Dec 19 (Reuters) - Cathedral Energy Services Ltd CET.TO
* Says disposition will result in an estimated loss on sale for accounting purposes of approximately $6.5 million
* entered into agreement to sell its flowback,production testing assets to Ideal Completions for $17.8 million
* Cathedral Energy Services announces sale of flowback and production testing division assets Source text for Eikon: ID:nCNWR3zFFa Further company coverage: CET.TO