Uhlolojikelele lwe-PDM Drill

I-PDM drill (I-Progressive Displacement Motor drill) iwuhlobo lwethuluzi lokumba lamandla e-downhole elincike oketshezini lokumba ukuze luguqule amandla asebenza ngaphansi komhlaba abe amandla emishini. Umgomo wayo wokusebenza uhilela ukusebenzisa iphampu yodaka ukuthutha udaka nge-valve yokudlula ukuya emoteni, lapho kwakhiwa khona umehluko wengcindezi endaweni yokungena nokuphuma kwenjini. Lo mehluko ushayela i-rotor ukuthi ijikeleze i-axis ye-stator, igcine idlulise isivinini esijikelezayo ne-torque ngejoyinti le-universal and drive shaft iye ku-drill bit, kube lula imisebenzi yokumba ephumelelayo.

Izingxenye Eziyinhloko

I-PDM drill iqukethe izingxenye ezine ezibalulekile:

1. I-Bypass Valve: Ehlanganisa umzimba we-valve, umkhono we-valve, umgogodla we-valve, nentwasahlobo, i-valve yokudlula ingashintsha phakathi kwe-bypass nezifunda ezivaliwe ukuze kuqinisekiswe ukuthi udaka lugeleza enjini futhi luguqule amandla ngokuphumelelayo. Lapho ukugeleza kodaka nokucindezela kufinyelela kumanani ajwayelekile, i-valve core iya phansi ukuze ivale imbobo yokudlula; uma ukugeleza kuphansi kakhulu noma ipompo iyeka, isiphethu siphusha umgogodla we-valve phezulu, uvule i-bypass.
2. Imoto: Yenziwe nge-stator ne-rotor, i-stator ihlanganiswe ne-rubber, kuyilapho i-rotor iyisikulufu esiqinile. Ukusebenzelana phakathi kwe-rotor ne-stator kwakha i-helical sealing chamber, okuvumela ukuguqulwa kwamandla. Inombolo yamakhanda ku-rotor ithonya ubuhlobo phakathi kwejubane ne-torque: i-rotor enekhanda elilodwa inikeza isivinini esiphezulu kodwa i-torque ephansi, kuyilapho i-rotor enamakhanda amaningi yenza okuphambene.
3. I-Universal Joint: Le ngxenye iguqula ukunyakaza kweplanethi yenjini ibe ukuzungezisa kwe-eksisi egxilile ye-shaft yokushayela, idlulisela i-torque ekhiqiziwe nesivinini ku-drive shaft, ngokuvamile eklanywe ngesitayela esivumelana nezimo.
4. Shaft Shaft: Idlulisa amandla okujikeleza enjini ku-drill bit kuyilapho imelana nemithwalo ye-axial ne-radial ekhiqizwa ukucindezela kokubhoboza. Isakhiwo sethu seshafu yedrayivu sinelungelo lobunikazi, sinikeza isikhathi eside sokuphila kanye nomthamo wokulayisha ophakeme.

Izidingo Zokusebenzisa

Ukuqinisekisa ukusebenza kahle komshini we-PDM, lezi zidingo ezilandelayo kufanele zilandelwe:

1. Izidingo Zokubhoboza Fluid: I-PDM drill ingasebenza ngokuphumelelayo ngezinhlobo ezihlukahlukene zodaka lokumba, okuhlanganisa uwoyela osuselwe, u-emulsified, ubumba, ngisho namanzi ahlanzekile. I-viscosity kanye nokuminyana kodaka kunomthelela omncane emishinini, kodwa kuthonya ngokuqondile ukucindezela kwesistimu. Okuqukethwe kwesihlabathi odakeni kufanele kugcinwe ngaphansi kuka-1% ukuze kuvinjelwe imiphumela engemihle ekusebenzeni kwethuluzi. Imodeli yokubhoboza ngayinye inobubanzi obuthile bokugeleza bokufakwayo, obusebenza kahle kakhulu ngokuvamile obutholakala maphakathi nalobu bubanzi.
2. Izidingo Zengcindezi Yodaka: Lapho i-drill imisiwe, ukwehla kwengcindezi odakeni kuhlala kungashintshi. Njengoba i-drill bit ithinta phansi, ingcindezi yokumba iyanda, okuholela ekukhuphukeni kokucindezela kokujikeleza kodaka kanye nokucindezela kwepompo. Abasebenzisi bangasebenzisa ifomula elandelayo yokulawula:

I-Bit Pump Pressure=I-Circulation Pump Pressure +Ithuluzi Lokulayisha Ukucindezela Ukwehla

I-circulation pump pressure ibhekisela ekucindezelweni kwepompo lapho i-drill ingathintani nephansi, eyaziwa ngokuthi i-off-bottom pump pressure. Lapho i-bit pump pressure ifinyelela ukucindezela okuphezulu okunconyiwe, i-drill ikhiqiza i-torque efanele; ukwanda okuqhubekayo ekucindezelweni kokumba kuzophakamisa ingcindezi yepompo. Uma ingcindezi idlula umkhawulo womklamo omkhulu, kubalulekile ukunciphisa ingcindezi yokumba ukuze kuvinjwe ukulimala kwemoto.

Isiphetho

Kafushane, izidingo zokuklama nokusebenza kwe-PDM drill zixhumene kakhulu. Ngokulawula ngokuphumelelayo ukugeleza kodaka, ukucindezela, nezici zodaka, umuntu angaqinisekisa ukusebenza kahle nokuphephile kokumba. Ukuqonda kanye nokwenza kahle lezi zinhlaka ezibalulekile kungathuthukisa kakhulu ukusebenza kahle nokuphepha kwemisebenzi yokumba.