Polyanionic cellulose (PAC) ipolymer inonyungudika nemvura inoshandiswa zvakanyanya muindasitiri yepetroleum sekuwedzera kwemvura yekuchera. Iyo polyanionic yakabva kune cellulose, yakagadzirwa nekemikari shanduko ye cellulose ine carboxymethyl. PAC ine zvivakwa zvakanakisa senge yakakwira mvura solubility, kugadzikana kwekupisa, uye hydrolysis kuramba. Izvi zvivakwa zvinoita kuti PAC ive yakanakira yekuwedzera yekuchera mvura masisitimu mukutsvagisa peturu nekugadzira.
Iko kushandiswa kwePAC mukuchera oiri kunonyanya kukonzerwa nekugona kwayo kudzora viscosity uye kusefa zvimiro zvezvinwiwa zvekuchera. Viscosity control chinhu chakakosha mumabasa ekuchera sezvo ichikanganisa kuchera nekuchengetedzeka. Kushandiswa kwePAC kunobatsira kudzikamisa viscosity yemvura yekuchera, iyo inonyanya kukosha kuchengetedza kuyerera kwemvura yekuchera. Iyo viscosity yemvura yekuchera inodzorwa nekusangana kwePAC inoshandiswa uye huremu hwemamorekuru epolymer. Iyo PAC molecule inoshanda seyakakora, kana viscosifier, nekuti inowedzera viscosity yemvura yekuchera. Iyo viscosity yemvura yekuchera inoenderana nePAC kusungwa, dhigirii rekutsiva uye huremu hwemamorekuru.
Filtration control ndechimwe chinhu chakakosha mukuita kwekuchera. Filtration performance ine chekuita nemwero wekuti mvura inopinda mumadziro etsime panguva yekuchera. Kushandisa PAC kunobatsira kuvandudza kusefa kutonga uye kuderedza kupindira kwemvura. Fluid intrusion inogona kutungamira mukurasikirwa kwekutenderera, kukuvadzwa kwekugadzira uye kuderera kwekuchera. Kuwedzera PAC kune mvura yekuchera inogadzira gel-senge chimiro chinoshanda sekeke resefa pamadziro etsime. Iyi keke yekusefa inoderedza kupindira kwemvura, ichibatsira kuchengetedza kutendeseka kwetsime uye kuderedza njodzi yekuumbwa kwekukuvara.
PAC inoshandiswa zvakare kuvandudza shale kudzvanya zvivakwa zvekuchera zvinwiwa. Shale kudzvinyirirwa ndiko kugona kwemvura yekuchera kudzivirira reactive shale kubva kune hydrating uye kuzvimba. Hydration uye kuwedzera kwe reactive shale kunogona kutungamirira kumatambudziko akadai sekusagadzikana kwetsime, pombi inonamira, uye kurasika kutenderera. Kuwedzera PAC kune mvura yekuchera inogadzira chipingamupinyi pakati pe shale nemvura yekuchera. Ichi chipingamupinyi chinobatsira kuchengetedza kutendeseka kwemadziro etsime nekudzikisa hydration uye kuzvimba kwe shale.
Kumwe kushandiswa kwePAC mukuchera oiri kwakafanana nekuwedzera kurasikirwa kwemvura. Kurasika kwefiltration kunoreva kurasikirwa kwemvura yekuchera ichipinda muchimiro panguva yekuchera. Kurasikirwa uku kunogona kutungamira kukuvadzwa kwekugadzira, kurasikirwa kutenderera uye kuderedzwa kwekuchera kudhiraivha. Iko kushandiswa kwePAC kunobatsira kuderedza kurasikirwa kwemvura nekugadzira keke resefa pamadziro etsime rinovharira kuyerera kwemvura mukuumbwa. Kudzikira kurasikirwa kwemvura kunobatsira kuchengetedza kutendeka kwetsime uye kunatsiridza kuchera.
PAC inogona zvakare kushandiswa kuvandudza kugadzikana kwetsime remvura yekuchera. Wellbore kugadzikana zvinoreva kugona kwemvura yekuchera kuchengetedza kugadzikana kwemutsime panguva yekuchera. Iko kushandiswa kwePAC kunobatsira kudzikamisa madziro etsime nekugadzira keke resefa pamadziro etsime. Iyi keke yekusefa inoderedza kupindira kwemvura mumadziro uye inoderedza njodzi yekusagadzikana kwetsime.
Iko kushandiswa kwe polyanionic cellulose mukuchera oiri kunopa akawanda mabhenefiti. PAC inoshandiswa kudzora viscosity uye kusefa kuita kwemvura yekuchera, kunatsiridza shale inhibition kuita, kuderedza kurasikirwa kwekusefa, uye kugadzirisa wellbore kugadzikana. Iko kushandiswa kwePAC mukuchera oiri kunobatsira kuwedzera kushanda zvakanaka uye kuderedza njodzi yekukuvadzwa kwekuumbwa, kurasika kutenderera uye kusagadzikana kwetsime. Naizvozvo, kushandiswa kwePAC kwakakosha mukubudirira kwekuchera nekugadzira mafuta.
Nguva yekutumira: Oct-08-2023