Demulsifier is one of the leading factors influence this dehydration effect, was the key to reduce the cost of this gathering and transferring process node. Affected by the oil well stimulation rounds, produced fluid property and complicated composition, increasing the late crude oil dehydration difficulty, if not effective to control and test reagents adjustment, drug use cost is bound to increase. ZORANOC to ensure control the further optimization of demulsifier, decided to compare the demulsifier, screening effect is better, cheaper demulsifier into production, solid foundation for "authors efficiency" assignments section work.
At the end of may this year, demulsifier ZORANOC began to replace indoor evaluation test work, after cengcengbaguan, finally choose the two demulsifiers demulsifier manufacturer to enter the site to carry out the test. Two demulsifiers manufacturer test at the same time, strengthen the competitive power, if the manufacturer wants to enter the market, we must put the demulsifier do better and better, cheaper, so as to gain a foothold in the competition. After a series of screening contrast, ZORANOC preference to good treatment effect, dosing demulsifier concentration is low, the low cost production.
Last year, ZORANOC through improve the management system, regularly carry out evaluation of indoor experiments, using new technology, new technology optimization of heavy oil demulsifier, cost savings for the whole year a total of 14 million yuan. This year, the assignments section will through the optimization of demulsifier and replacement, continue to put reagent cost savings, improve the economic utility of demulsifier.
ZORANOC is scheduled in late June to replace demulsifier, closely tracking the demulsifier for replacement after the use effect of the scene, timely adjust dosing strategy according to site condition, and find the reason
The mechanism of the crude oil demulsifier is a reverse deformation mechanism of phase transfer. Phase transition happened after joining demulsifier, namely the ability to generate and emulsifying agent to form emulsion type instead of surfactant (reversed phase emulsion breaker). This kind of demulsifier and hydrophobic function to generate complex emulsifier, lost emulsifying properties so that the emulsifier. Collision mechanism of interfacial film. Under the condition of heating or stirring, demulsifier have many chances of collision interface of emulsion membrane, or adsorbed on the interface membrane, replacing part of the surface active substance, or exclusion to break interfacial film, make its stability is greatly reduced, the flocculation, coalescence and demulsification.
In recent years, the mechanism of demulsification of crude oil emulsions, research focused on fine droplet coalescence process inspection and demulsifier on rheological properties of interface, etc. But due to the effect of emulsion demulsifier is very complicated, although a lot of research work in this field, at present there is no unified judgment on demulsification mechanism.
The demulsification mechanism of several currently accepted: (3) the solubilization mechanism. Use of demulsifier one or a few molecules can form micelles, the polymer thread or micellar solubilization emulsifier molecule, emulsifying crude oil demulsification. (4) fold deformation mechanism. Microscope observation results show that the W/O emulsion with double layer or multilayer hydrosphere, two layer between the hydrosphere is oil. Droplets under the action of heat mixing and demulsifier, interconnected droplet within each layer, the droplets condense and demulsification.
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