A Study of Precipitation from Supersaturated Solutions of Strontium Sulfate

1935 ◽  
Vol 57 (3) ◽  
pp. 387-390 ◽  
Author(s):  
Alan Newton Campbell ◽  
Edward John Robert Cook
Keyword(s):  
Strontium Sulfate ◽  
Supersaturated Solutions

scholarly journals Controlled Growth of Strontium Sulfate Particles in Aqueous Solution: Inhibition Effects of a Bubble Column Evaporator

Substantia ◽  
2021 ◽  
pp. 95-107
Author(s):  
Atikah Wan Nafi ◽  
Mojtaba Taseidifar ◽  
Richard M. Pashley ◽  
Barry W. Ninham
Keyword(s):  
Bubble Column ◽  
Gas Production ◽  
Significant Inhibition ◽  
Strontium Nitrate ◽  
Remarkable Effect ◽  
Bubble Interactions ◽  
Mechanical Stirring ◽  
Strontium Sulfate ◽  
Scale Deposits ◽  
Supersaturated Solutions

In the oil industry, strontium sulfate (SrSO4) scale deposits have long plagued oilfield and gas production operations. This remains an unsolved problem. We here show how the bubble column evaporator (BCE) can be used to control aqueous precipitation from salt solutions. Mixtures of strontium nitrate and sodium sulfate in the BCE system were used to precipitate strontium sulfate at different degrees of supersaturation. The effectiveness of the BCE system was compared to standard mechanical stirring. The precipitation of strontium sulfate in both processes was monitored through turbidimeter, particle counting, Dynamic Light Scattering (DLS) and Scanning Electron Microscopy (SEM). The results show that the BCE system has a significant inhibition effect and so can be used to control precipitation growth rate, even from supersaturated solutions. This remarkable effect also provides new insights into mechanisms of crystallisation, of bubble interactions and mineral flotation.

VII. On the action of nuclei in producing the sudden solidification of supersaturated solutions of Glauber's salt

1879 ◽  
Vol 29 (196-199) ◽  
pp. 326-331 ◽  
Keyword(s):  
Saline Solutions ◽  
Supersaturated Solutions

I propose now to state the general conclusions at which I have arrived since resuming the study of this subject two years ago. The remarks that will be made refer to solutions of the typical salt, sodic sulphate, in the proportions of 6 of salt to 3 of water. In my first two papers on supersaturated saline solutions, a nucleus is defined as a body that has a stronger adhesion for the salt, or for the liquid of a solution, than subsists between the salt and the liquid.

TL and OSL studies on irradiated nano barium strontium sulfate to photons, electrons and protons

2021 ◽  
pp. 118592
Author(s):  
Eslam Aboelezz ◽  
Emanuela Bortolin ◽  
Maria Cristina Quattrini ◽  
Sara Della Monaca
Keyword(s):  
Barium Strontium ◽  
Strontium Sulfate

Verifying Production Losses due to Petroleum Flow Improving Well Intervention and Design

2016 ◽  
Author(s):  
Paola Adriana Coca Suaznabar ◽  
Kazuo Miura ◽  
Celso Kazuyuki Morooka
Keyword(s):  
Saturation Index ◽  
Radioactive Material ◽  
Design Phase ◽  
Data Set ◽  
Line System ◽  
Well Design ◽  
Strontium Sulfate ◽  
Offshore Oil ◽  
Solids Deposition ◽  
Production Losses

The purpose of this research is to identify in the literature: causes, factors, case study descriptions and adopted solutions for production losses regarding the petroleum flow in offshore oil wells. Those facts will be organized and structured to identify potential zones of intervention for planning the well maintenance during well design phase to avoid production losses. This paper focuses on four offshore regions: Campos Basin, Gulf of Mexico, North Sea, and West Africa. These regions represent the most significant share of offshore oil production in the world. Data set available in the last thirty five years through academic, technical and governmental reports in the literature were the basis of this study. The procedure was accomplished in three steps: (1) data research (2) analysis of the data (3) guidelines establishment. The main cause of production loss regarding the petroleum flow is the solids deposition in the well/line system, such as hydrates, asphaltenes, wax, scales (barium sulfate, strontium sulfate, calcium sulfate, calcium carbonate, and naturally occurrence radioactive material), and calcium naphthenates. In this work the superposition of graphics (hydrate curve, wax appearance temperature, asphaltene onset pressure, and saturation index) resulted in a region free of solids deposition, denominated as “flow assurance envelope”. The main expected result is to propose a guideline to be used during the well design phase in order to minimize and facilitate the well intervention. The main contributions of this paper to the oil industry are the identification of potential zones of intervention due to solids deposition in the well/line system, the foresight of well intervention before the beginning of the oilfield production, and finally, possibilities to improve the well or intervention design.

Crystallization of Supersaturated Solutions by Means of Electric Current

Nature ◽  
1947 ◽  
Vol 159 (4033) ◽  
pp. 230-231 ◽  
Author(s):  
A. J. H. BOERBOOM
Keyword(s):  
Electric Current ◽  
Supersaturated Solutions
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