Nruab nrab thiab qis cua siab DTH khoom
Qhov zoo ntawmHFDdhia dej drilling
Lub laum me ntsis yog ua los ntawm cov khoom siv alloy, uas muaj lub neej ntev kev pab cuam thiab siab dua li cov khoom zoo sib xws, thiab lub laum me ntsis crushes lub pob zeb los ntawm kev cuam tshuam thiab shear. HFD laum khoom muaj zog hnav tsis kam thiab haum rau drilling hauv cov mos mos thiab tawv (9-qib drillability ntawm pob zeb, tawv pob zeb drilling), piv nrog ib txwm me ntsis, tshwj xeeb tshaj yog rau drilling 6-8 qib pob zeb cov nyhuv yog qhov tseem ceeb.
