Products tagged with 'polymorphs'

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Impact of Multiphase Flow on the Inhibition of Carbonate Scale Deposition.

Product Number: 51323-19425-SG

Author: Olujide Sanni, Frederick Pessu

Publication Date: 2023

$20.00

The crystallization of sparingly soluble salt in multiphase system, involving mixing between oil and water fractions, is one of the major challenges encountered by the petroleum industry. The kinetics of scale formation in the bulk of the fluid in the presence of the oil phase is very important and has received little attention. Most of the studies that focused on dealing with the challenges of scale formation in the oil and gas industry have been directed towards the understanding, predictions and treatment based on results from single phase brine solution.

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Mechanisms And Polymorphic Transformation Of Calcium Carbonate Inorganic Scale In Oil-Water Emulsion.

Product Number: 51322-17876-SG

Author: Olujide Sanni, Wassim Taleb, Richard Barker, Anne Neville, Ogbemi Bukuaghangin, Thibaut Charpentier, Frederick Pessu

Publication Date: 2022

$20.00

The formation of mineral scale is an undesirable phenomenon which is as a result of the disturbances in thermodynamics and chemical equilibria of the water system. CaCO₃ scale is one of the major flow challenges in the oil industry and the crystallization process starts from thermodynamically unstable hydrated form to anhydrous polymorphic stable forms^1,2 The transformation involves a series of ordering, dehydration, and crystallization processes, each lowering the enthalpy of the system where the crystallization of the dehydrated amorphous material lowers the enthalpy the most. There are two theories regarding the polymorphic transformation of a solid structure. The first suggests the transformation occurs through a direct solid transition in which the metastable phase exhibits a rearrangement of its molecules or atoms to a more stable form³. The second is valid in the presence of a solvent which allows the dissolution and the re-nucleation and growth of the stable phase⁴.

Products tagged with 'polymorphs'

Impact of Multiphase Flow on the Inhibition of Carbonate Scale Deposition.

Mechanisms And Polymorphic Transformation Of Calcium Carbonate Inorganic Scale In Oil-Water Emulsion.

Association for Materials Protection and Performance