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渤海湾盆地歧口凹陷南部沙河街组 浊积扇储层综合预测

作    者:谭建财1,张春华2,张明伟1,刘田1,邵远1
单    位:1 中海石油(中国)有限公司湛江分公司;2 中国石油集团经济技术研究院
基金项目:
摘    要:
浊积扇;地震属性分析;测井约束反演;地质统计反演;储层预测;沙河街组;歧口凹陷
关键词:浊积扇;地震属性分析;测井约束反演;地质统计反演;储层预测;沙河街组;歧口凹陷

Comprehensive prediction of turbidite reservoir of Shahejie Formation in the south of Qikou Depression, Bohai Bay Basin

Author's Name: TAN Jiancai, ZHANG Chunhua, ZHANG Mingwei, LIU Tian, SHAO Yuan
Institution: CNOOC China Limited Zhanjiang Branch
Abstract:
A set of lacustrine turbidite fan deposit was developed in the Paleogene Shahejie Formation in the south of Qikou Depression, Bohai Bay Basin. The sandstone reservoir is characterized by small distribution range, rapid change and thin interbedding of sandstone and mudstone. Based on the recognition of sequence stratigraphic framework and reservoir genetic type, combined with the vertical fine logging data and lateral intensive seismic data, the “three-step” seismic reservoir prediction was comprehensively carried out, including seismic attribute analysis, well logging constrained inversion and geostatistical inversion. It is shown that sandbodies are superimposed and distributed continuously along with the direction of sediment source, but change rapidly and are mostly lenticular while being perpendicular to the direction of sediment source. Under the control of the footwall in the south of the turbidite fan, the sandbodies in the south are generally thick, and the turbidite channel sandbodies are also relatively thick. The application effect shows that the “three step” reservoir comprehensive prediction technology of seismic attribute analysis, well logging constrained inversion and geostatistical inversion, is more suitable for fine reservoir prediction under the condition of sparse well network and large well spacing.
Keywords: words:turbidite; seismic attributes analysis; well logging constrained inversion; geostatistical inversion; reservoir prediction; Shahejie Formation; Qikou Depression
投稿时间:2020-04-17  
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