Zisebenza njani iikhola zokubhola ezingezizo ezemagnethi?

1. Umsebenzi wekhola yokubhola engeyomagnetic

Ekubeni zonke izixhobo zokulinganisa imagnethi zibona intsimi ye-geomagnetic ye-wellbore xa zilinganisa indlela i-wellbore ebekwe ngayo, isixhobo sokulinganisa kufuneka sibe kwindawo engeyiyo imagnethi. Nangona kunjalo, ngexesha lenkqubo yokubhola, izixhobo zokubhola zihlala zinemagnethi kwaye zine-magnetic field, echaphazela izixhobo zokulinganisa imagnethi kwaye ayinakufumana ulwazi oluchanekileyo lokulinganisa indlela ye-wellbore. Ukusetyenziswa kwee-drill collars ezingezizo imagnethi kunokubonelela ngendawo engeyiyo imagnethi kwaye ibe neempawu zee-drill collars ekubholeni.

Umgaqo wokusebenza wekhola yokugrumba engeyomagnethi uboniswe kumfanekiso. Ekubeni imigca yentsimi yemagnethi yokuphazamiseka engaphezulu nangaphantsi kwekhola yokugrumba ingenampembelelo kwisixhobo sokulinganisa, imeko-bume engeyomagnethi yenzelwe isixhobo sokulinganisa imagnethi, ukuqinisekisa ukuba idatha elinganiswe sisixhobo sokulinganisa imagnethi iyinyani.

2. Izixhobo zekhola ezingezozamagnethi zokubhola

Izixhobo zekhola yokubhola ezingezizo zemagnethi ziquka i-Monel alloy, intsimbi ye-chromium-nickel, intsimbi ye-austenitic esekelwe kwi-chromium kunye ne-manganese, intsimbi ye-copper-plated, intsimbi ye-SMFI engezizo zemagnethi, intsimbi ye-manganese-chromium-nickel yasekhaya, njl.

I-Landrill enika iikhola zokubhola ezisemgangathweni kwaye zijikelezwe ukusuka kwi-3-1/8''OD ukuya kwi-14''OD ngokweenkcazo ze-API, NS-1 okanye ze-DS-1.