Application and development of polyhydroxy scale inhibitor PTMAS
Cheng Zhongfu1, Yang Zuguo1, Cao Chang1, Luo Xiao2
1.Northwest Oilfield Company Engineering Technology Research Institute,SINOPEC,Urumqi 830013; 2.School of Oil and Nature Gas Engineering,Southwest Petroleum University,Chengdu 610500
Abstract: In order to solve the problem of scale in the process of water flooding development in Tahe oilfield due to incompatibility of formation water.A polyhydroxy polymer scale inhibitor trihydroxyethyl allyl ammonium bromide/maleic anhydride/2-acrylamido-2-methylpropanesulfonic acid (PTMAS) was prepared vis aqueous solution by using trihydroxyethyl allyl ammonium bromide(THAAB),maleic anhydride (MA) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) as reaction monomers.The product was characterized by FT-IR and gel chromatography.The results showed that the molecular structure was in accordance with the expected design and the molecular weight was moderate.The molecular weight was between 2×104～5×104,and was suitable as a polymer scale inhibitor.Thermogravimetric analysis showed that the temperature resistance was strong,and the mass retention rate was as high as 80% before 250℃,and there was no heavy weight loss occurred.In the calcium carbonate scale inhibition experiment,PTMAS dosage was not less than 25mg/L,temperature was 20～80℃,pH value does not exceed 10,effective scale inhibition time was not less than 18h,and the scale inhibition rate can be up to 92%,indicating the extremely broad application of PTMAS.The results of laboratory experiments showed that there was a good scale inhibition effect on the precipitation of calcium sulfate,barium sulfate and strontium sulfate scale.
程仲富, 杨祖国, 曹畅, 罗霄. 多羟基阻垢剂PTMAS的研制与应用[J]. 化工新型材料, 2018, 46(8): 285-289.
Cheng Zhongfu, Yang Zuguo, Cao Chang, Luo Xiao. Application and development of polyhydroxy scale inhibitor PTMAS. New Chemical Materials, 2018, 46(8): 285-289.
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2018, Vol. 46 
