DIMENSIONS thiab qhov ntau thiab tsawg ntawm API 5CT CASING thiab Tubing
- Specification & Loj ntawm API 5CT Tubing
| DN | O. D. | Qhov hnyav | W. T. | Kev ua tiav | |||||||||
| Tsis yog- chim siab coupling- xov | chim siab coupling - xov | Qib Steel | |||||||||||
| hauv | mm | lb./ft. | lb./ft. | hauv | mm | H40 | J55 | L80 | N80 | C90 | T95 | P110 | |
| 2 3/8 | 2.38 | 60.3 | 4 | – | 0.167 | 4.24 | PU | PN | PN | PN | PN | PN | – |
| 4.6 | 4.7 | 0.19 | 4.83 | PNU | PNU | PNU | PNU | PNU | PNU | PNU | |||
| 5.8 | 5.95 | 0.254 | 6.45 | – | – | PNU | PNU | PNU | PNU | PNU | |||
| 6.6 | – | 0.295 | 7.49 | – | – | P | – | P | P | – | |||
| 7.35 | 7.45 | 0.336 | 8.53 | – | – | PU | – | PU | PU | – | |||
| 2 7/8 | 2.88 | 73 | 6.4 | 6.5 | 0.217 | 5.51 | PNU | PNU | – | – | – | – | – |
| 7.8 | 7.9 | 0.276 | 7.01 | – | – | – | – | – | – | – | |||
| 8.6 | 8.7 | 0.308 | 7.82 | – | – | PLB | PLB | PLAB | – | PLB | |||
| 9.35 | 9.45 | 0.34 | 8.64 | – | – | PLB | PLB | PLAB | – | PLB | |||
| 10.5 | – | 0.392 | 9.96 | – | – | PLB | PLB | PLB | – | PLB | |||
| 11.5 | – | 0.44 | 11.18 | – | – | – | – | PLB | – | ||||
| 3 1/2 | 3.5 | 88.9 | 7.7 | – | 0.216 | 5.49 | PN | PN | PN | PN | PN | PN | – |
| 9.2 | 9.3 | 0.254 | 6.45 | PNU | PNU | PNU | PNU | PNU | PNU | PNU | |||
| 10.2 | – | 0.289 | 7.34 | PN | PN | PN | PN | PN | PN | – | |||
| 12.7 | 12.95 | 0.375 | 9.52 | – | – | PNU | PNU | PNU | PNU | PNU | |||
| 14.3 | – | 0.43 | 10.92 | – | – | P | – | P | P | – | |||
| 15.5 | – | 0.476 | 12.09 | – | – | P | – | P | P | – | |||
| 17 | – | 0.53 | 13.46 | – | – | P | – | P | P | – | |||
| 4 | 4 | 102 | 9.5 | – | 0.226 | 5.74 | PN | PN | PN | PN | PN | PN | – |
| – | 11 | 0.262 | 6.65 | PU | PU | PU | PU | PU | PU | – | |||
| 13.2 | – | 0.33 | 8.38 | – | – | P | – | P | P | – | |||
| 16.1 | – | 0.415 | 10.54 | – | – | P | – | P | P | – | |||
| 18.9 | – | 0.5 | 12.7 | – | – | P | – | P | P | – | |||
| 22.2 | – | 0.61 | 15.49 | – | – | P | – | P | P | – | |||
| 4 1/2 | 4.5 | 114 | 12.6 | 12.75 | 0.271 | 6.88 | PNU | PNU | PNU | PNU | PNU | PNU | – |
| 15.2 | – | 0.337 | 8.56 | – | – | P | – | P | P | – | |||
| 17 | – | 0.38 | 9.65 | – | – | P | – | P | P | – | |||
| 18.9 | – | 0.43 | 10.92 | – | – | P | – | P | P | PLB | |||
| 21.5 | – | 0.5 | 12.7 | – | – | P | – | P | P | PLB | |||
| 23.7 | – | 0.56 | 14.22 | – | – | P | – | P | P | PLB | |||
| 26.1 | – | 0.63 | 16 | – | – | P | – | P | P | PLB | |||
| P--Plain;N-- Tsis-upset coupling-xov; U-- chim siab coupling-xov; L-Integral | |||||||||||||
- Specification & Loj ntawm API 5CT Casing
| DN | O. D. | Qhov hnyav | W. T. | Xaus Machining Form | ||||||||
| Qib Steel | ||||||||||||
| hauv | mm | lb/ft | kg/m | hauv | mm | H40 | J55 | L80 | N80 | C90 | P110 | |
| K55 | T95 | |||||||||||
| 4 1/2 | 4.500 | 114.3 | 9.5 | 14.14 | 0.205 | 5.21 | PS | PS | – | – | – | – |
| 10.5 | 15.63 | 0.224 | 5.69 | – | PSB | – | – | – | – | |||
| 11.6 | 17.26 | 0.250 | 6.35 | – | PSLB | PLB | PLB | PLB | PLB | |||
| 13.5 | 20.09 | 0.290 | 7.37 | – | – | PLB | PLB | PLB | PLB | |||
| 15.1 | 22.47 | 0.337 | 9.56 | – | – | – | – | – | PLB | |||
| 5 | 5.000 | 127 | 11.5 | 17.11 | 0.220 | 5.59 | – | PS | – | – | – | – |
| 13 | 19.35 | 0.253 | 6.43 | – | PSLB | – | – | – | – | |||
| 15 | 22.32 | 0.296 | 7.52 | – | PSLB | PLB | PLB | PLAB | PLB | |||
| 18 | 26.79 | 0.362 | 9.19 | – | – | PLB | PLB | PLAB | PLB | |||
| 21.4 | 31.85 | 0.437 | 11.1 | – | – | PLB | PLB | PLB | PLB | |||
| 23.2 | 34.53 | 0.478 | 12.14 | – | – | – | – | PLB | – | |||
| 24.1 | 35.86 | 0.500 | 12.7 | – | – | – | – | PLB | – | |||
| 5 1/2 | 5.500 | 139.7 | 14 | 20.83 | 0.244 | 6.2 | PS | PS | – | – | – | – |
| 15.5 | 23.07 | 0.275 | 6.98 | – | PSLB | – | – | – | – | |||
| 17 | 25.3 | 0.304 | 7.72 | – | PSLB | PLB | PLB | PLAB | PLB | |||
| 20 | 29.76 | 0.361 | 9.17 | – | – | PLB | PLB | PLAB | PLB | |||
| 23 | 34.23 | 0.415 | 10.54 | – | – | PLB | PLB | PLAB | PLB | |||
| 26.8 | 39.88 | 0.500 | 12.7 | – | – | – | – | – | – | |||
| 29.7 | 44.2 | 0.562 | 14.27 | – | – | – | – | – | – | |||
| 32.6 | 48.51 | 0.625 | 15.88 | – | – | – | – | – | – | |||
| 35.3 | 52.53 | 0.687 | 17.45 | – | – | – | – | – | – | |||
| 38 | 56.55 | 0.750 | 19.05 | – | – | – | – | – | – | |||
| 40.5 | 60.27 | 0.812 | 20.62 | – | – | – | – | – | – | |||
| 43.1 | 64.14 | 0.875 | 22.22 | – | – | – | – | – | – | |||
| 6 5/8 | 6.625 | 168.28 | 20 | 29.76 | 0.288 | 7.32 | PS | PSLB | – | – | – | – |
| 24 | 35.72 | 0.352 | 8.94 | – | PSLB | PLB | PLB | PLAB | PLB | |||
| 28 | 41.67 | 0.417 | 10.59 | – | – | PLB | PLB | PLAB | PLB | |||
| 32 | 47.62 | 0.475 | 12.06 | – | – | PLB | PLB | PLAB | PLB | |||
| 7 | 7.000 | 177.8 | 17 | 25.3 | 0.231 | 5.87 | PS | – | – | – | – | – |
| 20 | 29.76 | 0.272 | 6.91 | PS | PS | – | – | – | – | |||
| 23 | 34.23 | 0.317 | 8.05 | – | PSLB | PLB | PLB | PLAB | – | |||
| 26 | 38.69 | 0.362 | 9.19 | – | PSLB | PLB | PLB | PLAB | PLB | |||
| 29 | 43.16 | 0.408 | 10.36 | – | – | PLB | PLB | PLAB | PLB | |||
| 32 | 47.62 | 0.453 | 11.51 | – | – | PLB | PLB | PLAB | PLB | |||
| 35 | 52.09 | 0.498 | 12.65 | – | – | PLB | PLB | PLAB | PLB | |||
| 38 | 56.55 | 0.540 | 13.72 | – | – | PLB | PLB | PLAB | PLB | |||
| 42.7 | 63.54 | 0.625 | 15.88 | – | – | – | – | – | – | |||
| 46.4 | 69.05 | 0.687 | 17.45 | – | – | – | – | – | – | |||
| 50.1 | 74.56 | 0.750 | 19.05 | – | – | – | – | – | – | |||
| 53.6 | 79.77 | 0.812 | 20.62 | – | – | – | – | – | – | |||
| 57.1 | 84.97 | 0.875 | 22.22 | – | – | – | – | – | – | |||
| 7 5/8 | 7.625 | 193.68 | 24 | 35.72 | 0.300 | 7.62 | PS | – | – | – | – | – |
| 26.4 | 39.29 | 0.328 | 8.33 | – | PSLB | PLB | PLB | PLAB | PLB | |||
| 29.7 | 44.2 | 0.375 | 9.52 | – | – | PLB | PLB | PLAB | PLB | |||
| 33.7 | 50.15 | 0.430 | 10.92 | – | – | PLB | PLB | PLAB | PLB | |||
| 39 | 58.05 | 0.500 | 12.7 | – | – | PLB | PLB | PLAB | PLB | |||
| 42.8 | 63.69 | 0.562 | 14.27 | – | – | PLB | PLB | PLB | PLB | |||
| 45.3 | 67.41 | 0.595 | 15.11 | – | – | PLB | PLB | PLB | PLB | |||
| 47.1 | 70.09 | 0.625 | 15.88 | – | – | PLB | PLB | PLB | PLB | |||
| 51.2 | 76.19 | 0.687 | 17.45 | – | – | – | – | – | – | |||
| 55.3 | 80.3 | 0.750 | 19.05 | – | – | – | – | – | – | |||
| 8 5/8 | 8.625 | 219.08 | 24 | 35.72 | 0.264 | 6.71 | – | PS | – | – | – | – |
| 28 | 41.62 | 0.304 | 7.72 | PS | – | – | – | – | – | |||
| 32 | 47.62 | 0.352 | 8.94 | PS | PSLB | – | – | – | – | |||
| 36 | 53.57 | 0.400 | 10.16 | – | PSLB | PLB | PLB | PLAB | PLB | |||
| 40 | 59.53 | 0.450 | 11.43 | – | – | PLB | PLB | PLAB | PLB | |||
| 44 | 65.48 | 0.500 | 12.7 | – | – | PLB | PLB | PLAB | PLB | |||
| 49 | 72.92 | 0.557 | 14.15 | – | – | PLB | PLB | PLAB | PLB | |||
| 9 5/8 | 9.625 | 244.48 | 32.3 | 48.07 | 0.312 | 7.92 | PS | – | – | – | – | – |
| 36 | 53.57 | 0.352 | 8.94 | PS | PSLB | – | – | – | – | |||
| 40 | 59.53 | 0.395 | 10.03 | – | PSLB | PLB | PLB | PLAB | – | |||
| 43.5 | 64.73 | 0.435 | 11.05 | – | – | PLB | PLB | PLAB | PLB | |||
| 47 | 69.94 | 0.472 | 11.99 | – | – | PLB | PLB | PLAB | PLB | |||
| 53.5 | 79.62 | 0.545 | 13.84 | – | – | PLB | PLB | PLAB | PLB | |||
| 58.4 | 86.91 | 0.595 | 15.11 | – | – | PLB | PLB | PLB | PLB | |||
| 59.4 | 88.4 | 0.609 | 15.47 | – | – | – | – | – | – | |||
| 64.9 | 96.58 | 0.672 | 17.07 | – | – | – | – | – | – | |||
| 70.3 | 104.62 | 0.734 | 18.64 | – | – | – | – | – | – | |||
| 75.6 | 112.5 | 0.797 | 20.24 | – | – | – | – | – | – | |||
| 10 3/4 | 10.750 | 273.05 | 32.75 | 48.74 | 0.279 | 7.09 | PS | – | – | – | – | – |
| 40.5 | 60.27 | 0.350 | 8.89 | PS | PSB | – | – | – | – | |||
| 15.5 | 67.71 | 0.400 | 10.16 | – | PSB | – | – | – | – | |||
| 51 | 75.9 | 0.450 | 11.43 | – | PSB | PSB | PSB | PSBE | PSB | |||
| 55.5 | 82.59 | 0.495 | 12.57 | – | – | PSB | PSB | PSBE | PSB | |||
| 60.7 | 90.33 | 0.545 | 13.84 | – | – | – | – | PSBE | PSB | |||
| 65.7 | 97.77 | 0.595 | 15.11 | – | – | – | – | PSB | PSB | |||
| 73.2 | 108.93 | 0.672 | 17.07 | – | – | – | – | – | – | |||
| 79.2 | 117.86 | 0.734 | 18.64 | – | – | – | – | – | – | |||
| 85.3 | 126.94 | 0.797 | 20.24 | – | – | – | – | – | – | |||
| 11 3/4 | 11.750 | 42 | 62.5 | 0.333 | 8.46 | PS | – | – | – | – | – | |
| 47 | 69.94 | 0.375 | 20.24 | – | – | – | – | – | – | |||
| 54 | 80.36 | 0.435 | 8.46 | – | – | – | – | – | – | |||
| 60 | 89.29 | 0.489 | 9.53 | – | – | – | – | – | – | |||
| 65 | 96.73 | 0.534 | 11.05 | – | – | – | – | – | – | |||
| 71 | 105.66 | 0.582 | 14.42 | – | – | – | – | – | – | |||
| 13 3/8 | 13.375 | 339.73 | 48 | 71.43 | 0.330 | 8.38 | PS | – | – | – | – | – |
| 54.5 | 81.1 | 0.380 | 9.65 | – | PSB | – | – | – | – | |||
| 61 | 90.78 | 0.430 | 10.92 | – | PSB | – | – | – | – | |||
| 68 | 101.19 | 0.480 | 12.19 | – | PSB | PSB | PSB | PSB | PSB | |||
| 72 | 107.15 | 0.514 | 13.06 | – | – | PSB | PSB | PSB | PSB | |||
| 16 | 16.000 | 406.4 | 65 | 96.73 | 0.375 | 9.53 | PS | – | – | – | – | – |
| 75 | 111.61 | 0.438 | 11.13 | – | PSB | – | – | – | – | |||
| 84 | 125.01 | 0.495 | 12.57 | – | PSB | – | – | – | – | |||
| 109 | 162.21 | 0.656 | 16.66 | – | P | P | P | – | P | |||
| 18 5/8 | 18.625 | 473.08 | 87.5 | 130.21 | 0.435 | 11.05 | PS | PSB | – | – | – | – |
| 20 | 20.000 | 508 | 94 | 139.89 | 0.438 | 11.13 | PSL | PSLB | – | – | – | – |
| 106.5 | 158.49 | 0.500 | 12.7 | – | PSLB | – | – | – | – | |||
| 133 | 197.93 | 0.635 | 16.13 | – | PSLB | – | – | – | – | |||
| P--Plain; S--Short-xov; L--Long-xov; B--Buttress xov; E--xov xwm heev | ||||||||||||
CHEMICAL COMPOSITION (%) ntawm API 5CT
Mechanical Properties ntawm API 5CT
API 5CT DIMENSIONAL DEVIATION
| Cov khoom | Tso cai Deviation | |
| Tawm Dia | D Tsawg dua lossis sib npaug li 101.60mm | ± 0.79 hli |
| D Ntau dua lossis sib npaug rau 114.30mm | + 1.0%, -0.5% | |
| Phab ntsa Thickness | -12.50% | |
| Mass (ib leeg ntev) | +6.5%, -3.5% | |
length range ntawm API 5CT
| Ntev | |||
| Yam khoom | Scope 1 | Scope 2 | Scope 3 |
| Tubing | 6.10-7.32m | 8.53-9.75m | – |
| Casing | 4.88-7.62m | 7.62-10.36m | 10.36-14.63m |
Kuaj thiab tshuaj xyuas ntawm API 5CT Tubing thiab CASING
- Hydrostatic Test
Kev ntsuam xyuas hydrostatic yog qhov tseem ceeb ntawm kev tswj xyuas zoo thaum lub sij hawm tsim cov yeeb nkab steel. Lub hom phiaj ntawm kev ntsuas hydrostatic yog los xyuas kom meej tias cov seam welds thiab cov yeeb nkab lub cev tuaj yeem tiv taus qhov xav tau ntawm cov dej hauv lub siab yam tsis muaj dej. Txhawm rau ua qhov kev sim, dej yog pressurized thiab txhaj rau hauv cov yeeb nkab. Thaum cov dej siab nce mus txog qib uas tau teev tseg, cov yeeb nkab yuav raug kuaj xyuas kom meej rau cov dej xau. Txhua qhov xau uas pom tau raug kho thiab qhov kev sim hydrostatic rov qab mus txog thaum cov yeeb nkab dhau los ntawm kev tshuaj xyuas. Cov txheej txheem no ua kom ntseeg tau tias cov khoom tiav tuaj yeem thauj cov dej los yog lwm yam kua dej hauv lub siab yam tsis muaj dej.
- Khoov Test
Thaum lub sij hawm tsim cov API 5CT tubing thiab casing yeeb nkab, kev sim khoov yog ua los xyuas kom meej qhov zoo ntawm cov vuam. Qhov kev sim no suav nrog kev coj tus qauv ntawm cov yeeb nkab steel thiab ua rau nws muaj zog dabtsi yog khoov. Cov txiaj ntsig ntawm qhov kev ntsuam xyuas yog tom qab ntsuas los txiav txim seb puas muaj cov kab nrib pleb hauv qhov vuam. Yog tias tsis pom muaj kab nrib pleb, cov yeeb nkab raug suav tias yog qhov ua tau zoo. Txawm li cas los xij, yog tias pom muaj kab nrib pleb, cov yeeb nkab raug tso tseg thiab yuav tsum tau kho lossis hloov. Kev ntsuas khoov yog ib feem tseem ceeb ntawm cov txheej txheem tsim khoom, vim nws pab kom paub tseeb tias cov khoom kawg yog cov khoom zoo thiab yuav ua tau raws li qhov xav tau.
- Kev xeem Flattening
Kev ntsuam xyuas flattening feem ntau tau ua thaum lub sij hawm tswj kev ntsuas zoo ntawm cov kav hlau, xws li cov uas ua raws li API 5CT specification. Kev ntsuas flattening yog siv los ntsuas cov qauv yeeb nkab tsis kam mus rau longitudinal deformation (piv txwv li kev loj hlob tawg) thiab nws lub peev xwm los tswj nws cov duab hauv kev ntxhov siab. Qhov kev ntsuam xyuas yog ua los ntawm thawj welded lub nplhaib mus rau ib kawg ntawm cov yeeb nkab qauv. Lwm qhov kawg ntawm cov qauv yog muab tso rau hauv ib lub jig, uas compresses tag nrho ntev ntawm cov yeeb nkab raws nws longitudinal axis. Thaum qhov xav tau compression tiav, lub jig raug tso tawm thiab cov qauv raug tshem tawm mus kuaj. Cov kab nrib pleb lossis deformations uas tau tshwm sim thaum lub sij hawm sim yog muab sau cia thiab tshuaj xyuas. Cov txiaj ntsig ntawm kev ntsuas flattening tuaj yeem siv los ntsuas qhov zoo ntawm cov yeeb nkab thiab nws qhov kev tsim nyog rau kev siv ntau yam kev siv.
- CVN Impact Test
Thaum nws los txog rau tubing thiab casing yeeb nkab ntau lawm, qhov kev ntsuam xyuas cuam tshuam yog qhov tseem ceeb ntawm kev ntsuas kev tswj xyuas zoo. Kuj tseem hu ua Charpy test, qhov kev sim no yog siv los ntsuas cov khoom muaj peev xwm tiv taus qhov cuam tshuam. Qhov kev ntsuam xyuas muaj kev tawm tsam ib qho qauv nrog rauj thiab tom qab ntawd ntsuas lub zog uas nqus tau. Cov txiaj ntsig tau muab piv rau tus qauv los txiav txim seb cov khoom puas ua tau raws li qhov yuav tsum tau ua. Muaj peb qhov chaw tseem ceeb uas raug sim thaum kuaj qhov cuam tshuam: cov yeeb nkab lub cev, lub hiav txwv weld, thiab tshav kub- thaj tsam cuam tshuam. Los ntawm kev nkag siab txog qhov tseem ceeb ntawm qhov kev sim no, cov neeg tsim khoom tuaj yeem ua kom lawv cov kav dej steel ua tau raws li cov qauv tsim nyog rau lub zog thiab kav ntev.
API 5CT Yeeb Nkab Xaus Kev Ua Haujlwm
- Flat End / Plain End
Lub tiaj kawg, tseem hu ua lub tiaj kawg lossis square txiav, yog ib hom yeeb nkab steel uas muaj qhov kawg ntawm lub tiaj tiaj es tsis yog beveled lossis threaded kawg. Plain kawg kav yog ntau dua nyob rau hauv txoj kab uas hla loj kav thiab feem ntau yog siv rau nqa cov kua nyob rau hauv lub siab. Ib qho zoo ntawm cov yeeb nkab kawg yog qhov yooj yim dua rau vuam lossis txuas rau lwm hom yeeb nkab. Txawm li cas los xij, cov yeeb nkab kawg uas tsis tshua muaj peev xwm tiv taus sab nraud, xws li cov cua los yog nthwv dej, thiab muaj kev cuam tshuam ntau dua los ntawm kev cuam tshuam. Yog li ntawd, cov yeeb nkab kawg yog feem ntau siv rau hauv cov ntawv thov uas nws yuav raug faus lossis tiv thaiv los ntawm cov khoom.
- Xov xaus
Casing yog cov yeeb nkab steel uas siv los ua kab ntawm qhov borehole ntawm lub qhov dej drilling. Nws yog ib qho tseem ceeb uas yuav tsum tau siv cov casing txhawm rau txhawm rau tiv thaiv qhov tawg ntawm qhov borehole thiab tiv thaiv cov cuab yeej siv. Casing kuj yog siv los tiv thaiv dej, roj, thiab roj kom tsis txhob nkag mus rau hauv qhov dej. Cov threaded kawg ntawm lub casing yeeb nkab yog siv los ua ib qho kev sib txuas nrog cov ntsia hlau. Hom kev sib txuas no yog hu ua threaded joint. Txhawm rau ua qhov kev sib txuas no, siv lub casing coupler. Lub coupler yog ntsia hlau mus rau qhov kawg ntawm cov yeeb nkab thiab tom qab ntawd ob lub yeeb nkab txuas nrog lub hau ntswj.
- Rounded Nose
Lub qhov ntswg sib npaug ntawm cov yeeb nkab casing tsuas yog ib qho kev sib txuas ntawm threaded uas tau raug tshuab kom muaj qhov sib npaug, tsis yog tiaj tus, kawg. Hom kev sib txuas no feem ntau siv thaum qhov chaw txwv, xws li hauv cov ces kaum nruj lossis lwm yam nyuaj - mus rau - mus txog thaj chaw. Tsis tas li ntawd, lub qhov ntswg sib npaug tsis tshua muaj kev cuam tshuam rau cov khoom nyob ib puag ncig, ua rau lawv zoo tagnrho rau siv nyob rau hauv siab - chaw tsheb. Txawm hais tias lawv kim dua li cov kev sib txuas ib txwm muaj, qhov kev nyab xeeb thiab ruaj khov ntawm cov qhov ntswg sib npaug ua rau lawv tsim nyog rau kev nqis peev.
API 5CT OCTG yog dab tsi?
Roj lub teb chaws tubular khoom (OCTG) yog ib tsev neeg ntawm cov yeeb nkab steel khoom siv nyob rau hauv drilling, tiav, thiab zus tau tej cov roj thiab roj qhov. Thiab, API 5CT yog tus qauv rau pawg ntawm cov khoom. OCTG casing thiab tubing yog cov khoom tseem ceeb hauv cov txheej txheem tsim kho, vim lawv muab kev txhawb nqa thiab kev tiv thaiv rau lub qhov dej. Casing yog ntsia ua ntej, ua raws li tubing. Lub casing feem ntau yog ua los ntawm cov hlau los yog lwm yam ntaub ntawv muaj zog uas tuaj yeem tiv taus qhov kub siab thiab kub ntawm lub reservoir. Tubing kuj yog ua los ntawm steel, tab sis nws yog thinner phab ntsa thiab nqa mus rau hauv lub casing. OCTG cov khoom lag luam yog tsim los ua kom tau raws li cov kev qhia tshwj xeeb uas yog raws li hom kev ua kom zoo. Piv txwv li, kev pabcuam qaub yuav tsum muaj peev xwm tiv taus corrosion los ntawm hydrogen sulfide gas. Cov dej hauv qhov dej tob yuav tsum muaj peev xwm tiv taus qhov siab siab pom ntawm qhov tob tob. Thaum kawg, OCTG cov khoom lag luam ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb thiab ua haujlwm ntawm kev ua haujlwm ntawm cov roj thiab roj.
Dab tsi yog qhov txawv ntawm API 5CT CASING thiab Tubing?
API 5CT casing yog ib lub raj uas muab tso rau hauv lub qhov dej txhawm rau tiv thaiv lub qhov dej los ntawm kev sib kis. Casing kuj yog siv los ua kom lub qhov dej ruaj khov thiab ua kom ruaj ntseg. Drilling thiab casing kev khiav hauj lwm tshwm sim ua ke, nrog rau txoj hlua xyaum raug tshem tawm ntawm lub sijhawm ua ntej. API 5CT tubing yog siv los nqa roj av los ntawm qhov tob ntawm qhov dej mus rau qhov chaw. Cov roj thiab roj tej zaum yuav ua rau tus kheej - nce mus rau saum npoo; Txawm li cas los xij, cov twj tso kua mis feem ntau yuav tsum tau txhawm rau txhawm rau nqa cov kua dej mus rau saum npoo. Tubing feem ntau muaj ib txoj kab uas hla me dua li casing. Lub hom phiaj tseem ceeb ntawm tubing yog thauj cov roj av los ntawm qhov dej mus rau qhov chaw sab nraud.
