A na-emepụta ọkpọkọ casing API dịka ọkọlọtọ API 5CT siri dị. A na-ejikarị ya arụ ọrụ n'okpuru ala
iji tinye ma ọ bụ chebe ahịrị ndị ọrụ ka emebie.
Nkọwapụta:
Ọkọlọtọ: API 5CT.
enweghị nkebi nchara casing na tubing ọkpọkọ: 114.3-406.4mm
welded ígwè casing na tubing ọkpọkọ: 88.9-660.4mm
Akụkụ elu: 6.0mm-219.0mm
Ọkpụrụkpụ mgbidi: 1.0mm-30 mm
Ogologo: max 12m
Ihe: J55, K55, N80-1, N80-Q, L80-1, P110, wdg.
Njikọ eriri: STC, LTC, BTC, XC na njikọ adịchaghị
A na-eji ya eme ihe n'ọtụtụ ebe na ọrụ ciment na-arụ ọrụ dị ka onye na-edebe mgbidi maka mgbidi mmanụ na mmanụ gas ma ọ bụ olulu mmiri. Ọ bụ
etinyere ya n'ime olulu mmiri ma tinye ciment n'ebe ahụ iji chebe ma ọdịdị dị n'okpuru ala na olulu mmiri ka ọ ghara ịdaba na
kwe ka mmiri na-egwupụta ihe na-ekesa na mmịpụta were were mee.
Isi ọkwa nchara nke API 5CT: API 5CT J55, API 5CT K55, API 5CT N80, API 5CT L80, API 5CT P110. Standardkpụrụ Mba Nile a
Ọdabara na njikọ ndị a dị ka ISO 10422 ma ọ bụ API Spec 5B:
Mkpirisi eriri eriri gburugburu (STC);
ogologo eriri eriri ogologo (LC);
eriri eriri buttress (BC);
ihe mkpuchi nke oke ahịrị (XC);
tubing na-adịghị ewe iwe (NU);
tubing iwe iwe (EU);
integral nkwonkwo tubing (IJ).
Maka njikọ ndị dị otú ahụ, ọkọlọtọ mba ụwa a na-akọwapụta ọnọdụ nnyefe teknụzụ maka njikọta na nchedo eri.
Maka ọkpọkọ nke ọkọlọtọ mba ụwa kpuchiri, kọwapụtara nha, oke, ọkpụrụkpụ mgbidi, akara ule na njedebe ọdabara.
Enwere ike itinye ọkọlọtọ mba ụwa a na tubulars nwere njikọ anaghị ekpuchi ụkpụrụ ISO/ API.
Ngwakọta kemịkalụ
| Ọkwa | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≤ | Ni ≤ | Cu≤ | Mo≤ | V≤ | Als≤ |
| API 5CT J55 | 0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
0.020 |
0.015 |
0.15 |
0.20 |
0.20 |
/ |
/ |
0.020 |
| API 5CT K55 | 0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
0.020 |
0.015 |
0.15 |
0.20 |
0.20 |
/ |
/ |
0.020 |
| API 5CT N80 | 0.34-0.38 |
0.20-0.35 |
1.45-1.70 |
0.020 |
0.015 |
0.15 |
/ |
/ |
/ |
0.11-0.16 |
0.020 |
| API 5CT L80 | 0.15-0.22 |
1.00 |
0.25-1.00 |
0.020 |
0.010 |
12.0-14.0 |
0.20 |
0.20 |
/ |
/ |
0.020 |
| API 5CT J P110 | 0.26-035 |
0.17-0.37 |
0.40-0.70 |
0.020 |
0.010 |
0.80-1.10 |
0.20 |
0.20 |
0.15-0.25 |
0.08 |
0.020 |
Ihe eji arụ ọrụ
|
Ọkwa ígwè |
Ike Mpụta (Mpa) |
Ike tensile (Mpa) |
|
API 5CT J55 |
379-552 |
≥517 |
|
API 5CT K55 |
≥655 |
≥517 |
|
API 5CT N80 |
552-758 |
≥689 |
|
API 5CT L80 |
552-655 |
≥655 |
|
API 5CT P110 |
758-965 |
≥862 |