Brushless DC motors for down hole and directional drilling.
Today over 85 percent of the world’s energy use is based on fossil fuel sources such as coal, oil and gas. However reaching the resources requires the need to drill deeper than ever before which is not a simple exercise. Down hole deep drilling equipment opens the possibility of recovering resources from depths greater than 2.5km. Recent developments allowing down hole drilling equipment to be directionally controlled has given access to formerly inaccessible oil reserves. Now drilling to 5km down and 11km across is even possible.
Extremely tough environmental conditions are commonplace globally for drilling equipment, the demands on the drill head in particular are at the highest. Brushed and brushless DC motors need to withstand the intense vibration, pressure and heat. The heavy duty brushless DC motor range produced by maxon are not only designed for but are rated and tested to meet these conditions. Combined with new electronics technology they allow for improved control and monitoring of drilling procedures.
Mud flow power and more.
Using magnetic couplings a back driven motor becomes a generator. Using the mud flow for the drill turbine the brushless DC motor power is then harnessed for localised electronics in the drill head avoiding the need for batteries. The drill head position can also be detected and adjusted on the fly. This process is called Measurement While Drilling (MWD). This technology converts sensor data into pulses that are transmitted to the drilling platform. maxon heavy duty motors can actuate the mechanism, forming the communication pulses. maxon heavy duty DC motors also actuate hydraulic valves within the drill head.
maxon heavy duty motors are also available with corresponding gearboxes. The gearboxes are manufactured with the same extreme operating environments in mind. The applications typically require elevated torque for very low duty cycles. For example: Generating the mud pulses and actuating the hydraulic valves. A unique feature of the heavy duty gearbox is the through holes in the gear housing. These are ports that allow the gearhead to be submerged in oil and they facilitate the possibility for oil to circulate through the gearbox and provide elevated heat-sinking. The heavy duty DC motor also contains the oil ports and can also be used submerged in oil or in free air. The gearmotors are manufactured entirely devoid of structural adhesives giving it the capability of withstanding extreme temperatures. This is also of particular importance when using the motor in vacuum conditions avoiding the contamination of the vacuum via outgassing. The heavy duty motor range is designed to withstand temperatures over 240°C at pressures up to 1,733 atmospheres. They can withstand vibrations to 25 Grms, impacts to 100 G.
High efficiency DC motors at great depths
The maxon heavy duty motor range features efficiencies of up to 88% in air and over 70% submerged in oil. This makes it an ideal solution for any extreme environment such as aerospace and heavy industry. They have zero cogging making them easy to control and suitable for precise positioning.
© maxon motor
Mashine za kusaga zisizo na brashi za DC kwa mashine za kuchimba visima na mashine za kuchimba visima. Leo, zaidi ya asilimia 85 ya matumizi ya nishati duniani yanategemea vyanzo vya mafuta kama vile makaa ya mawe, mafuta na gesi. Hata hivyo kufikia rasilimali inahitaji haja ya kuchimba kina zaidi kuliko hapo awali ambayo si zoezi rahisi. Vifaa vya kuchimba visima vya chini vinafungua uwezekano wa kupata rasilimali kutoka kwa kina cha zaidi ya kilomita 2.5. Maendeleo ya hivi karibuni yanayoruhusu vifaa vya kuchimba mashimo vya kudhibitiwa kwa mwelekeo yamewezesha upatikanaji wa akiba za mafuta ambazo hapo awali hazikuweza kufikiwa. Sasa kuchimba kwa kina cha kilomita tano chini na kwa upana wa kilomita 11 ni uwezekano hata. Hali ngumu sana ya mazingira ni ya kawaida ulimwenguni kwa vifaa vya kuchimba visima, mahitaji ya kichwa cha kuchimba visima hasa ni ya juu zaidi. Brushed na brushless DC motors haja ya kuvumilia vibration kali, shinikizo na joto. Maxon's Heavy Duty Brushless DC Motors ni moja ya injini za umeme za kawaida zinazotengenezwa na Maxon, na zinajumuisha injini za umeme za umeme zinazotengenezwa na Maxon. Zikiwa zimeunganishwa na teknolojia mpya ya elektroniki, zinaweza kuboresha udhibiti na ufuatiliaji wa taratibu za kuchimba visima. Nguvu ya mtiririko wa matope na zaidi. Kutumia couplings sumaku nyuma kuendeshwa motor inakuwa jenereta. Kutumia mtiririko wa matope kwa turbine ya drill, nguvu ya injini ya brushless DC hutumiwa kwa elektroni za ndani katika kichwa cha drill, kuepuka haja ya betri. Msimamo wa kichwa cha drill pia inaweza kugunduliwa na kurekebishwa juu ya kuruka. Utaratibu huu huitwa Upimaji Wakati wa Kuchimba (MWD). Teknolojia hii hubadilisha data ya sensor kuwa pulsi ambazo husambazwa kwenye jukwaa la kuchimba visima. maxon injini nzito kazi inaweza kuendesha utaratibu, kuunda mawasiliano pulses. maxon nzito kazi DC motors pia kuendesha valves hydraulic ndani ya kichwa drill. maxon injini nzito kazi pia zinapatikana na gearboxes zinazolingana. gearboxes ni viwandani na mazingira sawa ya kukandamiza uendeshaji katika akili. Maombi kawaida zinahitaji torque kuongezeka kwa mzunguko kazi ya chini sana. Kwa mfano: Kuzalisha matope pulses na kuendesha valves hydraulic. Kipengele cha kipekee cha gearbox nzito ni kupitia mashimo katika nyumba gear. Hii ni bandari ambayo kuruhusu gearhead kuwa kuzamishwa katika mafuta na wao kuwezesha uwezekano wa mafuta kuzunguka kupitia gearbox na kutoa kuongezeka joto-sinking. Heavy kazi DC motor pia ina bandari mafuta na pia inaweza kutumika kuzamishwa katika mafuta au katika hewa ya bure. Gearmotors ni viwandani kabisa bila adhesives muundo kutoa uwezo wa kuvumilia joto kali. Hii pia ni ya umuhimu maalum wakati wa kutumia motor katika hali ya utupu kuepuka uchafuzi wa utupu kupitia outgassing. Kwa sababu ya uwezo wake wa kuhimili joto la juu ya 240 ° C, injini za kazi nzito zinaweza kukabiliana na shinikizo la hewa ya hali ya juu ya 1,733. Maxon inaweza kustahimili vibrations hadi 25G, athari hadi 100G, na hasara ya juu DC motors katika kina kikubwa. maxon nzito kazi motor mbalimbali makala ufanisi wa hadi 88% katika hewa na zaidi ya 70% kuzamishwa katika mafuta. Hii inafanya kuwa ufumbuzi bora kwa mazingira yoyote kali kama vile anga na viwanda nzito. Wao kuwa na zero cogging kufanya yao rahisi kudhibiti na yanafaa kwa ajili ya nafasi sahihi. Maxon Motor