Methodological approaches to determining requirements for granulometric composition and content of arch-forming particles in drilling muds for primary opening of a productive formation
UDC: 622.24.062
DOI: -
Authors:
KAZAKOV DMITRY A.
1,
KHVOSHCHIN PAVEL A.
1,
NEKRASOVA IRINA L.
1,
GARSHINA OLGA V.
1,
PREDEIN ANDREY A.
1,
KHARIN SERGEY S.
1
1 LUKOIL-Engineering, Moscow, Russia
Keywords: drilling mud, productive formation, arch-forming particles, granulometric compositions, reverse colmatation, filter cake
Annotation:
To reduce the depth of drilling fluid penetration into the productive formation, it is important to optimize the particle size distribution of the dispersed solid phase (arch-forming particles) to form a low-permeability filter cake. The combination of optimal sizes of arch-forming particles and their content in the solution allows for effective reverse colmatation of the pore space of reservoir rocks at the stage of primary opening. There is no consensus among researchers regarding the optimal choice of fractional composition and concentration of arch-forming particles. The authors of the article present the results of a comparative analysis of various methodological approaches to choosing the particle size distribution of arch-forming particles in drilling fluids for the primary opening of a productive formation. The results of filtration studies of drilling fluids to determine the required concentration of arch-forming particles for the most effective reverse colmatation of porous media of varying permeability are presented as well. Recommendations are given for regulating the particle size distribution and content of arch-forming particles in drilling fluids for the primary opening of a productive formation.
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