Ibikoresho bya diyama ya polycrystalline, kugirango bikoreshwe mu bikoresho bya diyama ya polycrystalline (PDC), ni kimwe mu bintu byingenzi byateye imbere mu bikoresho byo gucukura peteroli mu myaka yashize.Imitwe ihamye-imitwe izunguruka nkigice kimwe kandi ntigizwe nibice byimuka bitandukanye.Iyo bits-imitwe itunganijwe ikoresha ibice bya PDC, mubisanzwe bita PDC bits.Ibyamamare bya bits ukoresheje amashanyarazi ya PDC byiyongereye gahoro gahoro, kandi birasa nkibisanzwe nka roller-cone bits mubikorwa byinshi byo gucukura.
Matrix umubiri PDC Imyitozo ya Bits Ibisobanuro:
Ingano (Inch) | Ingano (mm) | Std.Urudodo rwa API | Ibiro bigereranijwe (kgs) |
2-3 / 8 | 60 | Ntabwo ari std. | 1.3 |
2-1 / 2 | 63.5 | Ntabwo ari std. | 1.5 |
3 | 76 | Ntabwo ari std. | 2 |
3-1 / 2 | 89 | Ntabwo ari 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
|
Umubare ntarengwa wateganijwe | N / A. |
Igiciro | |
Ibisobanuro birambuye | Ibicuruzwa bisanzwe byoherezwa hanze |
Igihe cyo Gutanga | Iminsi 7 |
Amasezerano yo Kwishura | T / T. |
Gutanga Ubushobozi | Bishingiye ku Iteka rirambuye |