Isando se-DTH somfutho womoya ophansi
Umgodi ophansiisando se-dthiyithuluzi elisebenzisa umoya ocindezelwe njengomthombo wamandla futhi lisebenzisa ukunyakaza okuphindaphindayo kwepiston kuisandoukushaya i-drill bit ukuze kuphulwe idwala. Umgodi ophansiisando se-dthiyithuluzi elisebenzayo le-drill ephansi emgodini. Ngokuya ngengcindezi yokusebenza ye-isando se-dth, ingahlukaniswa ibe yingcindezi ephansiisando se-dth(ingcindezi yokusebenza ingu-0.5 ~ 0.7Mpa), ingcindezi ephakathi nendawoisando se-dth(0.7~1.2Mpa) kanye nomfutho ophezuluisando se-dth(ngaphezu kwe-1.2Mpa); ngokuya ngendlela yokusatshalaliswa kwegesi kanye nezici zesakhiwo segesiisando se-dth, ingahlukaniswa ngezinhlobo zama-valve kanye nezinhlobo ezingenama-valve; ngokuya ngokwakheka kwembobo ephakathi nendawo yembobo ephansiisando se-dth, ingahlukaniswa ibe yizimbobo ezijwayelekileisando se-dthkanye nokujikeleza kwegazi okubuyela emuva phansi emgodiniisando se-dth.
Isicelo:
Isetshenziswa kabanzi ekumbeni i-ore okunemigodi emikhulu evulekile kanye nengaphansi komhlaba, ubunjiniyela bokumisa, ukumba amatshe kanye nokumba amatshe, ukumbiwa kwemithombo yamanzi, ubunjiniyela bokwakha ukumba amatshe kanye nokwakhiwa kobunjiniyela obukhulu., njll.
Izici
1 Umfutho womoya osebenzayo uphakathi kuka-0.5i-Mpa kanye0.7I-Mpa
2 Izando ezingenamavalvu.
3 Isakhiwo esilula, kulula ukusihlanganisa nokuyiqaqa, isikhathi eside sokuphila.
4 Imvamisa ephezulu yokushayisana kanye nesivinini sokubhoboza esisheshayo.
5 Ukusetshenziswa komoya okuphansi kanye nokusetshenziswa kawoyela okuphansi. Imbobo ingabholwa ku-valvu yokuhlola ukuze kuhlinzekwe ngokukhishwa kwe-cuttings okuphumelelayo.
6 Ifaneleka kakhulu ekugubheni amatshe.
| Imodeli | L2.5 | L3 | L30 | L40 |
| Incazelo Yento | Isisindo (kg) | |||
| I-Sub Ephezulu | 2.03 | 2.89 | 2.75 | 4.7 |
| Hlola Ikhanda Levalvu | 0.01 | 0.01 | 0.01 | 0.005 |
| Hlola i-Valve Bond | 0.02 | 0.02 | 0.02 | 0.044 |
| Intwasahlobo | 0.01 | 0.01 | 0.01 | 0.01 |
| Umshini wokuwasha | 0.02 | 0.01 | 0.102 | |
| Isikhala | 0.01 | 0.01 | 0.01 | |
| Isivalo | 0.24 | 0.43 | 0.07 | 0.1 |
| Isikulufu se-Grub | 0.01 | 0.01 | ||
| I-Spool | 0.04 | 0.01 | ||
| Iphinikhodi ye-Sellock | 0.01 | |||
| I-Disc Valve | 0.03 | 0.05 | ||
| Iphinikhodi Yendawo | 0.01 | |||
| Umsabalalisi Womoya | 0.81 | 1.41 | 1.04 | 2.1 |
| Isilinda Sangaphakathi | 1.3 | 2.01 | 2.01 | 2.8 |
| I-Piston | 2.78 | 4.13 | 4.26 | 6.8 |
| Isilinda Sangaphandle | 4.64 | 6.62 | 6.2 | 8.6 |
| Umhlahlandlela Bush | 0.78 | 0.01 | 1.5 | |
| Ukugcina Isihlahla | 0.01 | 0.01 | 0.001 | |
| Intwasahlobo | 0.01 | 0.01 | 0.01 | 0.001 |
| Iphini Lokukhiya | 0.01 | 0.01 | 0.004 | |
| I-Drive Sub | 1.05 | 1.82 | 1.82 | 3.8 |
| Iphini Yokugcina | 0.01 | 0.01 | 0.02 | 0.029 |
| Usuku Lobuchwepheshe | ||||
| Imodeli | L2.5 | L3 | L30 | L40 |
| Ubude (Ngaphandle Kwebhithi) | 763mm | 797mm | 750mm | 835mm |
| Isisindo (Ngaphandle Kwebhithi) | 12kg | 20kg | 20kg | 30.8kg |
| Ububanzi Bangaphandle | Φ66mm | Φ80mm | Φ80mm | Φ98mm |
| I-Bit Shank | L2.5**CIR80 | L3**CIR90 | L3**CIR90 | L4**CIR110 |
| Ububanzi Bemigodi | Φ68-Φ88mm | Φ90-Φ110mm | Φ90-Φ110mm | Φ110-Φ150mm |
| Intambo Yokuxhumanisa | 48x10 | 48x10 | 48x10 | I-API 2 3/8" REG |
| Ingcindezi Yokusebenza | 0.5-0.7Mpa | 0.5-0.7Mpa | 0.5-0.7Mpa | 0.5-0.7Mpa |
| Izinga Lomthelela ku-17 Bar | 15Hz | 15Hz | 15Hz | 14Hz |
| Isivinini Sokujikeleza Esinconyiwe | 25-40 r/min | 25-40 r/min | 25-40 r/min | 25-40 r/min |
| Ukusetshenziswa Komoya | 0.7Mpa: 5m³/min | 0.7Mpa: 8m³/min | 0.7Mpa: 8m³/min | 0.7Mpa: 11m³/min |
