Hydroxyethyl Cellulose (HEC) inoita basa rakakosha mukushanda kwemafuta uye gasi. Seyakawanda inoshanda polymer zvinhu, inoshandiswa zvakanyanya mukuchera zvinwiwa, zvinwiwa zvekupedza, zvinwiwa zvinoputika uye mamwe minda. Mashandisirwo ayo uye mashandisiro anonyanya kuratidzwa mune zvinotevera zvinhu:
1. Kushandiswa kwemvura yekuchera
a. Thickener
Kunyanya kushandiswa kweHEC mukuchera zvinwiwa kunge kukora. Mvura yekuchera (dhaka) inoda kuve nehumwe viscosity kuti ive nechokwadi chekuti kucheka kwekucheka kunotakurwa kumusoro panguva yekuchera kudzivirira kuvhara mutsime. HEC inogona kuwedzera zvakanyanya viscosity yekuchera mvura, ichipa kumira kwakanaka uye kugona kutakura.
b. Wall-building agent
Panguva yekuchera, kugadzikana kwemadziro etsime kwakakosha. HEC inogona kuvandudza kuita kweplugging kwemvura yekuchera uye kugadzira dense layer yedhaka keke pamadziro etsime kudzivirira kudonha kwemadziro kana kudonha kwetsime. Izvi zvinovaka madziro hazvingogadziri kugadzikana kwemadziro etsime, asi zvakare zvinoderedza kurasikirwa kwemvura yekuchera, nekudaro inovandudza kuchera.
c. Rheology inoshandura
HEC ine yakanaka rheological properties uye inogona kugadzirisa rheological properties yekuchera mvura. Nekugadzirisa huwandu hweHEC, kukosha kwegoho uye viscosity yemvura yekuchera inogona kudzorwa, iyo yakakosha pakuita basa rekuchera.
2. Kushandiswa kwemvura yekupedzisa
a. Zvakanaka rusvingo kugadzikana kudzora
Kupedzisa zvinwiwa zvinwiwa zvinoshandiswa kupedzisa kuchera uye kugadzirira kugadzirwa. Sechinhu chakakosha mukupedzisa fluid, HEC inogona kunyatso kudzora kugadzikana kwemadziro etsime. Iyo yekukora zvimiro zveHEC inogonesa kuumba yakagadzika fluid chimiro mumvura yekupedzisa, nekudaro ichipa yakanaka wellbore rutsigiro.
b. Permeability control
Munguva yekupedzisa tsime, HEC inogona kuumba keke yakakora yedhaka inodzivirira mvura kuti isapinda mukati mekugadzira. Iyi ficha yakakosha kudzivirira kukuvara kwekuumbwa uye kudonha kwetsime, uye inovimbisa kufambira mberi kwakatsetseka kwekupedzisa.
c. Fluid kurasikirwa control
Nekugadzira keke yedhaka inoshanda, HEC inogona kuderedza kurasikirwa kwemvura uye kuve nechokwadi chekushandisa kunobudirira kwekupedzisa mvura. Izvi zvinobatsira kuderedza mari yekushandisa uye inovimbisa kuvaka kwakanaka.
3. Kushandiswa kwe fracturing fluid
a. Thickener
Mune hydraulic fracturing operations, the fracturing fluid inoda kutakura proppant (yakadai sejecha) mumaputsika ekugadzirisa kutsigira kuputsika uye kuchengetedza mafuta uye gasi nzira dzakavhurika. Seyakakora, HEC inogona kuwedzera viscosity yeiyo fracturing fluid uye kuwedzera simba rayo rekutakura jecha, nekudaro ichivandudza fracturing effect.
b. Cross-linking agent
HEC inogona zvakare kushandiswa semuchinjiko-inobatanidza mumiriri kuumba gel masisitimu ane yakakwira viscosity uye simba kuburikidza nekuita nemamwe makemikari. Iyi gel system inogona kuvandudza simba rekutakura jecha remvura inoputika uye inoramba yakagadzikana pakupisa kwepamusoro.
c. Degradation control agent
Mushure mekuvhiyiwa kwekutsemuka kwapera, zvakasara mumvura inoputika inoda kubviswa kuti idzorere zvakajairika kupera kwekuumbwa. HEC inogona kudzora maitiro ekuora kuti aderedze iyo fracturing fluid mune yakaderera-viscosity fluid mukati menguva yakatarwa yekubvisa nyore.
4. Kuchengetedzwa kwezvakatipoteredza uye kusimba
Semvura inonyungudika polymer zvinhu, HEC ine yakanaka biodegradability uye kuenderana kwezvakatipoteredza. Kana ichienzaniswa neyechinyakare petroleum-based thickeners, HEC ine zvishoma zvinokanganisa zvakatipoteredza uye inofambirana nekuchengetedzwa kwezvakatipoteredza uye kuchengetedzwa kwezvinodiwa zvemazuva ano oiri uye gasi mashandiro.
Iko kushandiswa kwakakura kwehydroxyethyl cellulose mumafuta uye gasi mashandiro anonyanya kukonzerwa nekukora kwayo, kuvaka-madziro, rheological modification uye mamwe mabasa. Haisi kungovandudza mashandiro ekuchera uye kupera kwemvura, inoitawo basa rakakosha mukupwanya zvinwiwa, kuvandudza kushanda zvakanaka nekuchengetedza. Nekuvandudzwa kwezvinodiwa zvekuchengetedza kwezvakatipoteredza, HEC, sechinhu chinoenderana nemamiriro ekunze, ine tarisiro yakakura yekushandisa.
Nguva yekutumira: Jul-10-2024