琼东南盆地深水区中央峡谷砂体成因与展布规律
发布时间：2019-04-10 08:54
【摘要】：琼东南盆地深水区新发现了陵水A-2大气田,钻井揭示其中央峡谷黄流组内充填有多期优质厚层的浊积水道砂岩,且被后期泥质水道切割及块体流改造,各期砂体的叠置关系复杂。为此,利用三维地震、最新钻井岩心、壁心、岩屑化验及测井等资料,综合分析了琼东南盆地中央峡谷充填砂体的成因及其展布规律。结果表明:中央峡谷内黄流组至少发育4套厚层优质储层,且以灰色细砂岩、粉砂岩为主,砂体为浊流沉积。砂体的堆积样式为垂向孤立式和侧向加积复合式。砂体的分布具有分段性,纵向上HL_Ⅰ砂组和HL_Ⅱ砂组在中央峡谷内均有发育,HL_Ⅲ砂组和HL_Ⅳ砂组在中央峡谷中下游段发育;横向上,峡谷平直段—低弯曲段砂体一般连片分布,中—高弯度段砂体呈独立块状分布。另外,根据中央峡谷内砂体在纵向上相互叠置、横向上连片分布的特征,建立了中央峡谷黄流组5期砂体在空间上的立体展布模式,对预测类似砂体分布具有重要意义。
[Abstract]:In the deep water area of Qiongdongnan Basin, a new gas field, Lingshui A\ + 2, has been discovered. The drilling shows that there are many high quality turbidite channel sandstone filled in the Yellow Stream formation of the central canyon, and it is cut by the later muddy channel and modified by the block flow. The overlaying relationship of sand bodies in each stage is complex. In this paper, the genesis and distribution of filling sand body in the central canyon of Qiongdongnan Basin are comprehensively analyzed by using three-dimensional seismic data, the latest drilling core, wall core, cuttings test and well logging data. The results show that at least four sets of thick and high quality reservoirs are developed in the Huangliu formation in the central canyon, with gray fine sandstone and siltstone as the main sand body and turbidite deposits. The stacking pattern of sand body is vertical solitary and lateral accretion compound. The distribution of sand bodies was divided into segments. The HL_ 鈪，
本文编号：2455658
[Abstract]:In the deep water area of Qiongdongnan Basin, a new gas field, Lingshui A\ + 2, has been discovered. The drilling shows that there are many high quality turbidite channel sandstone filled in the Yellow Stream formation of the central canyon, and it is cut by the later muddy channel and modified by the block flow. The overlaying relationship of sand bodies in each stage is complex. In this paper, the genesis and distribution of filling sand body in the central canyon of Qiongdongnan Basin are comprehensively analyzed by using three-dimensional seismic data, the latest drilling core, wall core, cuttings test and well logging data. The results show that at least four sets of thick and high quality reservoirs are developed in the Huangliu formation in the central canyon, with gray fine sandstone and siltstone as the main sand body and turbidite deposits. The stacking pattern of sand body is vertical solitary and lateral accretion compound. The distribution of sand bodies was divided into segments. The HL_ 鈪，
本文编号：2455658
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