Isishwankathelo sePDM Drill

I-PDM drill (i-Progressive Displacement Motor drill) luhlobo lwesixhobo sokomba samandla e-downhole esixhomekeke kumbane wokugaya ukuguqula amandla ombane kumandla omatshini. Umgaqo wayo wokusebenza ubandakanya ukusebenzisa impompo yodaka ukuthutha udaka ngevalve ye-bypass ukuya kwi-motor, apho umahluko woxinzelelo lwenziwa kwindawo yokungena kunye nokuphuma kwemoto. Lo mahluko uqhuba i-rotor ukuba ijikeleze i-axis ye-stator, ekugqibeleni idlulisa isantya esijikelezayo kunye ne-torque ngokusebenzisa i-joint jikelele kunye ne-shaft ye-drill kwi-drill bit, iququzelele imisebenzi esebenzayo yokomba.

Amacandelo Angundoqo

I-PDM drill iquka amacandelo amane angundoqo:

1. Ivalve yokudlula: Iquka umzimba wevalvu, umkhono wevalvu, isiseko sevalve, kunye nentwasahlobo, ivalve yokudlula inokutshintsha phakathi kwe-bypass kunye neendawo ezivaliweyo ukuze kuqinisekiswe ukuba udaka luhamba ngemoto kwaye luguqula ngokufanelekileyo amandla. Xa udaka kunye noxinzelelo lufikelela kumaxabiso asemgangathweni, i-valve core ihla ukuze ivale i-port bypass port; ukuba ukuhamba kuphantsi kakhulu okanye ipompo iyeka, intwasahlobo ityhala i-valve core, ivula i-bypass.
2. Imoto: Yenziwe nge-stator kunye ne-rotor, i-stator ifakwe i-rubber, ngelixa i-rotor i-screw-shelled screw. Ukudibana phakathi kwe-rotor kunye ne-stator yenza i-helical yokutywinwa kwegumbi, eyenza ukuguqulwa kwamandla. Inani leentloko kwi-rotor lichaphazela ubudlelwane phakathi kwesantya kunye ne-torque: i-rotor enentloko enye inikezela ngesantya esiphezulu kodwa i-torque ephantsi, ngelixa i-rotor enentloko eninzi yenza okuchaseneyo.
3. Universal Joint: Eli candelo liguqula ukuhamba kweplanethi ye-motor kwi-fixed-axis rotation ye-drive shaft, ukuhambisa i-torque eyenziwe kunye nesantya kwi-drive shaft, ngokuqhelekileyo eyilwe ngendlela eguquguqukayo.
4. Ishaft yokuqhuba: Idlulisela amandla ajikelezayo emoto kwi-drill bit ngelixa ikwazi ukumelana nemithwalo ye-axial kunye ne-radial eyenziwa kuxinzelelo lokomba. Ulwakhiwo lwethu lweshaft yokuqhuba lunelungelo elilodwa lomenzi, lubonelela ubomi obude kunye nomthamo ophezulu womthwalo.

IiMfuno zokuSebenzisa

Ukuqinisekisa ukusebenza ngokufanelekileyo kwe-PDM drill, ezi mfuno zilandelayo kufuneka zilandelwe:

1. IiMfuno zoGulo loKwemba: I-PDM drill inokusebenza ngokufanelekileyo kunye neentlobo ezahlukeneyo zodaka lokugaya, kuquka i-oyile-based, i-emulsified, udongwe, kunye namanzi ahlambulukileyo. I-viscosity kunye nokuxinana kodaka kunempembelelo encinci kwisixhobo, kodwa zichaphazela ngokuthe ngqo uxinzelelo lwenkqubo. Isiqulatho sesanti eludakeni kufuneka sigcinwe ngaphantsi kwe-1% ukuthintela iziphumo ezingalunganga ekusebenzeni kwesixhobo. Imodeli nganye ye-drill inoluhlu oluthile lokuhamba kwegalelo, kunye nokusebenza kakuhle okuqhelekileyo ngokuqhelekileyo kufumaneka kumbindi wolu luhlu.
2. IiMfuno zoxinzelelo lodaka: Xa i-drill inqunyanyisiwe, ukuhla koxinzelelo kudaka kuhlala kuhleli. Njengoko i-drill bit idibanisa ezantsi, uxinzelelo lokugaya luyanda, olukhokelela ekunyukeni koxinzelelo lokujikeleza kodaka kunye noxinzelelo lwempompo. Abasebenzisi banokusebenzisa le fomula ilandelayo yolawulo:

Uxinzelelo lweMpompo yeBit=Uxinzelelo lweMpompo yokuBoleka +Uxinzelelo loMpampu wesixhobo Wehla

Uxinzelelo lwempompo yokujikeleza lubhekisela kuxinzelelo lwempompo xa i-drill ingadibanisi nezantsi, eyaziwa ngokuba yi-off-bottom pump pressure. Xa i-bit pump pressure ifikelela kuxinzelelo oluphezulu olucetyiswayo, i-drill ivelisa i-torque efanelekileyo; ukwanda okungaphezulu koxinzelelo lokomba kuya kuphakamisa uxinzelelo lwempompo. Ukuba uxinzelelo lungaphaya kowona mda uphezulu woyilo, kubalulekile ukunciphisa uxinzelelo lokomba ukuthintela ukonakala kwemoto.

Ukuqukumbela

Isishwankathelo, iimfuno zoyilo kunye nokusebenza kwe-PDM drill zidibene ngokusondeleyo. Ngokulawula ngokufanelekileyo ukuhamba kodaka, uxinzelelo, kunye neempawu zodaka, umntu unokuqinisekisa imisebenzi yokwemba esebenzayo nekhuselekileyo. Ukuqonda kunye nokuqonda ezi parameters zibalulekileyo kunokunyusa kakhulu ukusebenza kakuhle kunye nokhuseleko lwemisebenzi yokomba.