Kev kub siab thiab siab ceev drilling kua yog ib txwm ib qho teeb meem nyuaj nyob rau hauv drilling kua teb.Txij li thaum kev tsim kho ntawm West II H4-1 nyob rau hauvShengliOilfield, tsis tau muaj kev cuam tshuam loj hauv cov txheej txheemtxwv. Thaum lub qhov dej tob tshaj 7, 000 m thiab qhov kub ntawm qhov dej siab tshaj 180 degree, qhov kub thiab txias siab drilling kuayogntsej muagd nrogxws li cov teeb meem xws li kev hloov pauv loj ntawm kev ua haujlwm, tsis ruaj khov kub tsis kam thiab kev saib xyuas nyuaj.
MECO oxidized asphalt daws qhov teeb meem tseem ceeb ntawm rheology thiab ncua kev ruaj ntseg tswj ntawm drilling kua nyob rau hauv qhov kub thiab txias.siabsiab tej yam kev mob. Piv nrog rau cov pa drilling kua dej, qhov drilling kua system nrog MECO oxidized asphalt muaj peb qhov zoo: ntau ruaj khov rheology, zoo dua ntub dej thiab zoo dua ntsaws thiab kev tiv thaiv kev sib tsoo.
Cov txiaj ntsig tau zoo nyob rau hauv daim ntawv thov ntawm West II H4-1.Qhov tob tob ntawm qhov dej West II H4-1 yog 6941m, qhov siab tshaj plaws ua haujlwm yog 2.34g / cm3.3, qhov kub hauv qab yog 180 degree, thiab cov av nkos tau khaws cia ntawm 40-50s. Qhov drillingdej qhosiv MECO oxidized asphalt muaj kev ua tau zoo thiab ruaj khov borehole phab ntsa tsis muaj teeb meem tshwm sim, uas daws cov teeb meem ntawm cov roj hauv paus txiav kev kho mob hauv shale drilling siv.
Lub tshuab dej drilling nrog MECO oxidized asphalt kov yeej qhov teeb meem ntawm kev sib txhuam loj tsis kamthiab torque ntawm cov pa drilling kua, thiab txo cov kev sib txhuam thiab rotary torque nyob rau hauv tus txheej txheem ntawm tripping thiab ho txhim kho lub drilling ceev.
Nws tseem tuaj yeem daws qhov teeb meem uas cov tsoos drilling kua system tsis tiv taus qhov kub thiab txias.
Nws tau tso lub hauv paus rau qhov ua tau zoo thiab ua tiav ntawm qhov dej no.
Drilling kua tu cov nqi kuj tau txo los ntawm 10 feem pua,uasmuab kev lav zoo rau kev tsim kho qhov tob tob, txuag cov voj voog drilling thiab kev nqis peev drilling.
