Checkpoint 3: Cov dej tsis tiav yog qhov # 1 ntsiag to tsis ua haujlwm (kho qhov kev txiav txim sib xyaw thiab sijhawm)
QhuavPAMthiab ntauPAM emulsionsdaim ntawv "ntses-qhov muag" (gelled clumps) yog ntxiv ceev dhau los yog mus rau hauv qhov tsis ncaj ncees lawm turbulence zone. Cov polymer uas nyob rau hauv yeej tsis yaj, yog li koj cov koob tshuaj zoo tuaj yeem poob qis heev.
Tswv yim hydration
· Ntxiv polymer rau dej, tsis yog dej rau polymer.
· Siv lub vortex, tab sis tsis txhob ua phem cavitation (saib shear checkpoint).
· Tso cai rau kev laus txaus tom qab ntub dej: ntau lub siab -MW cov khoom xav tau 30-60 feeb kom ncav cuag viscosity thiab kev ua haujlwm; qee qhov xav tau ntev dua nyob ntawm qhov kub thiab txias.
Field clue: yog tias cov tshuaj tau pom "stringy" gel me ntsis, tsis sib xws viscosity, los yog ntsaws strainers / injectors, xav tias tsis tiav hydration thiab cov txheej txheem kev npaj ua ntej.
Checkpoint 4: Shear rhuav tshem ntev - saw PAM (thiab nws zoo li "tsis muaj txiaj ntsig")
PAM ua haujlwm loj vim tias cov hlua txuas txuas ntev ntev. Ntau dhau shear (siab- twj tso kua mis ceev, ceev clearances, koob li qub, zoo li qub mixers ntawm siab ΔP) tuaj yeem txiav chains thiab kev ua haujlwm tawg.
Siab -txoj kev pheej hmoo txiav cov ntsiab lus rau kev tshuaj xyuas
· Centrifugal twj tso kua mis ntawm zoo zoo polymer kua (tshwj xeeb tshaj yog me me impellers ntawm siab RPM).
· Recirculation loops siv "kom nws sib xyaw."
· Txhaj los ntawm qhov chaw me me, koob li qub, tshuaj tsuag lub taub hau, lossis cov pob txha pob txha.
Kev kuaj mob ceev: yog tias koj cov tshuaj tshiab tau pom muaj kuab ntau dua li cov tshuaj tom qab nqus dej, qhov kev txiav degradation yuav zoo li qub.
Checkpoint 5: Ua tsis ncaj ua-down concentration ua rau clumping lossis tswj tsis zoo pub noj
Yog hais tias cov tshuaj polymer yog concentrated heev, nws hydrates unevenly thiab ua nyuaj rau meter. Dilute dhau lawm, thiab koj lub twj tso kua mis yuav tsis xa cov tshuaj ruaj khov ntawm qhov qis qis, thiab koj tuaj yeem hla dhau -shear rau "tsav ntim txaus."
Cov tsos mob zoo ib yam uas taw qhia ua rau- txo qhov concentration siab dhau lossis qis dhau:
A.Dab tsi koj saib: Gel "ntses-qhov muag," cov hlua, lossis cov pob tsis sib xyaw
Qhov teeb meem yuav tshwm sim: ntau dhau los yog nrawm ntxiv
Yuav ua li cas: Tsawg concentration, qeeb feed-nyob rau hauv, txhim kho wetting
B.Yuav ua li cas koj saib: koob tshuaj "huv" los yog tsis ruaj tsis khov ntawm qis ntws
Tej yam teeb meem: Ntau dhau dilute rau lub twj tso kua mis tswj ntau yam
Yuav ua li cas: Ua kom concentration me ntsis lossis siv qhov ntsuas ntsuas zoo dua
C.Yuav ua li cas koj saib: Viscosity collapses tom qab hloov/tswj
Tej yam teeb meem: shear puas amplified los ntawm siab viscosity
Yuav ua li cas: Txo cov ntsiab lus shear; xav txog qis concentration
Txoj cai ntawm tus ntiv tes xoo: qhov "zoo tshaj" ua kom-down concentration yog qhov qis tshaj plaws uas tseem muab cov ntsuas ntsuas ruaj khov thiab tsim nyog ntim ntim, yam tsis muaj kev quab yuam hnyav.
Txuas ntxiv...
