摘要
首次利用基准面旋回划分方法,结合地震界面接触关系、砂体垂向叠加样式,对涠西南凹陷流一段地层进行了层序的识别和划分,并对该层段岩性圈闭的成因模式进行了分析。涠西南凹陷流一段为一个完整的三级层序,以最大湖泛面T82为界可划分2个基准面半旋回,且存在2种岩性圈闭成因类型,其中上升期发育的盆底扇成因的储层分布广、勘探潜力大,而下降期发育与三角洲前缘有关的滑塌浊积岩砂体分布局限,预测难度大。这些研究结果可为该区寻找新的油气储量增长点提供依据。
In Weixinan sag, Beibuwan Basin, the sequences were firstly identified and divided for Member Liu, by using a method of baselevel cy cle division and in combination with the contact re lationships of seismic interfaces and the vertical stacking pattern of sandbodies, and the genetic models of lithologic traps in this Member were an alyzed as well. As a complete sequence of Order 3, Member Liu1 in Weixinan sag can be divided into two half cycles by the maximum flooding surface T82, and two genetic models of lithologic trap may occur. In the rising half cycle, the reservoirs from basin floor fans are widespread and great in explo ration potential; and in the falling half cycle, the sandbodies in slump turbidites associated with del ta front are limited in distribution and difficult to be predicted. These results may provide some evi dences for seeking new enhancement of hydrocar bon reserves in this area.
出处
《中国海上油气》
CAS
CSCD
北大核心
2013年第5期16-20,共5页
China Offshore Oil and Gas
基金
国家科技重大专项"南海西部涠西南凹陷隐蔽油气藏识别及勘探技术(编号:2008ZX05023-02-003)"部分研究成果
关键词
岩性圈闭
成因模式
基准面旋回
盆底扇
滑塌浊积岩
流一段涠西南凹陷
lithologic traps
genetic model
base-level cycle basin floor fan slump turbidites
Mem-ber Liu-1
Weixinan sag
作者简介
第一作者简介：方勇，男，工程师，2003年获中国地质大学（北京）博士学位，现从事海外油气战略与新项目研究。地址：北京市东城区东直门外小街6号海油大厦（邮编：100027）。E—mail：fangyongl@cnooc．com．cn。
