Newpark Resources. has filed a patent for a process involving a treatment fluid with formic acid, salt of lactic acid, and salt of gluconic acid to prevent formate crystal formation in wellbores. The mixture allows formic acid to react with acid soluble material in the underground formation, generating soluble calcium salts. GlobalData’s report on Newpark Resources gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Newpark Resources, Treatment progress monitoring was a key innovation area identified from patents. Newpark Resources's grant share as of January 2024 was 52%. Grant share is based on the ratio of number of grants to total number of patents.
A patent application (Publication Number: US20240026211A1) discloses a process for acidizing a wellbore using a treatment fluid containing formic acid or a formic acid precursor, along with suitable salts of lactic acid and gluconic acid. The treatment fluid is introduced into the underground formation, where the formic acid reacts with acid-soluble material to generate soluble calcium salts. The inclusion of salts of lactic acid and gluconic acid in the treatment fluid helps reduce the formation of calcium crystals, preventing the deposition of calcium formate crystals that would otherwise occur.
Furthermore, the process involves providing a mixture to the wellbore with formic acid or a formic acid precursor, a salt of lactic acid, and a salt of gluconic acid. This mixture, when introduced into the underground formation, prevents or reduces the formation of formate crystals compared to mixtures without the salts of lactic acid and gluconic acid. The concentration of these salts is crucial, with a minimum concentration of 0.6 M or higher recommended to achieve the desired results. Additionally, the treatment fluid or mixture does not contain an acidic buffering agent, is not acidic, and has a pH of at least 4 or 6, while also excluding alkyl glucoside surfactants. These innovative processes aim to enhance production from the formation while effectively managing the reaction with acid-soluble materials in the underground formation.
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