API Laum dab tshosyog ib qho tseem ceeb ntawm lub laum txoj hlua nyob rau hauv qab heev, positioned ntawm lub laum yeeb nkab thiab laum ntsis. Nws yog ib qho hnyav -lub luag haujlwm, tuab- phab ntsa, thiab nruj heev steel yeeb nkab uas ua rau qhov hnyav tshaj plaws ntawmHauv qab qhov sib dhos (BHA).
Laum dab tshosqhov ntau thiab tsawg yog standardized los ntawmAPI Spec 7-1specification. Tsis zoo lilaum cev, qhov twg qhov kev sib txuas yog loj dua lub cev yeeb nkab, ib lub dab tshos laum feem ntau yog ib qhoib qholub cuab tam qhov twg sab nraud txoj kab uas hla (OD) yog uniform los ntawm qhov kawg mus rau qhov kawg.
Qhov loj yog feem ntau txhais los ntawm nwsSab nraud Diameter (OD)thiabSab hauv Diameter (ID).
Nrhiav precision AISI 4145H dab tshos?Thov ib daim ntawv ceev ceev rau txhua qhov ntau thiab tsawg API los ntawm 3-1/8 "rau 9-1/2".
API Drill Collar Size & Daim Ntawv Txuas Txuas
| Sab nraud Diameter (OD) | Sab hauv Diameter (ID) | Kwv yees li. Qhov hnyav (lb / ft) | API Standard Connection |
| 3-1/8" | 1-1/4" | 21 | NC23 (2-3/8" REG) |
| 3-1/2" | 1-1/2" | 26 | NC26 (2-3/8" IF) |
| 4-1/8" | 2" | 35 | NC31 (2-7/8" IF) |
| 4-3/4" | 2-1/4" | 47 | NC35/NC38 (3-1/2" IF) |
| 6" | 2-1/4" | 82 | NC44 (4" IF) |
| 6-1/2" | 2-1/4" | 100 | NC46/NC50 (4-1/2" IF) |
| 7" | 2-13/16" | 110 | NC50 (4-1/2" IF) |
| 8" | 2-13/16" | 150 | NC56 |
| 9" | 3" | 192 | NC61 / 7-5/8" REG |
| 9-1/2" | 3" | 216 | NC70 / 8-5/8" REG |
Cov Khoom Siv thiab Cov Khoom Siv Hluav Taws Xob (API Spec 7-1)
| Yam khoom Parameter | Specification / Tus nqi | Lus hais |
| Khoom siv | AISI 4145H Hloov kho | Cr-Mo alloy steel, puv -ntev quenched & tempered |
| Yield zog | Ntau dua lossis sib npaug rau 110,000 psi (758 MPa) | Heev tsis kam mus nro thiab compression |
| Tensile zog | Ntau dua lossis sib npaug rau 140,000 psi (965 MPa) | Xyuas kom tsis txhob tawg nyob rau hauv siab axial loads |
| Hardness | 285 - 341 HB | Brinell hardness xyuas kom hnav tsis kam |
| Charpy V-ntsis cuam tshuam | Ntau dua lossis sib npaug li 40 ft-lbs (54 J) | Toughness yuav tsum tau ntawm 21℃(70℃F) |
| Ntev Ntau | Ntau yam 2 (30 - 32 ft / 9.15 - 9.75 m) | Universal kev lag luam tus qauv ntev |
Drill Collar Lengths
API laum dab tshos feem ntau muaj nyob rau hauv peb qhov ntev, txawm li cas los xijNtau yam 2yog tus qauv kev lag luam universal.
Ntau yam 1:18-22 ko taw (5.5-6.7 m)
Ntau yam 2: 30 - 32 ko taw (9.1 - 9.7 m)- Tus qauv rau yuav luag txhua BHAs.
Ntau yam 3:38-45 ko taw (11.5-13.7 m)
API laum dab tshos Tsim Hom
Thaum qhov luaj li cas (OD) tseem zoo ib yam, laum dab tshos tuaj nyob rau hauv ob lub ntsiab nto tsim:
Slick Drill Collars:Ib tug du, uniform cylindrical nto. Txheem rau feem ntau qhov dej ntsug.
Spiral Drill Collars:Nta helical grooves machined rau hauv OD. Cov no txo qhov chaw sib cuag nrog cov phab ntsa wellbore, tiv thaivDifferential Stickinghauv siab -siab los yog deviated qhov dej.
API Drill collars Functions
Muab Qhov hnyav ntawm me ntsis (WOB):Vim nws qhov hnyav hnyav, nws siv lub ntiajteb txawj nqus los thawb me ntsis rau hauv cov pob zeb tsim.
Khaws Drill Pipe nyob rau hauv Tension:Qhov hnyav ntawm lub dab tshos kom ntseeg tau tias cov yeeb nkab nyias nyias saum toj no tseem nyob rau hauv lub xeev ntawm nruj, tiv thaiv nws los ntawm buckling los yog ua tsis tiav nyob rau hauv compression.
Tswj Verticality:Nws lub siab rigidity tiv thaiv txoj hlua los ntawm kev khoov, ua kom lub qhov dej nyob twj ywm ntsug thiab txo qhov sib txawv.
Kev vibration Dampening:Nws loj loj absorbs vibrations los ntawm kev txiav txim ntawm me ntsis, tiv thaiv lub qaum laum txoj hlua.
API Drill Pipe Hoobkas
API Drill Pipe Test equipments
API Drill Pipe Certificate
FAQ
Dab tsi yog txoj kab uas hla ntawm lub dab tshos tho?
Sab nraud txoj kab uas hla ntawm laum dab tshos feem ntau yog li ntawm 79.4 hli (3-1/8 nyob rau hauv) mus rau 158.8 hli (6-1/4 nyob rau hauv), nrog rau qhov tshwj xeeb qhov ntev xaiv raws li qhov yuav tsum tau drilling thiab tus qauv tsim. Qhov ntau thiab tsawg muaj xws li 88.9 mm (3-1/2 in), 104.8 mm (4-1/8 in), thiab 120.7 mm (4-3/4 in), thiab lwm yam.
Lub phab ntsa ntawm lub dab tshos laum tuab npaum li cas?
Phab ntsa thickness ntawm laum dab tshos feem ntau yog 38 mus rau 53 hli, kwv yees li 4 mus rau 6 npaug ntawm cov kav dej laum, muab qhov hnyav dua thiab nruj kom ua tau raws li qhov yuav tsum tau ua rau drilling siab, ruaj khov, thiab lub zog thaum lub sijhawm drilling.
