«Onshore and offshore oil and gas well construction»

Evaluation of the influence of the solid phase fractional composition on the filtration characteristics of the drilling fluid

UDC: 622.24.5
DOI: 10.33285/0130-3872-2022-11(359)-33-37

Authors:

¹ St. Petersburg Mining University, St. Petersburg, Russia

Keywords: drilling flushing fluids, drilling mud, opening of productive reservoirs, filtrate penetration

Annotation:

The flushing fluid filtration is one of its most important parameters, especially when opening a productive reservoir. The filtration characteristics decrease allows decrease of the penetration zone of both solid and liquid phases into the reservoir. The study of the effect of the bridging agent fractional composition on the filtration rate allows choosing the optimal composition of the solid phase in the washing liquid. The article presents studies of the flushing liquid static filtration with the addition of various weighting agents-colmatants. The result obtained indicates that filtration intensive decrease is observed when calcium carbonate with an average particle size of up to 50 μm is introduced into the solution. Further studies should be aimed at studying the dynamic filtration rate, the possibility of "mixing" different fractions in the composition of one solution and assessing their effect on filtration.

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