Laum yeeb nkab yog ib qho tseem ceeb ntawm cov hlua tho. Nws yog ua los ntawm seamless steel tubing (nrog rau phab ntsa tuab feem ntau ntawm 9-11 hli). Nws lub luag haujlwm tseem ceeb yog xa cov torque thiab thauj cov dej drilling, thiab txuas ntxiv ua kom tob tob hauv qhov dej los ntawm maj mam lengthening lub laum yeeb nkab. Yog li ntawd, laum yeeb nkab plays lub luag haujlwm tseem ceeb hauv cov roj drilling.
Drilling yeeb nkab yuav tsum muaj peev xwm tiv taus cov kev ntxhov siab sab hauv thiab sab nraud, torsion, khoov, thiab kev co. Thaum lub sij hawm roj thiab roj rho tawm thiab ua kom zoo, cov yeeb nkab laum tuaj yeem rov siv tau ntau zaus. Laum yeeb nkab tau muab faib ua peb pawg: crisscross laum yeeb nkab, laum yeeb nkab, thiab qhov hnyav laum yeeb nkab. Kev sib txuas ua ke yog: crisscross laum yeeb nkab (1 daim) + laum yeeb nkab (n daim, txiav txim siab los ntawm qhov tob) + qhov hnyav laum yeeb nkab (n daim, txiav txim siab los ntawm txoj hlua sib dhos tsim).
Kev ua haujlwm ntawm Drill Pipe
Drilling yeeb nkab plays lub luag haujlwm tseem ceeb hauv drilling engineering. Nws cov haujlwm muaj xws li:
1. Kev xa hluav taws xob
Laum cov yeeb nkab xa hluav taws xob thiab lub zog rau lub laum me ntsis, ua kom nws tho qhov hauv av.
2. Txhawb nqa Drill Bit
Laum yeeb nkab txhawb nqa lub laum me ntsis, ua kom nws ruaj khov thaum lub sijhawm drilling.
3. Tshem tawm cov txiav
Laum cov yeeb nkab tshem tawm cov txiav los ntawm lub qhov taub los ntawm cov kav dej, ua kom lub qhov dej huv.
4. Tau txais cov ntaub ntawv geological
Laum yeeb nkab sau cov ntaub ntawv geological los ntawm kev xyaum me ntsis, pab hauv kev txheeb xyuas cov khoom thiab cov qauv ntawm cov pob zeb hauv av.
5. Ua haujlwm zoo
Cov yeeb nkab laum tuaj yeem siv rau kev ua haujlwm zoo, suav nrog kev tso cov kav dej thiab kho lub qhov dej.
Txhawm rau txhim kho kev sib txuas lub zog ntawm cov yeeb nkab lub cev thiab cov pob qij txha, qhov kawg ntawm cov yeeb nkab lub cev yog thickened. Cov txheej txheem thickening feem ntau suav nrog cov thickening, sab nraud thickening, thiab sab hauv thiab sab nraud thickening. Raws li American Petroleum Institute (API), laum cov kav dej tau muab faib ua peb pawg raws li qhov ntev:
Qeb 1: 5.486–6.706 m (18–22 ft);
Qeb 2: 8.230–9.144 m (27–30 ft);
Qeb 3: 11.582–13.716 m (38–45 ft);
Feem ntau siv laum yeeb nkab loj yog 88.9 mm (3.5 in), 114.3 mm (4.5 in), thiab 127.0 mm (5 in).
Drill Pipe Steel Qib thiab lub zog
Qib steel ntawm lub laum yeeb nkab yog hais txog qib ntawm cov hlau siv nyob rau hauv cov yeeb nkab laum, uas yog txiav txim los ntawm qhov tsawg kawg nkaus yield zog ntawm cov hlau. API qhia tsib qib steel rau laum yeeb nkab: D, E, 95(X), 105(G), thiab 135(S), nrog rau qib X, G, thiab S yog siab - lub zog laum kav. Qhov siab dua cov qib steel ntawm cov yeeb nkab laum, qhov ntau dua qhov muaj zog ntawm cov yeeb nkab, thiab qhov ntau dua qhov muaj zog ntawm cov yeeb nkab laum (lub zog tensile, torsional zog, extrusion resistance, thiab lwm yam). Nyob rau hauv lub zog tsim ntawm txoj hlua laum, nws raug nquahu kom nce qib steel los txhim kho lub zog ntawm txoj hlua laum, es tsis yog nce phab ntsa tuab.
