Aug 15 (Reuters) - Woodside Petroleum Ltd WPL.AX :
* INVESTMENT EXPENDITURE FOR 2018 IS EXPECTED TO BE BETWEEN $2,000 AND $2,050 MILLION
* PRODUCTION COSTS PER BARREL OF OIL EQUIVALENT ACROSS ALL OPERATING ASSETS FOR 2018 ARE EXPECTED TO BE BETWEEN $5.50 AND $5.80
* WHEATSTONE TRAIN 2 IS RAMPING UP AS PLANNED
* INCREASE 2018 ANNUAL PRODUCTION GUIDANCE TO A RANGE OF 87 TO 91 MMBOE