April 3 (Reuters) - Sino Gas & Energy Holdings Ltd SEH.AX :
* Asx alert-operations update-seh.ax
* "company remains on track to achieve full year guidance of 18-23 mmscf/d"
* 2017 work program commenced and about 10% year over year well cost improvements are expected
* Average production in q1 was slightly below full year average guidance of 18-23 mmscf/d
* Q1 production was impacted by planned downstream maintenance and unplanned downtime at chinalco facility
* Unplanned downtime is within tolerance for full-year production guidance
* Reiterates full-year guidance for average gross production from linxing and sanjiaobei production sharing contracts Source text for Eikon: ID:nASX9tmm8Y Further company coverage: SEH.AX