Oct 2 (Reuters) - Birchcliff Energy Ltd
* Birchcliff Energy Ltd provides operational update and announces closing of $31.7 million asset sale
* Birchcliff says it is re-affirming its 2017 Q4 average production guidance of 79,000 to 80,000 boe/d
* Also re-affirming 2017 annual average production guidance of 67,000 to 68,000 boe/d Source text for Eikon: Further company coverage:
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