The producing group will agree to concrete levels of production by each country at its next formal meeting in November, sources say.
OPEC might still agree an oil output-limiting deal later this year as the economic problems of its de-facto leader Saudi Arabia force Riyadh to cede more ground to arch-rival Iran.
Data from the American Petroleum Institute showed crude stocks fell 752,000 bbl in the week to Sept. 23 to 506.4 MMbbl, compared with a forecast of a 2.8 MMbbl build by analysts polled by Reuters.
As natural gas producers work to improve wellhead economics, the timing of proposed LNG projects and declining U.S. exports could impact future production.
Reserves recently discovered in Mozambique's Rovuma Basin amount to about 85 trillion cubic feet, enough to supply Germany, Britain, France and Italy for nearly two decades, Reuters reported.
"The helicopter did not reach its intended destination. It was carrying five passengers and one pilot," Chevron said in a statement.
Saudi Arabia on Sept. 27 dashed hopes that OPEC oil producers could clinch a deal in Algeria this week after sources within the exporter group said differences between the kingdom and rival Iran remained too wide.
Longer laterals and debundling services are among the cost-saving and value-generating moves as E&Ps aim for higher returns amid lower commodity prices.
Evidence is increasingly emerging in Norway that its recent lean-and-mean approach is paying dividends, reducing previously prohibitive costs to economically viable levels.
Saudi Aramco outlined a plan known as In-Kingdom Total Value Add (IKTVA) in 2015 when CEO Amin Nasser said the company would spend more than $300 billion over the next 10 years, Reuters reported.
The company is among those that have formed partnerships while strengthening existing relationships with E&Ps.
Maersk said it would look for solutions for its oil and oil-related businesses, which are to be split from the main company either individually or in combination 'in the form of joint-ventures, mergers or listing.'