申请人:King Fahd University of Petroleum and Minerals
公开号:US20200369951A1
公开(公告)日:2020-11-26
A method of inhibiting corrosion of metal during acid stimulation of an oil and gas well, whereby the oil and gas well is treated with an acidic treatment fluid containing 10 to 28 wt. % of an acid and 0.001 to 0.045 wt. % of a corrosion inhibitor of formula I, each based on a total weight of the acidic treatment fluid,
wherein R
1
to R
5
are independently hydrogen, an optionally substituted alkyl, an optionally substituted aryl, an optionally substituted alkoxy, an optionally substituted alkanoyloxy, a carboxy, an optionally substituted alkoxycarbonyl, a hydroxy, a halo, a nitro, a cyano, or wherein two of these adjacent substituents represented by R
1
to R
5
, together form a methylene dioxy group.