Yintoni i-OCTG?
Ibandakanya uMbhobho wokuDrila, umbhobho weNsimbi wokuCasa kunye neTubing
I-OCTG sisishunqulelo se-Oil Country Tubular Goods, ibhekisa ikakhulu kwiimveliso zemibhobho esetyenziswa kwimveliso yeoli kunye negesi (imisebenzi yokomba). Iityhubhu ye-OCTG iqhele ukwenziwa ngokusekwe kwiinkcukacha ze-API okanye imigangatho enxulumeneyo. Isenokuthi ithathwe njengegama eliqhelekileyo lemibhobho yokomba, imibhobho yentsimbi, izifakelo, amaqhina kunye nezincedisi ezisetyenziswa elunxwemeni nakwishishini le-oyile nerhasi elunxwemeni. Ukulawula iimpawu zeekhemikhali kunye nokusebenzisa unyango oluhlukeneyo lobushushu, iipayipi ze-OCTG zihlelwa kwizinto zokusebenza ezahlukeneyo ezinamabakala angaphezu kweshumi.

Iindidi zeLizwe leOli yeeMpahla zeTubula (imibhobho ye-OCTG)
Kukho iintlobo ezintathu eziphambili ze-Oil Country Tubular Goods, ezibandakanya i-Drill pipe, i-Casing pipe, kunye ne-Tubing pipe.

Umbhobho we-OCTG Drill – Umbhobho woKwemba
Umbhobho wokubhobhoza yityhubhu enzima, engenamthungo ejikeleza intwana yokomba kwaye ijikelezise ulwelo lokomba. Ivumela i-drilling fluid ukuba ifakwe kwi-bit kunye nokubuyisela i-annulus. Umbhobho unokumelana noxinzelelo lwe-axial, i-torque ephezulu kakhulu kunye noxinzelelo oluphezulu lwangaphakathi. Yiyo loo nto umbhobho womelele kakhulu kwaye ubalulekile kumzamo we-OCTG.
Umbhobho we-Drill ngokuqhelekileyo uthetha umbhobho wensimbi oqinileyo osetyenziselwa ukugaya, imigangatho kwi-API 5DP kunye ne-API SPEC 7-1.
Ukuba awuyiqondi i-annulus ye-oyile kakuhle, sisithuba esiphakathi kwe-casing kunye nombhobho okanye nayiphi na imibhobho yokubhobhoza, i-casing okanye imibhobho ejikeleze ngokukhawuleza. I-Annulus ivumela ulwelo ukuba lujikeleze equleni. Ke xa sithetha ngombhobho oqinileyo okanye onzima we-OCTG, sithetha ngombhobho we-Drill.
Umbhobho we-Steel Casing - Zinzisa umthombo
Imibhobho yesingxobo sentsimbi isetyenziselwa ukugudla iqula eligrunjwa emhlabeni ukuze kufunyanwe ioli. Kanye njengombhobho wokubhobhoza, i-casing yentsimbi yombhobho inokumelana noxinzelelo lwe-axial. Lo ngumbhobho onobubanzi obukhulu ofakwe kumngxuma ogrunjiweyo kwaye ubambeke endaweni yawo ngesamente. I-casing ixhomekeke kwi-axial tension yobunzima bayo obufile, uxinzelelo lwangaphandle lwelitye elijikelezileyo, kunye noxinzelelo lwangaphakathi lwe-purging fluid. Xa kufakwe isamente kakuhle, inkqubo yokomba incediswa ngolu hlobo lulandelayo:
· I-Casing incamathela umtya we-drill kwaye ithintela ukwakheka okungazinzanga okuphezulu ekungeneni.
· Ithintela ukungcoliseka kwendawo yequla lamanzi.
· Ivumela ukuzala kwangaphakathi okugudileyo kufakelo lwezixhobo zokuvelisa.
· Ithintela ukungcoliseka kwendawo yemveliso kunye nokulahleka kolwelo.
· Ikwahlula indawo yoxinzelelo oluphezulu ukusuka phezulu
· Kunye nokuninzi

I-casing ngumbhobho onzima kakhulu obaluleke kakhulu kwi-OCTG.
I-OCTG Casing Pipe umgangatho
Imigangatho yemibhobho ye-Steel Casing idla ngokubhekiswa kwi-API 5CT, amaBanga aqhelekileyo kwi-J55/K55, N80, L80, C90, T95, P110 njl njl. Ubude obuqhelekileyo kwi-R3 obuyi-40 ft / 12 yeemitha. Umbhobho we-Casing ugqiba iintlobo zoqhagamshelwano zihlala kwi-BTC kunye ne-LTC, i-STC. Kwaye uxhulumaniso lwe-premium luyafuneka ngobuninzi kwiprojekthi ye-oyile kunye negesi yepayipi.
Ixabiso lombhobho we-Steel Casing
Iindleko zombhobho we-steel casing uphantsi kune-drill rod okanye ixabiso lombhobho we-OCTG, elidla ngokuba yi-200 USD ephezulu kunombhobho oqhelekileyo we-API 5L. Qwalasela iindleko zemisonto + yamalungu okanye unyango lobushushu.
Umbhobho we-OCTG - Ukuthutha ioli kunye negesi ukuya phezulu
I-OCTG Pipe ingena ngaphakathi kwi-casing kuba lo ngumbhobho apho ioli iphuma khona. I-tubing yeyona ndawo ilula ye-OCTG kwaye iza ngokwesiqhelo kumacandelo angama-30 ft (9 m), kunye noqhagamshelo oludityanisiweyo kuzo zombini iziphelo. Lo mbhobho usetyenziselwa ukuthutha irhasi yendalo okanye i-oyile ekrwada ukusuka kwiindawo zemveliso ukuya kwiindawo apho iya kulungiswa khona emva kokugqitywa kokomba.
I-tube kufuneka ikwazi ukumelana noxinzelelo ngexesha lokukhutshwa kunye nokumelana nemithwalo kunye nokuguqulwa okuhambelana nokuvelisa kunye nokupakishwa kwakhona. Kanye nje ngokuba igobolondo yenziwe njani, iibhubhu nazo zenziwe ngendlela efanayo, kodwa inkqubo yokuxuba eyongezelelweyo isetyenziselwa ukuyenza ibe nzima.
Umgangatho wemibhobho ye-OCG
Ngokufana nomgangatho wombhobho weqokobhe, umbhobho we-OCTG kwi-API 5CT nayo inezinto ezifanayo (J55/K55, N80, L80, P110, njl.), kodwa ububanzi bombhobho bunokufikelela kwi-4 1 /2″, kwaye iphela. phezulu kwiindidi ezahlukeneyo njenge-BTC, EUE, NUE, kunye neprimiyamu. Ngokwesiqhelo, uqhagamshelo olutyebileyo lwe-EUE.