OCTG ke eng?
E kenyelletsa Pipe ea Drill, Pipe ea Casing ea tšepe le Tubing
OCTG ke khutsufatso ea Oil Country Tubular Goods, haholo-holo e bua ka lihlahisoa tsa liphaephe tse sebelisoang tlhahiso ea oli le khase (ts'ebetso ea ho cheka). OCTG tubing hangata e etsoa ho ipapisitsoe le litlhaloso tsa API kapa lintlha tse amanang le maemo. E ka boela ea nkuoa e le lebitso le akaretsang bakeng sa lipeipi tsa ho cheka, liphaephe tsa casing tsa tšepe, li-fittings, likhokahano le lisebelisoa tse sebelisoang indastering ea oli le khase e lebopong la leoatle le kantle ho naha. Ho laola thepa ea lik'hemik'hale le ho sebelisa mekhoa e fapaneng ea phekolo ea mocheso, liphaephe tsa OCTG li arotsoe ka lisebelisoa tse fapaneng tsa ts'ebetso tse nang le lihlopha tse fetang leshome.

Mefuta ea Lihlahisoa tsa Tubular naheng ea Oli (liphaephe tsa OCTG)
Ho na le mefuta e meraro ea mantlha ea Thepa ea Naha ea Oli, e kenyelletsang pipe ea ho phunya, pipe ea Casing le pipe ea Tubing.

OCTG Drill pipe - Pipe bakeng sa ho phunya
Pipe ea ho phunya ke tube e boima, e se nang moroallo e potolohang karoloana ea ho phunya le ho potoloha mokelikeli oa ho phunya. E lumella mokelikeli oa ho phunya hore o pompeloe ka karoloana ebe o tšehetsa annulus. Pipe e khona ho mamella tsitsipano ea axial, torque e phahameng haholo le khatello e phahameng ea kahare. Ke ka lebaka leo phala e leng matla haholo 'me e le ea bohlokoa boitekong ba OCTG.
Drill Pipe hangata e bolela phala ea tšepe e tšoarellang e sebelisoang ho cheka, litekanyetso ho API 5DP le API SPEC 7-1.
Haeba u sa utloisise annulus ea oli hantle, ke sebaka se pakeng tsa casing le piping kapa liphaephe leha e le life tsa liphaephe, casing kapa liphaephe tse potolohileng hang-hang. Annulus e lumella mokelikeli ho potoloha selibeng. Kahoo ha re bua ka pipe ea OCTG e matla kapa e boima, re bua ka Pipe ea Drill.
Pipe ea Casing ea tšepe - Ho tsitsisa seliba
Liphaephe tsa lik'hasete tsa tšepe li sebelisetsoa ho thea sekoti se ntseng se chekoa fatše ho fumana oli. Joalo ka phala ea ho phunya, casing ea tšepe ea tšepe e ka mamella tsitsipano ea axial. Ena ke phala ea bophara bo boholo e kenngoeng ka har'a sekoti se phuntsoeng 'me se ts'oaroe sebakeng se nang le samente. Casing e tlas'a khatello ea axial ea boima ba eona bo shoeleng, khatello ea ka ntle ea lejoe le potolohileng eona, le khatello ea ka hare ea metsi a hloekisang. Ha e tiisitsoe hantle, mokhoa oa ho cheka o thusoa ka litsela tse latelang:
· Casing e khomaretsa khoele ea ho cheka 'me e thibela sebopeho se sa tsitsang sa bokaholimo hore se se ke sa oela.
· E thibela tšilafalo ea libaka tsa liliba tsa metsi.
· E lumella boreleli ka hare bore bakeng sa ho etsa thepa ea ho instola tse.
· E qoba tšilafalo ea sebaka sa tlhahiso le tahlehelo ea mokelikeli.
· E arola sebaka sa khatello e phahameng ho tloha holimo
· Le ho feta

Casing ke phala e boima haholo ea bohlokoa ho OCTG.
OCTG Casing Pipe e tloaelehileng
Steel Casing pipe maemo a atisa ho bitsoa API 5CT, Common Grades ka J55/K55, N80, L80, C90, T95, P110 joalo-joalo. Bolelele bo tloaelehileng ho R3 boo ka lebitso la 40 ft / 12 metres. Mefuta ea likhokahano tsa lipeipi tsa casing hangata li BTC le LTC, STC. 'Me likhokahano tsa premium li boetse li hlokahala ka bongata projekeng ea lipeipi tsa oli le khase.
Theko ea Pipe ea Casing ea tšepe
Litsenyehelo tsa phala ea tšepe ea tšepe li tlase ho feta theko ea li-drill rod kapa OCTG pipe, eo hangata e leng 200 USD e phahameng ho feta e tloaelehileng ea API 5L pipe. Nahana ka litšenyehelo tsa likhoele + manonyeletso kapa kalafo ea mocheso.
OCTG Pipe - Ho tsamaisa oli le khase holimo
OCTG Pipe e kena ka har'a casing hobane ena ke phala eo oli e tsoang ka eona. Li-tubing ke karolo e bonolo ka ho fetisisa ea OCTG 'me hangata e tla ka likarolo tsa 30 ft (9 m), e nang le likhokahano tse khoele lipheletsong ka bobeli. Pipe ena e sebelisetsoa ho tsamaisa khase ea tlhaho kapa oli e tala ho tloha libakeng tsa tlhahiso ho ea litsing tseo e tla sebetsoa ho tsona ka mor'a hore ho cheka ho phethoe.
The tube e tlameha ho khona ho mamella likhatello nakong ea ho ntšoa le ho mamella meroalo le mefokolo e amanang le tlhahiso le ho paka bocha. Feela joaloka khetla e entsoeng ka eona, li-tubes li boetse li etsoa ka tsela e ts'oanang, empa mokhoa o eketsehileng oa ho kopanya o sebelisoa ho etsa hore o be motenya.
Tekanyetso ea Pipe ea OCTG
Joalo ka maemo a phala ea khetla, phala ea OCTG ho API 5CT le eona e na le thepa e tšoanang (J55/K55, N80, L80, P110, joalo-joalo), empa bophara ba phala bo ka fihla ho 4 1 /2 ″, 'me ea fela. ka mefuta e fapaneng e kang BTC, EUE, NUE, le premium. Hangata, likhokahano tse teteaneng tsa EUE.