Ua ntej khiav mus rau hauv downhole, lub max. installation loj ntawm cov hniav yuav tsum loj dua lub puab kab uas hla, tom qab khiav mus rau hauv downhole, cov hniav yog nias kom nias lub caij nplooj ntoos hlav, theradial forceis muab los ntawm lub caij nplooj ntoos hlav. Thaum cov ntaub ntawv nyuaj yuav tsum tau muab pov tseg, khawb rau ob peb zaug yuav tsum tau ua ua ntej scrapped mus rau hauv txoj kab uas hla. Lub scraper txuas nrog rau qhov qis kawg ntawm txoj hlua laum, qhov txav ntawm txoj hlua laum nce thiab nqis ua rau axially pub rau hauv lub scrappingoperation.
Nws tau pom nyob rau hauv cov qauv uas txhua tus kauv hniav muaj ob sab hauv thiab sab nraud nkhaus seem-ping npoo. Thaum cov hniav ua hauj lwm rau reciprocating scrapping, sab hauv ntug thiab sab nraud ntug yog ua hauj lwm nyob rau hauv lem, thiab muaj ib tug wider transverse ntug band ntawm ob tug scrapping npoo sawv ib tug txiav thiab milling txiav txim rau qhov chaw txiav.
Lub pluaj cov hniav yog sib npaug ntawm cov scraper kom cov av nkos rov qab tuaj yeem nqa cov khoom siv pov tseg.
Thaum ordering thov qhia:
Casing Scraper Model;
Kev sib txuas, yog tias tsis tsim nyog;
Casing loj thiab hnyav.