
Sub Sirkulasi Bola Gulung Gulung Gulung (Multiple Drop Ball Circulating Sub) iku sakumpulan sambungan cendhak sing bisa dibukak lan ditutup kaping pirang-pirang. Umumé dipasang ing BHA khusus kayata arah, kecepatan, logging nalika ngebor, lan liya-liyane. Sub iki bisa mbukak lan nutup bolongan bypass pas wektune kanggo operasi khusus miturut syarat kondisi bolongan ngisor, supaya bisa ningkatake penerapan BHA khusus, ningkatake efisiensi produksi, lan nyuda risiko kontrol sumur.
Kontrol Sirkulasi sing Ilang
Pangumbahan Sumur Perpindahan Tinggi
Pompa Cairan Korosif
Penggilingan & Reaming Jendhela
Saluran Sirkulasi Terbalik
| Ukuran (ing) | OD (mm) | ID (mm) | Bolongan (mm) | Koneksi utas | Lintas diameter (mm) | Diameter saka aktivasi bal-bal (mm) | Jumlah bal-balan penutup (pcs) | Diameter saka bal-balan penutup (mm) | Jumlah bal-balan penutup (pcs) | Diameter saka bal-balan penutup (mm) | Jumlah bal-balan penutup (pcs) | Cacahing kerja (kaping) | Dawane sakabèhé (mm) | Bobot total (kg) | Dandanan torsi |
| 4 3/4" | 121 | 50.8 | 30 | NC38 | 28.2 | 38.1 | 6 | 28.6 | 6 | 35 | 12 | 6 | 2033 | 124 | 13.5 |
| 6 1/4" | 159 | 71.4 | 30 | NC46 | 28.2 | 50.8 | 6 | 28.6 | 6 | 35 | 12 | 6 | 2586 | 292 | 30.4 |
| 6 1/2" | 165 | 71.4 | 30 | NC50 | 28.2 | 50.8 | 6 | 28.6 | 6 | 35 | 12 | 6 | 2606 | 308 | 40.2 |
| 6 3/4" | 172 | 71.4 | 30 | NC50 | 28.2 | 50.8 | 6 | 28.6 | 6 | 35 | 12 | 6 | 2586 | 358 | 43.8 |
| 8" | 203 | 71.4 | 38 | 6 5/8REG | 34.35 | 63.5 | 6 | 35 | 6 | 44.45 | 12 | 6 | 2803 | 514 | 62.9 |
| 8 1/4" | 210 | 71.4 | 38 | 6 5/8REG | 34.35 | 63.5 | 6 | 35 | 6 | 44.45 | 12 | 6 | 2803 | 564 | 62.9 |
| 9 1/2" | 241 | 76.2 | 38 | 7 5/8REG | 34.35 | 63.5 | 6 | 35 | 6 | 44.45 | 12 | 6 | 2817 | 791 | 107.8 |
Pitakon
5-1203, Zona Industri Dahua, No.2 Yunshui Road, zona pengembangan teknologi tinggi, Xi'an, 710065, Tiongkok
86-13609153141