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..., and provides reproducible results. However, variations in laser diffraction instrumentation and operating protocols in different testing facilities/laboratories can cause the PSD results to vary significantly. The problem is serious for water-based drilling fluids, but it can be even more severe for non...

... Such an instrument is very precise and can be trusted if it is filled with drilling fluid ( Le Blay et al. 2012 , Lafond et al. 2019 ). However, this last condition is not necessarily easy to obtain on a drilling rig, because of the footprint of the apparatus. Furthermore, depending on how...

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... itself. This is a complex analysis, which is one important reason why survey averaging has not been generally implemented and adopted as a standard analysis practice. Error models for individual survey tools are usually specified in terms of Instrument Performance Model (IPM) files in accordance...

... the fact that High-Resolution continuous surveys enhance TVD wellbore positioning and well engineering simulations, but more importantly it was possible to demonstrate that the standard deviations between independent surveying instruments at the same sample rate were small and well within the estimate...

... Miller et al. , 2011 , presented real time data of density of viscosity acquired during the drilling of a well. The authors pointed that on line data is an improvement on the drilling monitor process, and instrument package is an advantage when the technology is operated and maintained...

... generated from one particular instrument have been compared with data obtained from other rheometers that are operated at lower temperature and pressure. The data indicated several factors can critically affect the rheology measurements, including drilling fluid chemistry, instrument set up and test...

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.... These changes accumulate to show the well path trajectory. The use of the Gravity Azimuth technique may help solve the problems associated with magnetic interference when surveying with magnetic survey instruments. The wider application of this technology into areas with localized magnetic interference, like...

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... has led to the driller being subject to drastic changes in his working environment. The driller has been subject to continuous introduction of new equipment, controls and instruments. This has led to driller's houses (positions) being made up of "add-on" control boxes (panels) of different shapes...

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... recovery projects have placed an extra premium on these core samples being oriented to assist in fracture orientation and measurement of directional permeability and porosity. The traditional survey instrument used to measure the in-situ orientation of a core as it is being cut has been the mechanical...