扇三角洲前缘储层构型解剖与实践——以渤海湾JX油田东块为例

Fine anatomizing reservoir architecture and practice of fan-delta front: a case study of Shahejie Formation in eastern JX Oilfield, Bohai Bay Basin

陈善斌 李红英 刘宗宾 杨志成 刘斌

中海石油（中国）有限公司天津分公司渤海石油研究院，天津 300459

Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China

利用岩心、测井、地震和油藏动态等资料，对渤海JX油田东块沙河街组扇三角洲前缘储层构型进行精细解剖。结果表明：研究区主要发育泥质夹层和钙质夹层2类夹层，识别出水下分流河道、河口坝、席状砂和溢岸砂等4种单成因砂体构型单元。依据河道间沉积、韵律差异、高程差异和厚度差异等侧向识别标志，将单成因砂体的拼接样式划分为6 种类型。不同单成因砂体的发育规模存在差异，对较为发育的水下分流河道总结了相关定量参数。研究区储层构型解剖成果有效解决了油田的开发生产矛盾，对渤海JX油田高效开发具有重要的指导意义。

Based on the cores, logging, seismic and reservoir dynamic data, fan delta front structure of the Shahejie Formation in eastern JX Oilfield is elaborated. Investigations show that two interlayers including the muddy interlayer and the calcium interlayer are present in the research area. Four sandbody configurations of fan-delta front have been identified as distributary channels, mouth bar, sheet sands and overbank sands. According to four identification signatures which are inter-distributary bay, differences among the lithology rhymes, elevations and thickness, the assembly patterns of the monogenetic sandbody are divided into six types. The development scale varies among different monogenetic sandbodies, thus, a set of quantitative parameters of the distributary channels is present in this paper. Moreover, the research results are beneficial to solve the problems in the oil production and this has profound guiding significance to the efficient development in JX Oilfield.

10.6056/dkyqt201802008