Lub luag haujlwm ntawm cov polyacrylamide hauv kev lag luam hauv kev rho tawm roj

Cov khoom ntawm cov polyacrylamide kev lag luam rau kev ua kom tuab, flocculation thiab rheological kev tswj hwm ntawm cov kua ua rau nws ua lub luag haujlwm tseem ceeb hauv kev tsim roj. Nws yog dav siv rau hauv kev khawb, kev txhaws dej, acidizing dej, fracturing, ntxuav qhov dej, ua kom tiav qhov dej, txo qhov rub, tiv thaiv cov nplai thiab hloov roj.

Feem ntau, kev siv polyacrylamide yog los txhim kho qhov rov qab los ntawm roj. Tshwj xeeb, ntau lub chaw roj tau nkag mus rau qhov kev tsim khoom theem ob thiab theem peb, qhov tob ntawm lub pas dej feem ntau ntau dua 1000m, thiab qee qhov tob ntawm lub pas dej yog txog li 7000m. Qhov sib txawv ntawm kev tsim thiab cov chaw roj hauv hiav txwv tau muab cov xwm txheej nruj dua rau kev ua haujlwm rov qab los ntawm roj.

Ntawm lawv, kev tsim roj tob thiab kev tsim roj hauv hiav txwv kuj tau muab cov kev cai tshiab rau PAM, uas yuav tsum tau nws tiv taus shear, kub siab (saum toj no 100 ° C txog 200 ° C), calcium ion, magnesium ion tsis kam, dej hiav txwv tsis kam, txij li xyoo 1980, Kev nce qib zoo tau ua tiav hauv kev tshawb fawb yooj yim, kev npaj, kev tshawb fawb thov thiab kev tsim ntau yam ntawm PAM uas tsim nyog rau kev rov qab roj txawv teb chaws.

Cov polyacrylamide muaj kev lag luam yog siv los ua cov kua dej drilling adjuster thiab fracturing kua additive:

Cov polyacrylamide uas tau hydrolyzed ib feem (HPAM), uas yog los ntawm kev hydrolysis ntawm polyacrylamide, feem ntau siv ua cov kua drilling modifier. Nws lub luag haujlwm yog los tswj cov rheology ntawm cov kua drilling, nqa cov txiav, lubricate lub laum ntsis, txo cov kua poob, thiab lwm yam. Cov kua drilling modulated nrog polyacrylamide muaj qhov hnyav tshwj xeeb qis, uas tuaj yeem txo qhov siab thiab kev thaiv ntawm cov roj thiab roj reservoir, yooj yim nrhiav cov roj thiab roj reservoir, thiab yog qhov zoo rau drilling, drilling ceev yog 19% siab dua li cov kua drilling ib txwm muaj, thiab kwv yees li 45% siab dua li cov tshuab drilling ceev.

Ntxiv mus, nws tuaj yeem txo qhov xwm txheej ntawm kev khawb av uas daig, txo cov khoom siv hnav, thiab tiv thaiv kev poob thiab kev tawg. Kev siv tshuab tawg yog ib qho kev ntsuas tseem ceeb rau kev txhim kho cov txaj nqaim hauv cov chaw roj. Polyacrylamide crosslinked fracturing fluid yog siv dav vim nws cov viscosity siab, kev sib txhuam tsawg, muaj peev xwm zoo ntawm cov xuab zeb suspended, lim me ntsis, ruaj khov viscosity zoo, cov khoom seem me me, muaj ntau yam khoom, yooj yim npaj thiab tus nqi qis.

Hauv kev kho mob tawg thiab acidizing, polyacrylamide tau npaj rau hauv cov kua dej nrog qhov concentration ntawm 0.01% txog 4% thiab pumped rau hauv av tsim kom tawg qhov tsim. Cov tshuaj polyacrylamide kev lag luam muaj lub luag haujlwm ntawm thickening thiab nqa xuab zeb thiab txo qhov poob ntawm cov kua dej tawg. Tsis tas li ntawd, polyacrylamide muaj cov nyhuv ntawm kev txo qhov tsis kam, yog li qhov kev hloov pauv siab poob tuaj yeem txo qis.