陆丰南地区坡折带发育规律及差异控砂机制研究  

Development Law and Diff erential Sand Control Mechanism of Slope Break Zone in the Southern Lufeng Area

作　　者：吴琼玲 Wu Qiongling(Shenzhen Branch of China National Off shore Oil Corporation,Guangdong,518054)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东518054

出　　处：《当代化工研究》2023年第5期25-27,共3页Modern Chemical Research

基　　金：国家科技重大专项“南海东部海域勘探新领域及关键技术”(项目编号:2016ZX05024-004)。

摘　　要：陆相断陷湖盆坡折带类型多样且发育广泛,对层序的发育和砂体的分布起重要的控制作用,进而影响岩性-地层圈闭的发育。为明确陆丰南地区坡折带分布规律及对砂体的控制作用,本研究通过大量地震资料和钻井资料的分析,恢复和解剖陆丰南地区古近系的古地貌和复杂断裂体系,在陆丰南地区共识别了4大类6种坡折带,并指明了分布规律,进一步总结了陆丰南地区不同类型坡折带的差异控砂机制及其控制下的砂体特征和分布规律,指出断阶坡折和沉积坡折规模大、砂体类型多、物性好、储盖配置条件好,是最有利的两类坡折带。这两类坡折带在陆丰地区发育广泛,其控制下的有利砂体发育区带勘探潜力大,为后续系统性评价地层-岩性圈闭提供理论依据。The slope break zone of continental faulted lacustrine basin is diverse and widely developed,which plays an important role in con-trolling the development of sequence and the distribution of sand body,and then affects the development of lithologic-stratigraphic trap.In order to clarify the distribution law of slope break zones and control on sand bodies in the southern Lufeng area,this study recovered and dissected the paleo-geomorphology and complex fault system of Paleogene in the southern Lufeng area through the analysis of a large number of seismic data and drilling data,and a total of 4 categories and 6 types of slope break zones were identified in the southern Lufeng area,and seperate distribution law have been pointed out.The differential sand control mechanism,and the characteristics and distribution of sand bodies under the control of different types of slo-pe break zones were further summarized.It is pointed out that the fault terrace slope break and sedimentary slope break are the most favorable two ty-pes of slope break zones,due to their large scale,many types of sand bodies,good physical properties and good reservoir-cap configuration conditi-ons.These two types of slope break zones are widely developed in southern Lufeng area,and the favorable sand body development zones under their control have great exploration potential,which provides a theoretical basis for the subsequent systematic evaluation of stratigraphic-lithologic traps.

关 键 词：坡折带 差异控砂机制 陆丰南地区 陆相断陷湖盆 古近系 

分 类 号：TE122.14[石油与天然气工程—油气勘探]