据钻机地带8月16日报道，油价跌至逾六个月最低点，由于贸易商在权衡原油出口增加的前景与全球经济增长前景恶化。
西得克萨斯中质原油期货下跌3.2%，收于每桶87美元以下，这是夏季又一次剧烈波动，交易清淡。
由于美国经济数据疲软，包括制造业迅速降温，美国基准股指已经走软。受到密切关注的即期和期货价差显示，对石油供应紧张的担忧正在减弱。
Oanda的高级市场分析师Craig Erlam表示，如果本周发布了最终声明，那么这笔交易的可能性正在被定价，这将给油价带来双向风险。但油价疲软的主要驱动因素是全球经济衰退的影响，这可能会使油价保持在90美元左右或更低。
荷兰国际集团（ING Bank）大宗商品策略主管沃伦•帕特森（Warren Patterson）在一份电子邮件报告中称，取消或修改制裁可能使石油日供应量增加130万桶。
对供应紧张的担忧的减轻反映在所谓的远期曲线中。尽管市场出现了现货溢价（即近期价格高于后期价格的看涨模式），但价差已明显缩小。
价格：
纽约市场9月交付的WTI期货价格下跌3.2%，至每桶86.53美元。
10月布伦特原油期货结算价下跌2.9%，至92.34美元。
周二，布伦特2022年12月合约与2023年12月合约之间的价差缩小了8美分，至每桶6.92美元，为2月份以来的最低水平。与此同时，布伦特原油的即期价差结算为现货溢价60美分，本月初为2.08美元。
郝芬 译自 钻机地带
原文如下:
Oil Falls to Lowest Level in Six Months
Oil settled at the lowest in more than six months as traders weighed the prospects with a worsening outlook for global economic growth.
West Texas Intermediate futures dropped 3.2% to close below $87 a barrel in another volatile, thinly traded summer session.
The US benchmark already had weakened amid bearish US economic data that included a rapidly cooling manufacturing sector. Closely watched prompt and futures spreads are signaling dwindling concerns about tight oil supplies.
“The potential for a deal is being priced in which creates two-way risk for the oil price if a final announcement does come this week,” said Craig Erlam, senior market analyst at Oanda. “But the primary driver of the weakness, which could keep prices around $90 or lower, is the threat of recession around the world .”
The removal or modification of sanctions could unleash an additional 1.3 million barrels of daily oil supplies, ING Bank head of commodities strategy Warren Patterson said in an emailed note.
Abating worries about tight supplies are being reflected throughout the so-called forward curve. While the market is backwardated -- a bullish pattern marked by near-term prices commanding a premium over later-dated ones -- the gap has narrowed significantly.
Prices:
WTI for September delivery fell 3.2% to $86.53 in New York
Brent for October settlement slid 2.9% to $92.34
The spead between Brent’s December 2022 and December 2023 contracts shrank by 8 cents Tuesday to $6.92 a barrel, the lowest since February. Meanwhile Brent’s prompt spread settled 60 cents in backwardation, compared with $2.08 at the start the month.
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