Feb 21 (Reuters) - Tag Oil Ltd TAO.TO
* Tag Oil announces upsize of short-form prospectus offering
* In connection with increased size of offering, previously announced over-allotment option granted to agents has been removed from offering
* Has increased size of previously announced short form prospectus offering to up to 23.1 million units of company at a price per unit of C$0.65 Source text for Eikon: Further company coverage: TAO.TO