Results 251 to 260 of about 10,595 (295)

Cement slurry contamination with oil-based drilling fluids

Journal of Petroleum Science and Engineering, 2017
Abstract Primary cementing constitutes the displacement of a cement slurry in an annular oil well. In the event of an unwanted mixture of drilling fluid and cement slurry during this operation, cement properties may be compromised. The aim of this study was to investigate the contamination in cement slurries caused by oil base drilling fluids ...
Angelo Araujo Soares, Júlio Cézar de Oliveira Freitas, Dulce Maria de Araujo Melo, Renata Martins Braga, Lucas Amaral-Machado, Paulo Henrique Silva Santos, Lech Walesa Oliveira Soares   +6 more
openaire   +1 more source

Oil-Based Drilling Fluids: Are they an Environmental Risk?

1987
The use of oil-based drilling fluids has been discouraged in hydrocarbon exploration and production in the marine environment but these drilling fluids are presently being used to a considerable degree in the Jnited Kingdom and Norwegian sectors of the North Sea.
F. Payne Jerry, L. Fancey, J. Kiceniuk, U. Williams, Anver Rahimtula, S. Khan, Jim Osborne   +6 more
openaire   +1 more source

Formulation of an Environmentally Safe Oil Based Drilling Fluid

SPE Asia-Pacific Conference, 1991
Abstract The usage of oil especially diesel oil as the continuous phase of drilling mud is widespread when drilling through sensitive producing formation and troublesome shale zone. Diesel oil is harmful to the environment-particularly marine environment in offshore application due to extensive legislation now exist in ...
Abu Yassin, Azmi Kamis, Mohammad Abdullah   +2 more
openaire   +1 more source

Development of Organoclays for Use in Oil-Based Drilling Fluids

Materials Science Forum, 2012
The organoclays are derived from bentonite clays treated in aqueous solution with surfactants, which are incorporated into the interlayer surface of clays, covering them with an organic layer; so, the naturally hydrophilic clay becomes hydrophobic.
Mirtys Allamana Ferreira Cardoso, Heber Sivini Ferreira, Isabelle Albuquerque da Silva, Heber Carlos Ferreira, Gelmires Araújo Neves   +4 more
openaire   +1 more source

Environmentally Safe Oil-Based Fluids for Drilling Activities

Proceedings of SPE/EPA Exploration and Production Environmental Conference, 1999
Abstract Diesel based drilling fluids had been widely used in the past due to its low price in the market. However, it has been well documented the adverse health and environmental effects of Diesel mostly due to the high aromatic hydrocarbon content which makes it toxic.
G. Sáchez, N. León, M. Esclapés, I. Galindo, A. Martínez, J. Bruzual, I. Siegert   +6 more
openaire   +1 more source

Circular Economy Applied to Synthetic Oil-Based Drilling Fluids

Day 1 Mon, February 21, 2022, 2022
Abstract Circular economy has become in the last decades one of the major subjects of debate for corporations around the globe. The ever-growing attention towards the environment and a more sustainable exploitation of the resources of the planet have led the major Oil Companies worldwide to reconsider their internal processes and ...
Matteo Giubertoni, Luca Affede, Gabriele Carpineta   +2 more
openaire   +1 more source

Wettability Alteration Induced by Oil-Based Drilling Fluid

Proceedings of SPE Formation Damage Control Symposium, 1988
ABSTRACT Invert emulsion oil based drilling fluids rely on surfactants and emulsifiers to maintain the stability of the invert emulsion. An excess of oil wetting agents in the system is usually necessary in order to oil wet the drilled solids. This excess of surfactants causes wettability alteration in the drilled formation.
T. J. Ballard, R. A. Dawe
openaire   +1 more source

The Effect of Oxidation on Viscosity of Oil-Based Drilling Fluids

Journal of Canadian Petroleum Technology, 2006
Abstract True downhole rheological properties affect equivalent circulating density, hole cleaning, barite sag, surge/swab pressures during tripping, pump pressure, and bit hydraulics. Gelation and excessive viscosity are major concerns at high temperatures.
K. Shahbazi, S.A. Mehta, R.G. Moore, M.G. Ursenbach   +3 more
openaire   +1 more source

Dynamic Barite Sag in Oil Based Drilling Fluids

Mineral Processing and Extractive Metallurgy Review, 2000
Abstract A rheological technique is described which utilises flat parallel plate geometry. The technique is sensitive enough to pick up the effect of syneresis and resulting movement of denser materials from the surface layers into the bulk of the drilling mud samples over time.
RICHARD P. JACHNIK, GEOFFREY ROBINSON
openaire   +1 more source

Separation and Recycling of Used Oil-Based Drilling Fluids

IPTC 2009: International Petroleum Technology Conference, 2009
Abstract A novel approach has been taken to separating, recovering and recycling the oil-continuous phase from used oil-based drilling fluids. The method is based on destabilizing and aggregating the suspended solids and brine droplets through the application of polymers and surfactants in a controlled mixing device.
Ray Farinato, Henry M. Masias, Diana Garcia, Richard Bingham, Glenn David Antle   +4 more
openaire   +1 more source