The theoretical study of carbonate matrix acidizing efficiency

The paper is devoted to the hydrochloric acid treatments effectiveness evaluation theoretical aspects in carbonate reservoirs. The relevance of research is due to an increase in the share of residual reserves and oil production from carbonate reservoirs and the necessity to increase the hydrochloric...

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Bibliographic Details
Main Authors: Yakubov, Ravil N., Gimaltdinov, Ilyas K.
Format: Conference Proceeding
Language:English
Subjects:
Dissolution
Efficiency
Hydrochloric acid
Process parameters
Reservoirs
Stimulation
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Summary:The paper is devoted to the hydrochloric acid treatments effectiveness evaluation theoretical aspects in carbonate reservoirs. The relevance of research is due to an increase in the share of residual reserves and oil production from carbonate reservoirs and the necessity to increase the hydrochloric acid treatments technological efficiency to stimulate oil flow to well bottomhole. The aim of the research is to increase the efficiency of hydrochloric acid well stimulation in a carbonate reservoirs based on identifying the rock dissolution optimal profile in the bottomhole formation zone and adjustment the process technological parameters. On the basis of statistical and mathematical modeling, multivariate calculations of the bottomhole formation zone rock dissolution profiles were performed, which made it possible to identify the optimal options for the acid solution dynamic placement in the formation. The dependences of the skin factor and the productivity index for various acid volumes (per unit of formation thickness) and dissolution profiles were obtained. Revealed significant variations in the technological efficiency of acid treatment depending on the process parameters substantiated the necessity for the correct choice of technological parameters of the well stimulation operation to achieve maximum efficiency.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0093302