Iintlobo ezahlukeneyo zemibhobho ye-casing kwishishini leoli kunye negesi

Kwishishini leoli kunye negesi, iintlobo ezine ze-casing zisetyenziswa ngokuqhelekileyo:

I-1.I-Conduit: Umjelo ngumjelo wokuqala ofakelweyo ukuxhasa ubunzima besixhobo sokomba kunye nokuthintela umngxuma wokutsala ukuba ungawi ngexesha lokomba. I-Conductor Casing: Ngokuqhelekileyo, i-conductor casing yeyona bhokisi inkulu yedayamitha esetyenziswa kwimisebenzi yokomba. Ubukhulu buvela kwi-20 ukuya kwi-intshi ye-42 ububanzi. I-conductor casing ngokuqhelekileyo yenziwe nge-low-grade carbon steel, njenge-J55 okanye i-N80, ukubonelela ngokuzinza ngexesha lokuqala lokugaya.

2. Isingxobo somphezulu: sisingxobo sesibini esifakelwe ukubonelela ngokhuseleko kwiindawo zamanzi ahlaziyekileyo kunye nokuthintela ukungcoliseka. I-diameter yayo idla ngokuba nkulu kunendlu yomqhubi. Isingxobo soMphezulu: Isingxobo somphezulu siseti yokuqala eseti equleni emva kokugrumba umngxuma womqhubi. Inika ukhuseleko kumanzi aphantsi komhlaba angekho nzulu kwaye ibeka yodwa ukumila okuphezulu. Iisayizi eziqhelekileyo ezisetyenziswayo kwi-surface casing yi-13⅜ ukuya kwi-intshi ezingama-20 ububanzi. Amabakala ezinto eziphathekayo kwi-casing surface angabandakanya amanqanaba entsimbi ye-carbon efana ne-J55, i-K55, i-N80, okanye izixhobo eziphezulu ezifana ne-L80 okanye i-C95

3. I-Intermediate Casing: Le casing ifakwe kubunzulu obahlukeneyo ngokuxhomekeke kwiimeko zequla kwaye isetyenziselwa ukukhusela i-wellbore kumanzi okwakheka kunye noxinzelelo. Inika inkxaso eyongezelelweyo kunye nokuzihlukanisa kwiqula. ICasing ePhakathi: Isingxobo esiphakathi sibekwe kubunzulu obuphakathi kwaye sibonelela ngenkxaso eyongezelelweyo kumthombo. Ubungakanani be-Casing obuphakathi buqala kwi-7 ukuya kwi-intshi ye-13⅜ ububanzi, kuxhomekeke kuyilo lomthombo. Amanqaku ezinto eziphathekayo kwi-casing ephakathi angabandakanya i-L80, i-C95, okanye amabakala aphezulu-amandla afana ne-T95 okanye i-P110.

4. Isingxobo seMveliso: Le yicasing yokugqibela efakwe equleni emva kokuba ukugrumba kugqityiwe. Ibonelela ngolwakhiwo lwemfezeko kwiqula kwaye yahlula ummandla wemveliso kulwakhiwo olujikelezileyo ukuthintela ukuvuza kunye nokugcina imveliso elungileyo. Ezi ntlobo zine ze-casing ziqhele ukusetyenziswa kwishishini leoli kunye negesi, kodwa ukwahluka kunokubakho ngokuxhomekeke kwiimeko ezithile zequla kunye neemfuno zolawulo. ICasing ePhakathi: Isingxobo esiphakathi sibekwe kubunzulu obuphakathi kwaye sibonelela ngenkxaso eyongezelelweyo kumthombo. Ubungakanani be-Casing obuphakathi buqala kwi-7 ukuya kwi-intshi ye-13⅜ ububanzi, kuxhomekeke kuyilo lomthombo. Amanqaku ezinto eziphathekayo kwi-casing ephakathi angabandakanya i-L80, i-C95, okanye amabakala aphezulu-amandla afana ne-T95 okanye i-P110.

Kubalulekile ukuqaphela ukuba ubukhulu becasing kunye namabakala ezinto eziphathekayo anokwahluka ngokusekelwe kwiimfuno ezithile zequla kunye nemigangatho yengingqi. Ii-alloys ezahlukeneyo, izinto ezikwaziyo ukumelana nomhlwa, kunye nezincedisi nazo zinokusetyenziswa ngokuxhomekeke kwiimeko zequla, ezinjengendawo engqongileyo yerhasi emuncu okanye uxinzelelo oluphezulu/ubushushu obuphezulu.