浪控三角洲发育特征：以莺歌海盆地东方1-1气田上新统莺二段为例

高雨; 屈红军; 陈硕; 周伟; 莫冯阳

doi:10.16028/j.1009-2722.2020.183

浪控三角洲发育特征：以莺歌海盆地东方1-1气田上新统莺二段为例

1.
西北大学地质学系大陆动力学国家重点实验室，西安 710069

2.
中海石油（中国）有限公司湛江分公司，湛江 524057

基金项目: “十三五”国家科技重大专项“南海深水区油气资源潜力与大中型油气田勘探方向”（2016ZX05026-007）

详细信息

作者简介: 高雨（1998—），女，在读硕士，主要从事储层沉积学方面的研究工作. E-mail：1837634479@qq.com

通讯作者: 屈红军（1967—），男，博士，教授，博士生导师，主要从事储层沉积学方面的研究工作. E-mail：hongjun@nwu.edu.cn

中图分类号: P744.4; P618.13

收稿日期: 2020-11-24

刊出日期: 2021-11-27

GENETIC CHARACTERISTICS OF WAVE-DOMINATED DELTA: A CASE STUDY ON PLIOCENE YING Ⅱ MEMBER IN THE DONGFANG1-1 GAS FIELD，YINGGEHAI BASIN

1.
State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China

2.
Zhanjiang Branch of CNOOC (China) Co., Ltd., Zhanjiang 524057, China

More Information

Corresponding author: QU Hongjun, hongjun@nwu.edu.cn

Received Date: 24 November 2020

Publish Date: 27 November 2021

摘要

摘要:
浪控三角洲又可称为鸟嘴状弓形浪控三角洲，目前学术界对其沉积特征的研究较少。以莺歌海盆地莺二段为例，以测井相、地震相以及岩芯相的详细分析为基础，结合研究区沉积背景，揭示了浪控三角洲砂坝的发育特征。岩芯相上，浪控三角洲砂坝主要发育槽状交错层理，还含有少量生物遗迹构造；测井相上主要表现为连续多个反旋回漏斗型沉积层序；地震相上呈现条带状或弓形分布的低角度前积地震相。通过研究莺歌海组二段剖面相和平面相可知，浪控三角洲砂坝平面形态呈弓形，由西向东被泥流水道依次切割为3期沉积，且随着向海方向推进，砂体厚度逐渐增大。浪控三角洲为破坏性三角洲沉积，其形成机理是由于波浪作用大于河流作用，因而沉积模式受波浪改造作用影响较大。
- 浪控三角洲 /
- 浪控砂坝 /
- 反旋回 /
- 低角度前积 /
- 沉积模式 /
- 莺歌海盆地
Abstract:
Wave-dominated delta, also known as the beak-shaped or bow-shaped wave-dominated delta, has rarely been studied in literatures on its sedimentary characteristics. Taking the YingⅡMember in the Yinggehai Basin of the South China Sea as an example, based on the detailed analysis of logging, seismic and core facies, and combined with the sedimentary background of the study area, the genetic characteristics of sand bars of the wave-dominated delta are described in this paper. On the core facies, the wave-dominated deltaic sand bars are characterized by trough cross beddings with a small amount of lebensspur structures. In the logging curve it shows a series of continuous multiple reverse cyclic funnel-shaped sedimentary sequences. Low-angle progradational seismic facies are observed in bands or bow-shaped deposits. Based on the profile and plane views, it can be seen that the wave-dominated deltaic sand bars have a bow-shaped pattern in plane view, which is successively cut into three parts from west to east by mud flow channels, and the thickness of sand body increases progradationally. The wave-dominated delta is a destructive facies of a delta formed under the action of wave transformation when the wave action is stronger than the river.
- wave-dominated delta /
- wave-dominated sand bar /
- reverse cycle /
- low-angle prograde /
- sedimentary model /
- Yinggehai Basin

HTML全文

图 1 东方1-1气田、井位及对比剖面位置^[23]

Figure 1.

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图 2 地层综合柱状图

Figure 2.

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图 3 东方1-1气田岩芯岩性构造特征

Figure 3.

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图 4 莺歌海盆地东方1-1气田莺二段岩芯沉积构造与概率粒度曲线图

Figure 4.

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图 5 东方气田莺二段DF1-1-5井典型测井曲线特征

Figure 5.

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图 6 过DF1-1-5—DF1-1-3井东西向地震剖面显示由西向东的前积反射

Figure 6.

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图 7 东方1-1气田莺二段DF1-1-9—DF1-1-5—DF1-1-11—DF1-1-3井连井沉积相对比剖面

Figure 7.

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图 8 莺歌海盆地东方1-1气田莺二段平面展布图

Figure 8.

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图 9 莺歌海盆地东方1-1气田岩芯构造特征

Figure 9.

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图 10 莺歌海盆地东方1-1气田上新统莺二段综合沉积模式

Figure 10.

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