 | 76.2 | 9.159.45 | 237.3 |
8 5/8REGc | 11 | 279.4 | 76.2 | 9.159.45 | 266.7 |