... of these properties include the drilling fluid density or mud weight (MW) and the rheological properties i.e., plastic viscosity (PV) and yield point (YP). Changes in these properties are usually the first indication of downhole problems and thus the need to constantly monitor them cannot be overemphasized. While...

... Calculation of Drilling Mud Density Window and Open-Hole Wellbore Extension Limit for Extended Reach Wells Zhiyu Liu, Fujian Zhou, Xiaoxu Feng, Zhao Yang, Fan Fan The Unconventional Natural Gas Institute, China University of Petroleum, Beijing, China Copyright 2018 ARMA, American Rock Mechanics Association...

... (pressure coefficient method) through investigation and onsite application, therefore, we can determine the safety window of mud density in shallow. Additionally, the riser setting depth is given on the basis of safe density window; Furthermore, we seek out the gradient model of the multi gradient drilling...

... Abstract An artificial neural networks (ANN) model has been developed to provide accurate predictions of mud density as a function of mud type, pressure and temperature. Available experimental measurements of water-base and oil-base drilling fluids at pressures ranging from 0 to 1400 psi...

...OFFSHORE TECHNOLOGY CONFEREJ~rCE 6200 North Cen"Eral Expressway Dallas, Texas 75206 THIS IS A PREPRINT SUBJECT TO- CORRECTION R aTe 2 I 34 A Mud Density Analysis Operations In By for Floating Drilling Wi I dcat Areas Donald B. Bolt, Jr., Continental Oil Co., and E. Paul Bercegeay, U...

... Abstract There is a need to accurately measure the density of drilling mud and well flow rate at downhole locations in the wellbore. Mud density can be determined by measuring the differential pressure between two locations in the well. The most common manner of measuring flow rate is also...

..., along with nitrogen, was used to lighten clean-out fluids to a fluid density that allows circulation of these wells. The use of nitrogen, while necessary, can lead to variable fluid quality, increase clean-out times, add expense, and ultimately reduce time-to-market for these wells. Lightweight mud...

...-head equal to the hydrostatic pressure of the seawater at the seafloor. Hydrostatic control of abnormal formation pressure could still -be maintained by a weighted mud system that is not gas cut below the seafloor. Such a dual density mud system could reduce drilling costs by reducing the number...

... challenges to the design and operation of coil tubing in this well. Challenging factors included: Use of high weight and yield strength, 15 ksi coil tubing, high mud density of 19.7 ppg, high pumping pressures, deep well, ID restriction 3 ½ in DP with 2 in ID, active well, deviated well of around 57 degrees...

...: mud/gas mass ratio, mud flow rate, and mud density. Measurements will be multiplexed along a single cable and interfaced to the computer-display system of the data recording system. The purpose of this paper is to discuss the theory of operation, the engineering factors to be considered...

... these challenges. This paper focuses on the challenges and solutions to providing meaningful gamma-gamma density logs. Formate muds affect density logs in three ways. First, potassium in the mud generates gamma rays that increase count rates, but that effect is small. Second, gamma-scattering and gamma-absorption...