Title

Geological Threefold Division and Sedimentary Palaeogeography in Es3 Period in Dongpu Depression

作者

李明娟许化政周新科

Authors

LiM ingjuan, Xu
Huazheng, Zhou X inke

单位

(中石化石油勘探开发研究院, 北京100083)

Organization

Exploration & Production Re search
Institute, SINOPEC, Beij ing 100083, China

摘要

东濮凹陷构造与沉积明显分为2个阶段: 沙三段沉积时期和沙二段东营组沉

积时期。沙三段时期, 东濮地区发育濮阳湖和东明湖。濮阳湖受兰聊、五星集- 六塔断层活动

控制, 形成深水湖相-浅水盐湖相的暗色泥岩与盐岩、砂岩韵律, 是现今油气最丰富的领域, 盆

内二级断层——杜寨断层、石家集- 马寨断层、濮西断层的相继发育控制沉积中心的分布; 东

明湖是受兰聊断层活动控制的箕状凹陷, 因补偿速度快, 仅形成浅半深水的砂泥岩韵律, 生

油岩发育质量差, 现今的西洼南部地区是上述两湖泊的边缘, 基本无生油岩发育。沙二段— 东

营组时期, 长垣、黄河、文东、文西等断层强烈活动, 形成两洼一隆一斜坡的构造格局, 彻底改变

了沙三期的沉积古地理, 形成多个洼陷和多个沉积中心。

Abstract

Tec ton ics and sedim entary w ere div ided c lea rly two
per iods wh ich w ere Es3 and Es2 - Ed. In E s3 per iod. Puyang
lake and Dongm ing lake w ere g row ing in Dongpu a rea. The
Puyang lake w as contro lled by Lan lao fault activ ity and
W ux ing ji- Liu ta fau lt activ ity, and then dark m udstone and
rhythm o f salt rock and sandstone of deep lake facies and
sha llow sa lt- lake fac ies we re form ed. Dark mudstone and
rhythm o f sa lt ro ck and sandstone are the r ichest o il and gas
areas now. The d istribution of sed imentary centers w as
contro lled by secondary fau lts,
grow ing, such as Duzha i fau lt,
Shijiaji- M azha i fau lt and Pux i fau lt in Dongpu depression.
Dongm ing lake w as a half depress ion wh ich was contro lled by
Lanlao fault activ ity. The sha llow - ha lf deep wa ter,
rhy thm o f
mudstone and sandstone we re fo rmed because of fast
compensating veloc ity, and the grow ing qua lity o f o il source
- ro ck w as poo r. The re w as no o il source - rock in X iw a
sou th area wh ich w as located above two lakes,
boundary. In
Es2 - Ed pe riod, structura l pattern o f two sags- one upliftone
slope was formed because o f strong fault activ ity such as
Changhong fau lt, H uanghe fau lt, W endong fault, W enx i
fau lt, etc. Sed imentary palaeogeography w as changed
comp le tely. M any sags and m any sedim entary centers w ere
formed.

关键词：

东濮凹陷; 沙三段; 濮阳湖; 东明湖; 古地理;

Keywords:

Dongpu depression, 3rd number of
Shahejie Form ation ( Es3 ), Puyang lake, Dongm ing lake,
Pa laeogeography.;

基金项目

DOI

东濮凹陷地质三分性与沙三期沉积古地理