Synthesis of Carboxymethyl Starch for increasing drilling mud quality in drilling oil and gas wells

20th International Scientific Symposium of Students, Postgraduates and Young Scientists on "Problems of Geology and Subsurface Development"

Minaev, K.M.^1 ; Martynova, D.O.^2 ; Zakharov, A.S.^1 ; Sagitov, R.R.^1 ; Ber, A.A.^1 ; Ulyanova, O.S.^1

Tomsk Polytechnic University, 30 Lenina prospect, Tomsk

634050, Russia^1

Tomsk State University, 36 Lenina prospect, Tomsk

634050, Russia^2

关键词: Carboxymethyl starch;    Carboxymethylation;    Degree of substitution;    Fluid loss;    Main parameters;    Oil and gas well;    Physicochemical property;    Rheological characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/43/1/012071/pdf
DOI  :  10.1088/1755-1315/43/1/012071

来源: IOP

【 摘 要 】

This paper describes the impact of carboxymethyl starch preparation conditions on physicochemical properties of polysaccharide reagent, widely used as fluid loss reducing agent in drilling mud. Variation of the main parameters of carboxymethylation is researched in the experiment. The following conditions such as temperature and reaction time, amount of water, as well as ratio of NaOH to monochloracetic acid define the characteristics of carboxymethyl starch. The degree of substitution is defined for polysaccharides, as well as the characteristics of samples have been studied by infrared spectroscopy. Rheological characteristics and fluid loss indicator have been investigated to study the impact of the reagents on drilling mud quality.