Izindaba

IInjini Yokufuduka Enhle (PDM), eyaziwa nangokuthi"injini yodaka,”kuyimbobo ebalulekileithuluzi lokubhobozaisetshenziswa emisebenzini kawoyela negesi. Iguqula amandla e-hydraulic avela kuketshezi lokubhoboza (udaka) abe ukujikeleza komshini ukuze kushayelwe i-drill bit, okwenza kube yinto ebalulekile ekubhobozeni okuqondiswe ngqo, emithonjeni evundlile, kanye nasekuphambukiseni.

I. Isakhiwo kanye nesimiso sokusebenza

1. Izingxenye Eziyinhloko

I-Velve Yokudlula: Ivumela ukujikeleza koketshezi ngesikhathi sokukhubeka ukuze kuvinjelwe ukukhuphuka kwengcindezi.

Isigaba Semoto: Iyunithi yamandla eyinhloko, equkethei-stator(ishubhu eline-elastomer) kanyei-rotor(isikulufu sensimbi esigoqekile).

I-Universal Joint: Iguqula ukunyakaza okungavamile kwe-rotor kube ukujikeleza okugxilile.

Umgodi Wokushayela: Idlulisela i-torque ku-drill bit, isekelwa yi-bearing assemblies yemithwalo ye-axial/radial.

2.Isimiso Sokusebenza

Uketshezi lokubhoboza olunomfutho ophezulu lungena enjinini, luphoqa i-rotor ukuthi ijikeleze ngaphakathi kwe-stator ngokunyakaza kweplanethi (ukugoqa + ukujikeleza).

Ukujikeleza kwe-rotor kudluliselwa nge-universal joint kanye ne-drive shaft kuya ku-drill bit.

Izinga lokugeleza (Q) vs. RPM (N):

N=qQ×ηv.

Q: Izinga lokugeleza (L/s)

q: Ukufuduka ngokujikeleza ngakunye (L/rev)

ηvUkusebenza kahle kwevolumu (ngokuvamile 80–90%)

II. Ukuhlukaniswa kwama-PDM

1. Ngomklamo

I-Single-Lobe PDM (ukucushwa okungu-1:2): Isivinini esiphezulu, i-torque ephansi (isb., yokubhoboza ngemigodi emincane).

I-Multi-Lobe PDM (isb., ukucushwa kwe-5:6): Isivinini esiphansi, i-torque ephezulu (isb., yama-bits amakhulu noma ukwakheka okuqinile).

2. Ngesicelo

I-PDM ejwayelekile: Isetshenziswa emithonjeni eqondile noma elula eqondisa ngqo.

I-Bent Housing PDM: Iqukethe i-engeli egobile engaguquki (isb., 1°, 1.5°, 2°) yokulawula okuqondisiwe.

I-Hybrid Turbine-PDM: Ihlanganisa i-RPM ephezulu (i-turbine) ne-torque ephezulu (i-PDM).

III. Amapharamitha Okusebenza Okubalulekile

Ipharamitha	Incazelo
Isivinini (RPM)	Ngokuvamile i-100–300 RPM, incike ekwakhiweni kwe-lobe kanye nesivinini sokugeleza.
I-Torque (N·m)	Kuyanda ngezigaba ze-motor (i-stator ende = i-torque ephezulu).
Ukwehla Kwengcindezi	I-ΔP esebenzayo: 2–5 MPa; ukucindezela okukhulu kungalimaza i-stator elastomer.
Umkhawulo Wezinga Lokushisa	Ama-stat ajwayelekile: 120–150°C; ama-stat ashisa kakhulu (isb., i-FKM): 180°C+.
Ukuhambisana kwe-Bit	Isebenza ngama-PDC bits, ama-roller cones, njll. (kumele ahambisane nezidingo ze-RPM/torque).

IV. Ukukhetha kanye Nezicelo

1. Izindlela Zokukhetha

Ukuqina Kwesakhiwo: Ukwakheka okuqinile kudinga ama-PDM amaningi ukuze kube ne-torque ephezulu.

Umzila Womthombo: Imithombo eqondisa indlela idinga ama-PDM agobile.

Uketshezi Lokubhoboza: Udaka olusekelwe ku-oyela ludinga ama-elastomer angamelani namafutha (isb., i-HNBR); Izindawo ze-H₂S zidinga izinto eziwusizo.

2. Izicelo Ezijwayelekile

Ukubhoboza Okuvundlile: Isetshenziswa nezinhlelo ze-MWD/LWD ukuze kube nokuqondisa okunembile.

Ukulandela eceleni kanye nokusebenza kabusha: Ihlinzeka ngokujikeleza ngemva kokuphuma kwekhava.

Imithombo Ejulile/Ejulile Kakhulu: Idinga ama-stator okushisa okuphezulu kanye nezinto eziqinile.

V. Ukwehluleka Okuvamile Nokulungiswa

Isibonakaliso	Imbangela Engaba Khona	Isixazululo
Ukwehla Kwesivinini	Ukwehluleka kokuguguleka/ukwehluleka kwe-stator	Shintsha i-stator; hlola izinto eziqinile zodaka.
Akukho Ukuphuma Kwe-Torque	Ukwehluleka kwe-Universal Joint/Drive Shaft	Hlola futhi ushintshe izingxenye ezonakele.
Ukuvuza	Ukwehluleka kwesivalo/ukuxhumeka okuxekethile	Shintsha izivalo; qinisa ngokwezincazelo ze-API.
Ukudlidliza Okukhulu	Ukungalingani kwe-Rotor noma ukungafani kwe-bit	Hlola ukunemba kwe-rotor; lungisa i-bit.

VI. Izitayela Zesikhathi Esizayo

1.Ama-PDM ahlakaniphile: Izinzwa ezihlanganisiwe zokuqapha i-torque/izinga lokushisa/ukudlidliza ngesikhathi sangempela.

2.Izinto Ezithuthukisiwe: Ama-rotor ahlanganiswe nge-nanocoated, ama-elastomer angu-200°C+ .

3.Izinhlelo ze-Hybrid: Inhlanganisela ye-PDM + turbine yokwakheka okuyinkimbinkimbi.

I-Landrill inganikeza izinhlobo zama-mud motors (PDMS) ngekhwalithi engcono kakhulu. Uma unjaloUnentshisekelo kubo, sicela ukhululeke ukuxhumana nathi. Singakuthumelela imininingwane eyengeziwe.

UJunnie Liu

Ucingo/I-Whatsapp:+0086-158 7765 8727
Email: landrill@landrilltools.com

Isikhathi sokuthunyelwe: Ephreli-03-2025