Estimation of the impact of bottomhole zone clogging on well productivity
UDC: 622.244.442.063.2:678.7
DOI: 10.33285/0207-2351-2023-2(650)-44-51
Authors:
SULTANOVA ARZU V.1,
MAMEDOV RAMIL' M.1
1 Azerbaijan State University of Oil and Industry, Baku, Azerbaijan
Keywords: clogging, flocculation, bottomhole zone, permeability, contamination, dispersion medium, sand plug
Annotation:
Bottom-hole contamination (clogging) significantly affects the productivity of wells, the permeability of a formation, determined by the results of hydrodynamic studies. At the same time, clogging is understood as contamination of the bottomhole zone by drilling fluid when opening the productive formation, deterioration of the properties of the bottomhole zone during cementing, perforation of the productive interval, swelling of clays, etc.
The article presents the results of laboratory and field studies of clogging influence on the productivity of wells when opening formations with different mineralogical and formation properties as well provides an analytical estimation of this effect both on vertical and horizontal wells.
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