PDC Bit yog dab tsi?

Yog tias koj nyob hauv kev lag luam roj thiab roj, tej zaum koj yuav paub txog lub sij hawm "PDC laum me ntsis." Tab sis rau cov neeg tshiabPDC laum khoom , nkag siab tias PDC laum me ntsis yog dab tsi thiab nws qhov tseem ceeb hauv kev ua haujlwm drilling tuaj yeem ua rau me ntsis ruam. Nyob rau hauv no blog ncej, peb yuav demystify lubPDC me ntsisthiab piav qhia txhua yam koj xav paub txog qhov tseem ceeb nodrilling cuab yeej.

Ua ntej, PDC sawv cev rau Polycrystalline Pob Zeb Diamond Compact. PDC laum khoom yog ib hom kev xyaum me ntsis dav siv hauv kev lag luam roj thiab roj rau kev xyaum los ntawm ntau hom pob zeb tsim. Tsis zoo li cov tsoos roller cone laum cov khoom siv cov hniav hlau txhawm rau txhawm rau pob zeb,PDC laum khoom muaj hluavtaws pob zeb diamond cutters embedded nyob rau hauv lub taub hau. Cov pob zeb diamond cutters no nyuaj heev thiab tuaj yeem ua haujlwm zoo los ntawm cov txheej txheem nyuaj, ua PDC laum khoom ib qho ntawm thawj qhov kev xaiv rau kev ua haujlwm drilling.

Ib qho txiaj ntsig tseem ceeb ntawm PDC laum cov khoom yog lawv cov kav ntev. Covpob zeb diamond txiav cov cuab yeej ntawm lub taub hau laum tuaj yeem tiv taus qhov kub thiab txias thiab abrasive tej yam kev mob, tso cai rau lawv kom muaj peev xwm txiav lub sijhawm. Qhov no txhais tau hais tias PDC cov cuab yeej laum sai dua thiab siv sijhawm ntev dua li cov menyuam lub khob hliav qab, thaum kawg txuag cov nqi ua haujlwm drilling.

Ntxiv nrog rau kev ua haujlwm ntev, PDC laum cov khoom kuj tseem txhim kho kev ua haujlwm drilling. Kev tsim ntawm PDC laum me ntsis tso cai rau kev hloov pauv ncaj qha ntawm lub zog los ntawm qhov drilling rig mus rau lub laum me ntsis, ua rau kom nrawm dua, ua haujlwm zoo dua drilling. Qhov no yog tshwj xeeb tshaj yog pab tau thaum drilling los ntawm cov pob zeb nyuaj formations, qhov twg nws yuav nyuaj rau cov pa laum khoom kom ua tau zoo.

Lwm qhov tseem ceeb ntawm PDC laum cov khoom yog lawv lub peev xwm los muab cov nqi nkag siab dua (ROP). Ntse pob zeb diamond cutters ntawm lub taub hau laum ua kom nrawm nrawm dua, tso cai rau cov neeg ua haujlwm ua tiav cov haujlwm drilling hauv lub sijhawm tsawg. Tsis tsuas yog qhov no pab txo cov nqi khiav lag luam, nws tseem txo qis hnav thiab tsim kua muag ntawm cov khoom siv drilling, thaum kawg txuas lub neej ntawm cov rig thiab cov khoom sib txuas.

Nws yog ib qho tseem ceeb kom nco ntsoov tias thaum PDC laum khoom muaj ntau qhov zoo, lawv tsis muaj kev txwv. PDC laum cov khoom tuaj yeem muaj qhov nyuaj rau drilling los ntawm qee qhov tsim, xws li abrasive sandstone lossis cov ntsiab lus siab chert. Nyob rau hauv cov ntaub ntawv no, lwm yam laum khoom yuav tsum tau txiav txim siab los xyuas kom meej ib tug npaum thiab ua tau zoo drilling lag luam.

Hauv cov ntsiab lus, PDC laum cov khoom yog cov cuab yeej tseem ceeb rau kev lag luam roj thiab roj, muab cov kav ntev, ua haujlwm tau zoo thiab txhim kho kev ua haujlwm drilling. Los ntawm kev nkag siab txog lub peev xwm thiab kev txwv ntawm PDC laum cov khoom, cov neeg ua haujlwm tuaj yeem txiav txim siab paub thaum xaiv cov cuab yeej drilling tsim nyog rau lawv txoj haujlwm. Raws li kev siv thev naus laus zis txuas ntxiv mus, peb cia siab tias qhov tsim thiab kev ua tau zoo ntawm PDC laum cov khoom yuav raug txhim kho ntxiv, ntxiv dag zog rau lawv lub luag haujlwm hauv cov txheej txheem drilling.