He aha ka OCTG?
Loaʻa iā Drill Pipe, Steel Casing Pipe a me Tubing
ʻO OCTG ka pōkole o Oil Country Tubular Goods, e pili ana i nā huahana paipu i hoʻohana ʻia i ka hana ʻaila a me ka hau (nā hana drill). Hana ʻia nā paipu OCTG ma muli o nā kikoʻī API a i ʻole nā ​​kikoʻī maʻamau e pili ana. Hiki ke noʻonoʻo ʻia he inoa maʻamau no nā paipu drill, nā paipu pahu kila, nā mea hoʻohui, nā hui a me nā mea pono i hoʻohana ʻia ma ka ʻoihana ʻaila a me ka ʻoihana kinoea. No ka mālama ʻana i nā waiwai kemika a hoʻohana i nā ʻano lapaʻau wela like ʻole, ua hoʻokaʻawale ʻia nā paipu OCTG i nā mea hana like ʻole me nā papa he ʻumi.

Nā ʻano o ka ʻAiʻa ʻĀina Tubular Goods (OCTG pipes)
ʻEkolu mau ʻano nui o ka Oil Country Tubular Goods, e komo pū me Drill pipe, Casing pipe, a me Tubing pipe.

OCTG Drill pipe – Paipu no ka wili
ʻO ka paipu Drill he paipu kaumaha, ʻaʻohe seamless e hoʻohuli ai i ka bit drill a hoʻokae i ka wai wili. Hāʻawi ia i ka wai wili e hoʻoheheʻe ʻia ma o ka bit a hoʻihoʻi i ka annulus. Hiki i ka paipu ke kū i ka axial tension, kiʻekiʻe kiʻekiʻe torque a me ke kiʻekiʻe o loko. ʻO ia ke kumu ikaika loa a koʻikoʻi ka paipu i ka hoʻoikaika OCTG.
ʻO Drill Pipe ka mea maʻamau ka paipu kila Durable i hoʻohana ʻia i ka wili ʻana, nā kūlana ma API 5DP a ​​me API SPEC 7-1.
Inā ʻaʻole ʻoe maopopo i ka annulus o ka ʻaila punawai, ʻo ia ka manawa ma waena o ka pahu a me ka paipu a i ʻole kekahi paipu paipu, pahu a paipu paha a puni ia. Hiki i ka Annulus ke kaapuni i ka wai i loko o ka pūnāwai. No laila ke kamaʻilio nei mākou e pili ana i ka paipu OCTG ikaika a kaumaha paha, ke kamaʻilio nei mākou e pili ana i ka paipu Drill.
ʻO ka paipu pahu kila – Hoʻopaʻa i ka luawai
Hoʻohana ʻia nā paipu pahu kila e laina i ka lua e ʻeli ʻia i ka lepo no ka loaʻa ʻana o ka ʻaila. E like me ka paipu drill, hiki i ka pahu paipu kila ke kū i ka ʻāʻī axial. He paipu anana nui kēia i hoʻokomo ʻia i loko o kahi lua i wili ʻia a hoʻopaʻa ʻia me ka sima. Hoʻopili ʻia ka pahu i ke ʻano axial o kona kaumaha make, ke kaomi waho o ka pōhaku e hoʻopuni ana iā ia, a me ke kaomi kūloko o ka wai hoʻomaʻemaʻe. Ke hoʻopaʻa maikaʻi ʻia ma kahi, kōkua ʻia ke kaʻina hana wili ma nā ʻano penei:
· Hoʻopaʻa ʻo Casing i ke kaula drill a pale i ka hoʻokumu ʻana o luna mai ke ana ʻana.
· Kāohi ia i ka hoʻohaumia ʻana o ka luawai wai.
· Hāʻawi ia i ka paheʻe o loko no ka hoʻokomo ʻana i nā lako hana.
· Hōʻalo ia i ka haumia o ka wahi hana a me ka nalowale o ka wai.
· Hoʻokaʻawale ia i ka wahi kaomi kiʻekiʻe mai ka ʻili
· A ʻoi aku

ʻO ka pahu he paipu koʻikoʻi koʻikoʻi i ka OCTG.
OCTG Casing Pipe maʻamau
Steel Casing paipu hae maʻamau i ka API 5CT, Common Grades ma J55/K55, N80, L80, C90, T95, P110 etc. Ka lōʻihi maʻamau i R3 i nominal ma 40 ft / 12 mika. Hoʻopau nā ʻano pili i ka pahu pahu pahu ma BTC a me LTC, STC. A koi ʻia nā pili pili kālā i nā mea nui i loko o kahi papahana paipu aila a me ke kinoea.
Kumukuai o ka Paipu Paipu
ʻOi aku ka haʻahaʻa o ke kumu kūʻai o ka paipu pahu kila ma mua o ke koʻokoʻo drill a i ʻole ke kumukūʻai paipu OCTG, ʻo ia ka mea maʻamau ʻo 200 USD ma mua o ka paipu API 5L maʻamau. E noʻonoʻo i ke kumukūʻai o nā kaula + ami a i ʻole ka mālama wela.
OCTG Pipe - Ka lawe ʻana i ka aila a me ke kinoea i luna
Hele ʻo OCTG Pipe i loko o ka pahu no ka mea ʻo ia ka paipu e pakele ai ka ʻaila. ʻO ka paipu ka ʻāpana maʻalahi loa o ka OCTG a loaʻa mau i nā ʻāpana 30 ft (9 m), me nā pilina pili ma nā kihi ʻelua. Hoʻohana ʻia kēia pipeline no ka lawe ʻana i ke kinoea maoli a i ʻole ka aila ʻaila mai nā wahi hana i nā hale hana kahi e hana ʻia ai ma hope o ka pau ʻana o ka wili ʻana.
Pono e hiki i ka paipu ke pale aku i nā kaomi i ka wā o ka unuhi ʻana a me ka pale ʻana i nā ukana a me nā deformations e pili ana i ka hana ʻana a me ka repackaging. E like me ke ʻano o ka hana ʻia ʻana o ka pūpū, hana ʻia nā paipu ma ke ʻano like, akā hoʻohana ʻia kahi kaʻina hui ʻana i mea e mānoanoa ai.
OCTG Paipu Kūlana
E like me ka paipu pūpū maʻamau, ʻo ka paipu OCTG ma API 5CT ka mea like (J55/K55, N80, L80, P110, a me nā mea ʻē aʻe), akā hiki ke anawaena o ka paipu i 4 1/2 ″, a pau ia. i nā ʻano like ʻole e like me BTC, EU, NUE, a me ka uku. ʻO ka maʻamau, ʻoi aku ka mānoanoa o nā pilina o EUE.