Muindasitiri yekuchera, madhaka akasiyana-siyana (kana mvura yekuchera) zvinhu zvakakosha kuti ive nechokwadi chekufambira mberi kwakanaka kwekuchera. Kunyanya munzvimbo dzakaoma dze geological, kusarudzwa uye kugadzirira kwekuchera madhaka kune zvakakosha pakubudirira, kuchengeteka uye kudzora mari yekushanda kwekuchera. zvakananga kukanganisa.Hydroxyethyl Cellulose (HEC)ndeye yakasikwa cellulose derivative inoita basa rakakosha sekuwedzera mukuchera madhaka. Iyo ine yakanaka thickening, rheology, anti-kusvibiswa zvivakwa uye yakakwirira Environmental yakachengeteka, inoshandiswa zvakanyanya mukuchera mvura masisitimu.
1. Hunhu uye chimiro chemakemikari cheHEC
HEC inonyungudika mumvura, isiri-chepfu uye isingakuvadzi yemhando yepolymer compound. Iyo kemikari yakagadziridzwa cellulose inopinza hydroxyethyl mapoka muchimiro chayo chemamorekuru, nokudaro ichigadzira kusimba kwakasimba uye kunyungudika kwemvura. Kushandiswa kweHEC mukuchera zvinwiwa kunonyanya kutsamira pamapoka ehydrophilic (hydroxyl uye hydroxyethyl mapoka) mumaketani ayo emamorekuru. Aya mapoka anogona kuumba yakanaka hydrogen bonding network mune aqueous solution, ichipa mhinduro viscosity-inowedzera zvivakwa. .
2. Basa guru reHEC mukuchera madhaka
thickening agent effect
Rimwe remabasa akanyanya kukosha eHEC mukuchera zvinwiwa zvakaita sekukora. Iyo yakakwirira viscosity maitiro eHEC inogona kuwedzera zvakanyanya viscosity yekuchera mvura, kuve nechokwadi chekuti mvura yekuchera ine yakakwana yekutsigira kugona kubatsira kutakura cuttings uye jecha particles uye kutakura marara ekuchera kubva pasi petsime kusvika pamusoro. Kuwedzera viscosity yemvura yekuchera kunobatsirawo kuderedza kukwesha pamadziro emukati mechubhu yekuchera, nekudaro kunatsiridza kudhirowa kwakanaka. Pamusoro pezvo, HEC's yakasimba thickening zvivakwa uye yakagadzikana viscosity inoita kuti iwane yakanakira kukora mhedzisiro pakudzika kwakadzika, zvinobudirira kuderedza mitengo yekuchera.
Basa remumiriri wekurasikirwa kwemvura
Panguva yekuchera, kudzora kurasikirwa kwemvura yemvura yekuchera chinhu chakakosha kufunga. Fluid kurasikirwa kwekudzora kwakakosha kuchengetedza kugadzikana kwemadziro etsime kudzivirira kupinda kwakanyanya kwemvura yedhaka mukuumbwa, zvichikonzera kudonha kwekuumbwa kana kusagadzikana kwemadziro. Nekuda kweiyo yakanaka hydration zvimiro, HEC inogona kuumba dense layer yefirita keke pamadziro etsime, ichidzikisa kupinza kwemvura mumvura yekuchera mukugadzira, nekudaro inodzora zvinobudirira kurasikirwa kwemvura mumatope. Iyi keke yekusefa haina chete kusimba uye kusimba kwakanaka, asi inogona zvakare kuchinjika kune akasiyana geological layers, nekudaro ichichengetedza kugadzikana kwemadziro emutsime mumatsime akadzika uye yakakwirira tembiricha nharaunda.
Rheological agents uye kudzora kuyerera
HEC inoitawo basa rakakosha mukugadzirisa fluidity mukuchera madhaka. Iyo rheology yekuchera mvura inoreva kushanduka kwayo kana kuyerera kugona pasi pekuita kwekuveura kushushikana. Iyo iri nani iyo rheology, ndiyo yakanyanya kunaka iyo mvura yekuchera iri pakufambisa kumanikidza uye kutakura makucheka panguva yekuchera. HEC inogona kugadzirisa rheological properties yedrilling fluid nekushandura viscosity yayo uye fluidity, nokudaro ichivandudza shear dilution effect yematope, ichibvumira matope kuti ayerere zvakanaka mupombi yekuchera uye nekuvandudza lubrication maitiro ematope. Kunyanya mukuchera matsime akadzika uye matsime akadzikama, iyo rheological kugadzirisa mhedzisiro yeHEC inonyanya kukosha.
Kunatsiridzwa kwetsime rekuchenesa
Iko kukora mhedzisiro yeHEC haingobatsiri mukukwanisa kwedhaka rekuchera kutakura nekumisa kucheka kwekucheka, asi kunobatsirawo kusimudzira kuchena kwetsime. Munguva yekuchera, huwandu hwakawanda hwekucheka huchagadzirwa mutsime. Kana izvi zvicherwa zvisingakwanisi kuitwa nemadhaka zvinobudirira, zvinogona kuunganidza pasi pegomba uye kuumba pasi-gomba sediments, nekudaro zvichiwedzera kupikisa kwechibhorani uye kukanganisa kufambira mberi kwekuchera. Nekuda kwekuita kwayo kukora zvivakwa, HEC inogona kubatsira madhaka kumisa uye kutakura madhiri ekucheka zvinobudirira, nekudaro kuve nechokwadi chehutsanana hwetsime uye kudzivirira kuunganidzwa kwemarara.
Anti-kusvibisa maitiro
Munguva yekuchera, dhaka rinowanzosvibiswa nemaminerari akasiyana-siyana uye kuumbwa kwemvura, zvichiita kuti madhaka akundikana. HEC's anti-kusvibiswa zvivakwa ndeimwe mukana mukuru. HEC yakagadzikana pasi pemamiriro akasiyana-siyana epH uye ine simba rinopesana-kuvhiringidza kukwanisa kune multivalent ions yakadai se calcium uye magnesium, iyo inobvumira kuti ichengetedze yakagadzikana viscosity uye kuwedzera kwemigumisiro mukuumbwa kune maminerari, nokudaro kuderedza Izvi zvinoderedza ngozi yekudonha kudonha mvura mu nzvimbo yakasvibiswa.
Zvakatipoteredza ushamwari uye biodegradable
KubvaHECndeye yakasikwa polymer zvinhu, ine yakanaka biodegradability uye kushamwaridzana kwezvakatipoteredza. Muchirevo chekuwedzera zvishoma nezvishoma zvinodiwa zvekuchengetedza kwezvakatipoteredza, maitiro ebiodegradability eHEC anoita kuti ive chikamu chakakosha chezvakatipoteredza drilling fluid systems. HEC haizokonzeri kusvibiswa kukuru kune zvakatipoteredza panguva yekushandiswa, uye haizove nemigumisiro yakaipa pavhu nemvura yepasi mushure mekuora. Naizvozvo, iyo yemhando yepamusoro yezvakatipoteredza yekuwedzera.
3. Matambudziko uye kubudirira mune ramangwana muHEC zvikumbiro
Kunyange zvazvo HEC ine mabhenefiti akasiyana-siyana mukuchera madhaka, kushanda kwayo pasi pemamiriro ekuchera zvakanyanya akadai sekushisa kwakanyanya uye kumanikidzwa kunoda kuvandudzwa. Semuenzaniso, HEC inogona kusangana nekupisa kwekupisa pakupisa kwakanyanya, zvichiita kuti madhaka arasikirwe neviscosity uye thickening mhedzisiro. Nokudaro, kuitira kuti ishande munzvimbo dzakaoma uye dzakanyanya kuchera, tsvakurudzo mumakore achangopfuura yakatanga kuisa pfungwa pakugadzirisa HEC kuti ivandudze kugadzikana kwayo kwekushisa kwepamusoro uye kusagadzikana kwepamusoro. Semuenzaniso, nekuunza ma-cross-linking agents, mapoka ekudzivirira-kupisa kwepamusoro uye dzimwe nzira dzekugadzirisa kemikari muHEC molecular chain, kushanda kweHEC pasi pemamiriro ezvinhu akaipisisa kunogona kuvandudzwa uye kuchinjwa kune zvinodiwa zvakanyanya kudiwa kwe geological environment.
Sechikamu chakakosha chekuchera madhaka, HEC inoita basa rakakosha mukuchera engineering nekuda kwekukora kwayo, anti-filtration, rheological adjustment, anti-kusvibisa uye kushamwaridzana kwezvakatipoteredza. Mune ramangwana, sekudzika kwekuchera uye kuoma kunowedzera, zvinodiwa zveHEC zvichawedzerawo. Nekugadzirisa nekugadzirisa HEC, chiyero chekushandisa kwayo mumvura yekuchera ichawedzerwazve kuti ienderane nezvinodiwa zvenzvimbo dzakaomesesa dzekuchera. .
Nguva yekutumira: Nov-14-2024