Hi, I am a PhD student in chemistry (modeling), and I will in some months finish my work (and receive my degree), although I have published no papers all in any journals (I just took part at two conferences with summaries)

I am however really interested by becoming a researcher.

Do you think that it is then possible to find somewhere in the world a postdoc position for me, although I will have no publications to present ?

For I would like this way to publish articles, so as to be able to get known and reckoned in the scientific community.

It's obviously an advantage to have some publications when applying for postdocs, but it's certainly possible to find one without. In a lot of cases people get postdoc positions through word of mouth and recommendation from their supervisors, so in your case this route might be easier. I would suggest that you try and find a mutual contact, if possible, between your current department and the one you want to apply to.