Iyini i-OCTG?
Kuhlanganisa i-Drill Pipe, Steel Casing Pipe kanye ne-Tubing
I-OCTG isifinyezo se-Oil Country Tubular Goods, ibhekisela kakhulu emikhiqizweni yamapayipi esetshenziswa ekukhiqizeni uwoyela negesi (imisebenzi yokumba). Ishubhu ye-OCTG ivamise ukukhiqizwa ngokususelwe ekucacisweni kwe-API noma ukucaciswa okujwayelekile okuhlobene. Kungase futhi kubhekwe njengegama elijwayelekile lamapayipi okubhoboza, amapayipi e-steel casing, okokufakwayo, ama-coupling kanye nezinsiza ezisetshenziswa embonini yasogwini kanye ne-offshore kawoyela negesi. Ukulawula izakhiwo zamakhemikhali nokusebenzisa izindlela zokwelapha ezihlukene zokushisa, amapayipi e-OCTG ahlukaniswa abe yizinto zokusebenza ezihlukene ezinamamaki angaphezu kweshumi.

Izinhlobo ze-Oil Country Tubular Goods (amapayipi we-OCTG)
Kunezinhlobo ezintathu eziyinhloko ze-Oil Country Tubular Goods, okuhlanganisa i-Drill pipe, i-Casing pipe, ne-Tubing pipe.

Ipayipi le-OCTG Drill – Ipayipi Lokubhoboza
Ipayipi lokubhoboza liyishubhu elisindayo, elingenamthungo elizungeza i-drill bit futhi lizungeza uketshezi lokumba. Ivumela uketshezi lokumba ukuthi lumpontshwe ngebhithi bese lusekela i-annulus. Ipayipi likwazi ukumelana ne-axial tension, i-torque ephezulu kakhulu kanye nomfutho ophakeme wangaphakathi. Kungakho ipayipi liqine ngokwedlulele futhi libalulekile emzamweni we-OCTG.
Ipayipi Lokubhoboza ngokuvamile lisho ipayipi Lensimbi Eliqinile elisetshenziswa ekubholeni, amazinga ku-API 5DP kanye ne-API SPEC 7-1.
Uma ungayiqondi kahle i-annulus kawoyela, isikhala phakathi kwebhokisi nepayipi nanoma yimaphi amashubhu amapayipi, i-casing noma amapayipi aseduze kwayo. I-Annulus ivumela uketshezi ukuthi lujikeleze emthonjeni. Ngakho-ke uma sikhuluma ngepayipi le-OCTG eliqinile noma elisindayo, sikhuluma ngepayipi le-Drill.
Ipayipi lensimbi yensimbi - Zinzisa umthombo
Amapayipi ensimbi asetshenziselwa ukuhlanganisa umgodi ombiwa phansi ukuze kutholwe uwoyela. Njengepayipi lokubhoboza, i-casing yepayipi yensimbi nayo ingamelana ne-axial tension. Leli ipayipi eliwububanzi obukhulu elishuthekwa emgodini ombiwe bese libanjwa ngosimende. I-casing ingaphansi kwe-axial tension yesisindo sayo esifile, ukucindezela kwangaphandle kwedwala elizungezile, kanye nokucindezela kwangaphakathi koketshezi lokuhlanza. Uma kufakwe kahle usimende endaweni, inqubo yokumba isizwa ngalezi zindlela ezilandelayo:
· I-Casing inamathisela intambo yokubhoboza futhi ivimbele ukwakheka okungazinzile kwangaphezulu ekungeneni.
· Ivimbela ukungcoliswa kwendawo yomthombo wamanzi.
· Ivumela ibhore yangaphakathi ebushelelezi yokufakwa kwemishini yokukhiqiza.
· Igwema ukungcoliswa kwendawo okukhiqizwa kuyo kanye nokulahlekelwa uketshezi.
· Ihlukanisa indawo yokucindezela okuphezulu ukusuka phezulu
· Futhi nokuningi

I-casing iyipayipi elinzima kakhulu elibaluleke kakhulu ku-OCTG.
OCTG Casing Pipe standard
Izindinganiso zepayipi le-Steel Casing ngokuvamile zibhekiselwa ku-API 5CT, Amabanga Avamile ku-J55/K55, N80, L80, C90, T95, P110 njll. Ubude obujwayelekile ku-R3 obungu-40 ft / 12 amamitha. Amapayipi okugcina amapayipi izinhlobo zokuxhuma ngokuvamile ziba ku-BTC ne-LTC, STC. Futhi ukuxhumeka kwe-premium nakho kuyadingeka ngobuningi kuphrojekthi yamapayipi kawoyela negesi.
I-Steel Casing Pipe Price
Izindleko zepayipi lensimbi yensimbi ziphansi kune-drill rod noma intengo yepayipi ye-OCTG, ngokuvamile engu-200 USD ngaphezu kwepayipi elivamile le-API 5L. Cabangela izindleko zezintambo + amalunga noma ukwelashwa kokushisa.
Ipayipi le-OCTG - Ukuthutha amafutha negesi phezulu
I-OCTG Pipe ingena ngaphakathi kwebhokisi ngoba leli ipayipi okuphuma ngalo uwoyela. I-Tubing ingxenye elula ye-OCTG futhi ivamise ukuza ngezigaba ezingama-30 ft (9 m), enokuxhumana okunentambo emikhawulweni yomibili. Leli payipi lisetshenziselwa ukuthutha igesi yemvelo noma uwoyela ongahluziwe usuka ezindaweni zokukhiqiza uyiswe ezikhungweni lapho uzocutshungulwa khona ngemva kokuphothula ukumba.
I-tube kumele ikwazi ukumelana nezingcindezi ngesikhathi sokukhishwa futhi imelane nemithwalo kanye nokuguqulwa okuhambisana nokukhiqiza nokupakisha kabusha. Njengoba nje igobolondo lenziwa, amashubhu nawo enziwe ngendlela efanayo, kodwa inqubo eyengeziwe yokuxuba isetshenziswa ukuze ibe mkhulu.
OCTG Pipe Standard
Ngokufanayo nezinga lepayipi legobolondo, ipayipi le-OCTG ku-API 5CT libuye libe nezinto ezifanayo (J55/K55, N80, L80, P110, njll.), kodwa ububanzi bepayipi bungaba ngu-4 1 /2″, futhi buphela. phezulu ngezinhlobo ezahlukene njenge-BTC, EUE, NUE, ne-premium. Ngokuvamile, ukuxhumana kwe-EUE okukhudlwana.