Yini i-Octg?

I-Octg yisifinyezo se-oyili yezwe tubular izimpahla, ikakhulukazi ibhekisela emikhiqizweni yepayipi esetshenziselwa ukukhiqizwa kwamafutha nokukhiqizwa kwegesi (imisebenzi yokumba). Amashubhu we-Octg ngokuvamile akhiqizwa ngokuya nge-API noma ukucaciswa okujwayelekile okujwayelekile.

Kunezinhlobo ezintathu eziphambili, kufaka phakathi ipayipi elishayelwa, ukubeka kanye neshubhu.

Ipayipi le-Drill yi-tube eqinile eqinile engashintshele i-drill bit futhi ijikeleze uketshezi lokumba. Ivumela uketshezi oludonsa ukuze lucindezelwe ngokubila ngephampu bese libuyela ku-annulus. Ipayipi lithwala ukungezwani kwe-axial, i-torque ephezulu kakhulu kanye nengcindezi yangaphakathi ephezulu.

I-Casing isetshenziselwa ukuhambisa i-borehole ebivukwa ngaphansi komhlaba ukuze uthole uwoyela. Njengezinduku zokudonsa nje, amapayipi ensimbi nawo nawo kufanele abekezelele ukungezwani kwe-axial. Leli yipayipi elikhulu elibuyisiwe elifakwe kwi-borehole futhi lihlelwe endaweni. Isisindo sokuzithoba, ingcindezi ye-axial, ingcindezi yangaphandle emadwaleni azungezile, kanye nengcindezi yangaphakathi eyenziwe yi-fluid flush yonke ikhiqiza ukungezwani kwe-axiid.

I-tubing Pipe ingena ngaphakathi kwepayipi elicekile ngoba yipayipi lapho uwoyela enza indlela aphume ngayo. I-tubing yingxenye elula ye-Octg, ngokuxhumeka okuhlanganisiwe emikhawulweni yomibili. Ipayipi lingasetshenziselwa ukuthutha igesi yemvelo noma uwoyela ongahluziwe kusuka ekwakhekeni kokukhiqiza kuya ezikhungweni, ezizocutshungulwa ngemuva kokumba.