INTERNATIONAL PATENT: CHINA NATIONAL PETROLEUM CORPORATION, 中国石油天然气集团有限公司, CHINA NATIONAL OIL AND GAS EXPLORATION AND DEVELOPMENT COMPANY LTD., 中国石油国际勘探开发有限公司 FILES APPLICATION FOR "METHOD AND APPARATUS FOR ACQUIRING GEOLOGICAL FORMATION BIOGENIC REEF INFORMATION AND STORAGE MEDIUM"

GENEVA, March 30 -- CHINA NATIONAL PETROLEUM CORPORATION (9 Dongzhimen North StreetDongcheng District, Beijing 100007), 中国石油天然气集团有限公司 (中国北京市东城区东直门北大街9号), CHINA NATIONAL OIL AND GAS EXPLORATION AND DEVELOPMENT COMPANY LTD. (Room 369, Building 2, East Ring RoadYanqing Garden, ZhongguancunYanqing District, Beijing 102199), 中国石油国际勘探开发有限公司 (中国北京市延庆区中关村延庆园ߏ...