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Showing 1 to 18 of 18 for “"Drilling fluids"”.
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Drilling fluids filtration and impact on formation damage.
… performance based on the total skin factor after drilling operations are: production logging, flow measurement and well test data. The total skin factor is used in the flow equations to estimate the production rate in wells that are affected by formation damage in order to optimise the flow system …
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Wellbore Strengthening by Means of Nanoparticle-Based Drilling Fluids
… Application of wellbore strengthening in the drilling industry enable safe drilling by preventing mud losses, drilling in narrow mud windows, accessing reserves in depleted reservoirs, and also has the potential to reduce the number of casing runs. Until now, the predominant wellbore …
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Admicellar Polymerization Of Calcium Carbonate And Its Performance In Drilling Fluids
… content admicellar polymerized CaCO 3 in drilling fluids shoincrease in mud viscosity and yield point with improved fluid loss control.
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Water-based drilling fluids for high temperature and dispersible shale formation applications
The negative impacts of drilling fluids, most especially oil-based muds, on the environment are a source of concern to regulators and governments all over the world. Consequently, regulations on the discharge and disposal of drilling fluids worldwide have become stricter. The recent research in …
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Resistivity Characterization and Modeling of Synthetic Based Drilling Fluids and Corrosion Detection in Steel
With deeper drilling concern (high in situ pressure and temperature) and increased environmental concerns, there is interest in developing synthetic based drilling fluids. In this study, synthetic based drilling fluids (SBF) with very high insulation properties were developed for high pressure and …
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The effect of oil-and-gas well drilling fluids on shallow groundwater in western North Dakota
… of an oil-and-gas well in North Dakota the drilling fluid is buried in the reserve pit at the site. Reclamation of the drill site is expedited by digging a series of trenches which radiate out from the reserve pit, The majority of buried drilling fluid is ultimately contained within these …
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Contaminant migration of oil-and-gas drilling fluids within the glaciated sediments of north-central North Dakota
… reclamation in North Dakota is to bury the drilling muds in shallow trenches near the borehole. These muds are saltwater based (between 100,000 and 300,000 mg/L of NaCl) and can contain high concentrations of chromium, lead, and other. toxic trace metals. </p><p>Two reclaimed oil and gas …
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Helical flow of non-Newtonian fluids, with reference to drilling fluid flow.
… desire to understand better the complex flow of drilling fluids in oil wells. After an initial discussion of the flow and its complexities, mathematical models are considered, and a 'helical flow' model adopted as being a reasonable approximation to the flow which may be solved in practice. …
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The effect of testing conditions on lost circulation materials' performance in simulated fractures
… circulation (LOC) problems increase costs of drilling significantly. It is not only the cost of the drilling fluid that is lost into the formation but also the costs of subsequent problems that can be higher than the cost of the drilling fluids. LOC also possibly leads to a serious risk of …
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Increasing the temperature stability of environmentally friendly drilling and completion fluids based on organic brine.
… and extend their temperature capabilities as drilling fluids. However, as HPHT drilling continues to move into more harsh environments with expected bottom-hole temperatures of over 300°C; further research is required to improve the temperature ceiling of eco-friendly formate drilling fluids. …
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Strength of drilling fluid filter cakes
… techniques are commonly used to prevent drilling fluid losses. Current methods generally require that particles are added to the drilling fluid to hinder fracture propagation, which creates practical difficulties as the particles are often relatively large. An alternative approach is the …
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Program for Predicting the Densities and Pressure of Invert Elviulsion Muds Under Static Well Conditions
… on different invert emulsion muds and base fluids. A compositional material balance model was used to predict the densities of synthetic and oil based muds at different temperatures and pressures under static hole conditions. A program for predicting the densities of different synthetic and …
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Mathematical Modeling of Fluid Spills in Hydraulically Fractured Well Sites
<p>Improved drilling technology and favorable energy prices have contributed to the rapid pace at which the exploitation of unconventional natural gas is taking place across the United States. As a natural gas well is being drilled, reserve pits are constructed to hold the drilling fluids and other …
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Effects of filtration process variables on filter cake properties and formation
Drilling mud is fundamental during the drilling process because it performs multiple tasks which make the perforation of the rock possible. For this reason, lost circulation, the loss of drilling mud through fractures in the formation, represents a serious issue in the oil and gas industry, since …
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Abrasion-corrosion of downhole drill tool components
… Teddington). To mimic exposure to alkaline drilling fluids for long durations, selected samples were exposed to pH 11 NaOH solution / drilling fluid for 168 h prior to wear testing. Screening of candidate materials on the basis of their wear-corrosion performance using micro-abrasion tester …
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Bulk and micro-scale rheology of an aging, yield stress fluid, with application to magneto-responsive systems
… important materials as plastics, paints, oil-drilling fluids, and consumer products. Rheology is also powerful from a scientific perspective because of the correlation between rheological properties and the structure and behavior of matter on microscopic and molecular scales. The developing …
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Time-resolved linear and non-linear rheology of thixotropic and aging complex fluids: Application to particulate and biopolymeric physical gels
… materials such as hydrogels, food products and drilling fluids. These materials are in general known as mutating materials and the build-up or breakdown of microstructure is commonly both time– and shear-rate (or shear-stress)–dependent resulting in a range of complex phenomena collected under …
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Experimental and Analytical Investigation of Particle Dynamics in Newtonian and non-Newtonian Fluids in a Taylor-Couette Cell
… sedimentation in Newtonian and non-Newtonian fluids, aiming to understand their behavior in Drilling Fluid (DF) systems used in oil and gas industry, where such phenomenon can lead to operational issues such as lost circulation, well control problems, and even blowouts. To simulate DF dynamics …