Measurement of the Plastic Viscosity and Yield Point of Drilling Fluids

Abstract

Rheological parameters of drilling fluids, such as yield point and plastic viscosity, are required to determine the hydrodynamic components of pressure at various points in the circulation system during technological operations. It is essential to ensure a simple and accurate measurement of these parameters in the construction of oil and gas wells, however, existing methods are relatively expensive and the results obtained can be subjective. This article describes a newly developed method for measuring the plastic viscosity and yield point of the drilling fluid using a Marsh funnel, which will greatly simplify the procedure for determining the rheological parameters of drilling fluids and allow them to be measured directly on drilling rigs. When the geometrical parameters of the funnel are determined, the true viscosity parameters are calculated using simple formulas. The Marsh funnel is traditionally used on the drilling rig to measure the relative viscosity of the drilling fluid and is an inexpensive and simple device. The article provides comparative studies with standard methods for determining the rheological parameters of the drilling fluid. According to the results of the test method, comparisons are made of pressure losses in the circulation system of the drilling fluid on drilling rigs.

Nanofluid Formulations Based on Two-Dimensional Nanoparticles, Their Performance, and Potential Application as Water-Based Drilling Fluids

“… 85 On the other hand, YP and GS refer to the attraction force between particles. YP is also defined as yield stress (YS), which is the minimum shear stress required to initiate flow of a fluid and provides unique information about the capacity to carry drilling cuttings in suspension during the circulation in the wellbore, 86 while GS is related to the capability to solidify. 87 Therefore, GS is associated with the thixotropy of the DFs formulation.…”

Utilization of Eco-Friendly Waste Generated Nanomaterials in Water-Based Drilling Fluids; State of the Art Review

“…It is the ability to carry drill cuttings in suspension while circulating in the wellbore and out of the annulus. Hence, drilling problems such as differential sticking can be prevented [ 27 ]. According to Maiti et al, as the solid additive particles reduce in size, the YP increases [ 28 ].…”

Investigating Nigeria Local Clay for its Marsh Funnel Viscosity and Gel Strength: A Study of Irhodo Bentonite

“…Generally, the marsh funnel device required little equipment, easy or simple to operate and quick or fast in measurement of drilling fluid viscosity [Chandan, 2013, Fann Instrument Company, 2013, Friedrich, 1941Delikesheva, et al, 2020] The funnel is made of break-resistant plastic and has a permanent outlet or orifice with quantify diameter (Friedrich, 1941) and have two sectional design; cone and tube. The marsh funnel simple measure the viscosity of drilling mud by taking record of time it flow from the cone and through the orifice tube (1500ml) into a graduated cup capacity of 946 cubic centimeters and recorded in seconds as a measure of viscosity of mud.…”