Nyenzo za almasi ya polycrystalline, kwa ajili ya matumizi ya biti za almasi ya polycrystalline (PDC), ni mojawapo ya maendeleo muhimu zaidi ya zana za kuchimba mafuta katika miaka ya hivi karibuni.Biti za kichwa zisizohamishika huzunguka kama kipande kimoja na hazina sehemu zinazosonga kando.Wakati biti za kichwa zisizobadilika hutumia vikataji vya PDC, kwa kawaida huitwa bits za PDC.Umaarufu wa biti zinazotumia vikataji vya PDC umeongezeka kwa kasi, na ni karibu kawaida kama biti za koni katika programu nyingi za kuchimba visima.
Vipimo vya Matrix PDC Drill Bits:
Ukubwa (Inchi) | Ukubwa (mm) | St.Mfululizo wa API | Uzito wa takriban (kg) |
2-3/8 | 60 | Isiyo ya std. | 1.3 |
2-1/2 | 63.5 | Isiyo ya std. | 1.5 |
3 | 76 | Isiyo ya std. | 2 |
3-1/2 | 89 | Isiyo ya std. | 3.5 |
3-7/8 | 98.4 | 2-3/8" | 5 |
4 | 102 | 2-3/8" | 5.5 |
4-1/4 | 108 | 2-3/8" | 6.5 |
4-5/8 | 117.5 | 2-7/8" | 8 |
5-1/4 | 133 | 2-7/8" | 11 |
5-5/8 | 142.9 | 3-1/2" | 13 |
5-7/8 | 149.2 | 3-1/2" | 14 |
6 | 152 | 3-1/2" | 17 |
6-1/8 | 155.6 | 3-1/2" | 18 |
6-1/4 | 159.3 | 3-1/2" | 20 |
6-1/2 | 165 | 3-1/2" | 22 |
7-1/2 | 190.5 | 4-1/2" | 31 |
7-5/8 | 193.7 | 4-1/2" | 32 |
7-7/8 | 200 | 4-1/2" | 35 |
8-1/2 | 215.9 | 4-1/2" | 42 |
8-5/8 | 219 | 4-1/2" | 44 |
8-3/4 | 222.3 | 4-1/2" | 45 |
9-1/2 | 241.3 | 6-5/8" | 60 |
9-5/8 | 244.5 | 6-5/8" | 65 |
9-3/4 | 247.7 | 6-5/8" | 70 |
9-7/8 | 250.8 | 6-5/8" | 75 |
10-5/8 | 270 | 6-5/8" | 82 |
11-5/8 | 295 | 6-5/8" | 90 |
12-1/4 | 311.2 | 6-5/8" | 98 |
13-5/8 | 346.1 | 6-5/8" | 134 |
15-1/2 | 394 | 6-5/8" | 190 |
16 | 406.4 | 6-5/8" | 200 |
17-1/2 | 444.5 | 7-5/8" | 251 |
20 | 508 | 7-5/8" | 300 |
24 | 610 | 7-5/8" | 600 |
26 | 660.4 | 7-5/8" | 700
|
Kiwango cha Chini cha Agizo | N/A |
Bei | |
Maelezo ya Ufungaji | Kifurushi cha Kawaida cha Usafirishaji wa Nje |
Wakati wa Uwasilishaji | siku 7 |
Masharti ya Malipo | T/T |
Uwezo wa Ugavi | Kulingana na Agizo la Kina |