Khoom Description
Polyacrylamide, yog cov hmoov dej-soluble polymer nrog sib txawv molecular hnyav thiab nqi ceev. Nws yog feem ntau yog siv los ua kom cov viscosity ntawm dej los yog txhawb kom flocculation ntawm cov khoom uas muaj nyob rau hauv dej thiab tso cai sai sai ntawm finely suspended solids. Nws yog cov khoom siv hluavtaws uas tuaj yeem tsim kho kom haum rau ntau yam kev siv.
Flocculation nyhuv ntawm oilfield tshuaj kho tus neeg saib xyuas polyacrylamide PAM nyob rau hauv cov txheej txheem drilling yog ib tug loj tus neeg siv ntawm polyacrylamide nyob rau hauv cov roj av kev lag luam. Lub oilfield tshuaj kho tus neeg saib xyuas polyacrylamide PAM tau siv nyob rau hauv cov teb ntawm tertiary roj rov qab, drilling, dej plugging thiab profile tswj.
Cov txheej txheem thev naus laus zis ntawm polypropylene polymers tau nrawm txhim kho kev lag luam roj av, thiab qhov kev thov ntawm cov roj av kev lag luam tau ua kom cov thev naus laus zis tshiab thiab txhim kho polyacrylamide PAM. Polyacrylamide, raws li cov kua dej drilling, tsuas yog pib siv rau hauv qhov drilling hauv nruab nrab-20 xyoo pua, ua rau muaj kev hloov pauv loj hauv kev txhim kho cov dej drilling. Nws tsis tsuas yog txhim kho drilling ceev, tab sis kuj coj mus rau txoj kev loj hlob ntawm drilling kua hom los ntawm tej yam ntuj tso polymers rau hluavtaws, thiab coj drilling kua tshuab mus rau ib tug scientific txoj kev loj hlob theem.
Hauv cov dej drilling, nws tuaj yeem siv los ua cov av nkos kev ua haujlwm hloov pauv hauv cov txheej txheem drilling. Lub luag haujlwm ntawm polyacrylamide yog txhawm rau txhim kho rheology ntawm cov kua dej drilling, nqa cov pob zeb khib nyiab, lubricate lub laum me ntsis, thiab nce nws qhov nkag mus. Tsis tas li ntawd, nws tuaj yeem txo cov kev sib tsoo zoo heev, txo cov cuab yeej siv, tiv thaiv kom tsis txhob muaj qhov tawg thiab lub qhov dej tawg, thiab tsis txhob tsim kev puas tsuaj thaum lub sij hawm dulling.
Lub luag haujlwm tseem ceeb ntawm polyacrylamide nyob rau hauv oilfield drilling yog nws cov flocculation, thiab cov khoom theem nyob rau hauv cov dej drilling yog ib qho tseem ceeb cuam tshuam rau tus nqi thiab ceev ntawm cov dej drilling. Thaum xyoo 1960s, cov khoom siv polymer flocculants tau nkag mus rau hauv cov dej drilling txawv teb chaws, thiab cov khoom zoo uas tsis tshua muaj cov khoom siv polymer drilling dej tau siv, ua rau muaj kev nce ntxiv hauv cov dej drilling ceev thiab dhau los ua ib qho ntawm plaub yam tseem ceeb hauv kev lag luam niaj hnub drilling. .
Polymer flocculants tuaj yeem khaws cov drilling cuttings thiab cov av tsis zoo nyob rau hauv lub xeev tsis dispersed flocculation nyob rau hauv drilling kua, uas yuav raug tshem tawm los ntawm txhua yam khoom tswj cov khoom. Qhov no daws tau qhov teeb meem ntawm dispersion thiab tsub zuj zuj ntawm drilling cuttings nyob rau hauv dispersed drilling kua systems, tsis tsuas yog accelerating neeg kho tshuab drilling ceev, tab sis kuj txo tau ntau yam teeb meem thaum lub sij hawm drilling txheej txheem, zoo tiv thaiv cov roj thiab roj reservoirs thiab txo cov cav drilling.
Cov polyacrylamide flocculants siv nyob rau hauv drilling kua muaj xws li tsis hydrolyzed polyacrylamide thiab hydrolyzed polyenediamine. Hydrolyzed polyacrylamide yog ib qho kev xaiv flocculant, thaum uas tsis yog hydrolyzed polyacrylamide yog tag nrho flocculant. Cov molecules ntawm non hydrolyzed polyacrylamide tsuas yog muaj pawg polar amide, uas tsis nqa cov nqi tsis zoo. Cov hydration zaj duab xis yog nyias, thiab lub zog repulsion ntawm lawv thiab cov av tsis zoo thiab cov av zoo yog me me. Thaum ntsib ob hom khoom no, kev sib txuas thiab adsorption tuaj yeem tshwm sim; Hydrolyzed polyacrylamide flocculant tsis tsuas yog flocculates drilling cuttings nyob rau hauv drilling kua, tab sis kuj zoo av nyob rau hauv drilling kua, ua si lub luag hauj lwm nyob rau hauv tag nrho cov flocculation. Thaum hydrolyzed polyacrylamide nce mus txog ib qib ntawm hydrolysis, nws nqa ib tug kuj tsis zoo nqi ceev thiab kuj muaj ib tug thicker hydration zaj duab xis.
Thaum mus txog qhov zoo ntawm cov av zoo, muaj lub zog loj electrostatic repulsion force thiab hydration film repulsion force ntawm lawv, ua rau nws nyuaj rau adsorb cov av zoo; Thaum nws nyob ze rau qhov drilling cuttings, nws yog ib qho yooj yim los tsim adsorption, tsim flocculent agglomerates, uas raug tshem tawm ntawm cov dej drilling thiab ua si lub luag hauj lwm xaiv flocculation.
Peb qhov zoo:
∇ Pab neeg ua haujlwm pabcuam kev lag luam txawv teb chaws thiab cov kws tshaj lij.
∇ Nws muaj lub Hoobkas muaj zog nrog thaj chaw loj loj.
∇ Lub ntim ntau lawm tuaj yeem ncav cuag 1000 tons hauv ib hlis.
