Chifukwa chiyani tifunika kugwiritsa ntchito casing centralizer?

Kugwiritsira ntchito casing centralizer ndi njira yofunikira kuti muwongolere bwino simenti.

Cholinga cha simenti ndi pawiri: choyamba, kusindikiza zigawo za zitsime zomwe zimakonda kugwa, kutayikira, kapena zovuta zina ndi casing, kuti apereke chitsimikizo cha kupitiliza kubowola kotetezeka komanso kosalala.Chachiwiri ndikutseka bwino mapangidwe osiyanasiyana amafuta ndi gasi, kuti mafuta ndi gasi zisathawe pansi kapena kuthawa pakati pa mapangidwe, ndikupereka njira yopangira mafuta ndi gasi.

Malingana ndi cholinga cha simenti, njira zowunikira ubwino wa simenti zikhoza kutengedwa.Zomwe zimatchedwa kuti simenti yabwino kwambiri zimatanthawuza kuti choyikapo chimakhala pakati pa borehole ndipo mphete ya simenti yozungulira thumbayo imalekanitsa bwino chigobacho kuchokera ku khoma lachitsime ndi mapangidwe kuchokera ku mapangidwe.Komabe, chitsime chobowoledwacho sichimayima, ndipo chopendekera bwino chimapangidwa mosiyanasiyana.Chifukwa cha kukhalapo kwa kupendekeka kwabwino, chosungiracho sichidzakhazikika mwachilengedwe mu borehole, zomwe zimapangitsa kuti pakhale zochitika zautali wosiyanasiyana ndi magawo osiyanasiyana amamatira ku khoma lachitsime.Mapangidwe casing ndi bwino khoma kusiyana pakati pa kukula kwa osiyana, pamene simenti phala kudutsa kusiyana ndi lalikulu, matope oyambirira n'zosavuta m'malo matope;M'malo mwake, kusiyana ndi yaing'ono, chifukwa madzi otaya kukana ndi lalikulu, simenti phala n'zovuta m'malo matope oyambirira, mapangidwe ambiri odziwika slurry slurry trenching chodabwitsa.Pambuyo mapangidwe trenching chodabwitsa, si bwino kusindikiza mafuta ndi mpweya wosanjikiza, mafuta ndi mpweya kuyenda mbali popanda simenti mphete.

Kugwiritsiridwa ntchito kwa casing centralizeris kuti casing ikhale yokhazikika momwe mungathere panthawi ya simenti.Kwa zitsime zolowera kapena zitsime zokhala ndi zozama zazikulu, ndikofunikira kugwiritsa ntchito casing centralizer.Kuphatikiza pa kuteteza bwino slurry ya simenti kuti isatuluke mu poyambira, kugwiritsa ntchito chowongolera casing kumachepetsanso chiwopsezo chokhala ndi chiwopsezo chosiyanitsidwa.Chifukwa choyikapo chokhazikika, choyikapo sichikhala pafupi ndi khoma lachitsime, ndipo ngakhale m'chigawo chachitsime chokhala ndi mpweya wabwino, chosungiracho sichidzagwedezeka mosavuta ndi keke yamatope yomwe imapangidwa ndi kukakamiza kosiyana, komwe kungayambitse kubowola. .The casing centralizer imathanso kuchepetsa kuchuluka kwa kupindika pachitsime (makamaka pachitsime chachikulu), zomwe zingachepetse kuwonongeka kwa zida zobowola kapena zida zina zapabowo pobowola pobowola pambuyo potsitsa, ndi kutenga nawo mbali poteteza bwalo.Chifukwa cha centralizer ya casing ndi casing centralizer chipangizo, malo okhudzana pakati pa casing ndi khoma la chitsime amachepetsedwa, zomwe zimachepetsa mkangano pakati pa casing ndi khoma la chitsime, ndipo zimathandiza kutsitsa kwa casing mu chitsime. , ndipo imathandizira kusuntha kwa casing pomanga chitsime.

Mwachidule, kugwiritsa ntchito casing centralizer ndi njira yosavuta, yosavuta komanso yofunika kupititsa patsogolo simenti.