油气地质

渤海海域新近系浅水三角洲沉积体系分析

  • 旷红伟 ,
  • 高振中 ,
  • 王正允 ,
  • 王晓光
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  • 1.中国海洋石油( 中国) 有限公司天津分公司; 2.中国海洋石油基地集团采油技术服务公司渤海石油研究院
代黎明, 1981 年生, 男, 硕士学位, 研究方向为沉积学与储层预测。地址: ( 300452) 天津市塘沽区闸北路3 号609 信箱。电话:( 022) 25803844。E- mail: dailm@cnooc.com.cn

网络出版日期: 2007-12-15

Depositional system of the Neogene shallow water delta in Bohai Sea area

  • KUANG Hongwei ,
  • GAO Zhenzhong ,
  • WANG Zhengyun ,
  • WANG Xiaoguang
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  • 1. Tianjin Branch of CNOOC, Tianjin 300452, China;
    2. Oil Base-Oilfield Technology Services Company, CNOOC, Tianjin 300452, China

Online published: 2007-12-15

摘要

渤海海域新近系长期被认为属于冲积河流相沉积, 然而近年勘探成果表明, 渤海海域渤中凹陷、黄河口凹陷新近系广泛存在浅水湖泊沉积, 其中还发现了一种优质储集体———浅水三角洲砂体。笔者从古生物组合、泥岩特征、岩电特征、砂岩百分含量、砂岩粒度特征、沉积构造等方面证实了渤海新近纪存在浅水湖泊沉积。在河流入浅湖处则发育浅水三角洲, 可以从沉积层序、沉积微相类型等方面加以识别。浅水三角洲不同于经典的Gilbert 型三角洲, 有其自身的特点, 表现为垂向上相序不连续; 骨架砂体为分流河道砂体; 河口坝厚度较薄; 前缘相带十分宽广; 砂体具条带方向性; 三角洲形态表现为鸟足状等。

本文引用格式

旷红伟 , 高振中 , 王正允 , 王晓光 . 渤海海域新近系浅水三角洲沉积体系分析[J]. 岩性油气藏, 2007 , 19(4) : 75 -81 . DOI: 10.3969/j.issn.1673-8926.2007.04.013

Abstract

The sedimentary facies of Neogene in Bohai Sea area used to be considered as fluvial facies over a long time. Results of exploration in recent two years indicate that shallow lake is widely developed in the Neogene in Bozhong Sag and Huanghekou Sag in Bohai Sea area, in which a kind of excellent reservoir is also found—shallow water deltaic sand bodies. It is proved that the shallow lake exists in the Neogene in Bohai Sea area by the evidence of paleontological assemblages, characteristics of mudstone, litho-electric relationship, sand percentage, sand grain size, sedimentary structure. Shallow water delta is developed in the river mouth around the shallow lake which can be identified with sedimentary sequence and types of sedimentary facies. Being different from the classical Gilbert delta, shallow water delta is with thinner mouth bar and broadly spread sheet sands, and displays that the facies sequence is discontinuous in vertical direction, and the matrix sand bodies are distributary channel sand bodies. The type of the shallow water delta is fluvial-dominated delta.

参考文献

[ 1] 徐长贵, 姜培海, 武法东, 等.渤中坳陷上第三系三角洲的发现、沉积特征及其油气勘探意义[ J] .沉积学报, 2002, 20( 4) :588- 593.
[ 2] 龚再升, 王国纯, 贺清.上第三系是渤中坳陷及其周围油气勘探的主要领域[ J] .中国海上油气( 地质) , 2000, 14( 3) : 145-156.
[ 3] 蔡东升, 罗毓辉, 武文来, 等.渤海浅层构造变形特征、成因机理与渤中凹陷及其周围油气富集的关系[ J] . 中国海上油气( 地质) , 2001, 15( 1) : 35- 43.
[ 4] 龚胜利, 毕力刚.孢粉沉积作用与PL19- 3 地区晚第三纪沉积环境的关系[ J] .中国海上油气( 地质) , 2001, 15( 6) : 388- 392.
[ 5] 张传凤, 郭英海, 沈玉林.测井曲线在沉积环境解释中的应用[ J] .西部探矿工程, 2006, 19( 10) : 145- 147.
[ 6] 冯增昭.沉积岩石学( 下册) [M] .北京: 石油工业出版社, 1993.
[ 7] 楼章华, 兰翔, 卢庆梅, 等.地形、气候与湖面波动对浅水三角洲沉积环境的控制作用[ J] .地质学报, 1999, 73( 1) : 83- 91.
[ 8] 赵应成, 王天琦, 田光荣, 等.低渗透油田富集区预测技术研究[ J] .岩性油气藏, 2007, 19( 1) : 21- 26.
[ 9] 吕晓光, 李长山, 蔡希源, 等.松辽大型浅水湖盆三角洲沉积特征及前缘相储层结构模型[ J] .沉积学报, 1999, 17( 4) : 572-576.
[ 10] 楼章华, 袁笛, 金爱民.松辽盆地北部浅水三角洲前缘砂体类型、特征与沉积动力学过程分析[ J] .浙江大学学报, 2004, 31( 2) : 211- 215.
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