| 辽河西部凹陷曙北地区沙四段薄砂层成因类型及分布规律 |
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| 引用本文： | 宋兵,王波,刘兴周,刘少治,陈希光,卢文忠.辽河西部凹陷曙北地区沙四段薄砂层成因类型及分布规律[J].地质与资源,2021,30(6):698-706. |
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| 作者姓名： | 宋兵 王波 刘兴周 刘少治 陈希光 卢文忠 |
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| 作者单位： | 1. 中国石油杭州地质研究院, 浙江 杭州 310023;2. 中国石油辽河油田公司 勘探开发研究院, 辽宁 盘锦 124010 |
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| 基金项目： | 国家科技重大专项"大型岩性油气藏形成主控因素与有利区带评价"（2017ZX05001-002）. |
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| 摘 要： | 为了明确辽河西部凹陷曙北地区沙河街组四段薄砂层成因类型及分布规律，从岩心、测井响应和地震反射特征等方面总结了各类成因薄砂层的识别标志，并预测了各砂层组的砂体展布，探讨了砂体发育的控制因素，总结了沉积模式.研究结果表明，曙北地区沙四段为扇三角洲-湖泊的沉积体系，薄砂层发育水下分流河道、河口坝、低隆滩坝、沿岸浅滩4种成因类型，其中以水下分流河道和低隆滩坝为主.古地貌、古物源和古水深控制了各类砂体的展布.以曙光和兴隆台古潜山一线为界，南部为扇三角洲体系沉积区，主要发育前缘水下分流河道和河口坝；北部（包括低隆区）为无明显水流注入的半封闭湖湾区，主要发育低隆滩坝砂体和灰/云坪，在西侧沿岸局部地区还发育沿岸浅滩.储量区外大面积发育的低隆滩坝砂体，是下一步碎屑岩增储上产的潜在接替区域.
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| 关 键 词： | 岩性油气藏 沉积体系 薄砂层 沙四段 曙光油田 辽河西部凹陷 |
| 收稿时间： | 2020-11-02 |
GENETIC TYPES AND DISTRIBUTION RULES OF THIN SAND LAYERS IN THE FOURTH MEMBER OF SHAHEJIE FORMATION IN SHUBEI AREA OF THE WESTREN SAG,LIAOHE DEPRESSION |
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| SONG Bing,WANG Bo,LIU Xing-zhou,LIU Shao-zhi,Chen Xi-guang,Lu Wen-zhong.GENETIC TYPES AND DISTRIBUTION RULES OF THIN SAND LAYERS IN THE FOURTH MEMBER OF SHAHEJIE FORMATION IN SHUBEI AREA OF THE WESTREN SAG,LIAOHE DEPRESSION[J].Geology and Resources,2021,30(6):698-706. |
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| Authors: | SONG Bing WANG Bo LIU Xing-zhou LIU Shao-zhi Chen Xi-guang Lu Wen-zhong |
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| Institution: | 1. Hangzhou Institute of Geology, CNPC, Hangzhou 310023, China;2. Research Institute of Petroleum Exploration and Development, Liaohe Oilfeld Branch, CNPC, Panjin 124010, Liaoning Province, China |
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| Abstract: | To determine the genetic types and distribution rules of thin sand layers in the fourth member of Shahejie Formation (Es4) in Shubei area of the western sag, Liaohe Depression, the paper summarizes the identification marks of thin sand layers of different genesis based on the characteristics of core, logging response and seismic reflection, and predicts the distribution of sand bodies of each sand group, as well as the controlling factors of sand body development and sedimentary models. The results show that the Es4 in the area belongs to fan delta-lacustrine sedimentary system. The thin sand layers have 4 genetic types, including underwater distributary channel, low-uplift bar, estuary dam and coastal shoal, among which the former two are dominated. The paleo-landform, paleo-provenance and paleo-water depth control the distribution of sand bodies. Divided by Shuguang and Xinglongtai buried hills, the south is the fan delta sedimentary area where the front subaqueous distributary channel and estuary dam are developed; while the north (including low-uplift area) is a semi-closed bay area without obvious water injection where the low-uplift beach bar sand body and limestone/dolomite flat are mainly developed, with coastal shoals along some areas of western coast. The largely developed low-uplift bar sand body outside the reserve area is a potential substitution for the increasing reserves and production of clastic rocks. |
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| Keywords: | lithologic hydrocarbon reservoir sedimentary system thin sand layer 4th member of Shahejie Formation (Es4) Shuguang Oilfield western sag of Liaohe Depression |
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