Method of quantitative analysis of drilling fluid products

Details Method of quantitative analysis of drilling fluid products Method of quantitative analysis of drilling fluid products

G - Physics

01

N

150/17, 73/55

G01N 33/24 (2006.01) E21B 21/08 (2006.01) E21B 49/00 (2006.01) G01N 15/06 (2006.01) G01N 21/84 (2006.01) G01N 21/35 (2006.01)

Patent

CA 2027496

ABSTRACT METHOD OF QUANTITATIVE ANALYSIS OF DRILLING FLUID PRODUCTS A method of quantitative analysis of products, such as barite, bentonite or polymers, in a drilling fluid circulating in a wellbore being drilled is described. The method comprises the steps of sampling the drilling fluid, and analysing the sample to determine the density of the fluid and the weight fraction of solids in the fluid. In addition, a known weight of the sample is dried to constant weight so as to obtain the products under the form of solids, which solids are analysed by an infrared spectroscopy technique. The concentration of the products in the drilling fluid is then determined. The method can be applied to the control of the drilling operation by monitoring the quantity of products added to the drilling fluid, such as barite and polymers, or a product coming from the borehole wall or the underground formation being drilled. The invention also applies to the control of the working condition of the mud solids equipment.

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