[1]陈容涛,牛成民,王清斌,等.黄河口凹陷南部缓坡带馆陶组河流相层序特征[J].新疆石油地质,2018,(05):542.[doi:10.7657/XJPG20180507]
 CHEN Rongtao,NIU Chengmin,WANG Qingbin,et al.Characteristics of Fluvial Sedimentary Sequences of Guantao Formation in the Southern Gentle Slope Belt, Huanghekou Sag[J].Xinjiang Petroleum Geology,2018,(05):542.[doi:10.7657/XJPG20180507]
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黄河口凹陷南部缓坡带馆陶组河流相层序特征()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2018年05期
页码:
542
栏目:
出版日期:
2018-10-01

文章信息/Info

Title:
Characteristics of Fluvial Sedimentary Sequences of Guantao Formation in the Southern Gentle Slope Belt, Huanghekou Sag
文章编号:
1001-3873(2018)05-0542-07
作者:
陈容涛牛成民王清斌杨波王飞龙王军
(中海石油(中国)有限公司 天津分公司 渤海石油研究院,天津300459
Author(s):
CHEN Rongtao NIU Chengmin WANG Qingbin YANG Bo WANG Feilong WANG Jun
(Bohai Petroleum Research Institute, Tianjin Branch, CNOOC China Limited, Tianjin 300459, China)
关键词:
黄河口凹陷馆陶组河流相层序地层学高可容纳空间体系域低可容纳空间体系域储盖组合
Keywords:
Huanghekou sag Guantao formation fluvial sequence stratigraphy high accommodation system tract low accommodation system tract reservoir-cap rock combination
分类号:
TE111.2
DOI:
10.7657/XJPG20180507
文献标志码:
A
摘要:
黄河口凹陷馆陶组主要为辫状河沉积,泥岩盖层缺乏,勘探未予重视。通过岩心、测井、地震资料综合分析,认为黄河口凹陷南部斜坡带发育辫状河和曲流河两种沉积体系。利用河流相层序地层学分析方法,建立了研究区馆陶组的层序地层格架,划分出了2个三级层序(SQG2和SQG1),每个三级层序都包含一个高可容纳空间体系域和一个低可容纳空间体系域。在此基础上,总结了该区馆陶组沉积层序演化特征,在SQG2层序低可容纳空间体系域发育期,研究区为辫状河沉积,主要发育多期复合的辫状河道砂体,在SQG2层序高可容纳空间体系域发育期,研究区为曲流河沉积,主要发育孤立的点砂坝砂体和高比例的泛滥平原泥。SQG1层序演化特征与馆陶组下段类似,由于SQG1层序发育时期,可容纳空间处于较高水平,因此SQG1段砂体的粒度和砂岩百分含量比馆陶组下段整体偏小。黄河口凹陷南部缓坡带馆陶组的两套曲流河沉积可以作为良好的盖层,为油气聚集创造条件。在本次研究的指导下,研究区相继获得了一定的油气发现。
Abstract:
Guantao formation in Huanghekou sag is dominated by braided-river deposits and is lack of mudstone cap rocks, enough attention has not been paid to the exploration in the formation. Based on the comprehensive analysis on the data of core, logging and seismic, it is considered that the braided-river deposits and meandering river deposits are developed in the southern slope belt of Huanghekou sag. Using the sequence stratigraphy analysis method, the paper establishes a sequence stratigraphic framework for the Guantao formation in the study area, and classifies two 3-order sequences, namely SQG2 and SQG1, each of which contains a high accommodation system tract (HAST) and a low accommodation system tract (LAST). Based on which, the paper summarizes the characteristics of the sedimentary sequence evolution of Guantao formation in the study area. The study area was dominated by braided river deposits which mainly contained multi-period composite braided river sandbodies during the development of the low accommodation system tract of SQG2; during the development of the high accommodation system tract of SQG2, the study area was dominated by meandering river deposits which mainly contained isolated point-bar sandbodies and a high proportion of flood plain mud. The evolution characteristics of SQG1 sequence was similar to that of the lower Guantao formation. During the development of SQG1 sequence, the accommodation maintained a high level, so the grain size and sandstone percentage of the sandbodies in SQG1 were lower than those of Guantao formation. The 2 sets of meandering river deposits in Guantao formation of the southern gentle slope belt in Huanghekou sag can be the good cap rocks and provide good conditions for oil and gas accumulation. Guided by the study, oil and gas have been discovered successively in the study area
更新日期/Last Update: 2018-10-09