Indima ye-polyacrylamide yezimboni ekukhishweni kwamafutha

Izakhiwo ze-polyacrylamide yezimboni zokuqinisa, ukugoqa kanye nokulawula uketshezi oluphuma emathunjini kwenza idlale indima ebalulekile ekukhiqizweni kwamafutha. Isetshenziswa kabanzi ekubholeni, ekuvaleni amanzi, ekwenzeni amanzi abe ne-asidi, ekuqhekekeni, ekuhlanzeni imithombo, ekuqedeni imithombo, ekunciphiseni ukudonswa, ekulweni nobukhulu kanye nasekufudukisweni kwamafutha.

Ngokuvamile, ukusetshenziswa kwe-polyacrylamide kuthuthukisa izinga lokubuyisa uwoyela. Ikakhulukazi, amasimu amaningi kawoyela angene ekukhiqizweni kwesibili nokwesithathu, ukujula kwedamu ngokuvamile kungaphezu kwamamitha ayi-1000, kanti okunye ukujula kwedamu kufinyelela kumamitha ayi-7000. Ukungafani kokwakheka kanye namasimu kawoyela asogwini lolwandle kubeke izimo eziqinile zemisebenzi yokubuyisa uwoyela.

Phakathi kwazo, ukukhiqizwa kwamafutha ajulile kanye nokukhiqizwa kwamafutha asogwini lolwandle ngokufanayo kubeke phambili izidingo ezintsha ze-PAM, ezidinga ukuthi imelane nokunqunywa, izinga lokushisa eliphezulu (ngaphezu kuka-100 ° C kuya ku-200 ° C), i-calcium ion, ukumelana ne-magnesium ion, ukumelana nokuwohloka kwamanzi olwandle, kusukela ngawo-1980. Intuthuko enkulu yenziwe ocwaningweni oluyisisekelo, ekulungiseleleni, ocwaningweni lokusetshenziswa kanye nokuthuthukiswa kwezinhlobonhlobo ze-PAM ezifanele ukubuyiselwa kwamafutha kwamanye amazwe.

I-polyacrylamide yezimboni isetshenziswa njenge-adjuster yokugaya uketshezi kanye ne-fracturing fluid additive:

I-polyacrylamide (HPAM) e-hydrolyzed ngokwengxenye, etholakala ku-hydrolysis ye-polyacrylamide, ivame ukusetshenziswa njengokushintsha uketshezi lokubhoboza. Indima yayo ukulawula i-rheology yoketshezi lokubhoboza, ukuthwala izingcezu, ukugcoba i-drill bit, ukunciphisa ukulahleka koketshezi, njll. Uketshezi lokubhoboza oluhlelwe nge-polyacrylamide lunamandla aphansi adonsela phansi, okunganciphisa ingcindezi nokuvaleka echibini likawoyela negesi, kulula ukulithola echibini likawoyela negesi, futhi luhambisana nokubhoboza, isivinini sokubhoboza siphezulu ngo-19% kunoketshezi lokubhoboza oluvamile, futhi cishe siphakeme ngo-45% kunesilinganiso sokubhoboza semishini.

Ngaphezu kwalokho, kunganciphisa kakhulu izingozi zokubhoboza ezibambekile, kunciphise ukuguguleka kwemishini, futhi kuvimbele ukulahleka nokuwa. Ubuchwepheshe bokuqhekeka buyindlela ebalulekile yokukhuthaza ukwakha imibhede eqinile ezindaweni zikawoyela. Uketshezi lokuqhekeka oluxhunywe nge-Polyacrylamide lusetshenziswa kabanzi ngenxa yokuxinana kwalo okuphezulu, ukungqubuzana okuphansi, amandla amahle esihlabathi esilengayo, ukuhlunga okuncane, ukuzinza okuhle kokuxinana, insalela encane, ukutholakala kabanzi, ukulungiselela okulula kanye nezindleko eziphansi.

Ekwelashweni kokuqhekeka nokufaka i-asidi, i-polyacrylamide ilungiswa ibe yisisombululo samanzi esinokugxila okungu-0.01% kuya ku-4% bese iphonswa ekwakhekeni okungaphansi komhlaba ukuze iqhekeze ukwakheka. Isixazululo se-polyacrylamide yezimboni sinomsebenzi wokuqinisa nokuthwala isihlabathi nokunciphisa ukulahleka koketshezi lokuqhekeka. Ngaphezu kwalokho, i-polyacrylamide inomphumela wokunciphisa ukumelana, ukuze ukulahlekelwa kokudluliselwa kwengcindezi kuncishiswe.