RESEARCH OF BIOPOLYMER DRILLING FLUIDS BASED ON HIGHLY MINERALIZED RESERVOIR WATERS OF EASTERN SIBERIA

Известия Томского политехнического университета: Инжиниринг георесурсов

Nikolay A. Buglov¹  Elena V. Averkina¹  Aleksandr O. Ustyuzhanin¹  Anastasia S. Krasinskaya² 

[1] Irkutsk National Research Technical University;NK-Service;

关键词: formation water;    hydromineral raw materials;    mineralization;    drilling mud;    saline drilling mud;    yarakta field;    drilling fluid;    eastern siberia;   

DOI  :  10.18799/24131830/2021/3/3116

来源: DOAJ

【 摘 要 】

The relevance of the research is caused by the need for the beneficial use of formation water, produced simultaneously with oil, as the basis for preparing highly mineralized drilling fluids when drilling in fields in Eastern Siberia. The main aim of the research is to study and propose polymer systems of drilling fluids based on formation waters of Eastern Siberia. Objects: formation water of the Danilovskoe and Ichedinskoe oil and gas condensate fields, formulations and components of modern polymer drilling fluid systems. Methods: instrumental methods for determining drilling muds parameters according to State Standard 33213-2014 and guidance document RD 39-00147001-773-2004 (filtration and rheological properties); description of samples, comparison of characteristics with similar solutions. Results. The authors have studied and described the physicochemical characteristics of formation water; prepared polymer systems of drilling fluids based on pure and diluted formation water; carried out comparative studies of the prepared solutions with the solutions currently used in the construction of wells in Eastern Siberia. Descriptive characteristics of drilling solutions and theories on the interaction of the used reagents with formation water are presented. It was found that due to the high content of calcium and magnesium chlorides in the formation water, the process of dissolving polymer reagents can be suspended, which leads to a complete loss of all the viscosity, filtration and rheological properties of drilling fluids; a sufficient amount of magnesium in the produced water (≥10 g/l) ensures that hydrogel-magnesium drilling fluids obtaining; the use of associated formation water will reduce material and time costs associated with saturation of the solution on the surface, at the same time prevent cavern formation and to a large extent prevent the solubility of saline rocks.

【 授权许可】

Unknown