(1) JNHG yog cov kws tshaj lij nres tsheb pwm Hoobkas,
(2) Rau qhov ntev nrog qhov tob ntawm ntau tshaj 200mm, qhov tob qhov drilling yog yuav tsum tau
(3) Qhov ntev drilling qhov tob yog 2000mm
(4) Phom laum me ntsis, nruj me ntsis lav qhov tseeb drilling
(5) Muaj feem xyuam rau cov pwm hauv qab no:
Nres hauv ob sab phlu pwm kom muaj nuj nqis, nres hauv ob sab phlu pwm lub neej expectancy, nres pwm xeem, nres pwm tswj, nres khau pwm txiav txim daim ntawv, nres hauv ob sab phlu qhia, nres hauv ob sab phlu pwm sib tsoo tshuab, txhuam cov khoom pwm ntawm drywall, nres khau pwm cov khoom siv caij nplooj ntoos hlav muaj koob muaj npe enfield ,