|US 9,809,716 B2|
|Methods and systems for protecting acid-reactive substances|
|Aaron Michael Beuterbaugh, Spring, TX (US); Enrique Antonio Reyes, Tomball, TX (US); and Alyssa Lynn LaBlanc, Humble, TX (US)|
|Assigned to Halliburton Energy Services, Inc., Houston, TX (US)|
|Appl. No. 14/889,150
|Filed by Halliburton Energy Services, Inc., Houston, TX (US)|
|PCT Filed Jan. 14, 2015, PCT No. PCT/US2015/011326
§ 371(c)(1), (2) Date Nov. 5, 2015,
PCT Pub. No. WO2016/114770, PCT Pub. Date Jul. 21, 2016.
|Prior Publication US 2016/0340516 A1, Nov. 24, 2016|
|Int. Cl. C09D 5/08 (2006.01); C09K 8/03 (2006.01); C09K 8/74 (2006.01); C09K 8/54 (2006.01); E21B 43/25 (2006.01)|
|CPC C09D 5/086 (2013.01) [C09K 8/03 (2013.01); C09K 8/54 (2013.01); C09K 8/74 (2013.01); E21B 43/25 (2013.01)]||24 Claims|
|1. A method comprising:
depositing a protective coating comprising an
N-(phosphonoalkyl)iminodiacetic acid or any salt thereof onto an acid-reactive surface comprising an acid-reactive substance selected from the group consisting of a metal, a metal salt, a mineral, a carbonate mineral, and an acid-degradable polymer; and
contacting a mineral acid or an organic acid with the protective coating without substantially reacting the acid-reactive surface where the protective coating is present for a time period when the pH of the mineral acid or organic acid in contact with the protective coating is about 3 or lower.