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- Title
水中固体颗粒对结垢与阻垢的影响及机理.
- Authors
董梅玉; 杨海燕; 潘谦宏; 汤 颖
- Abstract
The use of scale inhibitors is one of the most effective ways to inhibit scale formation in oilfield oil and gas gathering and transmission systems. The traditional evaluation method of scale inhibitor does not consider whether the suspended insoluble solid particles (clay, silt, etc.) in oilfield water affect the evaluation results. Taking CaCO3 crystallization process as the research object, the influence of suspended solid particles (calcium carbonate powder, silicon dioxide powder, calcium-based clay) in supersaturated solution on the calcium carbonate deposition process and the effect of scale inhibitor were studied by conductivity method. The experimental results showed that at the experimental temperature of 70 ℃ and speed of 250 r/min, the scale inhibition effect of the scale inhibitor in the supersaturated solution containing suspended insoluble solid particles was reduced, mainly because the suspended solid particles in the supersaturated solution would accelerate the growth rate of calcium carbonate crystals, accelerate the formation of CaCO3 crystals, and thus affect the scale inhibition effect. This study confirmed that the conventional scaling and scale inhibition evaluation methods are not consistent with the field water quality, which is easy to lead to large errors between the evaluation results and the field test. It is necessary to carry out targeted evaluation for the field water quality.
- Publication
Oilfield Chemistry, 2024, Vol 41, Issue 1, p154
- ISSN
1000-4092
- Publication type
Article
- DOI
10.19346/j.cnki.1000-4092.2024.01.021