Nei tichifanira kushandisa casing centralizer?

Kushandiswa kwecasing centralizer chiyero chakakosha chekuvandudza kunaka kwesimende.

Chinangwa chekuisa simende chakapetwa kaviri: chekutanga, kuvhara mativi etsime angangoita kudonha, kubuda, kana mamwe mamiriro akaomarara ane casing, kuitira kupa vimbiso yekuenderera mberi kwekuchera kwakachengeteka uye kwakatsetseka. Chechipiri ndechekuvhara zvakasiyana-siyana mafuta uye gasi maumbirwo, kuitira kudzivirira mafuta negasi kuti zvisapukunyuke pasi kana kutiza pakati pemaumbirwo, uye nekupa nzira yekugadzirwa kwemafuta negasi.

Zvinoenderana nechinangwa chekuisa simende, maitiro ekuongorora kunaka kwesamende anogona kuwanikwa. Iyo inonzi yakanaka kunaka simende inonyanya kureva kuti casing iri pakati pechibhorani uye mhete yesamende yakatenderedza casing inonyatso kuparadzanisa casing kubva kumadziro etsime uye kuumbwa kubva pakuumbwa. Zvisineyi, chibhorani chaicho chakacherwa hachina kumira mushe, uye tsime rakatsetseka richagadzirwa kune madhigirii akasiyana. Nekuda kwekuvapo kwekunamira zvakanaka, iyo casing haizove yakasarudzika pakati pechibhorani, zvichikonzera chiitiko chehurefu hwakasiyana uye madhigirii akasiyana ekunamatira kumadziro etsime. Kuumbwa kwekasi uye tsime remadziro gaka pakati pehukuru hwakasiyana, apo simende paste kuburikidza nemukaha mukuru, madhaka epakutanga ari nyore kutsiva dhaka; pane zvinopesana, iyo gap idiki, nekuda kweiyo mvura inoyerera kuramba yakakura, iyo simende paste yakaoma kutsiva yepakutanga dhaka, kuumbwa kweinozivikanwa slurry slurry trenching phenomenon. Mushure mekugadzirwa kweiyo trenching phenomenon, haigone kunyatsovhara mafuta uye gasi layer, oiri uye gasi zvinoyerera nepakati pezvikamu pasina simende mhete.

Iko kushandiswa kwecasing centralizeris kuita kuti casing igare pakati zvakanyanya sezvinobvira panguva yekuisa simende. Kune matsime anotungamira kana matsime ane kurerekera kukuru, zvinonyanya kukosha kushandisa casing centralizer. Pamusoro pekudzivirira zvinobudirira simende slurry kubva mukumhanya kubva mugororo, kushandiswa kwekasi corrector kunoderedzawo njodzi yekuti casing inonamirwa nekusiyana kwekumanikidza. Nekuti iyo casing iri pakati, iyo casing haizove padyo nemadziro etsime, uye kunyangwe muchikamu chetsime ine yakanaka permeability, iyo casing haizobatikirwe nyore nedhaka keke rakagadzirwa nekusiyanisa kudzvanywa, izvo zvinozotungamira mukubooresa. . Iyo casing centralizer inogona zvakare kudzikisa dhigirii rekukotama mugomba (kunyanya muchikamu chikuru chegomba), izvo zvinoderedza kupera uye kubvaruka kwemidziyo yekuchera kana mamwe maturusi ekudzikisa pane casing panguva yekudhirowa mushure mekunge casing yadzikiswa, uye kuita basa rekuchengetedza casing. Nekuda kweiyo centralizer yecasing neye casing centralizer mudziyo, iyo yekubatanidza nzvimbo pakati pekasi uye tsime madziro inoderedzwa, izvo zvinoderedza kupokana pakati pekasi nemadziro etsime, uye inobatsira kudzikiswa kwekasi mutsime. , uye inobatsira pakufamba kwecasing pakusimbisa tsime.

Kupfupisa, kushandiswa kwecasing centralizer iri nyore, iri nyore uye yakakosha chiyero chekuvandudza kunaka kwesamende.