Open AccessStudy on rheological properties of clayless drilling fluids influenced by fractional composition of carbonate weighting agents
Author(s) -
E. L. Leushevaand V. A. Morenov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/921/1/012013
Subject(s) - rheology , drilling fluid , carbonate , weighting , drilling , petroleum engineering , geology , biopolymer , mineralogy , materials science , composite material , polymer , metallurgy , medicine , radiology
Study of the influence of weighting-bridging agents on technological parameters of drilling fluids is an important aspect in the development of washing fluid compositions, especially when drilling-in productive formations. At selection of weighting agents, it is often assumed that these substances are inert and do not affect the structural and rheological parameters of the fluid, but only increase the density (due to higher specific gravity) and lower the filtration parameters (due to an increase in the solid phase content). Paper presents experimental study to assess the effect of the fractional composition of carbonate weighting agents on structural and rheological parameters of a biopolymer drilling fluid used to drill-in a reservoir. Carbonate substances with an average particle size of 5 to 150 microns were used as weighting-bridging agents. Based on the data obtained, dependences of the main structural and rheological parameters of the drilling fluid on the size of the weighting-bridging agent’s fraction are revealed.