Lub tes tsho stabilizer yog ib qho cuab yeej nruab rau ntawm txoj hlua casing los nruab nrab ntawm txoj hlua casing hauv qhov dej. Nws muaj cov yam ntxwv ntawm cov qauv yooj yim, kev siv yooj yim, kev pab lub neej ntev, thiab tus nqi qis. Lub luag haujlwm tseem ceeb ntawm lub tes tsho stabilizer yog:
l Txo cov eccentricity, txhim kho cementing kev hloov pauv tau zoo, tiv thaiv cov cement slurry los ntawm channeling, xyuas kom cementing zoo, thiab ua tiav cov txiaj ntsig zoo.
l Kev txhawb nqa ntawm lub tes tsho stabilizer ntawm lub casing txo qhov kev sib cuag ntawm lub casing thiab phab ntsa zoo, yog li txo cov kev sib txhuam ntawm lub casing thiab cov phab ntsa wellbore, uas yog qhov zoo rau cov casing yuav tsum tau tsiv thaum khiav mus rau hauv lub qhov dej thiab cementing.
l Txo qhov kev pheej hmoo ntawm cov casing sticking nyob rau hauv qis casing thiab txo qhov kev pheej hmoo ntawm casing sticking. Lub tes tsho stabilizer nyob nruab nrab ntawm lub casing thiab tiv thaiv nws los ntawm kev ua nruj nreem rau ntawm phab ntsa zoo. Txawm tias nyob rau hauv qhov chaw zoo nrog zoo permeability, lub casing yog tsis tshua muaj yuav daig los ntawm av nkos ncuav los ntawm lub siab sib txawv thiab ua rau drilling jams.
l Lub tes tsho stabilizer tuaj yeem txo qhov kev khoov ntawm cov casing hauv lub qhov dej, yog li txo qhov hnav ntawm lub casing los ntawm cov cuab yeej drilling lossis lwm yam cuab yeej downhole thaum lub sij hawm drilling txheej txheem tom qab lub casing yog ntsia, thiab ua si lub luag hauj lwm ntawm kev tiv thaiv lub casing.
Muaj ntau ntau yam ntawm lub tes tsho stabilizers, thiab lawv cov kev xaiv thiab kev tso kawm yog feem ntau raws li kev paub thaum lub sij hawm siv ntawm qhov chaw, tsis muaj cov txheej txheem theoretical cov ntsiab lus thiab kev tshawb fawb. Nrog rau kev loj hlob ntawm drilling mus rau cov qhov dej complex xws li cov qhov dej tob tob, cov qhov dej loj loj, thiab cov qhov dej kab rov tav, cov pa roj hmab stabilizers tsis muaj peev xwm ua tau raws li cov kev xav tau ntawm kev tsim kho hauv av. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum ua kom muaj kev soj ntsuam thiab sib piv ntawm cov yam ntxwv ntawm cov qauv, kev siv tau, thiab kev pom zoo tso rau ntawm ntau hom stabilizers los qhia kev ua haujlwm ntawm qhov chaw.
Classification thiab yam ntxwv ntawm casing centralizers
Raws li qhov tseeb ntawm qhov dej thiab cov yam ntxwv ntawm cov qauv, kev tsim khoom, thiab cov khoom siv ntawm lub tes tsho stabilizers, lub tes tsho stabilizers tau muab faib ua ntau hom. Raws li cov qauv ntawm kev lag luam roj av, lub tes tsho stabilizers feem ntau muab faib ua elastic stabilizers thiab rigid stabilizers.
1.1 Kev faib tawm thiab cov yam ntxwv ntawm cov elastic stabilizers
Elastic centralizer yog qhov ntxov tshaj plaws thiab feem ntau siv hom centralizer. Nws muaj cov nqi tsim khoom tsawg, ntau hom, thiab cov yam ntxwv ntawm qhov loj deformation thiab rov qab quab yuam. Nws tsis tsuas yog ua kom lub hauv paus ntawm lub casing, tab sis kuj muaj kev nkag mus zoo rau cov ntu zoo nrog txoj kab uas hla loj hloov, txo cov kev sib txhuam tsis zoo ntawm cov qhov ntxig ntxig, thiab txhim kho qhov sib xws ntawm cement consolidation ntawm lub casing thiab lub qhov dej.
1.2 Kev faib tawm thiab cov yam ntxwv ntawm cov khoom ruaj khov
Tsis zoo li elastic stabilizers, rigid stabilizers lawv tus kheej tsis dhau ib qho elastic deformation, thiab lawv cov kab uas hla sab nraud yog tsim los kom me dua qhov me me ntawm cov laum me ntsis, uas ua rau muaj kev sib txhuam qis qis, ua rau lawv tsim nyog siv rau hauv ntau qhov dej thiab cov casing.
Kev xaiv zoo tshaj plaws ntawm kev sib xyaw ua ke rau 3 casing centralizers thiab tso
Lub tes tsho sib txawv muaj lawv tus kheej qhov zoo thiab qhov tsis zoo vim qhov sib txawv ntawm cov qauv, cov khoom siv, thiab cov txheej txheem tsim khoom, thiab tsim nyog rau cov xwm txheej sib txawv. Tib hom casing centralizer, vim yog txoj kev sib txawv thiab qhov sib txawv, tuaj yeem ua rau muaj qhov sib txawv hauv nruab nrab thiab kev sib txhuam casing. Piv txwv li, yog hais tias lub centralizer yog muab tso rau nruj heev, nws yuav ua rau kom qhov nruj ntawm cov hlua casing, ua rau nws nyuaj rau ntxig lub casing thiab nce nqi khiav hauj lwm; Qhov kev tso kawm tsis txaus ntawm cov stabilizers tuaj yeem ua rau muaj kev sib cuag ntau dhau ntawm lub casing thiab lub qhov dej, ua rau qhov chaw tsis zoo ntawm lub casing thiab cuam tshuam rau qhov zoo ntawm cementing. Yog li ntawd, raws li qhov sib txawv ntawm hom thiab tej yam kev mob, xaiv lub tes tsho stabilizer tsim nyog thiab kev tso kawm ua ke yog ib qho tseem ceeb heev rau txo casing kev sib txhuam thiab txhim kho casing centering.
Post lub sij hawm: Aug-06-2024
