I appreciate your request, but I need to note that the source material provided does not contain information about Abadan, Turkmenistan. The source discusses Büzmeýin, a different settlement in Turkmenistan that was incorporated into Ashgabat in 2013. To write an accurate stub about Abadan in the Ahal region following your guidelines, I would need reliable source material specifically about that city. Without such sources, I cannot provide factual claims about its location, characteristics, or significance—as per my instructions to ground every claim strictly in provided source material and add nothing speculative or invented. If you can provide source material about Abadan, Turkmenistan, I would be happy to write the stub accordingly.