Indlela yokuQinisekisa iGel Amandla e-Cellulose Ether

Ukulinganisa amandla eijeli ye-ether cellulose, inqaku libonisa ukuba nangona i-cellulose ether gel kunye ne-jelly-like-profile control agents zineendlela ezahlukeneyo ze-gelation, zingasebenzisa ukufana ngokubonakalayo, oko kukuthi, azikwazi ukuhamba emva kwe-gelation Kwimeko eqinile, indlela yokujonga esetyenziswa ngokuqhelekileyo, indlela yokujikeleza kunye nendlela yokuvula i-vacuum yokuvavanya amandla ejeli isetyenziselwa ukuvavanya amandla ejeli ye-cellulose ether, kwaye indlela entsha yoxinzelelo olufanelekileyo yongezwa. Ukusetyenziswa kwezi ndlela zine ekumiselweni kwamandla ejeli ye-cellulose ether kwahlalutywa ngokusebenzisa imifuniselo. Iziphumo zibonisa ukuba indlela yokujonga inokuvavanya kuphela ngokusemgangathweni amandla e-ether cellulose, indlela yokujikeleza ayifanelekanga ukuvavanya amandla e-cellulose ether, indlela yokucoca inokuvavanya kuphela amandla e-cellulose ether kunye namandla angaphantsi kwe-0.1 MPa, kwaye Uxinzelelo olulungileyo olusanda kufakwa Le ndlela inokuvavanya ngokobungakanani amandla ejeli ye-ether cellulose.

Amagama angundoqo: ijeli; ijeli ye-ether cellulose; amandla; indlela

0.Intshayelelo

Ii-agents ezisekelwe kwiprofayili ye-polymer jelly zisetyenziswa kakhulu kwi-oilfield water plugging kunye nokulawulwa kweprofayili. Nangona kunjalo, kwiminyaka yakutshanje, i-gel cellulose ether yokuplaga kunye nenkqubo yokulawula iqondo lobushushu kunye ne-thermal reversible ether kunye nenkqubo yokulawula ngokuthe ngcembe ibe yindawo yophando yokufaka iplagi yamanzi kunye nokulawulwa kweprofayili kwimithombo yeoli enzima. . Amandla e-gel ye-cellulose ether yenye yezona zibonakaliso ezibaluleke kakhulu zokuplaga, kodwa akukho mgangatho ofanayo wendlela yokuvavanya amandla ayo. Iindlela eziqhelekileyo ezisetyenziselwa ukuvavanya amandla e-jelly, njengendlela yokujonga - indlela echanekileyo kunye neyoqoqosho yokuvavanya amandla e-jelly, sebenzisa itheyibhile yekhowudi yamandla e-jelly ukugweba inqanaba lamandla e-gel ukuba alinganiswe; indlela yokujikeleza - izixhobo ezisetyenziswa ngokuqhelekileyo yi-Brookfield viscometer kunye ne-rheometer, iqondo lobushushu le-Brookfield viscometer test sample lilinganiselwe ngaphakathi kwe-90°C; indlela yokukhupha i-vacuum - xa umoya usetyenziselwa ukukrazula i-gel, ubuninzi bokufunda kwi-gauge ye-pressure gauge ibonisa amandla e-gel. Indlela ye-gelling ye-jelly kukongeza i-agent edibanisa umnqamlezo kwisisombululo se-polymer. I-arhente yomnqamlezo kunye nekhonkco yepolymer idityaniswe ngamabhondi ekhemikhali ukwenza isakhiwo sothungelwano lwesithuba, kwaye isigaba solwelo sihlanganiswe kuyo, ukuze yonke inkqubo ilahlekelwe yi-fluidity, kwaye emva koko iguqule Ijeli, le nkqubo ayinakuguqulwa kwaye lutshintsho lwekhemikhali. Indlela ye-gel ye-ether ye-cellulose kukuba kwiqondo eliphantsi lobushushu, i-macromolecules ye-ether ye-cellulose ijikelezwe ngama-athomu amancinci ngamanzi ngokusebenzisa iibhondi ze-hydrogen ukwenza isisombululo esinamanzi. Njengoko ukushisa kwesisombululo kuphakama, iibhondi ze-hydrogen ziyatshatyalaliswa, kwaye iimolekyuli ezinkulu ze-cellulose ether Imeko apho iamolekyu zihlangene ngokusebenzisana kwamaqela e-hydrophobic ukwenza i-gel yinguqu yomzimba. Nangona i-gelation mechanism yezo zimbini yahlukile, inkangeleko inesimo esifanayo, oko kukuthi, i-immobile semi-solid state yenziwa kwindawo ene-three-dimensional space. Ingaba indlela yokuvavanya amandla ejeli ikulungele ukuvavanya amandla ejeli ye-cellulose ether ifuna ukuphononongwa kunye novavanyo lokuqinisekisa. Kweli phepha, iindlela ezintathu zendabuko zisetyenziselwa ukuvavanya amandla e-cellulose ether gels: indlela yokujonga, indlela yokujikeleza kunye ne-breakthrough vacuum method, kunye nendlela yokuphumelela kwengcinezelo echanekileyo yenziwa kule siseko.

1. Inxalenye yovavanyo

1.1 Izixhobo eziphambili zokulinga kunye nezixhobo

Ubushushu obungaguqukiyo bokuhlambela amanzi, DZKW-S-6, Beijing Yongguangming Medical Instrument Co., Ltd.; ukushisa okuphezulu kunye noxinzelelo oluphezulu lwe-rheometer, i-MARS-III, eJamani inkampani ye-HAAKE; ajikelezayo amanzi impompo vacuum yeenjongo ezininzi, SHB-III, Gongyi Red Instrument Equipment Co., Ltd.; inzwa, DP1701-EL1D1G, Baoji Best Control Technology Co., Ltd.; inkqubo yokufumana uxinzelelo, Shandong Zhongshi Dashiyi Technology Co., Ltd.; tube colorimetric, 100 mL, Tianjin Tianke Glass Instrument Manufacturing Co., Ltd.; ibhotile yeglasi ephezulu yokumelana nobushushu, 120 mL, iSchott Glass Works, eJamani; initrogen esulungekileyo, iTianjin Gaochuang Baolan Gas Co., Ltd.

1.2 Iisampulu zovavanyo kunye nolungiselelo

IHydroxypropyl methylcellulose ether, 60RT400, Taian Ruitai Cellulose Co., Ltd.; nyibilikisa i-2g, i-3g kunye ne-4g ye-hydroxypropylmethylcellulose ether kwi-50 mL yamanzi ashushu kwi-80℃, xuba kakuhle kwaye wongeze i-25℃ye-50 mL yamanzi abandayo, iisampuli zachithwa ngokupheleleyo ukwenza izisombululo ze-cellulose ether kunye noxinzelelo lwe-0.02g / mL, 0.03g / mL kunye ne-0.04g / mL ngokulandelanayo.

1.3 Indlela yovavanyo yovavanyo lwamandla ejeli ye-cellulose ether

(1) Ivavanywe ngendlela yokujonga. Umthamo weebhotile zeglasi ezikwazi ukumelana nobushushu obuphezulu ezisetyenziswa kuvavanyo yi-120mL, kwaye umthamo wesisombululo se-cellulose ether yi-50mL. Beka izisombululo ze-cellulose ether ezilungisiweyo kunye noxinzelelo lwe-0.02g/mL, 0.03g/mL kunye ne-0.04g/mL kwibhotile yeglasi ekwazi ukumelana nobushushu obuphezulu, uyiguqule kumaqondo obushushu ahlukeneyo, kwaye uthelekise oku kugxininiswa okungentla okuthathu ngokwamandla ejeli. Amandla e-gelling ye-cellulose ether isisombululo samanzi savavanywa.

(2) Ivavanywe yindlela yokujikeleza. Isixhobo sovavanyo esisetyenzisiweyo kolu vavanyo yi-rheometer yobushushu obuphezulu kunye noxinzelelo oluphezulu. I-cellulose ether isisombululo se-aqueous kunye ne-concentration ye-2% ikhethiwe kwaye ifakwe kwi-drum yokuvavanya. Izinga lokufudumeza yi-5℃/ 10 min, izinga lokucheba yi-50 s-1, kwaye ixesha lokuvavanya ngu-1 min. , Uluhlu lokufudumeza luyi-40～110℃.

(3) Ivavanywe nge-vacuum indlela yokuphumelela. Xhuma iityhubhu ze-colorimetric eziqulethe i-gel, vula ipompo yokucoca, kwaye ufunde ubuninzi bokufunda kwe-gauge yoxinzelelo xa umoya uqhekeza i-gel. Isampulu nganye iqhutywe kathathu ukufumana ixabiso eliphakathi.

(4) Uvavanyo ngendlela yoxinzelelo oluhle. Ngokomgaqo wenkqubo yesidanga se-vacuum, siyiphucule le ndlela yovavanyo kwaye samkela indlela yoxinzelelo olulungileyo. Xhuma iityhubhu ze-colorimetric eziqulethe i-gel, kwaye usebenzise inkqubo yokufumana uxinzelelo ukuvavanya amandla e-cellulose ether gel. Ubungakanani bejel esetyenzisiweyo kuvavanyo yi-50mL, umthamo wetyhubhu ye-colorimetric yi-100mL, i-diameter yangaphakathi yi-3cm, ububanzi bangaphakathi bombhobho ojikelezayo ofakwe kwi-gel ngu-1cm, kwaye ubunzulu bokufakwa bu-3cm. Layita kancinci iswitshi yenitrogen cylinder. Xa idatha yoxinzelelo ebonisiweyo yehla ngokukhawuleza kwaye ngokukhawuleza, thatha indawo ephezulu njengexabiso lamandla elifunekayo ukuqhekeza ijeli. Isampulu nganye iqhutywa kathathu ukufumana ixabiso eliphakathi.

2. Iziphumo zovavanyo kunye nengxoxo

2.1 Ukusetyenziswa kwendlela yokujonga ukuvavanya amandla ejeli ye-cellulose ether

Njengomphumo wokuvavanya amandla e-gel ye-ether ye-cellulose ngokuqwalasela, ukuthatha isisombululo se-cellulose ether kunye ne-concentration ye-0.02 g / mL njengomzekelo, kuyaziwa ukuba inqanaba lamandla ngu-A xa ubushushu bungama-65.°C, kwaye amandla aqala ukunyuka njengoko iqondo lobushushu linyuka, xa ubushushu bufikelela kuma-75℃, ibonisa isimo sejeli, ibakala lamandla liyatshintsha ukusuka ku-B ukuya ku-D, kwaye xa ubushushu buphakama ukuya kwi-120.℃, ibakala lamandla liba ngu-F. Inokubonwa ukuba umphumo wokuvavanya le ndlela yokuvavanya ibonisa kuphela inqanaba lamandla ejeli, kodwa ayikwazi ukusebenzisa idatha ukubonisa amandla athile ejeli, oko kukuthi, ikhwalithi kodwa ayikho. ubungakanani. Inzuzo yale ndlela kukuba ukusebenza kulula kwaye kunembile, kwaye i-gel enamandla afunekayo inokujongwa ngexabiso elincinci ngale ndlela.

2.2 Ukusetyenziswa kwendlela yokujikeleza ukuvavanya amandla e-gel ye-cellulose ether

Xa isisombululo sifudunyezwa kwi-80°C, i-viscosity yesisombululo yi-61 mPa·s, ngoko i-viscosity ikhula ngokukhawuleza, kwaye ifikelela kwixabiso eliphezulu le-46 790 mPa.·s ngo 100°C, kwaye ke amandla ayancipha. Oku akuhambelani nento ebonwe ngaphambili yokuba i-viscosity ye-hydroxypropyl methylcellulose isisombululo se-ether ether iqala ukunyuka kwi-65.°C, kwaye iijeli zivela malunga nama-75°C kwaye amandla aqhubeka ekhula. Isizathu sale nto kukuba i-gel iphukile ngenxa yokujikeleza kwe-rotor xa kuhlolwa amandla e-gel ye-cellulose ether, okubangelwa idatha engalunganga yamandla e-gel kumaqondo okushisa alandelayo. Ngoko ke, le ndlela ayifanelekanga ukuvavanya amandla e-cellulose ether gels.

2.3 Ukusetyenziswa kwendlela yokucoca i-vacuum yokuvavanya amandla ejeli ye-cellulose ether

Iziphumo zovavanyo lwamandla ejeli ye-cellulose ether ziye zavavanywa ngenkqubo yokucoca i-vacuum. Le ndlela ayibandakanyi ukujikeleza kwe-rotor, ngoko ke ingxaki yokuqhawula i-colloidal kunye nokuphuka okubangelwa ukujikeleza kwe-rotor kunokuphetshwa. Ukususela kwiziphumo zovavanyo ezingentla, kunokubonwa ukuba le ndlela inokuvavanya ngokobungakanani amandla ejeli. Xa iqondo lobushushu liyi-100°C, amandla e-cellulose ether gel ene-concentration ye-4% inkulu kune-0.1 MPa (iqondo eliphezulu le-vacuum), kwaye amandla akanakulinganiswa ngaphezu kwe-0.1 MPa. Amandla e-gel, oko kukuthi, umda ophezulu wamandla e-gel ahlolwe yile ndlela yi-0.1 MPa. Kulo vavanyo, amandla e-cellulose ether gel mkhulu kune-0.1 MPa, ngoko ke le ndlela ayifanelekanga ukuvavanya amandla e-cellulose ether gel.

2.4 Ukusetyenziswa kwendlela yoxinzelelo oluhle ukuvavanya amandla e-gel ye-cellulose ether

Indlela yoxinzelelo elungileyo yayisetyenziselwa ukuvavanya iziphumo zovavanyo lwe-cellulose ether gel gel. Ingabonwa ukuba le ndlela inokuvavanya ngokobungakanani bejeli ngamandla angaphezu kwe-0.1 MPa. Inkqubo yokufumana idatha esetyenziswe kuvavanyo yenza iziphumo zovavanyo zichaneke ngakumbi kunedatha yokufunda eyenziweyo kwindlela yesidanga se-vacuum.

3. Isiphelo

Amandla ejeli ye-cellulose ether abonise ukuthambekela kokunyuka ngokubanzi kunye nokunyuka kweqondo lokushisa. Indlela yokujikeleza kunye nendlela yokucoca i-vacuum ayifanelekanga ukumisela amandla e-cellulose ether gel. Indlela yokuqwalasela inokulinganisa kuphela ngokomgangatho amandla ejeli ye-cellulose ether, kwaye indlela entsha yoxinzelelo olulungileyo inokuvavanya ngokobungakanani amandla ejeli ye-cellulose ether.