Kushandiswa kweCMC muDrilling Fluid

Carboxymethyl cellulose CMCiri chena flocculent hupfu ine yakagadzikana kuita uye inonyungudika nyore mumvura. Mushonga wacho hauna kwazvakarerekera kana kuti alkaline transparent viscous liquid, iyo inopindirana nemamwe maglue anonyungudika nemvura uye resin. Chigadzirwa chacho chinogona kushandiswa seanonamatira, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, etc. Carboxymethyl cellulose inoshandiswa mupetroleum uye gasi rekuchera, kuchera matsime uye mamwe mapurojekiti.

Basa re carboxymethyl cellulose CMC: 1. CMC-ine madhaka inogona kuita kuti tsime remadziro rive rakatetepa uye rakasimba sefa keke ine yakaderera permeability, kuderedza kurasikirwa kwemvura. 2. Mushure mekuwedzera CMC kumatope, chigadziro chekuchera chinogona kuwana simba rekutanga rekuveura, kuitira kuti dhaka risunungure nyore gasi rakaputirwa mairi, uye panguva imwe chete, marara anogona kukurumidza kuraswa mugomba rematope. 3. Kuchera madhaka, semamwe kumiswa uye kupararira, kune hupenyu hwesherufu. Kuwedzera CMC kunogona kuita kuti igadzikane uye kurebesa hupenyu hwesherufu. 4. Madhaka ane CMC haawanzobatwa ne mold, saka hazvidikanwi kuchengetedza yakakwirira pH kukosha uye kushandisa zvinodzivirira. 5. Iine CMC semumiririri wekurapa kwekuchera madhaka ekutsvaira mvura, iyo inogona kudzivisa kusvibiswa kwemunyu wakasiyana-siyana. 6. Madhaka ane CMC ane kugadzikana kwakanaka uye anogona kuderedza kurasikirwa kwemvura kunyangwe tembiricha iri pamusoro pe150°C. CMC ine viscosity yakakwirira uye yakakwirira dhigirii yekutsiva inokodzera dhaka ine yakaderera density, uye CMC ine yakaderera viscosity uye yakakwirira dhigirii yekutsiva inokodzera madhaka ane yakakwirira density. Sarudzo yeCMC inofanirwa kutemerwa zvinoenderana nemamiriro akasiyana senge mhando yedhaka, nzvimbo, uye kudzika kwetsime.

Kushandiswa kweCMC muDrilling Fluid

1. Yakavandudzwa sefa yekurasikirwa kwekuita uye dhaka keke yemhando, yakagadziridzwa anti-kubata kugona.

CMC yakanaka yekurasikirwa kwemvura inoderedza. Kuiwedzera kune madhaka kuchawedzera viscosity yechikamu chemvura, nokudaro kuwedzera kupikisa kwepeji yefiltrate, saka kurasikirwa kwemvura kuchaderedzwa.

Kuwedzerwa kweCMC kunoita kuti dhaka keke riome, riome uye rakatsetseka, nekudaro ichidzikamisa chiitiko chemusiyano wekudzvanya uye kudhirowa kwechishandiso kure kufamba, kudzikisa nguva yekupikisa kune inotenderera tsvimbo yealuminium uye kuderedza chiitiko chekuyamwa mutsime.

Muzhinji madhaka, huwandu hweCMC yepakati viscous chigadzirwa ndeye 0.2-0.3%, uye iyo API kurasikirwa kwemvura kwakadzikira zvakanyanya.

2. Kuvandudzwa kwekutakura dombo uye kuwedzera kugadzikana kwemadhaka.

Nekuti CMC ine yakanaka thickening kugona, panyaya yakaderera ivhu kubviswa zvirimo, kuwedzera akakodzera uwandu CMC zvakakwana kuchengetedza viscosity zvinodiwa kutakura cuttings uye kumisa barite, uye kunatsiridza madhaka kugadzikana.

3. Ramba kupararira kwevhu uye kubatsira kudzivirira kuparara

Kurasika kwemvura kweCMC kunoderedza kuita kunonotsa hydration mwero wedhaka shale pamadziro etsime, uye inovhara mhedzisiro yeCMC refu cheni padombo remadziro tsime inosimbisa chimiro chedombo uye inoita kuti zviome kupepeta nekudonha.

4. CMC idhaka rekurapa mumiririri ane kuenderana kwakanaka

CMC inogona kushandiswa pamwe chete nevamiriri vekurapa vakasiyana-siyana mumadhaka akasiyana masisitimu, uye inowana mhedzisiro yakanaka.

5. Kushandiswa kweCMC mukusimbisa spacer fluid

Iyo yakajairika kuvakwa kwetsime simende uye jekiseni resimende chikamu chakakosha kuve nechokwadi chemhando yekuisa simende. Iyo spacer fluid inogadzirwa neCMC ine zvakanakira kuderedzwa kuyerera kuramba uye nyore kuvaka.

6. Kushandiswa kweCMC mumvura yekushanda

Mukuongorora oiri uye kushanda kwekushanda, kana madhaka epamusoro-soro akashandiswa, zvinokonzeresa kusvibiswa kwakakomba kune mafuta, uye zvichave zvakanyanya kuoma kubvisa kusvibiswa uku. Kana mvura yakachena kana brine ichingoshandiswa semvura inoyerera, kumwe kusvibiswa kwakakomba kuchaitika. Kudonhedza uye kurasikirwa nekusefa kwemvura muchikamu chemafuta kunokonzeresa kuvharika kwemvura, kana kukonzera kuti chikamu chine madhaka chiri muoiri chiwedzere, kukanganisa kupenya kwemafuta, uye kuunza nhevedzano yematambudziko kubasa.

CMC inoshandiswa mu workover fluid, iyo inogona kubudirira kugadzirisa matambudziko ari pamusoro. Kune yakaderera-kudzvanywa matsime kana yakakwira-kudzvanywa matsime, iyo fomula inogona kusarudzwa zvinoenderana neiyo yekudonha mamiriro:

Low-pressure layer: kudonha zvishoma: mvura yakachena + 0.5-0.7% CMC; general leakage: mvura yakachena + 1.09-1.2% CMC; kudonha kwakakomba: mvura yakachena + 1.5% CMC.