Dab tsi yog qhov ntau tshaj plaws laum yeeb nkab loj?
Qhov feem ntau sab nraud txoj kab uas hla rau cov kav dej tsis tu ncua yog nyob ntawm kwv yees li2 3/8 nti rau 6 5/8 nti. Drilling kav feem ntau yog tsim nyob rau hauv tus qauv ntev, nrog rau cov kev xaiv feem ntau yog 30 ko taw (9 meters) thiab 45 ko taw (14 meters).
Dab tsi yog laum yeeb nkab siv rau?
Cov yeeb nkab laum yog cov yeeb nkab hollow steel uas tau siv los txuas rau saum npoo ntawm cov khoom siv drilling rau hauv qab qhov sib dhos thiab me ntsis. Nws lub hom phiaj yog ob qho tib si: laum yeeb nkab ob lub twj tso kua mis drilling dej mus rau qhov me ntsis, thiab nws kuj tso cai rau lub hauv qab qhov sib dhos thiab me ntsis kom tsa, txo qis thiab tig.
Ntev npaum li cas laum yeeb nkab?
Dab tsi yog qhov tho yeeb nkab siab?
Drill yeeb nkab siab yog txhais raws lilub siab nyob rau hauv lub laum yeeb nkab thaum nws kaw nyob rau hauv, suav nrog kev tsim siab, av nkos qhov hnyav, thiab qhov tseeb ntsug qhov tob, thiab yog sawv cev los ntawm cov qauv SIDPP=PF − MW 0.052 TVDT D.
Ntev npaum li cas yog qhov sib koom ua ke ntawm cov yeeb nkab laum?
Thaum muaj cov qauv ntev sib txawv, feem ntau drillpipe sib koom ua ke ntev yog nyob ib puag ncig30 ft [9 m]. Rau casing, qhov ntev tshaj plaws ntawm kev sib koom ua ke yog 40 ft [12 m].
