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酸性气藏泡沫排水复合缓蚀起泡剂研究
引用本文:蒋泽银,李伟,陈文,陈楠,苏福燕,刘爽. 酸性气藏泡沫排水复合缓蚀起泡剂研究[J]. 石油与天然气化工, 2015, 44(2): 70-72, 90
作者姓名:蒋泽银  李伟  陈文  陈楠  苏福燕  刘爽
作者单位:中国石油西南油气田公司天然气研究院
摘    要:酸性气藏在酸性气体及地层水的共同作用下,对油套管有较大的腐蚀。在对酸性气藏进行泡排时,需要使用缓蚀剂进行腐蚀防护,而起泡剂和缓蚀剂之间存在配伍性的问题。针对川渝酸性气藏气水质特点,通过优选适用于矿化度为0~293g/L的起泡组分、配伍的水溶性缓蚀组分以及起泡组分和缓蚀组分的复配和性能评价,研制出复合缓蚀起泡剂CT5-7F。该剂在矿化度为0~293g/L的地层水中、质量浓度为1.5g/L时,起泡能力大于185mm、3min泡高大于165mm、15min携液量大于152mL、腐蚀速率低于0.076mm/a、缓蚀率大于80%,可用于酸性气藏的泡排和防腐。

关 键 词:酸性气藏  泡沫排水  缓蚀起泡剂  腐蚀
收稿时间:2014-06-11

Research of corrosion inhibition and foaming compound agent for acidic gas reservoir
Jiang Zeyin,Li Wei,Chen Wen,Chen Nan,Su Fuyan and Liu Shuang. Research of corrosion inhibition and foaming compound agent for acidic gas reservoir[J]. Chemical Engineering of Oil and Gas, 2015, 44(2): 70-72, 90
Authors:Jiang Zeyin  Li Wei  Chen Wen  Chen Nan  Su Fuyan  Liu Shuang
Affiliation:Jiang Zeyin;Li Wei;Chen Wen;Chen Nan;Su Fuyan;Liu Shuang;Research Institute of Natural Gas Technology,PetroChina Southwest Oil and Gasfield Company;
Abstract:Corrosion rates of tubing and casing could be excessive in acidic gas reservoir for the interaction of the acid gas and formation water. Therefore, wells being treated with foaming agent should also be treated with an appropriate corrosion inhibitor simultaneously. However, mixing corrosion inhibitor and foaming agent would lead to chemical incompatibility. Based on the characteristics of acidic gas reservoir in Sichuan and Chongqing, through the optimization of foaming agent applying to salinity range of 0 ~ 293 g/L and water soluble corrosion inhibitor, with the distribution and performance evaluation of them, CT5-7F has been developed. This compound agent could be used in the formation water with salinity from 0 to 293 g/L, When the dosage is 1.5 g/L, producing foam ability is more than 185 mm, foam stability is more than 165 mm, liquid-carrying volume is more than 152 mL/15 min, corrosion rate is lower than 0.076 mm/a and inhibition rate is more than 80%, can be used in acidic nature gas field.
Keywords:acidic gas reservoir   foam-dewatering   corrosion inhibition and foaming compound agent   corrosion
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