Synthesis and Characterization of Substituted-Ammonium Humic Acid Fluid Loss Additive for Oil-Based Drilling Fluids

Cha Ma; Long Li; Gang Wang; Xu Bo Yuan

doi:10.4028/www.scientific.net/AMR.1004-1005.623

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1004-1005Synthesis and Characterization of...

Synthesis and Characterization of Substituted-Ammonium Humic Acid Fluid Loss Additive for Oil-Based Drilling Fluids

Abstract:

Using widely distributed and cheap lignite as starting material, humic acid was modified by octadecylamine, and a new kind of humic acid acetamide was prepared. The optimal reaction conditions of the humic acid acetamide polymer were obtained through laboratory tests as follow: the ratio of of humic acid and octadecylamine was 1:1.5, the reaction temperature was 150 °C, and the reaction time was 16~18 h. The new product was characterized by IR, and the results showed that this substituted-ammonium humic acid was successfully prepared by reacting parts of carboxyl group of humic acid with octadecylamine. HTHP filtration experiments demonstrated that the substituted-ammonium humic acid had good fluid loss properties. As a result, this substituted-ammonium humic acid polymer is an excellent fluid loss additive, and it could meet the requirement of drilling operation under extreme condition.

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Periodical:

Advanced Materials Research (Volumes 1004-1005)

Pages:

623-626

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.623

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Online since:

August 2014

Authors:

Cha Ma*, Long Li, Gang Wang, Xu Bo Yuan

Keywords:

Fluid Loss Additive, Oil-Based Drilling Fluid, Substituted-Ammonium Humic Acid, Synthesis

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