Cement Retainer Plug In Oil & Gas Well Guide

Inflatable cov cuab yeej siv tau siv hauv kev lag luam roj thiab roj rau ntau tshaj 50 xyoo los ua ntau yam kev kho mob. Inflatablezoo packers,txuas txuas txuas, thiab cement retainer yog siv nyob rau hauv qhib qhov, cased qhov, slotted casing liner, thiab gravel-pob cov ntxaij vab tshaus hauv cov roj thiab roj qhov dej, tab sis lawv yuav tsum tau siv tsuas yog thaum cov cuab yeej siv tsis haum. Cement Retainers feem ntau yog siv rauKev kho cementing ua haujlwm. Cov drillable retainers no tau teeb tsa ruaj ntseg hauv ib qho twghom casing.

Cov cuab yeej inflatable yog tshwj xeeb tshaj yog muaj txiaj ntsig hauv qhov qhib qhov tsis meej. Ib yam li cov khoom ntim khoom ib txwm muaj (xyuas thiabPermanent Packers) thiab txuas txuas txuas, cov cuab yeej siv hluav taws xob tuaj yeem teeb tsa hauv txhua qhov chaw (piv txwv li,retrievable packer, resettable packer, retrievable choj plug, thiab cement retainer), tso cai rau tib yam kev khiav hauj lwm yuav tsum tau ua raws li nrog cov pa pa.

Inflatable cement retainer Kev sib txuas ntawm flapper-valve los ua ke nrog tus choj inflatable mus tas li tsim cov cement retainer. Cement retainers feem ntau yog siv los nyem tawm cov khoom tsis xav tau lossis cov roj av ntawm lub qhov qhib thiab cov casing. Lub hauv qab bull plug raug tshem tawm thiab hloov nrog lub rooj sib tw shear-out pob. Lift sub (Drilling Subs) nyob rau sab saum toj yog hloov nrog lub valve los ua ke.

Ib lub tshuab ua kom cov cement retainer tso cai rau cov cement kom nkag mus rau hauv cov kab. Thaum cov cement nyob rau hauv qhov chaw, lubhydrostatic siabyog relieved los ntawm rub tawm ntawm lub retainer. Thaum tawm ntawm lub retainer, lub valve kaw thiab tsis tso cai ntxiv ntxiv.

Cement Retainer Applications Nyob rau hauv Roj Thiab Gas Wells

Circulating Squeeze

Lub circulating nyem yog feem ntau ua nrog ib tug cement retainer nyob rau hauv nyiam rau ib tug packer. Circulation yog tiav nrog dej los yog acid raws li ib tug preliminary kua. Lub ncua sij hawm yog circulated nrog ib tug ntxuav kua kom huv si zoo, thiab cov cement slurry yog ces pumped thiab tshem tawm.

Tsis muaj kev tsim siab tshwm sim thaum lub sijhawm ua haujlwm, tshwj tsis yog qhov nce ntxiv los ntawm hydrostatic siab ntawm cov cement kem raws li nws ntws mus rau lub annulus. Thaum qhov kev tso kawm tiav lawm, lub stinger lossis packer raug tso tawm. Cov cement ntau dhau los ntawm cov perforations sab saud tuaj yeem thim rov qab yog tias xav tau.

Lub ntim ntawm slurry yuav tsum tau ua kom tiav ib tug circulating nyem yog tsis paub; Yog li ntawd, ntau slurry yog npaj. Yog li ntawd, muaj qhov ua tau zoo uas qee qhov ntawm cov cement slurry tuaj yeem nkag mus rau hauv lub casing,laum cev, los yog tubing los yog lub annulus saum lub tshuab nyem thaum ua haujlwm.

Yog tias cov cement teeb no, lub laum yeeb nkab (los yog tubing) yuav daig hauv lub qhov. Yog li ntawd, txhawm rau txo qhov kev pheej hmoo no, lub cement retainer yuav tsum tau khiav es tsis txhob ntim khoom. Nws yog qhov yooj yim dua los tshem tawm cov stinger los ua ke dua li cov packer, vim tias tom kawg muaj qhov tsawg kawg nkaus tshem tawm. Lub retainer yuav tsum tau teem kom ze li sai tau rau lub sab sauv perforations. Qhov no txo ​​qis qhov cuam tshuam ntawm cov yeeb nkab laum rau cov cement slurry uas tuaj yeem nkag mus rau hauv qhov dej los ntawm cov perforations sab saud.

Cement Squeeze

Cement Retainer kuj tseem siv rau hauvcement nyemhauj lwm. Nws kev siv yog suav tias yog ib qho ntawm cov txheej txheem Squeeze-tool placement. Cov txheej txheem no tuaj yeem muab faib ua ob ntu - cov txheej txheem ntim cov khoom ntim thiab cov txheej txheem drillable cement retainer. Lub hom phiaj tseem ceeb ntawm kev siv cov cuab yeej nyem yog cais tawm lub casing thiab lub taub hau thaum siv lub siab siab downhole.

Cement retainers yog drillable packers uas muaj lub valve uas yog ua los ntawm ib tug stinger ntawm qhov kawg ntawm cov workstring (Fig.1). Cement retainers yog siv los tiv thaiv kev thim rov qab thaum tsis muaj cov cement dehydration los yog thaum muaj qhov sib txawv siab tsis zoo yuav cuam tshuam cov cement ncuav mog qab zib. Hauv qee qhov xwm txheej, kev siv lub hnab ntim khoom muaj kev pheej hmoo vim tias muaj peev xwm sib txuas lus nrog cov perforations sab saud. Thaum cementing ntau thaj chaw, cov cement retainer cais cov qis perforations thiab tom qab zones squeezing tuaj yeem ua tau yam tsis tau tos rau lub slurry.

Ib tug drillable retainer muab tus neeg teb xov tooj muaj kev ntseeg siab nyob rau hauv kev teeb tsa lub packer kom ze rau cov perforations. Lwm qhov zoo dua yog tias qhov ntim me me ntawm cov kua hauv qab lub ntim khoom yog hloov pauv los ntawm cov perforations ua ntej ntawm cov cement slurry.

Pab pawg Vigor yuav tshaj tawm peb cov khoom tshiab WIDE RANGE BRIDGE PLUG nyob rau yav tom ntej, yog tias koj xav paub ntau ntxiv txog nws, thov tsis txhob yig tiv tauj nrog peb kom tau txais cov kev pabcuam tshaj lij thiab kev txhawb nqa khoom.

Yog xav paub ntxiv, koj tuaj yeem sau rau peb lub thawv ntawvinfo@vigorpetroleum.com ib&marketing@vigordrilling.com