Abstract
Summary The aim of the work is to assess the effect of drilling fluid mineralization on lithological and petrophysical rock characteristics. The object of research is the silt-sandy rocks of the Pyakyakhinsky deposit, characterized by polymineral clay-zeolite cement. The assessment is based on a comprehensive interpretation of the results of special filtration, nuclear magnetic, lithological studies. As a result, the ambiguous nature of the influence of the degree of mineralization of the drilling fluid on the petrophysical parameters, which is controlled by the lithological features of the rocks, namely, the amount and composition of polymineral cement, was established. Under the influence of the filtrate, clay cement (mainly in fresh systems of drilling fluids) in the rock has a greater effect on the change in the cross-sectional area of the filtration channels (rock permeability decreases), and zeolites (mainly under the influence of mineralized drilling fluid systems) on the decrease in effective porosity (which to a lesser extent affects the decrease in core permeability after exposure to the solution).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
