INTERNATIONAL PATENT: DAQING OILFIELD LIMITED COMPANY, 大庆油田有限责任公司, PETROCHINA COMPANY LIMITED, 中国石油天然气股份有限公司 FILES APPLICATION FOR "DIMERIC ALCOHOL ETHER CARBOXYLATE SURFACTANT AND PREPARATION METHOD THEREFOR, INTEGRATED FRACTURING-DISPLACEMENT SYSTEM AND USE"

GENEVA, March 31 -- DAQING OILFIELD LIMITED COMPANY (No. 99, Zhongyuan Road, Ranghulu DistrictDaqing, Heilongjiang 163002), 大庆油田有限责任公司 (中国黑龙江省大庆市让胡路区中原路99号), PETROCHINA COMPANY LIMITED (9 Dongzhimen North StreetDongcheng District, Beijing 100007), 中国石油天然气股份有限公司 (中国北京市东城区东直门北大街9号) filed a patent application (PCT/CN2024/118750) for "DIMERIC ALCOHOL ETHER CARBOXYLAT...