Cov khoom ntawm kev lag luam polyacrylamide rau thickening, flocculation thiab rheological kev cai ntawm cov kua ua rau nws ua lub luag haujlwm tseem ceeb hauv kev tsim roj.Nws yog dav siv nyob rau hauv drilling, dej plugging, acidizing dej, fracturing, zoo ntxuav, zoo tiav, luag txo, anti-scale thiab roj hloov.
Feem ntau, kev siv polyacrylamide yog los txhim kho cov roj rov qab.Tshwj xeeb, ntau cov roj av tau nkag mus rau theem nrab thiab qib siab ntau lawm, qhov tob ntawm lub reservoir feem ntau yog ntau tshaj 1000m, thiab qee qhov ntawm qhov tob ntawm lub reservoir yog mus txog 7000m.Lub heterogeneity ntawm kev tsim thiab offshore roj teb tau muab rau pem hauv ntej ntau nruj tej yam kev mob rau cov roj rov ua hauj lwm.
Ntawm lawv, qhov sib sib zog nqus roj ntau lawm thiab offshore roj ntau lawm kuj tau muab cov kev cai tshiab rau PAM, xav kom nws tiv thaiv shear, siab kub (siab tshaj 100 ° C rau 200 ° C), calcium ion, magnesium ion kuj, seawater degradation kuj, txij li xyoo 1980s, Kev vam meej tau ua tiav hauv kev tshawb fawb, kev npaj, kev tshawb fawb thiab kev tsim ntau yam ntawm PAM haum rau cov roj rov qab mus rau txawv teb chaws.
Muaj polyacrylamide yog siv los ua drilling kua adjuster thiab fracturing kua additive:
Ib nrab hydrolyzed polyacrylamide (HPAM), uas yog muab los ntawm hydrolysis ntawm polyacrylamide, feem ntau yog siv los ua ib tug drilling kua hloov.Nws lub luag haujlwm yog tswj cov rheology ntawm cov dej drilling, nqa cov txiav, lubricate lub laum me ntsis, txo cov kua dej, thiab lwm yam. Cov dej drilling modulated nrog polyacrylamide muaj qhov tshwj xeeb tsis tshua muaj zog, uas tuaj yeem txo qhov siab thiab txhaws ntawm cov roj thiab roj reservoir, yooj yim mus nrhiav cov roj thiab roj reservoir, thiab yog haum rau drilling, drilling ceev yog 19% siab tshaj cov pa drilling kua, thiab hais txog 45% siab tshaj tus neeg kho tshuab drilling tus nqi.
Tsis tas li ntawd, nws tuaj yeem txo qhov kev sib tsoo ntawm qhov sib tsoo, txo cov khoom siv, thiab tiv thaiv kev poob thiab tawg.Fracturing thev naus laus zis yog qhov kev ntsuas tseem ceeb rau kev tsim cov txaj nruj hauv cov roj av.Polyacrylamide crosslinked fracturing kua yog dav siv vim nws cov viscosity siab, tsis tshua muaj kev sib txhuam, zoo tshem tawm cov xuab zeb muaj peev xwm, me me pom, zoo viscosity stability, me ntsis residue, dav mov, yooj yim npaj thiab tsawg tus nqi.
Hauv kev kho kom tawg thiab acidizing, polyacrylamide tau npaj rau hauv cov tshuaj aqueous nrog cov concentration ntawm 0.01% mus rau 4% thiab tso rau hauv av tsim kom tawg ntawm kev tsim.Cov tshuaj polyacrylamide muaj kev ua haujlwm ntawm thickening thiab nqa cov xuab zeb thiab txo qhov poob ntawm cov kua fracturing.Tsis tas li ntawd, polyacrylamide muaj cov nyhuv ntawm kev txo qis, kom lub siab hloov pauv tuaj yeem txo qis.
Post lub sij hawm: Sep-27-2023
