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A | 10月18日，中国石化西南石油局在四川盆地部署的金石103HF探井获得高产稳产工业气流，日产天然气25.86万立方米，评价落实地质资源量3878亿立方米。这是我国首次在寒武系筇竹寺组地层取得页岩气勘探的重大突破，开辟了页岩气规模增储新阵地，将为页岩气勘探开发向新区、新层系、新类型领域纵深推进提供有力支撑，助力川渝地区国家天然气（页岩气）千亿立方米级产能基地建设。页岩气是指赋存于富有机质泥页岩及其夹层中，以吸附或游离状态存在的非常规天然气，成分以甲烷为主，主要用于居民燃气、城市供热和发电等。据介绍，四川盆地主要有龙马溪组、寒武系筇竹寺组两套主力海相页岩层系，其中龙马溪组已实现规模开发，包括我国首个深层页岩气田——威荣页岩气田。 CVS Health is planning to remove one type of a common decongestant from shelves after an advisory committee to the U.S. Food and Drug Administration said it was ineffective earlier this year.The products contain the oral formulation of phenylephrine (PE), which is found in several over-the-counter (OTC) medications.Although PE has been used as a decongestant for nearly a century, experts have been questioning its efficacy for years.The FDA Nonprescription Drugs Advisory Committee unanimously voted in September that PE did not improve nasal congestion any more than a placebo at the dosage given for OTC use.In response, CVS said it is removing products, in which PE is the only active ingredient from store shelves. This means products like Dayquil, which used a combination of active ingredients, will remain available for purchase."We are aware of the FDA Advisory Committee's position on oral phenylephrine (PE) and will follow direction from the FDA to ensure products we sell comply with all laws and regulations," CVS Health said in a statement. "We are removing certain oral cough and cold products that contain phenylephrine as the only active ingredient from CVS Pharmacy stores. Other oral cough and cold products will continue to be offered to meet consumer needs."CVS did not give specifies on brands that will be removed.The FDA told ABC News it has not yet determined whether it no longer considers PE to be a safe and effective medication and has not ordered the product to be removed from shelves. CVS's move is voluntary."The FDA has no further information to provide at this time regarding the timing of any decision the agency may make following the advisory committee meeting," the federal health agency said.The Consumer Healthcare Products Association told ABC News that the advisory committee's recommendation is a non-binding decision and not a change in regulation."FDA is currently in the process of reviewing the regulatory status of oral phenylephrine (PE) following September's advisory committee meeting," CHPA said in a statement. "Until FDA makes a determination on the committee's recommendation, oral PE remains a Category 1 OTC ingredient, which is generally recognized as safe and effective."Concerns were first raised about PE in 2007. Since then, evidence has accumulated showing that the drug offers little to no relief for nasal congestion.Experts believe this is because the body processes the drug before it reaches the nasal passages where it needs to work.It's unclear if other major retail pharmacy chains will follow in CVS's footsteps.Walgreens Boots Alliance would not disclose whether it was planning to remove products with PE from store shelves and said it would defer to the FDA."Walgreens follows FDA regulations. We are closely monitoring the situation and actively partnering with the Walgreens Office of Clinical Integrity and suppliers on appropriate next steps," a Walgreens spokesperson told ABC News.Other major pharmacy chains including Albertsons, Costco and Kroger did immediately reply to ABC News' request for comment. Walmart did not have an answer immediately available.ABC News' Sasha Pezenik and Sony Salzman contributed to this report.。寒武系筇竹寺组则是未来最具潜力的海相页岩气勘探目标。图自中国石化，下同中国石化西南石油局加强研究，建立了针对寒武系页岩层系新的评价标准，发现了粉砂质新类型页岩气勘探目的层。同时，面对该层系优质页岩厚度薄、纵向应力差异大、规模改造难度大等问题，攻关粉砂质页岩改造技术，创新采用新的压裂工艺和压裂液体系，多段压裂改造。十年来，中国石化西南石油局大力提升油气勘探开发力度，建成世界首个7000余米超深高含硫生物礁大气田——元坝气田，探明我国首个深层页岩气田——威荣页岩气田等，落实了合兴场须家河、永川龙马溪组、井研筇竹寺组等千亿立方米以上规模增储新阵地。天然气年产量由2012年的28.2亿立方米上升至2021年的80.01亿立方米，累计生产天然气529.5亿立方米，成为中国石化最大的天然气生产企业。
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