'not only considered' is correct and usable in written English.
You can use it when you want to emphasize that something is thought of in a certain way, not just that. Example: She is not only considered to be a great leader, but a great mentor as well.
SARAH STILLMAN: Indeed — I not only considered it, I did it.
Pliny the Elder not only considered lightning direful, but noticed it often accompanied volcanic eruptions.
This method, not only considered experts' experience, but also appropriately reduced the uncertainties of human involvement during the evaluation process and improved the applicability of our method.
The model not only considered the temperature gradient along the fluid flow direction, but also included the fluid heat transfer and the flow resistance characteristics.
In a country where cheap fuel and access to easy transportation are not only considered a birthright but also a key employer, the government will be forced to produce very-low-quality gas in its substandard petrochemical facilities.
But no one exemplifies the comeback of the middle linebacker better than Lewis, a confident, one-man wrecking machine who is not only considered the best at his position but is also quickly being thought of as the best ever.
Of those, a meager17,5000 are collecting sales tax, which is not only considered a nuisance by shopkeepers but can also be used as incriminating evidence of their own unreported earnings.
With beads of sweat dripping off my nose and into the mixture, I began to understand why soba is not only considered the healthiest choice of noodle in Japan, but also why the manual labour drives the cost up.
For the latter we not only considered the penalty of the resulting solutions, but we also performed a conclusive user evaluation to assess the subjective quality of the playlists generated by both algorithms.
Their model not only considered a finite project budget, but also applied the fractal dimension (FD), a commonly used index in landscape ecology, to assess the spatial complexity of the habitat.
Danheiser's nominators not only considered him to be an inspiring teaching and a dedicated mentor, but also a "paragon of clarity, conciseness, and precision" whose lecture notes continue to be an invaluable resource for many of his students long after the course is over.
