ODEX txoj kev ntawm drilling yog dab tsi?
ODEX (Overburden Drilling System) txoj kev yog cov txheej txheem tshwj xeeb drilling siv feem ntau hauv kev tsim cov dej hauv qhov dej, qhov dej kub hauv ntiaj teb, thiab lwm yam kev siv uas drilling los ntawm overburden formations (xws li av, gravel, los yog weathered pob zeb) yog tsim nyog. ODEX txoj kev yog tsim tshwj xeeb los kov yeej cov kev cov nyom uas tshwm sim los ntawm cov khoom siv tsis ruaj khov lossis tsis sib koom ua ke.
Nov yog li cas ODEX drilling txoj kev ua haujlwm:
Drill Bit Design: Lub ODEX system muaj ib tug tshwj xeeb xyaum me ntsis tsim uas muaj xws li ib tug eccentric txheej casing nrog eccentric tis los yog cutters. Qhov no eccentric casing nyob ib ncig ntawm lub hauv paus xyaum hlua, tso cai rau ib txhij drilling thiab casing ntawm lub borehole.
Casing Advancement: Thaum lub sij hawm drilling, eccentric casing thiab tis ntawm ODEX ntsis tig thiab txiav rau hauv cov khoom overburden. Raws li kev nce qib me ntsis, lub casing ua raws li tom qab, muab kev txhawb nqa tam sim ntawd thiab ruaj khov rau cov phab ntsa borehole.
Kev tshem tawm Cuttings: Cuttings ua thaum lub sij hawm drilling yog ntws tawm ntawm lub borehole los ntawm lub annular qhov chaw ntawm lub eccentric casing thiab lub borehole phab ntsa. Qhov kev ua dej ntws tsis tu ncua no yuav pab kom muaj kev ruaj ntseg hauv qhov borehole thiab tiv thaiv cov khoom khib nyiab.
Installation ntawm casing: Raws li ODEX me ntsis xyaum qhov tob rau hauv qhov tsim, lub casing yog ib txhij nce mus rau hauv lub borehole. Lub casing no ua haujlwm los tiv thaiv qhov tsua-ins, vau, thiab lwm yam teeb meem cuam tshuam nrog cov ntaub ntawv tsis ruaj khov overburden.
Drilling efficiency: Txoj kev ODEX paub txog nws qhov ua tau zoo hauv kev drilling los ntawm overburden formations, tso cai rau kev nce qib sai thiab txo qis qis dua piv rau cov txheej txheem drilling. Tsis tas li ntawd, lub peev xwm los ua ib qho kev xyaum tho thiab rooj plaub ntawm qhov borehole streamlines cov txheej txheem kev tsim kho thiab txo qis qhov xav tau ntxiv cov casing lossis kev ntsuas kev txhawb nqa.
