渤海海域浅层岩性油藏勘探作业技术进展  

Progress of exploration operation technologies for shallow lithologic reservoirs in Bohai Sea

作　　者：尚锁贵 高科超 高强勇 张向前 张金煌 SHANG Suogui;GAO Kechao;GAO Qiangyong;ZHANG Xiangqian;ZHANG Jinhuang(CNOOC China Limited,Tianjin Branch,Tianjin 300459,China;CNOOC EnerTech-Drilling&Production Co.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海油能源发展股份有限公司工程技术分公司,天津300459

出　　处：《中国海上油气》2024年第4期107-118,共12页China Offshore Oil and Gas

基　　金：中国海洋石油有限公司“十四五”重大科技项目“地层岩性油气藏高效识别与精细评价技术(编号:KJGG2022-0303)”部分研究成果。

摘　　要：近年来,新近系浅层岩性油藏逐步成为渤海海域勘探储量发现的重要领域,浅层岩性油藏以河流相沉积及浅水三角洲沉积为主,储层平面展布广,垂向薄砂厚泥互层,岩性疏松且油质黏稠,导致勘探作业成本高,钻井取心卡层、原油样品及商业性产能获取难度大。“十三五”以及“十四五”期间,渤海油田产学研用结合,在浅层勘探钻井提效、浅层勘探资料录取(疏松砂岩钻井取心、疏松砂岩稠油电缆取样)、浅层勘探产能释放(地化原油密度预测、疏松砂岩稠油冷采测试)、浅层勘探解释评价(低对比度油层识别)等4个方面,逐步建立了渤海油田浅层勘探作业技术体系。2019—2023年,低成本、高成效评价4个大中型浅层岩性稠油油田,为渤海浅层岩性勘探的持续深入奠定了坚实的技术基础,对推动中国海油浅层岩性勘探开发具有重要借鉴意义。In recent years,Neogene shallow lithologic reservoirs have gradually become an important field in the exploration and discovery of reserves in the Bohai Sea.The shallow lithologic reservoirs are dominated by fluvial facies deposits and shallow water delta deposits,with wide horizontal distribution of reservoirs,vertical interbedding of thin sand and thick mud,loose lithology,and viscous oil,resulting in high exploration cost,difficulty in capturing drilling cores,and challenges in obtaining crude oil samples and achieving commercial productivity.During the“13th Five-Year Plan”and“14th Five-Year Plan”periods,the technical system of shallow exploration operation in Bohai oilfield has been gradually established through the combination of production,learning,research,and application in terms of shallow exploration drilling efficiency improvement,shallow exploration data acquisition(drilling coring of loose sandstone and heavy oil cable sampling of loose sandstone),shallow exploration productivity release(geochemical crude oil density prediction and heavy oil cold production test of loose sandstone),and shallow exploration interpretation and evaluation(low-contrast oil formation identification).From 2019 to 2023,the low-cost and high-efficiency evaluation of four large and medium-sized shallow lithologic heavy oilfields has laid a solid technical foundation for the continuous in-depth shallow lithology exploration in the Bohai Sea and has important reference significance for promoting the shallow lithology exploration and development of offshore oilfields in China.

关 键 词：渤海海域 新近系 浅层 岩性油藏 勘探作业 钻井提效 资料录取 产能释放 解释评价 

分 类 号：TE132.14[石油与天然气工程—油气勘探]