Results 221 to 230 of about 830,081 (261)
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Inhibition of Sulphate Scale Nucleation
Offshore Technology Conference, 1990ABSTRACT The nucleation of (Ba, Sr)S04 scale has been studied on different surfaces representative of those likely to be encountered in oil production. The amount of scale formed and the efficiencies ofthree typical scale inhibitors depended on the surface used.
A.M. Pritchard +3 more
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The Performance of Scale Inhibitors in the Inhibition of Iron Carbonate Scale
Proceedings of SPE Formation Damage Control Symposium, 1994Abstract A potential mechanism for part of the production decline observed in the Prudhoe Bay field is siderite (iron carbonate) scale deposition. This laboratory investigation focused on evaluating the effect of the existing downhole scale inhibitor program on the proposed siderite formation damage mechanism.
B. G. Kriel, C. A. Lacey, R. H. Lane
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Investigation and Improvement of BaSO4 Scale Inhibition Tests
International Symposium on Oilfield Chemistry, 1997Abstract The commonest means of laboratory evaluation/screening of scale inhibitors for oilfield applications is by conducting scale inhibition jar tests. This paper focuses on several aspects concerning barium sulphate scale inhibition jar tests and highlights three particular factors which may influence the test outcome and the ranking
M.D. Yuan, M. Anderson, E. Jamieson
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[The WP scale, an evaluation scale of anxious inhibition].
L'Encephale, 1988The phenomenon of inhibition concerns a feeling of being blocked in usual functioning. It is frequently encountered, in many disorders. Using a general model of anxiety, the authors propose a taxonomy of the phenomenon into inhibition in anxiety states and inhibition associated with other disorders, a differentiation between generalized inhibition and ...
D, Widlocher, C B, Pull
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Scaling Risk and Inhibition Prediction of Carbonate Scale at High Temperature
SPE International Conference on Oilfield Chemistry, 2017Abstract Calcium carbonate is the most common scales in oilfield and thus has been heavily studied. However, calcium carbonate scale problems continue to occur in oilfield causing significant economic loss. To better control carbonate scale, reliable models on carbonate scaling risk and inhibition predictions are clearly necessary, which
Fangfu Zhang +11 more
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A Brief Scale for Measuring “Behavioral Inhibition to the Unfamiliar” in Children
Journal of Psychopathology and Behavioral Assessment, 2006The behavioral inhibition scale (BIS) is a brief rating scale for measuring behavioral inhibition in children. The present study examined the test-retest stability of the BIS in a sample of 7-12-year-olds consisting of inhibited and non-inhibited children (N = 83). Results demonstrated that the BIS scores were fairly stable over a 2-year period, with a
van Brakel, A.M.L., Muris, P.E.H.M.
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Downhole Scale Formation and Inhibition in Mild Sulphate Scaling Conditions
SPE International Symposium on Oilfield Chemistry, 2005Proposal The presence of a mild scaling regime in a field necessitates effective measures to be taken to prevent scale formation before production is adversely impacted. However, in many cases the scaling regimes are too mild to be investigated by conventional laboratory inhibitor test protocols under realistic timescales. In such cases,
R. Stalker +4 more
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Inhibition of Scaling of Water by the Electrostatic Treatment
Water Resources Management, 2008By means of the electrostatic device, this paper researched and analyzed the effect of electrostatic treatment on the scaling of water. The results show when the charge time is 10 s, the optimal zone of tension is 400–500 V and the average efficiency is between 14% and 35%; but when the charge time is 20 s, the optimal zone of tension is 700–850 V and ...
W. J. Liu, F. Hui, J. Lédion, X. W. Wu
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Geothermics, 1998
Abstract The solubilities of pure silica, iron-silicate and aluminum-silicate scales were measured in water from 25–250°C in a laboratory pressure reactor. Iron- and aluminum-silicate scales are significantly less soluble than pure amorphous silica.
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Abstract The solubilities of pure silica, iron-silicate and aluminum-silicate scales were measured in water from 25–250°C in a laboratory pressure reactor. Iron- and aluminum-silicate scales are significantly less soluble than pure amorphous silica.
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A Novel Approach to Silica Scale Inhibition
CORROSION 1987, 1987Abstract Several aspects of silica deposition in cooling water applications have been studied. Utilizing this know ledge and the basics of silica chemistry, a new technology for inhibiting silica formation in cooling water systems has been developed.
D. A. Meier, L. Dubin
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