Results 221 to 230 of about 13,384 (264)

Oil Well Cement Modified with Bacterial Nanocellulose

2018
During oil well completion, cement slurries are pumped into the annular area between the casing and the borehole. These are used to contain and prevent corrosion and erosion of the casing and to hydraulically isolate the various formations through the borehole, avoiding the filtration of pollutants in aquifers, loss of productivity, etc.
Christian M. Martín, Ignacio Zapata Ferrero, Patricia Cerrutti, Analía Vázquez, Diego Manzanal, Teresa M. Pique   +5 more
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A Ten-Pound Cement Slurry for Oil Wells

Journal of Petroleum Technology, 1954
Abstract A cement slurry lightweight additive has been adapted in the Conoco laboratories for use in oil well cements. This additive makes possible the use of air to lighten oil well cement slurries. Specifically, the additive consists of small clay bubbles of air having sufficient strength to resist crushing by ...
Henry F. Coffer, J.J. Reynolds, Roscoe C. Clark   +2 more
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Improvement properties of Oil Well Cement Slurry in Cement Job

2018
Cement slurry, which is used in the process of cement oil wells with more complex physical properties than the cement mixture used in any other process due to the impact of temperature and pressure conditions different from normal conditions, starting from the pumping process, to reach the bottom.
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Development of New Green Cement for Oil Wells

Materials Science Forum, 2016
For many years, Ordinary Portland Cement (OPC) is used in oil well cementing operation. But the OPC gets degraded in the acidic environment because of having poor mechanical characteristics. A new technology called geopolymeric cement system is developed from the secondary byproducts of the industry to replace the conventional cement slurry in oil well
Alagu Karthik Valliappan, Raja Rajeswary Suppiah, Sonny Irawan, Ridho Bayuaji   +3 more
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New Thermally Responsive Cement for Heavy Oil Wells

SPE Heavy Oil Conference Canada, 2012
Abstract Canada’s oil sands are one of the world’s largest hydrocarbon resources. The initial volume of crude bitumen in place is estimated to be approximately 260 billion cubic metres with 11 percent or 28 billion cubic metres recoverable under current economic conditions.
Elena M. Tomilina, Alice Chougnet-Sirapian, Wesam Aboutourkia   +2 more
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Vegetable oil-based preflush fluid in well cementing

Journal of Petroleum Science and Engineering, 2018
Abstract Efficient cement bonding in wellbores provides better zonal insulation, containment of gas migration, prevention of excessive water production, besides affecting their economical performances. Carrying out a properly sized and formulated cleanup process (or pre-flush) is one of the most costly tasks in wellbore preparation.
F.D.S. Curbelo, A.I.C. Garnica, E.A. Araújo, E.M. Paiva, A.G. Cabral, E.A. Araújo, J.C.O. Freitas   +6 more
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Porosity of oil well cement slurries during setting

Advances in Cement Research, 1995
The phenomenon of ‘gas migration’ during oil well cementing is believed to occur during the transition state between initial and final set of the cement. In order to evaluate the importance of pore openings and total porosity in the critical time gap, a suitable experimental technique was tested on some neat oil well cement slurries. The hydration was
H. Justnes, P. Skalle, J. Sveen, B. A. Øye   +3 more
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Cementing Glasses for oil Well Applications

2007
Venezuela has one of the biggest reserves of heavy crude oil on the world and the steam-injection is one of the techniques employed to extract these types of oil. Unfortunately, the conventional cementing materials used for the heavy crude oil wells do not show a good performance after two/three steam-injection cycles and the wells need be repaired ...
Perera, Y., Blanco, A., Jiménez, W., Quercia Bianchi, G.   +3 more
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Deformation and Acoustic Behavior of Oil Well Cements

2006
The experiments described in this thesis were designed to assess the evolution of deformation and acoustic behavior of cement slurry as it hardens. Laboratory facilities and test procedures developed over four decades in the University of Texas Rock Mechanics Laboratory were used to characterize static and dynamic deformation, failure, and inelastic ...
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Permeability of Hardened Oil-Well Cement Stone

Naftaplin = Nafta i plin, 1995
This paper deals with deteremination of water permeability of oil – well cement stone. Tests of relationship between setting time and permeability to water for diverse factors relevant water cement ratios, resulted with confirmation of former comprehension, pointing unequivocally to necessity of profound research of complex system and under ...
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