Improving energy efficiency in well construction through the use of hydrocarbon-based muds and muds with improved lubricating properties

During the construction of directional wells in spatially curved sections of the barrel, large contact loads and huge resistance to the movement of the drill string during lifting can occur, which leads to increased wear of the drill pipes and high energy costs. One of the directions for increasing...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-01, Vol.1728 (1), p.12031
Main Authors: Nutskova, M V, Dvoynikov, M V, Budovskaya, M E, Sidorov, D A, Pantyukhin, A A
Format: Article
Language:English
Subjects:
Additives
Aqueous solutions
Clay
Coefficient of friction
Computational fluid dynamics
Contact loads
Drill pipe
Drilling
Drilling fluids
Drillstrings
Energy costs
Energy efficiency
Filter cake
Friction reduction
Hydrocarbons
Load resistance
Lubricating properties
Lubrication
Lubricity
Model testing
Physics
Wear
Well construction
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Summary:During the construction of directional wells in spatially curved sections of the barrel, large contact loads and huge resistance to the movement of the drill string during lifting can occur, which leads to increased wear of the drill pipes and high energy costs. One of the directions for increasing the energy efficiency of drilling such wells was the reduction of friction at the metal-metal, metal-rock, and metal-filter cake boundaries. This result can be achieved by introducing special lubricating additives or by switching to a hydrocarbon solution during drilling. The article presents the study of drilling fluids with the introduction of lubricating additives on a lubricity tester Fann EP / Lubricity Tester Model 212, a device for determining the coefficient of clay cake KTK-2, a rotary viscometer Fann 35SA, pH meter Crison GLP 21 to reduce the coefficient of friction of a pair "metal - metal" in a clay solution, which amounted to 70-75%, in an aqueous solution - up to 65%. The optimal concentration of the additive according to the study in different drilling fluids was about 1.5-2%. The results of a study of the effect of the speed and time of mixing a hydrocarbon-based solution during its preparation on the electrostability of the emulsion obtained are carried out on a BVD device, which showed a significant increase in the stability of the washing liquid to 24%, which leads to a decrease in the number of complications associated with pipe wear and a decrease torque when rotating the column.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1728/1/012031